[v3] f2fs: fix to enable compress for newly created file if extension matches

  If compress_extension is set, and a newly created file matches the
extension, the file could be marked as compression file. However,
if inline_data is also enabled, there is no chance to check its
extension since f2fs_should_compress() always returns false.

This patch moves set_compress_inode(), which do extension check, in
f2fs_should_compress() to check extensions before setting inline
data flag.

Fixes: 7165841d578e ("f2fs: fix to check inline_data during compressed inode conversion")
Signed-off-by: Sheng Yong <shengyong@oppo.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
---
 fs/f2fs/f2fs.h  |   1 +
 fs/f2fs/namei.c | 336 ++++++++++++++++++++++++------------------------
 2 files changed, 171 insertions(+), 166 deletions(-)
---

Hi, Jaegeuk, Chao,

How about adding a bool `may_compress' in set_compress_new_inode, set
`my_compress` according to several conditions. If it is false, clear
F2FS_COMPR_FL.

And set_compress_context is also changed to clear F2FS_NOCOMP_FL,
otherwise, if F2FS_NOCOMP_FL is inherited from parent and hit
compress_extension, both F2FS_NOCOMP_FL and F2FS_COMPR_FL are set.
  

On 11/16, Sheng Yong wrote:
> If compress_extension is set, and a newly created file matches the
> extension, the file could be marked as compression file. However,
> if inline_data is also enabled, there is no chance to check its
> extension since f2fs_should_compress() always returns false.
> 
> This patch moves set_compress_inode(), which do extension check, in
> f2fs_should_compress() to check extensions before setting inline
> data flag.
> 
> Fixes: 7165841d578e ("f2fs: fix to check inline_data during compressed inode conversion")
> Signed-off-by: Sheng Yong <shengyong@oppo.com>
> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
> ---
>  fs/f2fs/f2fs.h  |   1 +
>  fs/f2fs/namei.c | 336 ++++++++++++++++++++++++------------------------
>  2 files changed, 171 insertions(+), 166 deletions(-)
> ---
> 
> Hi, Jaegeuk, Chao,
> 
> How about adding a bool `may_compress' in set_compress_new_inode, set
> `my_compress` according to several conditions. If it is false, clear
> F2FS_COMPR_FL.
> 
> And set_compress_context is also changed to clear F2FS_NOCOMP_FL,
> otherwise, if F2FS_NOCOMP_FL is inherited from parent and hit
> compress_extension, both F2FS_NOCOMP_FL and F2FS_COMPR_FL are set.
> 
> diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
> index 6a8cbf5bb1871..a3420fbb29214 100644
> --- a/fs/f2fs/f2fs.h
> +++ b/fs/f2fs/f2fs.h
> @@ -4355,6 +4355,7 @@ static inline int set_compress_context(struct inode *inode)
>  		F2FS_I(inode)->i_compress_flag |=
>  				F2FS_OPTION(sbi).compress_level <<
>  				COMPRESS_LEVEL_OFFSET;
> +	F2FS_I(inode)->i_flags &= ~F2FS_NOCOMP_FL;
>  	F2FS_I(inode)->i_flags |= F2FS_COMPR_FL;
>  	set_inode_flag(inode, FI_COMPRESSED_FILE);
>  	stat_inc_compr_inode(inode);
> diff --git a/fs/f2fs/namei.c b/fs/f2fs/namei.c
> index e104409c3a0e5..36ec5cf7cf859 100644
> --- a/fs/f2fs/namei.c
> +++ b/fs/f2fs/namei.c
> @@ -22,8 +22,170 @@
>  #include "acl.h"
>  #include <trace/events/f2fs.h>
>  
> +static inline int is_extension_exist(const unsigned char *s, const char *sub,
> +						bool tmp_ext)
> +{
> +	size_t slen = strlen(s);
> +	size_t sublen = strlen(sub);
> +	int i;
> +
> +	if (sublen == 1 && *sub == '*')
> +		return 1;
> +
> +	/*
> +	 * filename format of multimedia file should be defined as:
> +	 * "filename + '.' + extension + (optional: '.' + temp extension)".
> +	 */
> +	if (slen < sublen + 2)
> +		return 0;
> +
> +	if (!tmp_ext) {
> +		/* file has no temp extension */
> +		if (s[slen - sublen - 1] != '.')
> +			return 0;
> +		return !strncasecmp(s + slen - sublen, sub, sublen);
> +	}
> +
> +	for (i = 1; i < slen - sublen; i++) {
> +		if (s[i] != '.')
> +			continue;
> +		if (!strncasecmp(s + i + 1, sub, sublen))
> +			return 1;
> +	}
> +
> +	return 0;
> +}
> +
> +int f2fs_update_extension_list(struct f2fs_sb_info *sbi, const char *name,
> +							bool hot, bool set)
> +{
> +	__u8 (*extlist)[F2FS_EXTENSION_LEN] = sbi->raw_super->extension_list;
> +	int cold_count = le32_to_cpu(sbi->raw_super->extension_count);
> +	int hot_count = sbi->raw_super->hot_ext_count;
> +	int total_count = cold_count + hot_count;
> +	int start, count;
> +	int i;
> +
> +	if (set) {
> +		if (total_count == F2FS_MAX_EXTENSION)
> +			return -EINVAL;
> +	} else {
> +		if (!hot && !cold_count)
> +			return -EINVAL;
> +		if (hot && !hot_count)
> +			return -EINVAL;
> +	}
> +
> +	if (hot) {
> +		start = cold_count;
> +		count = total_count;
> +	} else {
> +		start = 0;
> +		count = cold_count;
> +	}
> +
> +	for (i = start; i < count; i++) {
> +		if (strcmp(name, extlist[i]))
> +			continue;
> +
> +		if (set)
> +			return -EINVAL;
> +
> +		memcpy(extlist[i], extlist[i + 1],
> +				F2FS_EXTENSION_LEN * (total_count - i - 1));
> +		memset(extlist[total_count - 1], 0, F2FS_EXTENSION_LEN);
> +		if (hot)
> +			sbi->raw_super->hot_ext_count = hot_count - 1;
> +		else
> +			sbi->raw_super->extension_count =
> +						cpu_to_le32(cold_count - 1);
> +		return 0;
> +	}
> +
> +	if (!set)
> +		return -EINVAL;
> +
> +	if (hot) {
> +		memcpy(extlist[count], name, strlen(name));
> +		sbi->raw_super->hot_ext_count = hot_count + 1;
> +	} else {
> +		char buf[F2FS_MAX_EXTENSION][F2FS_EXTENSION_LEN];
> +
> +		memcpy(buf, &extlist[cold_count],
> +				F2FS_EXTENSION_LEN * hot_count);
> +		memset(extlist[cold_count], 0, F2FS_EXTENSION_LEN);
> +		memcpy(extlist[cold_count], name, strlen(name));
> +		memcpy(&extlist[cold_count + 1], buf,
> +				F2FS_EXTENSION_LEN * hot_count);
> +		sbi->raw_super->extension_count = cpu_to_le32(cold_count + 1);
> +	}
> +	return 0;
> +}
> +
> +static void set_compress_new_inode(struct f2fs_sb_info *sbi, struct inode *dir,
> +				struct inode *inode, const unsigned char *name)
> +{
> +	struct f2fs_inode_info *fi = F2FS_I(inode);
> +	__u8 (*extlist)[F2FS_EXTENSION_LEN] = sbi->raw_super->extension_list;
> +	unsigned char (*noext)[F2FS_EXTENSION_LEN] =
> +						F2FS_OPTION(sbi).noextensions;
> +	unsigned char (*ext)[F2FS_EXTENSION_LEN] = F2FS_OPTION(sbi).extensions;
> +	unsigned char ext_cnt = F2FS_OPTION(sbi).compress_ext_cnt;
> +	unsigned char noext_cnt = F2FS_OPTION(sbi).nocompress_ext_cnt;
> +	bool may_compress = false;
> +	int i, cold_count, hot_count;
> +
> +	if (!f2fs_sb_has_compression(sbi) || !name)
> +		return;
> +	if (!S_ISREG(inode->i_mode) && !S_ISDIR(inode->i_mode))
> +		return;
> +
> +	/* Inherit the compression flag in directory */
> +	if (fi->i_flags & FS_COMPR_FL)
> +		may_compress = true;
> +
> +	/* Start to check extension list for regular file */
> +	if ((!ext_cnt && !noext_cnt) || S_ISDIR(inode->i_mode))

This doesn't address the Chao's point. It seems not much motivation to add
may_compress. Let me try to combine some with the previous patch.

> +		goto set_compress;
> +
> +	/* Don't compress hot files. */
> +	f2fs_down_read(&sbi->sb_lock);
> +	cold_count = le32_to_cpu(sbi->raw_super->extension_count);
> +	hot_count = sbi->raw_super->hot_ext_count;
> +	for (i = cold_count; i < cold_count + hot_count; i++)
> +		if (is_extension_exist(name, extlist[i], false)) {
> +			may_compress = false;
> +			f2fs_up_read(&sbi->sb_lock);
> +			goto set_compress;
> +		}
> +	f2fs_up_read(&sbi->sb_lock);
> +
> +	/* Don't compress unallowed extension. */
> +	for (i = 0; i < noext_cnt; i++) {
> +		if (is_extension_exist(name, noext[i], false)) {
> +			may_compress = false;
> +			goto set_compress;
> +		}
> +	}
> +
> +	/* Compress wanting extension. */
> +	for (i = 0; i < ext_cnt; i++) {
> +		if (is_extension_exist(name, ext[i], false)) {
> +			may_compress = true;
> +			goto set_compress;
> +		}
> +	}
> +
> +set_compress:
> +	if (may_compress)
> +		set_compress_context(inode);
> +	else if (fi->i_flags & F2FS_COMPR_FL)
> +		fi->i_flags &= ~F2FS_COMPR_FL;
> +}
> +
>  static struct inode *f2fs_new_inode(struct user_namespace *mnt_userns,
> -						struct inode *dir, umode_t mode)
> +						struct inode *dir, umode_t mode,
> +						const char *name)
>  {
>  	struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
>  	nid_t ino;
> @@ -114,12 +276,8 @@ static struct inode *f2fs_new_inode(struct user_namespace *mnt_userns,
>  	if (F2FS_I(inode)->i_flags & F2FS_PROJINHERIT_FL)
>  		set_inode_flag(inode, FI_PROJ_INHERIT);
>  
> -	if (f2fs_sb_has_compression(sbi)) {
> -		/* Inherit the compression flag in directory */
> -		if ((F2FS_I(dir)->i_flags & F2FS_COMPR_FL) &&
> -					f2fs_may_compress(inode))
> -			set_compress_context(inode);
> -	}
> +	/* Check compression first. */
> +	set_compress_new_inode(sbi, dir, inode, name);
>  
>  	/* Should enable inline_data after compression set */
>  	if (test_opt(sbi, INLINE_DATA) && f2fs_may_inline_data(inode))
> @@ -153,40 +311,6 @@ static struct inode *f2fs_new_inode(struct user_namespace *mnt_userns,
>  	return ERR_PTR(err);
>  }
>  
> -static inline int is_extension_exist(const unsigned char *s, const char *sub,
> -						bool tmp_ext)
> -{
> -	size_t slen = strlen(s);
> -	size_t sublen = strlen(sub);
> -	int i;
> -
> -	if (sublen == 1 && *sub == '*')
> -		return 1;
> -
> -	/*
> -	 * filename format of multimedia file should be defined as:
> -	 * "filename + '.' + extension + (optional: '.' + temp extension)".
> -	 */
> -	if (slen < sublen + 2)
> -		return 0;
> -
> -	if (!tmp_ext) {
> -		/* file has no temp extension */
> -		if (s[slen - sublen - 1] != '.')
> -			return 0;
> -		return !strncasecmp(s + slen - sublen, sub, sublen);
> -	}
> -
> -	for (i = 1; i < slen - sublen; i++) {
> -		if (s[i] != '.')
> -			continue;
> -		if (!strncasecmp(s + i + 1, sub, sublen))
> -			return 1;
> -	}
> -
> -	return 0;
> -}
> -
>  /*
>   * Set file's temperature for hot/cold data separation
>   */
> @@ -217,124 +341,6 @@ static inline void set_file_temperature(struct f2fs_sb_info *sbi, struct inode *
>  		file_set_hot(inode);
>  }
>  
> -int f2fs_update_extension_list(struct f2fs_sb_info *sbi, const char *name,
> -							bool hot, bool set)
> -{
> -	__u8 (*extlist)[F2FS_EXTENSION_LEN] = sbi->raw_super->extension_list;
> -	int cold_count = le32_to_cpu(sbi->raw_super->extension_count);
> -	int hot_count = sbi->raw_super->hot_ext_count;
> -	int total_count = cold_count + hot_count;
> -	int start, count;
> -	int i;
> -
> -	if (set) {
> -		if (total_count == F2FS_MAX_EXTENSION)
> -			return -EINVAL;
> -	} else {
> -		if (!hot && !cold_count)
> -			return -EINVAL;
> -		if (hot && !hot_count)
> -			return -EINVAL;
> -	}
> -
> -	if (hot) {
> -		start = cold_count;
> -		count = total_count;
> -	} else {
> -		start = 0;
> -		count = cold_count;
> -	}
> -
> -	for (i = start; i < count; i++) {
> -		if (strcmp(name, extlist[i]))
> -			continue;
> -
> -		if (set)
> -			return -EINVAL;
> -
> -		memcpy(extlist[i], extlist[i + 1],
> -				F2FS_EXTENSION_LEN * (total_count - i - 1));
> -		memset(extlist[total_count - 1], 0, F2FS_EXTENSION_LEN);
> -		if (hot)
> -			sbi->raw_super->hot_ext_count = hot_count - 1;
> -		else
> -			sbi->raw_super->extension_count =
> -						cpu_to_le32(cold_count - 1);
> -		return 0;
> -	}
> -
> -	if (!set)
> -		return -EINVAL;
> -
> -	if (hot) {
> -		memcpy(extlist[count], name, strlen(name));
> -		sbi->raw_super->hot_ext_count = hot_count + 1;
> -	} else {
> -		char buf[F2FS_MAX_EXTENSION][F2FS_EXTENSION_LEN];
> -
> -		memcpy(buf, &extlist[cold_count],
> -				F2FS_EXTENSION_LEN * hot_count);
> -		memset(extlist[cold_count], 0, F2FS_EXTENSION_LEN);
> -		memcpy(extlist[cold_count], name, strlen(name));
> -		memcpy(&extlist[cold_count + 1], buf,
> -				F2FS_EXTENSION_LEN * hot_count);
> -		sbi->raw_super->extension_count = cpu_to_le32(cold_count + 1);
> -	}
> -	return 0;
> -}
> -
> -static void set_compress_inode(struct f2fs_sb_info *sbi, struct inode *inode,
> -						const unsigned char *name)
> -{
> -	__u8 (*extlist)[F2FS_EXTENSION_LEN] = sbi->raw_super->extension_list;
> -	unsigned char (*noext)[F2FS_EXTENSION_LEN] = F2FS_OPTION(sbi).noextensions;
> -	unsigned char (*ext)[F2FS_EXTENSION_LEN] = F2FS_OPTION(sbi).extensions;
> -	unsigned char ext_cnt = F2FS_OPTION(sbi).compress_ext_cnt;
> -	unsigned char noext_cnt = F2FS_OPTION(sbi).nocompress_ext_cnt;
> -	int i, cold_count, hot_count;
> -
> -	if (!f2fs_sb_has_compression(sbi) ||
> -			F2FS_I(inode)->i_flags & F2FS_NOCOMP_FL ||
> -			!f2fs_may_compress(inode) ||
> -			(!ext_cnt && !noext_cnt))
> -		return;
> -
> -	f2fs_down_read(&sbi->sb_lock);
> -
> -	cold_count = le32_to_cpu(sbi->raw_super->extension_count);
> -	hot_count = sbi->raw_super->hot_ext_count;
> -
> -	for (i = cold_count; i < cold_count + hot_count; i++) {
> -		if (is_extension_exist(name, extlist[i], false)) {
> -			f2fs_up_read(&sbi->sb_lock);
> -			return;
> -		}
> -	}
> -
> -	f2fs_up_read(&sbi->sb_lock);
> -
> -	for (i = 0; i < noext_cnt; i++) {
> -		if (is_extension_exist(name, noext[i], false)) {
> -			f2fs_disable_compressed_file(inode);
> -			return;
> -		}
> -	}
> -
> -	if (is_inode_flag_set(inode, FI_COMPRESSED_FILE))
> -		return;
> -
> -	for (i = 0; i < ext_cnt; i++) {
> -		if (!is_extension_exist(name, ext[i], false))
> -			continue;
> -
> -		/* Do not use inline_data with compression */
> -		stat_dec_inline_inode(inode);
> -		clear_inode_flag(inode, FI_INLINE_DATA);
> -		set_compress_context(inode);
> -		return;
> -	}
> -}
> -
>  static int f2fs_create(struct user_namespace *mnt_userns, struct inode *dir,
>  		       struct dentry *dentry, umode_t mode, bool excl)
>  {
> @@ -352,15 +358,13 @@ static int f2fs_create(struct user_namespace *mnt_userns, struct inode *dir,
>  	if (err)
>  		return err;
>  
> -	inode = f2fs_new_inode(mnt_userns, dir, mode);
> +	inode = f2fs_new_inode(mnt_userns, dir, mode, dentry->d_name.name);
>  	if (IS_ERR(inode))
>  		return PTR_ERR(inode);
>  
>  	if (!test_opt(sbi, DISABLE_EXT_IDENTIFY))
>  		set_file_temperature(sbi, inode, dentry->d_name.name);
>  
> -	set_compress_inode(sbi, inode, dentry->d_name.name);
> -
>  	inode->i_op = &f2fs_file_inode_operations;
>  	inode->i_fop = &f2fs_file_operations;
>  	inode->i_mapping->a_ops = &f2fs_dblock_aops;
> @@ -689,7 +693,7 @@ static int f2fs_symlink(struct user_namespace *mnt_userns, struct inode *dir,
>  	if (err)
>  		return err;
>  
> -	inode = f2fs_new_inode(mnt_userns, dir, S_IFLNK | S_IRWXUGO);
> +	inode = f2fs_new_inode(mnt_userns, dir, S_IFLNK | S_IRWXUGO, NULL);
>  	if (IS_ERR(inode))
>  		return PTR_ERR(inode);
>  
> @@ -760,7 +764,7 @@ static int f2fs_mkdir(struct user_namespace *mnt_userns, struct inode *dir,
>  	if (err)
>  		return err;
>  
> -	inode = f2fs_new_inode(mnt_userns, dir, S_IFDIR | mode);
> +	inode = f2fs_new_inode(mnt_userns, dir, S_IFDIR | mode, dentry->d_name.name);
>  	if (IS_ERR(inode))
>  		return PTR_ERR(inode);
>  
> @@ -817,7 +821,7 @@ static int f2fs_mknod(struct user_namespace *mnt_userns, struct inode *dir,
>  	if (err)
>  		return err;
>  
> -	inode = f2fs_new_inode(mnt_userns, dir, mode);
> +	inode = f2fs_new_inode(mnt_userns, dir, mode, NULL);
>  	if (IS_ERR(inode))
>  		return PTR_ERR(inode);
>  
> @@ -856,7 +860,7 @@ static int __f2fs_tmpfile(struct user_namespace *mnt_userns, struct inode *dir,
>  	if (err)
>  		return err;
>  
> -	inode = f2fs_new_inode(mnt_userns, dir, mode);
> +	inode = f2fs_new_inode(mnt_userns, dir, mode, NULL);
>  	if (IS_ERR(inode))
>  		return PTR_ERR(inode);
>  
> -- 
> 2.25.1
  

On 11/16, Sheng Yong wrote:
> If compress_extension is set, and a newly created file matches the
> extension, the file could be marked as compression file. However,
> if inline_data is also enabled, there is no chance to check its
> extension since f2fs_should_compress() always returns false.
> 
> This patch moves set_compress_inode(), which do extension check, in
> f2fs_should_compress() to check extensions before setting inline
> data flag.
> 
> Fixes: 7165841d578e ("f2fs: fix to check inline_data during compressed inode conversion")
> Signed-off-by: Sheng Yong <shengyong@oppo.com>
> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
> ---
>  fs/f2fs/f2fs.h  |   1 +
>  fs/f2fs/namei.c | 336 ++++++++++++++++++++++++------------------------
>  2 files changed, 171 insertions(+), 166 deletions(-)
> ---
> 
> Hi, Jaegeuk, Chao,
> 
> How about adding a bool `may_compress' in set_compress_new_inode, set
> `my_compress` according to several conditions. If it is false, clear
> F2FS_COMPR_FL.
> 
> And set_compress_context is also changed to clear F2FS_NOCOMP_FL,
> otherwise, if F2FS_NOCOMP_FL is inherited from parent and hit
> compress_extension, both F2FS_NOCOMP_FL and F2FS_COMPR_FL are set.



> 
> diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
> index 6a8cbf5bb1871..a3420fbb29214 100644
> --- a/fs/f2fs/f2fs.h
> +++ b/fs/f2fs/f2fs.h
> @@ -4355,6 +4355,7 @@ static inline int set_compress_context(struct inode *inode)
>  		F2FS_I(inode)->i_compress_flag |=
>  				F2FS_OPTION(sbi).compress_level <<
>  				COMPRESS_LEVEL_OFFSET;
> +	F2FS_I(inode)->i_flags &= ~F2FS_NOCOMP_FL;
>  	F2FS_I(inode)->i_flags |= F2FS_COMPR_FL;
>  	set_inode_flag(inode, FI_COMPRESSED_FILE);
>  	stat_inc_compr_inode(inode);
> diff --git a/fs/f2fs/namei.c b/fs/f2fs/namei.c
> index e104409c3a0e5..36ec5cf7cf859 100644
> --- a/fs/f2fs/namei.c
> +++ b/fs/f2fs/namei.c
> @@ -22,8 +22,170 @@
>  #include "acl.h"
>  #include <trace/events/f2fs.h>
>  
> +static inline int is_extension_exist(const unsigned char *s, const char *sub,
> +						bool tmp_ext)
> +{
> +	size_t slen = strlen(s);
> +	size_t sublen = strlen(sub);
> +	int i;
> +
> +	if (sublen == 1 && *sub == '*')
> +		return 1;
> +
> +	/*
> +	 * filename format of multimedia file should be defined as:
> +	 * "filename + '.' + extension + (optional: '.' + temp extension)".
> +	 */
> +	if (slen < sublen + 2)
> +		return 0;
> +
> +	if (!tmp_ext) {
> +		/* file has no temp extension */
> +		if (s[slen - sublen - 1] != '.')
> +			return 0;
> +		return !strncasecmp(s + slen - sublen, sub, sublen);
> +	}
> +
> +	for (i = 1; i < slen - sublen; i++) {
> +		if (s[i] != '.')
> +			continue;
> +		if (!strncasecmp(s + i + 1, sub, sublen))
> +			return 1;
> +	}
> +
> +	return 0;
> +}
> +
> +int f2fs_update_extension_list(struct f2fs_sb_info *sbi, const char *name,
> +							bool hot, bool set)
> +{
> +	__u8 (*extlist)[F2FS_EXTENSION_LEN] = sbi->raw_super->extension_list;
> +	int cold_count = le32_to_cpu(sbi->raw_super->extension_count);
> +	int hot_count = sbi->raw_super->hot_ext_count;
> +	int total_count = cold_count + hot_count;
> +	int start, count;
> +	int i;
> +
> +	if (set) {
> +		if (total_count == F2FS_MAX_EXTENSION)
> +			return -EINVAL;
> +	} else {
> +		if (!hot && !cold_count)
> +			return -EINVAL;
> +		if (hot && !hot_count)
> +			return -EINVAL;
> +	}
> +
> +	if (hot) {
> +		start = cold_count;
> +		count = total_count;
> +	} else {
> +		start = 0;
> +		count = cold_count;
> +	}
> +
> +	for (i = start; i < count; i++) {
> +		if (strcmp(name, extlist[i]))
> +			continue;
> +
> +		if (set)
> +			return -EINVAL;
> +
> +		memcpy(extlist[i], extlist[i + 1],
> +				F2FS_EXTENSION_LEN * (total_count - i - 1));
> +		memset(extlist[total_count - 1], 0, F2FS_EXTENSION_LEN);
> +		if (hot)
> +			sbi->raw_super->hot_ext_count = hot_count - 1;
> +		else
> +			sbi->raw_super->extension_count =
> +						cpu_to_le32(cold_count - 1);
> +		return 0;
> +	}
> +
> +	if (!set)
> +		return -EINVAL;
> +
> +	if (hot) {
> +		memcpy(extlist[count], name, strlen(name));
> +		sbi->raw_super->hot_ext_count = hot_count + 1;
> +	} else {
> +		char buf[F2FS_MAX_EXTENSION][F2FS_EXTENSION_LEN];
> +
> +		memcpy(buf, &extlist[cold_count],
> +				F2FS_EXTENSION_LEN * hot_count);
> +		memset(extlist[cold_count], 0, F2FS_EXTENSION_LEN);
> +		memcpy(extlist[cold_count], name, strlen(name));
> +		memcpy(&extlist[cold_count + 1], buf,
> +				F2FS_EXTENSION_LEN * hot_count);
> +		sbi->raw_super->extension_count = cpu_to_le32(cold_count + 1);
> +	}
> +	return 0;
> +}
> +
> +static void set_compress_new_inode(struct f2fs_sb_info *sbi, struct inode *dir,
> +				struct inode *inode, const unsigned char *name)
> +{
> +	struct f2fs_inode_info *fi = F2FS_I(inode);
> +	__u8 (*extlist)[F2FS_EXTENSION_LEN] = sbi->raw_super->extension_list;
> +	unsigned char (*noext)[F2FS_EXTENSION_LEN] =
> +						F2FS_OPTION(sbi).noextensions;
> +	unsigned char (*ext)[F2FS_EXTENSION_LEN] = F2FS_OPTION(sbi).extensions;
> +	unsigned char ext_cnt = F2FS_OPTION(sbi).compress_ext_cnt;
> +	unsigned char noext_cnt = F2FS_OPTION(sbi).nocompress_ext_cnt;
> +	bool may_compress = false;
> +	int i, cold_count, hot_count;
> +
> +	if (!f2fs_sb_has_compression(sbi) || !name)
> +		return;
> +	if (!S_ISREG(inode->i_mode) && !S_ISDIR(inode->i_mode))
> +		return;
> +
> +	/* Inherit the compression flag in directory */
> +	if (fi->i_flags & FS_COMPR_FL)
> +		may_compress = true;
> +
> +	/* Start to check extension list for regular file */
> +	if ((!ext_cnt && !noext_cnt) || S_ISDIR(inode->i_mode))
> +		goto set_compress;
> +
> +	/* Don't compress hot files. */
> +	f2fs_down_read(&sbi->sb_lock);
> +	cold_count = le32_to_cpu(sbi->raw_super->extension_count);
> +	hot_count = sbi->raw_super->hot_ext_count;
> +	for (i = cold_count; i < cold_count + hot_count; i++)
> +		if (is_extension_exist(name, extlist[i], false)) {
> +			may_compress = false;
> +			f2fs_up_read(&sbi->sb_lock);
> +			goto set_compress;
> +		}
> +	f2fs_up_read(&sbi->sb_lock);
> +
> +	/* Don't compress unallowed extension. */
> +	for (i = 0; i < noext_cnt; i++) {
> +		if (is_extension_exist(name, noext[i], false)) {
> +			may_compress = false;
> +			goto set_compress;
> +		}
> +	}
> +
> +	/* Compress wanting extension. */
> +	for (i = 0; i < ext_cnt; i++) {
> +		if (is_extension_exist(name, ext[i], false)) {
> +			may_compress = true;
> +			goto set_compress;
> +		}
> +	}
> +
> +set_compress:
> +	if (may_compress)
> +		set_compress_context(inode);
> +	else if (fi->i_flags & F2FS_COMPR_FL)
> +		fi->i_flags &= ~F2FS_COMPR_FL;

Let's inherit F2FS_COMPR_FL and F2FS_NOCOMP_FL here instead of getting it
before.

> +}
> +
>  static struct inode *f2fs_new_inode(struct user_namespace *mnt_userns,
> -						struct inode *dir, umode_t mode)
> +						struct inode *dir, umode_t mode,
> +						const char *name)
>  {
>  	struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
>  	nid_t ino;
> @@ -114,12 +276,8 @@ static struct inode *f2fs_new_inode(struct user_namespace *mnt_userns,
>  	if (F2FS_I(inode)->i_flags & F2FS_PROJINHERIT_FL)
>  		set_inode_flag(inode, FI_PROJ_INHERIT);
>  
> -	if (f2fs_sb_has_compression(sbi)) {
> -		/* Inherit the compression flag in directory */
> -		if ((F2FS_I(dir)->i_flags & F2FS_COMPR_FL) &&
> -					f2fs_may_compress(inode))
> -			set_compress_context(inode);
> -	}
> +	/* Check compression first. */
> +	set_compress_new_inode(sbi, dir, inode, name);
>  
>  	/* Should enable inline_data after compression set */
>  	if (test_opt(sbi, INLINE_DATA) && f2fs_may_inline_data(inode))
> @@ -153,40 +311,6 @@ static struct inode *f2fs_new_inode(struct user_namespace *mnt_userns,
>  	return ERR_PTR(err);
>  }
>  
> -static inline int is_extension_exist(const unsigned char *s, const char *sub,
> -						bool tmp_ext)
> -{
> -	size_t slen = strlen(s);
> -	size_t sublen = strlen(sub);
> -	int i;
> -
> -	if (sublen == 1 && *sub == '*')
> -		return 1;
> -
> -	/*
> -	 * filename format of multimedia file should be defined as:
> -	 * "filename + '.' + extension + (optional: '.' + temp extension)".
> -	 */
> -	if (slen < sublen + 2)
> -		return 0;
> -
> -	if (!tmp_ext) {
> -		/* file has no temp extension */
> -		if (s[slen - sublen - 1] != '.')
> -			return 0;
> -		return !strncasecmp(s + slen - sublen, sub, sublen);
> -	}
> -
> -	for (i = 1; i < slen - sublen; i++) {
> -		if (s[i] != '.')
> -			continue;
> -		if (!strncasecmp(s + i + 1, sub, sublen))
> -			return 1;
> -	}
> -
> -	return 0;
> -}
> -
>  /*
>   * Set file's temperature for hot/cold data separation
>   */
> @@ -217,124 +341,6 @@ static inline void set_file_temperature(struct f2fs_sb_info *sbi, struct inode *
>  		file_set_hot(inode);
>  }
>  
> -int f2fs_update_extension_list(struct f2fs_sb_info *sbi, const char *name,
> -							bool hot, bool set)
> -{
> -	__u8 (*extlist)[F2FS_EXTENSION_LEN] = sbi->raw_super->extension_list;
> -	int cold_count = le32_to_cpu(sbi->raw_super->extension_count);
> -	int hot_count = sbi->raw_super->hot_ext_count;
> -	int total_count = cold_count + hot_count;
> -	int start, count;
> -	int i;
> -
> -	if (set) {
> -		if (total_count == F2FS_MAX_EXTENSION)
> -			return -EINVAL;
> -	} else {
> -		if (!hot && !cold_count)
> -			return -EINVAL;
> -		if (hot && !hot_count)
> -			return -EINVAL;
> -	}
> -
> -	if (hot) {
> -		start = cold_count;
> -		count = total_count;
> -	} else {
> -		start = 0;
> -		count = cold_count;
> -	}
> -
> -	for (i = start; i < count; i++) {
> -		if (strcmp(name, extlist[i]))
> -			continue;
> -
> -		if (set)
> -			return -EINVAL;
> -
> -		memcpy(extlist[i], extlist[i + 1],
> -				F2FS_EXTENSION_LEN * (total_count - i - 1));
> -		memset(extlist[total_count - 1], 0, F2FS_EXTENSION_LEN);
> -		if (hot)
> -			sbi->raw_super->hot_ext_count = hot_count - 1;
> -		else
> -			sbi->raw_super->extension_count =
> -						cpu_to_le32(cold_count - 1);
> -		return 0;
> -	}
> -
> -	if (!set)
> -		return -EINVAL;
> -
> -	if (hot) {
> -		memcpy(extlist[count], name, strlen(name));
> -		sbi->raw_super->hot_ext_count = hot_count + 1;
> -	} else {
> -		char buf[F2FS_MAX_EXTENSION][F2FS_EXTENSION_LEN];
> -
> -		memcpy(buf, &extlist[cold_count],
> -				F2FS_EXTENSION_LEN * hot_count);
> -		memset(extlist[cold_count], 0, F2FS_EXTENSION_LEN);
> -		memcpy(extlist[cold_count], name, strlen(name));
> -		memcpy(&extlist[cold_count + 1], buf,
> -				F2FS_EXTENSION_LEN * hot_count);
> -		sbi->raw_super->extension_count = cpu_to_le32(cold_count + 1);
> -	}
> -	return 0;
> -}
> -
> -static void set_compress_inode(struct f2fs_sb_info *sbi, struct inode *inode,
> -						const unsigned char *name)
> -{
> -	__u8 (*extlist)[F2FS_EXTENSION_LEN] = sbi->raw_super->extension_list;
> -	unsigned char (*noext)[F2FS_EXTENSION_LEN] = F2FS_OPTION(sbi).noextensions;
> -	unsigned char (*ext)[F2FS_EXTENSION_LEN] = F2FS_OPTION(sbi).extensions;
> -	unsigned char ext_cnt = F2FS_OPTION(sbi).compress_ext_cnt;
> -	unsigned char noext_cnt = F2FS_OPTION(sbi).nocompress_ext_cnt;
> -	int i, cold_count, hot_count;
> -
> -	if (!f2fs_sb_has_compression(sbi) ||
> -			F2FS_I(inode)->i_flags & F2FS_NOCOMP_FL ||
> -			!f2fs_may_compress(inode) ||
> -			(!ext_cnt && !noext_cnt))
> -		return;
> -
> -	f2fs_down_read(&sbi->sb_lock);
> -
> -	cold_count = le32_to_cpu(sbi->raw_super->extension_count);
> -	hot_count = sbi->raw_super->hot_ext_count;
> -
> -	for (i = cold_count; i < cold_count + hot_count; i++) {
> -		if (is_extension_exist(name, extlist[i], false)) {
> -			f2fs_up_read(&sbi->sb_lock);
> -			return;
> -		}
> -	}
> -
> -	f2fs_up_read(&sbi->sb_lock);
> -
> -	for (i = 0; i < noext_cnt; i++) {
> -		if (is_extension_exist(name, noext[i], false)) {
> -			f2fs_disable_compressed_file(inode);
> -			return;
> -		}
> -	}
> -
> -	if (is_inode_flag_set(inode, FI_COMPRESSED_FILE))
> -		return;
> -
> -	for (i = 0; i < ext_cnt; i++) {
> -		if (!is_extension_exist(name, ext[i], false))
> -			continue;
> -
> -		/* Do not use inline_data with compression */
> -		stat_dec_inline_inode(inode);
> -		clear_inode_flag(inode, FI_INLINE_DATA);
> -		set_compress_context(inode);
> -		return;
> -	}
> -}
> -
>  static int f2fs_create(struct user_namespace *mnt_userns, struct inode *dir,
>  		       struct dentry *dentry, umode_t mode, bool excl)
>  {
> @@ -352,15 +358,13 @@ static int f2fs_create(struct user_namespace *mnt_userns, struct inode *dir,
>  	if (err)
>  		return err;
>  
> -	inode = f2fs_new_inode(mnt_userns, dir, mode);
> +	inode = f2fs_new_inode(mnt_userns, dir, mode, dentry->d_name.name);
>  	if (IS_ERR(inode))
>  		return PTR_ERR(inode);
>  
>  	if (!test_opt(sbi, DISABLE_EXT_IDENTIFY))
>  		set_file_temperature(sbi, inode, dentry->d_name.name);
>  
> -	set_compress_inode(sbi, inode, dentry->d_name.name);
> -
>  	inode->i_op = &f2fs_file_inode_operations;
>  	inode->i_fop = &f2fs_file_operations;
>  	inode->i_mapping->a_ops = &f2fs_dblock_aops;
> @@ -689,7 +693,7 @@ static int f2fs_symlink(struct user_namespace *mnt_userns, struct inode *dir,
>  	if (err)
>  		return err;
>  
> -	inode = f2fs_new_inode(mnt_userns, dir, S_IFLNK | S_IRWXUGO);
> +	inode = f2fs_new_inode(mnt_userns, dir, S_IFLNK | S_IRWXUGO, NULL);
>  	if (IS_ERR(inode))
>  		return PTR_ERR(inode);
>  
> @@ -760,7 +764,7 @@ static int f2fs_mkdir(struct user_namespace *mnt_userns, struct inode *dir,
>  	if (err)
>  		return err;
>  
> -	inode = f2fs_new_inode(mnt_userns, dir, S_IFDIR | mode);
> +	inode = f2fs_new_inode(mnt_userns, dir, S_IFDIR | mode, dentry->d_name.name);
>  	if (IS_ERR(inode))
>  		return PTR_ERR(inode);
>  
> @@ -817,7 +821,7 @@ static int f2fs_mknod(struct user_namespace *mnt_userns, struct inode *dir,
>  	if (err)
>  		return err;
>  
> -	inode = f2fs_new_inode(mnt_userns, dir, mode);
> +	inode = f2fs_new_inode(mnt_userns, dir, mode, NULL);
>  	if (IS_ERR(inode))
>  		return PTR_ERR(inode);
>  
> @@ -856,7 +860,7 @@ static int __f2fs_tmpfile(struct user_namespace *mnt_userns, struct inode *dir,
>  	if (err)
>  		return err;
>  
> -	inode = f2fs_new_inode(mnt_userns, dir, mode);
> +	inode = f2fs_new_inode(mnt_userns, dir, mode, NULL);
>  	if (IS_ERR(inode))
>  		return PTR_ERR(inode);
>  
> -- 
> 2.25.1
  

If compress_extension is set, and a newly created file matches the
extension, the file could be marked as compression file. However,
if inline_data is also enabled, there is no chance to check its
extension since f2fs_should_compress() always returns false.

This patch moves set_compress_inode(), which do extension check, in
f2fs_should_compress() to check extensions before setting inline
data flag.

Fixes: 7165841d578e ("f2fs: fix to check inline_data during compressed inode conversion")
Signed-off-by: Sheng Yong <shengyong@oppo.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
---

 Checking this version.

 fs/f2fs/f2fs.h  |   2 +-
 fs/f2fs/namei.c | 328 ++++++++++++++++++++++++------------------------
 2 files changed, 163 insertions(+), 167 deletions(-)

diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
index b89b5d755ce0..dedac413bf64 100644
--- a/fs/f2fs/f2fs.h
+++ b/fs/f2fs/f2fs.h
@@ -2980,7 +2980,7 @@ static inline void f2fs_change_bit(unsigned int nr, char *addr)
 /* Flags that should be inherited by new inodes from their parent. */
 #define F2FS_FL_INHERITED (F2FS_SYNC_FL | F2FS_NODUMP_FL | F2FS_NOATIME_FL | \
 			   F2FS_DIRSYNC_FL | F2FS_PROJINHERIT_FL | \
-			   F2FS_CASEFOLD_FL | F2FS_COMPR_FL | F2FS_NOCOMP_FL)
+			   F2FS_CASEFOLD_FL)
 
 /* Flags that are appropriate for regular files (all but dir-specific ones). */
 #define F2FS_REG_FLMASK		(~(F2FS_DIRSYNC_FL | F2FS_PROJINHERIT_FL | \
diff --git a/fs/f2fs/namei.c b/fs/f2fs/namei.c
index e104409c3a0e..cb7441a19d22 100644
--- a/fs/f2fs/namei.c
+++ b/fs/f2fs/namei.c
@@ -22,8 +22,161 @@
 #include "acl.h"
 #include <trace/events/f2fs.h>
 
+static inline int is_extension_exist(const unsigned char *s, const char *sub,
+						bool tmp_ext)
+{
+	size_t slen = strlen(s);
+	size_t sublen = strlen(sub);
+	int i;
+
+	if (sublen == 1 && *sub == '*')
+		return 1;
+
+	/*
+	 * filename format of multimedia file should be defined as:
+	 * "filename + '.' + extension + (optional: '.' + temp extension)".
+	 */
+	if (slen < sublen + 2)
+		return 0;
+
+	if (!tmp_ext) {
+		/* file has no temp extension */
+		if (s[slen - sublen - 1] != '.')
+			return 0;
+		return !strncasecmp(s + slen - sublen, sub, sublen);
+	}
+
+	for (i = 1; i < slen - sublen; i++) {
+		if (s[i] != '.')
+			continue;
+		if (!strncasecmp(s + i + 1, sub, sublen))
+			return 1;
+	}
+
+	return 0;
+}
+
+int f2fs_update_extension_list(struct f2fs_sb_info *sbi, const char *name,
+							bool hot, bool set)
+{
+	__u8 (*extlist)[F2FS_EXTENSION_LEN] = sbi->raw_super->extension_list;
+	int cold_count = le32_to_cpu(sbi->raw_super->extension_count);
+	int hot_count = sbi->raw_super->hot_ext_count;
+	int total_count = cold_count + hot_count;
+	int start, count;
+	int i;
+
+	if (set) {
+		if (total_count == F2FS_MAX_EXTENSION)
+			return -EINVAL;
+	} else {
+		if (!hot && !cold_count)
+			return -EINVAL;
+		if (hot && !hot_count)
+			return -EINVAL;
+	}
+
+	if (hot) {
+		start = cold_count;
+		count = total_count;
+	} else {
+		start = 0;
+		count = cold_count;
+	}
+
+	for (i = start; i < count; i++) {
+		if (strcmp(name, extlist[i]))
+			continue;
+
+		if (set)
+			return -EINVAL;
+
+		memcpy(extlist[i], extlist[i + 1],
+				F2FS_EXTENSION_LEN * (total_count - i - 1));
+		memset(extlist[total_count - 1], 0, F2FS_EXTENSION_LEN);
+		if (hot)
+			sbi->raw_super->hot_ext_count = hot_count - 1;
+		else
+			sbi->raw_super->extension_count =
+						cpu_to_le32(cold_count - 1);
+		return 0;
+	}
+
+	if (!set)
+		return -EINVAL;
+
+	if (hot) {
+		memcpy(extlist[count], name, strlen(name));
+		sbi->raw_super->hot_ext_count = hot_count + 1;
+	} else {
+		char buf[F2FS_MAX_EXTENSION][F2FS_EXTENSION_LEN];
+
+		memcpy(buf, &extlist[cold_count],
+				F2FS_EXTENSION_LEN * hot_count);
+		memset(extlist[cold_count], 0, F2FS_EXTENSION_LEN);
+		memcpy(extlist[cold_count], name, strlen(name));
+		memcpy(&extlist[cold_count + 1], buf,
+				F2FS_EXTENSION_LEN * hot_count);
+		sbi->raw_super->extension_count = cpu_to_le32(cold_count + 1);
+	}
+	return 0;
+}
+
+static void set_compress_new_inode(struct f2fs_sb_info *sbi, struct inode *dir,
+				struct inode *inode, const unsigned char *name)
+{
+	__u8 (*extlist)[F2FS_EXTENSION_LEN] = sbi->raw_super->extension_list;
+	unsigned char (*noext)[F2FS_EXTENSION_LEN] =
+						F2FS_OPTION(sbi).noextensions;
+	unsigned char (*ext)[F2FS_EXTENSION_LEN] = F2FS_OPTION(sbi).extensions;
+	unsigned char ext_cnt = F2FS_OPTION(sbi).compress_ext_cnt;
+	unsigned char noext_cnt = F2FS_OPTION(sbi).nocompress_ext_cnt;
+	int i, cold_count, hot_count;
+
+	/* Caller should give the name of regular file or directory. */
+	if (!f2fs_sb_has_compression(sbi) || !name)
+		return;
+
+	if (S_ISDIR(inode->i_mode))
+		goto inherit_comp;
+
+	/* Don't compress hot files. */
+	f2fs_down_read(&sbi->sb_lock);
+	cold_count = le32_to_cpu(sbi->raw_super->extension_count);
+	hot_count = sbi->raw_super->hot_ext_count;
+	for (i = cold_count; i < cold_count + hot_count; i++)
+		if (is_extension_exist(name, extlist[i], false))
+			break;
+	f2fs_up_read(&sbi->sb_lock);
+	if (i < (cold_count + hot_count))
+		return;
+
+	/* Don't compress unallowed extension. */
+	for (i = 0; i < noext_cnt; i++)
+		if (is_extension_exist(name, noext[i], false))
+			return;
+inherit_comp:
+	/* Inherit the {no-}compression flag in directory */
+	if (F2FS_I(dir)->i_flags & F2FS_NOCOMP_FL) {
+		F2FS_I(inode)->i_flags |= F2FS_NOCOMP_FL;
+		return;
+	} else if (F2FS_I(dir)->i_flags & F2FS_COMPR_FL) {
+		set_compress_context(inode);
+		return;
+	}
+
+	/* Compress wanting extension. */
+	for (i = 0; i < ext_cnt; i++) {
+		if (is_extension_exist(name, ext[i], false)) {
+			set_compress_context(inode);
+			return;
+		}
+	}
+}
+
 static struct inode *f2fs_new_inode(struct user_namespace *mnt_userns,
-						struct inode *dir, umode_t mode)
+						struct inode *dir, umode_t mode,
+						const char *name)
 {
 	struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
 	nid_t ino;
@@ -114,12 +267,8 @@ static struct inode *f2fs_new_inode(struct user_namespace *mnt_userns,
 	if (F2FS_I(inode)->i_flags & F2FS_PROJINHERIT_FL)
 		set_inode_flag(inode, FI_PROJ_INHERIT);
 
-	if (f2fs_sb_has_compression(sbi)) {
-		/* Inherit the compression flag in directory */
-		if ((F2FS_I(dir)->i_flags & F2FS_COMPR_FL) &&
-					f2fs_may_compress(inode))
-			set_compress_context(inode);
-	}
+	/* Check compression first. */
+	set_compress_new_inode(sbi, dir, inode, name);
 
 	/* Should enable inline_data after compression set */
 	if (test_opt(sbi, INLINE_DATA) && f2fs_may_inline_data(inode))
@@ -153,40 +302,6 @@ static struct inode *f2fs_new_inode(struct user_namespace *mnt_userns,
 	return ERR_PTR(err);
 }
 
-static inline int is_extension_exist(const unsigned char *s, const char *sub,
-						bool tmp_ext)
-{
-	size_t slen = strlen(s);
-	size_t sublen = strlen(sub);
-	int i;
-
-	if (sublen == 1 && *sub == '*')
-		return 1;
-
-	/*
-	 * filename format of multimedia file should be defined as:
-	 * "filename + '.' + extension + (optional: '.' + temp extension)".
-	 */
-	if (slen < sublen + 2)
-		return 0;
-
-	if (!tmp_ext) {
-		/* file has no temp extension */
-		if (s[slen - sublen - 1] != '.')
-			return 0;
-		return !strncasecmp(s + slen - sublen, sub, sublen);
-	}
-
-	for (i = 1; i < slen - sublen; i++) {
-		if (s[i] != '.')
-			continue;
-		if (!strncasecmp(s + i + 1, sub, sublen))
-			return 1;
-	}
-
-	return 0;
-}
-
 /*
  * Set file's temperature for hot/cold data separation
  */
@@ -217,124 +332,6 @@ static inline void set_file_temperature(struct f2fs_sb_info *sbi, struct inode *
 		file_set_hot(inode);
 }
 
-int f2fs_update_extension_list(struct f2fs_sb_info *sbi, const char *name,
-							bool hot, bool set)
-{
-	__u8 (*extlist)[F2FS_EXTENSION_LEN] = sbi->raw_super->extension_list;
-	int cold_count = le32_to_cpu(sbi->raw_super->extension_count);
-	int hot_count = sbi->raw_super->hot_ext_count;
-	int total_count = cold_count + hot_count;
-	int start, count;
-	int i;
-
-	if (set) {
-		if (total_count == F2FS_MAX_EXTENSION)
-			return -EINVAL;
-	} else {
-		if (!hot && !cold_count)
-			return -EINVAL;
-		if (hot && !hot_count)
-			return -EINVAL;
-	}
-
-	if (hot) {
-		start = cold_count;
-		count = total_count;
-	} else {
-		start = 0;
-		count = cold_count;
-	}
-
-	for (i = start; i < count; i++) {
-		if (strcmp(name, extlist[i]))
-			continue;
-
-		if (set)
-			return -EINVAL;
-
-		memcpy(extlist[i], extlist[i + 1],
-				F2FS_EXTENSION_LEN * (total_count - i - 1));
-		memset(extlist[total_count - 1], 0, F2FS_EXTENSION_LEN);
-		if (hot)
-			sbi->raw_super->hot_ext_count = hot_count - 1;
-		else
-			sbi->raw_super->extension_count =
-						cpu_to_le32(cold_count - 1);
-		return 0;
-	}
-
-	if (!set)
-		return -EINVAL;
-
-	if (hot) {
-		memcpy(extlist[count], name, strlen(name));
-		sbi->raw_super->hot_ext_count = hot_count + 1;
-	} else {
-		char buf[F2FS_MAX_EXTENSION][F2FS_EXTENSION_LEN];
-
-		memcpy(buf, &extlist[cold_count],
-				F2FS_EXTENSION_LEN * hot_count);
-		memset(extlist[cold_count], 0, F2FS_EXTENSION_LEN);
-		memcpy(extlist[cold_count], name, strlen(name));
-		memcpy(&extlist[cold_count + 1], buf,
-				F2FS_EXTENSION_LEN * hot_count);
-		sbi->raw_super->extension_count = cpu_to_le32(cold_count + 1);
-	}
-	return 0;
-}
-
-static void set_compress_inode(struct f2fs_sb_info *sbi, struct inode *inode,
-						const unsigned char *name)
-{
-	__u8 (*extlist)[F2FS_EXTENSION_LEN] = sbi->raw_super->extension_list;
-	unsigned char (*noext)[F2FS_EXTENSION_LEN] = F2FS_OPTION(sbi).noextensions;
-	unsigned char (*ext)[F2FS_EXTENSION_LEN] = F2FS_OPTION(sbi).extensions;
-	unsigned char ext_cnt = F2FS_OPTION(sbi).compress_ext_cnt;
-	unsigned char noext_cnt = F2FS_OPTION(sbi).nocompress_ext_cnt;
-	int i, cold_count, hot_count;
-
-	if (!f2fs_sb_has_compression(sbi) ||
-			F2FS_I(inode)->i_flags & F2FS_NOCOMP_FL ||
-			!f2fs_may_compress(inode) ||
-			(!ext_cnt && !noext_cnt))
-		return;
-
-	f2fs_down_read(&sbi->sb_lock);
-
-	cold_count = le32_to_cpu(sbi->raw_super->extension_count);
-	hot_count = sbi->raw_super->hot_ext_count;
-
-	for (i = cold_count; i < cold_count + hot_count; i++) {
-		if (is_extension_exist(name, extlist[i], false)) {
-			f2fs_up_read(&sbi->sb_lock);
-			return;
-		}
-	}
-
-	f2fs_up_read(&sbi->sb_lock);
-
-	for (i = 0; i < noext_cnt; i++) {
-		if (is_extension_exist(name, noext[i], false)) {
-			f2fs_disable_compressed_file(inode);
-			return;
-		}
-	}
-
-	if (is_inode_flag_set(inode, FI_COMPRESSED_FILE))
-		return;
-
-	for (i = 0; i < ext_cnt; i++) {
-		if (!is_extension_exist(name, ext[i], false))
-			continue;
-
-		/* Do not use inline_data with compression */
-		stat_dec_inline_inode(inode);
-		clear_inode_flag(inode, FI_INLINE_DATA);
-		set_compress_context(inode);
-		return;
-	}
-}
-
 static int f2fs_create(struct user_namespace *mnt_userns, struct inode *dir,
 		       struct dentry *dentry, umode_t mode, bool excl)
 {
@@ -352,15 +349,13 @@ static int f2fs_create(struct user_namespace *mnt_userns, struct inode *dir,
 	if (err)
 		return err;
 
-	inode = f2fs_new_inode(mnt_userns, dir, mode);
+	inode = f2fs_new_inode(mnt_userns, dir, mode, dentry->d_name.name);
 	if (IS_ERR(inode))
 		return PTR_ERR(inode);
 
 	if (!test_opt(sbi, DISABLE_EXT_IDENTIFY))
 		set_file_temperature(sbi, inode, dentry->d_name.name);
 
-	set_compress_inode(sbi, inode, dentry->d_name.name);
-
 	inode->i_op = &f2fs_file_inode_operations;
 	inode->i_fop = &f2fs_file_operations;
 	inode->i_mapping->a_ops = &f2fs_dblock_aops;
@@ -689,7 +684,7 @@ static int f2fs_symlink(struct user_namespace *mnt_userns, struct inode *dir,
 	if (err)
 		return err;
 
-	inode = f2fs_new_inode(mnt_userns, dir, S_IFLNK | S_IRWXUGO);
+	inode = f2fs_new_inode(mnt_userns, dir, S_IFLNK | S_IRWXUGO, NULL);
 	if (IS_ERR(inode))
 		return PTR_ERR(inode);
 
@@ -760,7 +755,8 @@ static int f2fs_mkdir(struct user_namespace *mnt_userns, struct inode *dir,
 	if (err)
 		return err;
 
-	inode = f2fs_new_inode(mnt_userns, dir, S_IFDIR | mode);
+	inode = f2fs_new_inode(mnt_userns, dir, S_IFDIR | mode,
+						dentry->d_name.name);
 	if (IS_ERR(inode))
 		return PTR_ERR(inode);
 
@@ -817,7 +813,7 @@ static int f2fs_mknod(struct user_namespace *mnt_userns, struct inode *dir,
 	if (err)
 		return err;
 
-	inode = f2fs_new_inode(mnt_userns, dir, mode);
+	inode = f2fs_new_inode(mnt_userns, dir, mode, NULL);
 	if (IS_ERR(inode))
 		return PTR_ERR(inode);
 
@@ -856,7 +852,7 @@ static int __f2fs_tmpfile(struct user_namespace *mnt_userns, struct inode *dir,
 	if (err)
 		return err;
 
-	inode = f2fs_new_inode(mnt_userns, dir, mode);
+	inode = f2fs_new_inode(mnt_userns, dir, mode, NULL);
 	if (IS_ERR(inode))
 		return PTR_ERR(inode);
  

On 2022/11/16 7:00, Jaegeuk Kim wrote:
> If compress_extension is set, and a newly created file matches the
> extension, the file could be marked as compression file. However,
> if inline_data is also enabled, there is no chance to check its
> extension since f2fs_should_compress() always returns false.
> 
> This patch moves set_compress_inode(), which do extension check, in
> f2fs_should_compress() to check extensions before setting inline
> data flag.
> 
> Fixes: 7165841d578e ("f2fs: fix to check inline_data during compressed inode conversion")
> Signed-off-by: Sheng Yong <shengyong@oppo.com>
> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
> ---
> 
>   Checking this version.
> 
>   fs/f2fs/f2fs.h  |   2 +-
>   fs/f2fs/namei.c | 328 ++++++++++++++++++++++++------------------------
>   2 files changed, 163 insertions(+), 167 deletions(-)
> 
> diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
> index b89b5d755ce0..dedac413bf64 100644
> --- a/fs/f2fs/f2fs.h
> +++ b/fs/f2fs/f2fs.h
> @@ -2980,7 +2980,7 @@ static inline void f2fs_change_bit(unsigned int nr, char *addr)
>   /* Flags that should be inherited by new inodes from their parent. */
>   #define F2FS_FL_INHERITED (F2FS_SYNC_FL | F2FS_NODUMP_FL | F2FS_NOATIME_FL | \
>   			   F2FS_DIRSYNC_FL | F2FS_PROJINHERIT_FL | \
> -			   F2FS_CASEFOLD_FL | F2FS_COMPR_FL | F2FS_NOCOMP_FL)
> +			   F2FS_CASEFOLD_FL)
>   
>   /* Flags that are appropriate for regular files (all but dir-specific ones). */
>   #define F2FS_REG_FLMASK		(~(F2FS_DIRSYNC_FL | F2FS_PROJINHERIT_FL | \
> diff --git a/fs/f2fs/namei.c b/fs/f2fs/namei.c
> index e104409c3a0e..cb7441a19d22 100644
> --- a/fs/f2fs/namei.c
> +++ b/fs/f2fs/namei.c
> @@ -22,8 +22,161 @@
>   #include "acl.h"
>   #include <trace/events/f2fs.h>
>   
> +static inline int is_extension_exist(const unsigned char *s, const char *sub,
> +						bool tmp_ext)
> +{
> +	size_t slen = strlen(s);
> +	size_t sublen = strlen(sub);
> +	int i;
> +
> +	if (sublen == 1 && *sub == '*')
> +		return 1;
> +
> +	/*
> +	 * filename format of multimedia file should be defined as:
> +	 * "filename + '.' + extension + (optional: '.' + temp extension)".
> +	 */
> +	if (slen < sublen + 2)
> +		return 0;
> +
> +	if (!tmp_ext) {
> +		/* file has no temp extension */
> +		if (s[slen - sublen - 1] != '.')
> +			return 0;
> +		return !strncasecmp(s + slen - sublen, sub, sublen);
> +	}
> +
> +	for (i = 1; i < slen - sublen; i++) {
> +		if (s[i] != '.')
> +			continue;
> +		if (!strncasecmp(s + i + 1, sub, sublen))
> +			return 1;
> +	}
> +
> +	return 0;
> +}
> +
> +int f2fs_update_extension_list(struct f2fs_sb_info *sbi, const char *name,
> +							bool hot, bool set)
> +{
> +	__u8 (*extlist)[F2FS_EXTENSION_LEN] = sbi->raw_super->extension_list;
> +	int cold_count = le32_to_cpu(sbi->raw_super->extension_count);
> +	int hot_count = sbi->raw_super->hot_ext_count;
> +	int total_count = cold_count + hot_count;
> +	int start, count;
> +	int i;
> +
> +	if (set) {
> +		if (total_count == F2FS_MAX_EXTENSION)
> +			return -EINVAL;
> +	} else {
> +		if (!hot && !cold_count)
> +			return -EINVAL;
> +		if (hot && !hot_count)
> +			return -EINVAL;
> +	}
> +
> +	if (hot) {
> +		start = cold_count;
> +		count = total_count;
> +	} else {
> +		start = 0;
> +		count = cold_count;
> +	}
> +
> +	for (i = start; i < count; i++) {
> +		if (strcmp(name, extlist[i]))
> +			continue;
> +
> +		if (set)
> +			return -EINVAL;
> +
> +		memcpy(extlist[i], extlist[i + 1],
> +				F2FS_EXTENSION_LEN * (total_count - i - 1));
> +		memset(extlist[total_count - 1], 0, F2FS_EXTENSION_LEN);
> +		if (hot)
> +			sbi->raw_super->hot_ext_count = hot_count - 1;
> +		else
> +			sbi->raw_super->extension_count =
> +						cpu_to_le32(cold_count - 1);
> +		return 0;
> +	}
> +
> +	if (!set)
> +		return -EINVAL;
> +
> +	if (hot) {
> +		memcpy(extlist[count], name, strlen(name));
> +		sbi->raw_super->hot_ext_count = hot_count + 1;
> +	} else {
> +		char buf[F2FS_MAX_EXTENSION][F2FS_EXTENSION_LEN];
> +
> +		memcpy(buf, &extlist[cold_count],
> +				F2FS_EXTENSION_LEN * hot_count);
> +		memset(extlist[cold_count], 0, F2FS_EXTENSION_LEN);
> +		memcpy(extlist[cold_count], name, strlen(name));
> +		memcpy(&extlist[cold_count + 1], buf,
> +				F2FS_EXTENSION_LEN * hot_count);
> +		sbi->raw_super->extension_count = cpu_to_le32(cold_count + 1);
> +	}
> +	return 0;
> +}
> +
> +static void set_compress_new_inode(struct f2fs_sb_info *sbi, struct inode *dir,
> +				struct inode *inode, const unsigned char *name)
> +{
> +	__u8 (*extlist)[F2FS_EXTENSION_LEN] = sbi->raw_super->extension_list;
> +	unsigned char (*noext)[F2FS_EXTENSION_LEN] =
> +						F2FS_OPTION(sbi).noextensions;
> +	unsigned char (*ext)[F2FS_EXTENSION_LEN] = F2FS_OPTION(sbi).extensions;
> +	unsigned char ext_cnt = F2FS_OPTION(sbi).compress_ext_cnt;
> +	unsigned char noext_cnt = F2FS_OPTION(sbi).nocompress_ext_cnt;
> +	int i, cold_count, hot_count;
> +
> +	/* Caller should give the name of regular file or directory. */
> +	if (!f2fs_sb_has_compression(sbi) || !name)
> +		return;
> +
> +	if (S_ISDIR(inode->i_mode))
> +		goto inherit_comp;
> +
> +	/* Don't compress hot files. */
> +	f2fs_down_read(&sbi->sb_lock);
> +	cold_count = le32_to_cpu(sbi->raw_super->extension_count);
> +	hot_count = sbi->raw_super->hot_ext_count;
> +	for (i = cold_count; i < cold_count + hot_count; i++)
> +		if (is_extension_exist(name, extlist[i], false))
> +			break;
> +	f2fs_up_read(&sbi->sb_lock);
> +	if (i < (cold_count + hot_count))
> +		return;
> +
> +	/* Don't compress unallowed extension. */
> +	for (i = 0; i < noext_cnt; i++)
> +		if (is_extension_exist(name, noext[i], false))
> +			return;
> +inherit_comp:
> +	/* Inherit the {no-}compression flag in directory */
> +	if (F2FS_I(dir)->i_flags & F2FS_NOCOMP_FL) {
> +		F2FS_I(inode)->i_flags |= F2FS_NOCOMP_FL;
> +		return;

Hi, Jaegeuk,
It should not return immediately here. The scenario here is:

   mount -o compress_extension=txt,compress_mode=user
   mkdir dir
   f2fs_io setflags nocompression dir # set dir nocompression
   touch dir/file.txt
   f2fs_io getflags compression dir/file.txt # file.txt should have 
compression flag

According to f2fs.rst, if dir is set as nocompression, but file's
extension hit compress_extension, then the file should be compressed.
And before set_compress_context later, F2FS_NOCOMP_FL should be
cleared first.

thanks,
shengyong

> +	} else if (F2FS_I(dir)->i_flags & F2FS_COMPR_FL) {
> +		set_compress_context(inode);
> +		return;
> +	}
> +
> +	/* Compress wanting extension. */
> +	for (i = 0; i < ext_cnt; i++) {
> +		if (is_extension_exist(name, ext[i], false)) {
> +			set_compress_context(inode);
> +			return;
> +		}
> +	}
> +}
> +
>   static struct inode *f2fs_new_inode(struct user_namespace *mnt_userns,
> -						struct inode *dir, umode_t mode)
> +						struct inode *dir, umode_t mode,
> +						const char *name)
>   {
>   	struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
>   	nid_t ino;
> @@ -114,12 +267,8 @@ static struct inode *f2fs_new_inode(struct user_namespace *mnt_userns,
>   	if (F2FS_I(inode)->i_flags & F2FS_PROJINHERIT_FL)
>   		set_inode_flag(inode, FI_PROJ_INHERIT);
>   
> -	if (f2fs_sb_has_compression(sbi)) {
> -		/* Inherit the compression flag in directory */
> -		if ((F2FS_I(dir)->i_flags & F2FS_COMPR_FL) &&
> -					f2fs_may_compress(inode))
> -			set_compress_context(inode);
> -	}
> +	/* Check compression first. */
> +	set_compress_new_inode(sbi, dir, inode, name);
>   
>   	/* Should enable inline_data after compression set */
>   	if (test_opt(sbi, INLINE_DATA) && f2fs_may_inline_data(inode))
> @@ -153,40 +302,6 @@ static struct inode *f2fs_new_inode(struct user_namespace *mnt_userns,
>   	return ERR_PTR(err);
>   }
>   
> -static inline int is_extension_exist(const unsigned char *s, const char *sub,
> -						bool tmp_ext)
> -{
> -	size_t slen = strlen(s);
> -	size_t sublen = strlen(sub);
> -	int i;
> -
> -	if (sublen == 1 && *sub == '*')
> -		return 1;
> -
> -	/*
> -	 * filename format of multimedia file should be defined as:
> -	 * "filename + '.' + extension + (optional: '.' + temp extension)".
> -	 */
> -	if (slen < sublen + 2)
> -		return 0;
> -
> -	if (!tmp_ext) {
> -		/* file has no temp extension */
> -		if (s[slen - sublen - 1] != '.')
> -			return 0;
> -		return !strncasecmp(s + slen - sublen, sub, sublen);
> -	}
> -
> -	for (i = 1; i < slen - sublen; i++) {
> -		if (s[i] != '.')
> -			continue;
> -		if (!strncasecmp(s + i + 1, sub, sublen))
> -			return 1;
> -	}
> -
> -	return 0;
> -}
> -
>   /*
>    * Set file's temperature for hot/cold data separation
>    */
> @@ -217,124 +332,6 @@ static inline void set_file_temperature(struct f2fs_sb_info *sbi, struct inode *
>   		file_set_hot(inode);
>   }
>   
> -int f2fs_update_extension_list(struct f2fs_sb_info *sbi, const char *name,
> -							bool hot, bool set)
> -{
> -	__u8 (*extlist)[F2FS_EXTENSION_LEN] = sbi->raw_super->extension_list;
> -	int cold_count = le32_to_cpu(sbi->raw_super->extension_count);
> -	int hot_count = sbi->raw_super->hot_ext_count;
> -	int total_count = cold_count + hot_count;
> -	int start, count;
> -	int i;
> -
> -	if (set) {
> -		if (total_count == F2FS_MAX_EXTENSION)
> -			return -EINVAL;
> -	} else {
> -		if (!hot && !cold_count)
> -			return -EINVAL;
> -		if (hot && !hot_count)
> -			return -EINVAL;
> -	}
> -
> -	if (hot) {
> -		start = cold_count;
> -		count = total_count;
> -	} else {
> -		start = 0;
> -		count = cold_count;
> -	}
> -
> -	for (i = start; i < count; i++) {
> -		if (strcmp(name, extlist[i]))
> -			continue;
> -
> -		if (set)
> -			return -EINVAL;
> -
> -		memcpy(extlist[i], extlist[i + 1],
> -				F2FS_EXTENSION_LEN * (total_count - i - 1));
> -		memset(extlist[total_count - 1], 0, F2FS_EXTENSION_LEN);
> -		if (hot)
> -			sbi->raw_super->hot_ext_count = hot_count - 1;
> -		else
> -			sbi->raw_super->extension_count =
> -						cpu_to_le32(cold_count - 1);
> -		return 0;
> -	}
> -
> -	if (!set)
> -		return -EINVAL;
> -
> -	if (hot) {
> -		memcpy(extlist[count], name, strlen(name));
> -		sbi->raw_super->hot_ext_count = hot_count + 1;
> -	} else {
> -		char buf[F2FS_MAX_EXTENSION][F2FS_EXTENSION_LEN];
> -
> -		memcpy(buf, &extlist[cold_count],
> -				F2FS_EXTENSION_LEN * hot_count);
> -		memset(extlist[cold_count], 0, F2FS_EXTENSION_LEN);
> -		memcpy(extlist[cold_count], name, strlen(name));
> -		memcpy(&extlist[cold_count + 1], buf,
> -				F2FS_EXTENSION_LEN * hot_count);
> -		sbi->raw_super->extension_count = cpu_to_le32(cold_count + 1);
> -	}
> -	return 0;
> -}
> -
> -static void set_compress_inode(struct f2fs_sb_info *sbi, struct inode *inode,
> -						const unsigned char *name)
> -{
> -	__u8 (*extlist)[F2FS_EXTENSION_LEN] = sbi->raw_super->extension_list;
> -	unsigned char (*noext)[F2FS_EXTENSION_LEN] = F2FS_OPTION(sbi).noextensions;
> -	unsigned char (*ext)[F2FS_EXTENSION_LEN] = F2FS_OPTION(sbi).extensions;
> -	unsigned char ext_cnt = F2FS_OPTION(sbi).compress_ext_cnt;
> -	unsigned char noext_cnt = F2FS_OPTION(sbi).nocompress_ext_cnt;
> -	int i, cold_count, hot_count;
> -
> -	if (!f2fs_sb_has_compression(sbi) ||
> -			F2FS_I(inode)->i_flags & F2FS_NOCOMP_FL ||
> -			!f2fs_may_compress(inode) ||
> -			(!ext_cnt && !noext_cnt))
> -		return;
> -
> -	f2fs_down_read(&sbi->sb_lock);
> -
> -	cold_count = le32_to_cpu(sbi->raw_super->extension_count);
> -	hot_count = sbi->raw_super->hot_ext_count;
> -
> -	for (i = cold_count; i < cold_count + hot_count; i++) {
> -		if (is_extension_exist(name, extlist[i], false)) {
> -			f2fs_up_read(&sbi->sb_lock);
> -			return;
> -		}
> -	}
> -
> -	f2fs_up_read(&sbi->sb_lock);
> -
> -	for (i = 0; i < noext_cnt; i++) {
> -		if (is_extension_exist(name, noext[i], false)) {
> -			f2fs_disable_compressed_file(inode);
> -			return;
> -		}
> -	}
> -
> -	if (is_inode_flag_set(inode, FI_COMPRESSED_FILE))
> -		return;
> -
> -	for (i = 0; i < ext_cnt; i++) {
> -		if (!is_extension_exist(name, ext[i], false))
> -			continue;
> -
> -		/* Do not use inline_data with compression */
> -		stat_dec_inline_inode(inode);
> -		clear_inode_flag(inode, FI_INLINE_DATA);
> -		set_compress_context(inode);
> -		return;
> -	}
> -}
> -
>   static int f2fs_create(struct user_namespace *mnt_userns, struct inode *dir,
>   		       struct dentry *dentry, umode_t mode, bool excl)
>   {
> @@ -352,15 +349,13 @@ static int f2fs_create(struct user_namespace *mnt_userns, struct inode *dir,
>   	if (err)
>   		return err;
>   
> -	inode = f2fs_new_inode(mnt_userns, dir, mode);
> +	inode = f2fs_new_inode(mnt_userns, dir, mode, dentry->d_name.name);
>   	if (IS_ERR(inode))
>   		return PTR_ERR(inode);
>   
>   	if (!test_opt(sbi, DISABLE_EXT_IDENTIFY))
>   		set_file_temperature(sbi, inode, dentry->d_name.name);
>   
> -	set_compress_inode(sbi, inode, dentry->d_name.name);
> -
>   	inode->i_op = &f2fs_file_inode_operations;
>   	inode->i_fop = &f2fs_file_operations;
>   	inode->i_mapping->a_ops = &f2fs_dblock_aops;
> @@ -689,7 +684,7 @@ static int f2fs_symlink(struct user_namespace *mnt_userns, struct inode *dir,
>   	if (err)
>   		return err;
>   
> -	inode = f2fs_new_inode(mnt_userns, dir, S_IFLNK | S_IRWXUGO);
> +	inode = f2fs_new_inode(mnt_userns, dir, S_IFLNK | S_IRWXUGO, NULL);
>   	if (IS_ERR(inode))
>   		return PTR_ERR(inode);
>   
> @@ -760,7 +755,8 @@ static int f2fs_mkdir(struct user_namespace *mnt_userns, struct inode *dir,
>   	if (err)
>   		return err;
>   
> -	inode = f2fs_new_inode(mnt_userns, dir, S_IFDIR | mode);
> +	inode = f2fs_new_inode(mnt_userns, dir, S_IFDIR | mode,
> +						dentry->d_name.name);
>   	if (IS_ERR(inode))
>   		return PTR_ERR(inode);
>   
> @@ -817,7 +813,7 @@ static int f2fs_mknod(struct user_namespace *mnt_userns, struct inode *dir,
>   	if (err)
>   		return err;
>   
> -	inode = f2fs_new_inode(mnt_userns, dir, mode);
> +	inode = f2fs_new_inode(mnt_userns, dir, mode, NULL);
>   	if (IS_ERR(inode))
>   		return PTR_ERR(inode);
>   
> @@ -856,7 +852,7 @@ static int __f2fs_tmpfile(struct user_namespace *mnt_userns, struct inode *dir,
>   	if (err)
>   		return err;
>   
> -	inode = f2fs_new_inode(mnt_userns, dir, mode);
> +	inode = f2fs_new_inode(mnt_userns, dir, mode, NULL);
>   	if (IS_ERR(inode))
>   		return PTR_ERR(inode);
>
  

If compress_extension is set, and a newly created file matches the
extension, the file could be marked as compression file. However,
if inline_data is also enabled, there is no chance to check its
extension since f2fs_should_compress() always returns false.

This patch moves set_compress_inode(), which do extension check, in
f2fs_should_compress() to check extensions before setting inline
data flag.

Fixes: 7165841d578e ("f2fs: fix to check inline_data during compressed inode conversion")
Signed-off-by: Sheng Yong <shengyong@oppo.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
---
 fs/f2fs/f2fs.h  |   2 +-
 fs/f2fs/namei.c | 325 +++++++++++++++++++++++-------------------------
 2 files changed, 160 insertions(+), 167 deletions(-)

diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
index b89b5d755ce0..dedac413bf64 100644
--- a/fs/f2fs/f2fs.h
+++ b/fs/f2fs/f2fs.h
@@ -2980,7 +2980,7 @@ static inline void f2fs_change_bit(unsigned int nr, char *addr)
 /* Flags that should be inherited by new inodes from their parent. */
 #define F2FS_FL_INHERITED (F2FS_SYNC_FL | F2FS_NODUMP_FL | F2FS_NOATIME_FL | \
 			   F2FS_DIRSYNC_FL | F2FS_PROJINHERIT_FL | \
-			   F2FS_CASEFOLD_FL | F2FS_COMPR_FL | F2FS_NOCOMP_FL)
+			   F2FS_CASEFOLD_FL)
 
 /* Flags that are appropriate for regular files (all but dir-specific ones). */
 #define F2FS_REG_FLMASK		(~(F2FS_DIRSYNC_FL | F2FS_PROJINHERIT_FL | \
diff --git a/fs/f2fs/namei.c b/fs/f2fs/namei.c
index e104409c3a0e..c25009bb72f2 100644
--- a/fs/f2fs/namei.c
+++ b/fs/f2fs/namei.c
@@ -22,8 +22,158 @@
 #include "acl.h"
 #include <trace/events/f2fs.h>
 
+static inline int is_extension_exist(const unsigned char *s, const char *sub,
+						bool tmp_ext)
+{
+	size_t slen = strlen(s);
+	size_t sublen = strlen(sub);
+	int i;
+
+	if (sublen == 1 && *sub == '*')
+		return 1;
+
+	/*
+	 * filename format of multimedia file should be defined as:
+	 * "filename + '.' + extension + (optional: '.' + temp extension)".
+	 */
+	if (slen < sublen + 2)
+		return 0;
+
+	if (!tmp_ext) {
+		/* file has no temp extension */
+		if (s[slen - sublen - 1] != '.')
+			return 0;
+		return !strncasecmp(s + slen - sublen, sub, sublen);
+	}
+
+	for (i = 1; i < slen - sublen; i++) {
+		if (s[i] != '.')
+			continue;
+		if (!strncasecmp(s + i + 1, sub, sublen))
+			return 1;
+	}
+
+	return 0;
+}
+
+int f2fs_update_extension_list(struct f2fs_sb_info *sbi, const char *name,
+							bool hot, bool set)
+{
+	__u8 (*extlist)[F2FS_EXTENSION_LEN] = sbi->raw_super->extension_list;
+	int cold_count = le32_to_cpu(sbi->raw_super->extension_count);
+	int hot_count = sbi->raw_super->hot_ext_count;
+	int total_count = cold_count + hot_count;
+	int start, count;
+	int i;
+
+	if (set) {
+		if (total_count == F2FS_MAX_EXTENSION)
+			return -EINVAL;
+	} else {
+		if (!hot && !cold_count)
+			return -EINVAL;
+		if (hot && !hot_count)
+			return -EINVAL;
+	}
+
+	if (hot) {
+		start = cold_count;
+		count = total_count;
+	} else {
+		start = 0;
+		count = cold_count;
+	}
+
+	for (i = start; i < count; i++) {
+		if (strcmp(name, extlist[i]))
+			continue;
+
+		if (set)
+			return -EINVAL;
+
+		memcpy(extlist[i], extlist[i + 1],
+				F2FS_EXTENSION_LEN * (total_count - i - 1));
+		memset(extlist[total_count - 1], 0, F2FS_EXTENSION_LEN);
+		if (hot)
+			sbi->raw_super->hot_ext_count = hot_count - 1;
+		else
+			sbi->raw_super->extension_count =
+						cpu_to_le32(cold_count - 1);
+		return 0;
+	}
+
+	if (!set)
+		return -EINVAL;
+
+	if (hot) {
+		memcpy(extlist[count], name, strlen(name));
+		sbi->raw_super->hot_ext_count = hot_count + 1;
+	} else {
+		char buf[F2FS_MAX_EXTENSION][F2FS_EXTENSION_LEN];
+
+		memcpy(buf, &extlist[cold_count],
+				F2FS_EXTENSION_LEN * hot_count);
+		memset(extlist[cold_count], 0, F2FS_EXTENSION_LEN);
+		memcpy(extlist[cold_count], name, strlen(name));
+		memcpy(&extlist[cold_count + 1], buf,
+				F2FS_EXTENSION_LEN * hot_count);
+		sbi->raw_super->extension_count = cpu_to_le32(cold_count + 1);
+	}
+	return 0;
+}
+
+static void set_compress_new_inode(struct f2fs_sb_info *sbi, struct inode *dir,
+				struct inode *inode, const unsigned char *name)
+{
+	__u8 (*extlist)[F2FS_EXTENSION_LEN] = sbi->raw_super->extension_list;
+	unsigned char (*noext)[F2FS_EXTENSION_LEN] =
+						F2FS_OPTION(sbi).noextensions;
+	unsigned char (*ext)[F2FS_EXTENSION_LEN] = F2FS_OPTION(sbi).extensions;
+	unsigned char ext_cnt = F2FS_OPTION(sbi).compress_ext_cnt;
+	unsigned char noext_cnt = F2FS_OPTION(sbi).nocompress_ext_cnt;
+	int i, cold_count, hot_count;
+
+	/* Caller should give the name of regular file or directory. */
+	if (!f2fs_sb_has_compression(sbi) || !name)
+		return;
+
+	if (S_ISDIR(inode->i_mode))
+		goto inherit_comp;
+
+	/* Don't compress hot files. */
+	f2fs_down_read(&sbi->sb_lock);
+	cold_count = le32_to_cpu(sbi->raw_super->extension_count);
+	hot_count = sbi->raw_super->hot_ext_count;
+	for (i = cold_count; i < cold_count + hot_count; i++)
+		if (is_extension_exist(name, extlist[i], false))
+			break;
+	f2fs_up_read(&sbi->sb_lock);
+	if (i < (cold_count + hot_count))
+		return;
+
+	/* Don't compress unallowed extension. */
+	for (i = 0; i < noext_cnt; i++)
+		if (is_extension_exist(name, noext[i], false))
+			return;
+
+	/* Compress wanting extension. */
+	for (i = 0; i < ext_cnt; i++) {
+		if (is_extension_exist(name, ext[i], false)) {
+			set_compress_context(inode);
+			return;
+		}
+	}
+inherit_comp:
+	/* Inherit the {no-}compression flag in directory */
+	if (F2FS_I(dir)->i_flags & F2FS_NOCOMP_FL)
+		F2FS_I(inode)->i_flags |= F2FS_NOCOMP_FL;
+	else if (F2FS_I(dir)->i_flags & F2FS_COMPR_FL)
+		set_compress_context(inode);
+}
+
 static struct inode *f2fs_new_inode(struct user_namespace *mnt_userns,
-						struct inode *dir, umode_t mode)
+						struct inode *dir, umode_t mode,
+						const char *name)
 {
 	struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
 	nid_t ino;
@@ -114,12 +264,8 @@ static struct inode *f2fs_new_inode(struct user_namespace *mnt_userns,
 	if (F2FS_I(inode)->i_flags & F2FS_PROJINHERIT_FL)
 		set_inode_flag(inode, FI_PROJ_INHERIT);
 
-	if (f2fs_sb_has_compression(sbi)) {
-		/* Inherit the compression flag in directory */
-		if ((F2FS_I(dir)->i_flags & F2FS_COMPR_FL) &&
-					f2fs_may_compress(inode))
-			set_compress_context(inode);
-	}
+	/* Check compression first. */
+	set_compress_new_inode(sbi, dir, inode, name);
 
 	/* Should enable inline_data after compression set */
 	if (test_opt(sbi, INLINE_DATA) && f2fs_may_inline_data(inode))
@@ -153,40 +299,6 @@ static struct inode *f2fs_new_inode(struct user_namespace *mnt_userns,
 	return ERR_PTR(err);
 }
 
-static inline int is_extension_exist(const unsigned char *s, const char *sub,
-						bool tmp_ext)
-{
-	size_t slen = strlen(s);
-	size_t sublen = strlen(sub);
-	int i;
-
-	if (sublen == 1 && *sub == '*')
-		return 1;
-
-	/*
-	 * filename format of multimedia file should be defined as:
-	 * "filename + '.' + extension + (optional: '.' + temp extension)".
-	 */
-	if (slen < sublen + 2)
-		return 0;
-
-	if (!tmp_ext) {
-		/* file has no temp extension */
-		if (s[slen - sublen - 1] != '.')
-			return 0;
-		return !strncasecmp(s + slen - sublen, sub, sublen);
-	}
-
-	for (i = 1; i < slen - sublen; i++) {
-		if (s[i] != '.')
-			continue;
-		if (!strncasecmp(s + i + 1, sub, sublen))
-			return 1;
-	}
-
-	return 0;
-}
-
 /*
  * Set file's temperature for hot/cold data separation
  */
@@ -217,124 +329,6 @@ static inline void set_file_temperature(struct f2fs_sb_info *sbi, struct inode *
 		file_set_hot(inode);
 }
 
-int f2fs_update_extension_list(struct f2fs_sb_info *sbi, const char *name,
-							bool hot, bool set)
-{
-	__u8 (*extlist)[F2FS_EXTENSION_LEN] = sbi->raw_super->extension_list;
-	int cold_count = le32_to_cpu(sbi->raw_super->extension_count);
-	int hot_count = sbi->raw_super->hot_ext_count;
-	int total_count = cold_count + hot_count;
-	int start, count;
-	int i;
-
-	if (set) {
-		if (total_count == F2FS_MAX_EXTENSION)
-			return -EINVAL;
-	} else {
-		if (!hot && !cold_count)
-			return -EINVAL;
-		if (hot && !hot_count)
-			return -EINVAL;
-	}
-
-	if (hot) {
-		start = cold_count;
-		count = total_count;
-	} else {
-		start = 0;
-		count = cold_count;
-	}
-
-	for (i = start; i < count; i++) {
-		if (strcmp(name, extlist[i]))
-			continue;
-
-		if (set)
-			return -EINVAL;
-
-		memcpy(extlist[i], extlist[i + 1],
-				F2FS_EXTENSION_LEN * (total_count - i - 1));
-		memset(extlist[total_count - 1], 0, F2FS_EXTENSION_LEN);
-		if (hot)
-			sbi->raw_super->hot_ext_count = hot_count - 1;
-		else
-			sbi->raw_super->extension_count =
-						cpu_to_le32(cold_count - 1);
-		return 0;
-	}
-
-	if (!set)
-		return -EINVAL;
-
-	if (hot) {
-		memcpy(extlist[count], name, strlen(name));
-		sbi->raw_super->hot_ext_count = hot_count + 1;
-	} else {
-		char buf[F2FS_MAX_EXTENSION][F2FS_EXTENSION_LEN];
-
-		memcpy(buf, &extlist[cold_count],
-				F2FS_EXTENSION_LEN * hot_count);
-		memset(extlist[cold_count], 0, F2FS_EXTENSION_LEN);
-		memcpy(extlist[cold_count], name, strlen(name));
-		memcpy(&extlist[cold_count + 1], buf,
-				F2FS_EXTENSION_LEN * hot_count);
-		sbi->raw_super->extension_count = cpu_to_le32(cold_count + 1);
-	}
-	return 0;
-}
-
-static void set_compress_inode(struct f2fs_sb_info *sbi, struct inode *inode,
-						const unsigned char *name)
-{
-	__u8 (*extlist)[F2FS_EXTENSION_LEN] = sbi->raw_super->extension_list;
-	unsigned char (*noext)[F2FS_EXTENSION_LEN] = F2FS_OPTION(sbi).noextensions;
-	unsigned char (*ext)[F2FS_EXTENSION_LEN] = F2FS_OPTION(sbi).extensions;
-	unsigned char ext_cnt = F2FS_OPTION(sbi).compress_ext_cnt;
-	unsigned char noext_cnt = F2FS_OPTION(sbi).nocompress_ext_cnt;
-	int i, cold_count, hot_count;
-
-	if (!f2fs_sb_has_compression(sbi) ||
-			F2FS_I(inode)->i_flags & F2FS_NOCOMP_FL ||
-			!f2fs_may_compress(inode) ||
-			(!ext_cnt && !noext_cnt))
-		return;
-
-	f2fs_down_read(&sbi->sb_lock);
-
-	cold_count = le32_to_cpu(sbi->raw_super->extension_count);
-	hot_count = sbi->raw_super->hot_ext_count;
-
-	for (i = cold_count; i < cold_count + hot_count; i++) {
-		if (is_extension_exist(name, extlist[i], false)) {
-			f2fs_up_read(&sbi->sb_lock);
-			return;
-		}
-	}
-
-	f2fs_up_read(&sbi->sb_lock);
-
-	for (i = 0; i < noext_cnt; i++) {
-		if (is_extension_exist(name, noext[i], false)) {
-			f2fs_disable_compressed_file(inode);
-			return;
-		}
-	}
-
-	if (is_inode_flag_set(inode, FI_COMPRESSED_FILE))
-		return;
-
-	for (i = 0; i < ext_cnt; i++) {
-		if (!is_extension_exist(name, ext[i], false))
-			continue;
-
-		/* Do not use inline_data with compression */
-		stat_dec_inline_inode(inode);
-		clear_inode_flag(inode, FI_INLINE_DATA);
-		set_compress_context(inode);
-		return;
-	}
-}
-
 static int f2fs_create(struct user_namespace *mnt_userns, struct inode *dir,
 		       struct dentry *dentry, umode_t mode, bool excl)
 {
@@ -352,15 +346,13 @@ static int f2fs_create(struct user_namespace *mnt_userns, struct inode *dir,
 	if (err)
 		return err;
 
-	inode = f2fs_new_inode(mnt_userns, dir, mode);
+	inode = f2fs_new_inode(mnt_userns, dir, mode, dentry->d_name.name);
 	if (IS_ERR(inode))
 		return PTR_ERR(inode);
 
 	if (!test_opt(sbi, DISABLE_EXT_IDENTIFY))
 		set_file_temperature(sbi, inode, dentry->d_name.name);
 
-	set_compress_inode(sbi, inode, dentry->d_name.name);
-
 	inode->i_op = &f2fs_file_inode_operations;
 	inode->i_fop = &f2fs_file_operations;
 	inode->i_mapping->a_ops = &f2fs_dblock_aops;
@@ -689,7 +681,7 @@ static int f2fs_symlink(struct user_namespace *mnt_userns, struct inode *dir,
 	if (err)
 		return err;
 
-	inode = f2fs_new_inode(mnt_userns, dir, S_IFLNK | S_IRWXUGO);
+	inode = f2fs_new_inode(mnt_userns, dir, S_IFLNK | S_IRWXUGO, NULL);
 	if (IS_ERR(inode))
 		return PTR_ERR(inode);
 
@@ -760,7 +752,8 @@ static int f2fs_mkdir(struct user_namespace *mnt_userns, struct inode *dir,
 	if (err)
 		return err;
 
-	inode = f2fs_new_inode(mnt_userns, dir, S_IFDIR | mode);
+	inode = f2fs_new_inode(mnt_userns, dir, S_IFDIR | mode,
+						dentry->d_name.name);
 	if (IS_ERR(inode))
 		return PTR_ERR(inode);
 
@@ -817,7 +810,7 @@ static int f2fs_mknod(struct user_namespace *mnt_userns, struct inode *dir,
 	if (err)
 		return err;
 
-	inode = f2fs_new_inode(mnt_userns, dir, mode);
+	inode = f2fs_new_inode(mnt_userns, dir, mode, NULL);
 	if (IS_ERR(inode))
 		return PTR_ERR(inode);
 
@@ -856,7 +849,7 @@ static int __f2fs_tmpfile(struct user_namespace *mnt_userns, struct inode *dir,
 	if (err)
 		return err;
 
-	inode = f2fs_new_inode(mnt_userns, dir, mode);
+	inode = f2fs_new_inode(mnt_userns, dir, mode, NULL);
 	if (IS_ERR(inode))
 		return PTR_ERR(inode);
  

On 11/16, Sheng Yong wrote:
> 
> 
> On 2022/11/16 7:00, Jaegeuk Kim wrote:
> > If compress_extension is set, and a newly created file matches the
> > extension, the file could be marked as compression file. However,
> > if inline_data is also enabled, there is no chance to check its
> > extension since f2fs_should_compress() always returns false.
> > 
> > This patch moves set_compress_inode(), which do extension check, in
> > f2fs_should_compress() to check extensions before setting inline
> > data flag.
> > 
> > Fixes: 7165841d578e ("f2fs: fix to check inline_data during compressed inode conversion")
> > Signed-off-by: Sheng Yong <shengyong@oppo.com>
> > Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
> > ---
> > 
> >   Checking this version.
> > 
> >   fs/f2fs/f2fs.h  |   2 +-
> >   fs/f2fs/namei.c | 328 ++++++++++++++++++++++++------------------------
> >   2 files changed, 163 insertions(+), 167 deletions(-)
> > 
> > diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
> > index b89b5d755ce0..dedac413bf64 100644
> > --- a/fs/f2fs/f2fs.h
> > +++ b/fs/f2fs/f2fs.h
> > @@ -2980,7 +2980,7 @@ static inline void f2fs_change_bit(unsigned int nr, char *addr)
> >   /* Flags that should be inherited by new inodes from their parent. */
> >   #define F2FS_FL_INHERITED (F2FS_SYNC_FL | F2FS_NODUMP_FL | F2FS_NOATIME_FL | \
> >   			   F2FS_DIRSYNC_FL | F2FS_PROJINHERIT_FL | \
> > -			   F2FS_CASEFOLD_FL | F2FS_COMPR_FL | F2FS_NOCOMP_FL)
> > +			   F2FS_CASEFOLD_FL)
> >   /* Flags that are appropriate for regular files (all but dir-specific ones). */
> >   #define F2FS_REG_FLMASK		(~(F2FS_DIRSYNC_FL | F2FS_PROJINHERIT_FL | \
> > diff --git a/fs/f2fs/namei.c b/fs/f2fs/namei.c
> > index e104409c3a0e..cb7441a19d22 100644
> > --- a/fs/f2fs/namei.c
> > +++ b/fs/f2fs/namei.c
> > @@ -22,8 +22,161 @@
> >   #include "acl.h"
> >   #include <trace/events/f2fs.h>
> > +static inline int is_extension_exist(const unsigned char *s, const char *sub,
> > +						bool tmp_ext)
> > +{
> > +	size_t slen = strlen(s);
> > +	size_t sublen = strlen(sub);
> > +	int i;
> > +
> > +	if (sublen == 1 && *sub == '*')
> > +		return 1;
> > +
> > +	/*
> > +	 * filename format of multimedia file should be defined as:
> > +	 * "filename + '.' + extension + (optional: '.' + temp extension)".
> > +	 */
> > +	if (slen < sublen + 2)
> > +		return 0;
> > +
> > +	if (!tmp_ext) {
> > +		/* file has no temp extension */
> > +		if (s[slen - sublen - 1] != '.')
> > +			return 0;
> > +		return !strncasecmp(s + slen - sublen, sub, sublen);
> > +	}
> > +
> > +	for (i = 1; i < slen - sublen; i++) {
> > +		if (s[i] != '.')
> > +			continue;
> > +		if (!strncasecmp(s + i + 1, sub, sublen))
> > +			return 1;
> > +	}
> > +
> > +	return 0;
> > +}
> > +
> > +int f2fs_update_extension_list(struct f2fs_sb_info *sbi, const char *name,
> > +							bool hot, bool set)
> > +{
> > +	__u8 (*extlist)[F2FS_EXTENSION_LEN] = sbi->raw_super->extension_list;
> > +	int cold_count = le32_to_cpu(sbi->raw_super->extension_count);
> > +	int hot_count = sbi->raw_super->hot_ext_count;
> > +	int total_count = cold_count + hot_count;
> > +	int start, count;
> > +	int i;
> > +
> > +	if (set) {
> > +		if (total_count == F2FS_MAX_EXTENSION)
> > +			return -EINVAL;
> > +	} else {
> > +		if (!hot && !cold_count)
> > +			return -EINVAL;
> > +		if (hot && !hot_count)
> > +			return -EINVAL;
> > +	}
> > +
> > +	if (hot) {
> > +		start = cold_count;
> > +		count = total_count;
> > +	} else {
> > +		start = 0;
> > +		count = cold_count;
> > +	}
> > +
> > +	for (i = start; i < count; i++) {
> > +		if (strcmp(name, extlist[i]))
> > +			continue;
> > +
> > +		if (set)
> > +			return -EINVAL;
> > +
> > +		memcpy(extlist[i], extlist[i + 1],
> > +				F2FS_EXTENSION_LEN * (total_count - i - 1));
> > +		memset(extlist[total_count - 1], 0, F2FS_EXTENSION_LEN);
> > +		if (hot)
> > +			sbi->raw_super->hot_ext_count = hot_count - 1;
> > +		else
> > +			sbi->raw_super->extension_count =
> > +						cpu_to_le32(cold_count - 1);
> > +		return 0;
> > +	}
> > +
> > +	if (!set)
> > +		return -EINVAL;
> > +
> > +	if (hot) {
> > +		memcpy(extlist[count], name, strlen(name));
> > +		sbi->raw_super->hot_ext_count = hot_count + 1;
> > +	} else {
> > +		char buf[F2FS_MAX_EXTENSION][F2FS_EXTENSION_LEN];
> > +
> > +		memcpy(buf, &extlist[cold_count],
> > +				F2FS_EXTENSION_LEN * hot_count);
> > +		memset(extlist[cold_count], 0, F2FS_EXTENSION_LEN);
> > +		memcpy(extlist[cold_count], name, strlen(name));
> > +		memcpy(&extlist[cold_count + 1], buf,
> > +				F2FS_EXTENSION_LEN * hot_count);
> > +		sbi->raw_super->extension_count = cpu_to_le32(cold_count + 1);
> > +	}
> > +	return 0;
> > +}
> > +
> > +static void set_compress_new_inode(struct f2fs_sb_info *sbi, struct inode *dir,
> > +				struct inode *inode, const unsigned char *name)
> > +{
> > +	__u8 (*extlist)[F2FS_EXTENSION_LEN] = sbi->raw_super->extension_list;
> > +	unsigned char (*noext)[F2FS_EXTENSION_LEN] =
> > +						F2FS_OPTION(sbi).noextensions;
> > +	unsigned char (*ext)[F2FS_EXTENSION_LEN] = F2FS_OPTION(sbi).extensions;
> > +	unsigned char ext_cnt = F2FS_OPTION(sbi).compress_ext_cnt;
> > +	unsigned char noext_cnt = F2FS_OPTION(sbi).nocompress_ext_cnt;
> > +	int i, cold_count, hot_count;
> > +
> > +	/* Caller should give the name of regular file or directory. */
> > +	if (!f2fs_sb_has_compression(sbi) || !name)
> > +		return;
> > +
> > +	if (S_ISDIR(inode->i_mode))
> > +		goto inherit_comp;
> > +
> > +	/* Don't compress hot files. */
> > +	f2fs_down_read(&sbi->sb_lock);
> > +	cold_count = le32_to_cpu(sbi->raw_super->extension_count);
> > +	hot_count = sbi->raw_super->hot_ext_count;
> > +	for (i = cold_count; i < cold_count + hot_count; i++)
> > +		if (is_extension_exist(name, extlist[i], false))
> > +			break;
> > +	f2fs_up_read(&sbi->sb_lock);
> > +	if (i < (cold_count + hot_count))
> > +		return;
> > +
> > +	/* Don't compress unallowed extension. */
> > +	for (i = 0; i < noext_cnt; i++)
> > +		if (is_extension_exist(name, noext[i], false))
> > +			return;
> > +inherit_comp:
> > +	/* Inherit the {no-}compression flag in directory */
> > +	if (F2FS_I(dir)->i_flags & F2FS_NOCOMP_FL) {
> > +		F2FS_I(inode)->i_flags |= F2FS_NOCOMP_FL;
> > +		return;
> 
> Hi, Jaegeuk,
> It should not return immediately here. The scenario here is:
> 
>   mount -o compress_extension=txt,compress_mode=user
>   mkdir dir
>   f2fs_io setflags nocompression dir # set dir nocompression
>   touch dir/file.txt
>   f2fs_io getflags compression dir/file.txt # file.txt should have
> compression flag

I see. Sent out v4.

> 
> According to f2fs.rst, if dir is set as nocompression, but file's
> extension hit compress_extension, then the file should be compressed.
> And before set_compress_context later, F2FS_NOCOMP_FL should be
> cleared first.
> 
> thanks,
> shengyong
> 
> > +	} else if (F2FS_I(dir)->i_flags & F2FS_COMPR_FL) {
> > +		set_compress_context(inode);
> > +		return;
> > +	}
> > +
> > +	/* Compress wanting extension. */
> > +	for (i = 0; i < ext_cnt; i++) {
> > +		if (is_extension_exist(name, ext[i], false)) {
> > +			set_compress_context(inode);
> > +			return;
> > +		}
> > +	}
> > +}
> > +
> >   static struct inode *f2fs_new_inode(struct user_namespace *mnt_userns,
> > -						struct inode *dir, umode_t mode)
> > +						struct inode *dir, umode_t mode,
> > +						const char *name)
> >   {
> >   	struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
> >   	nid_t ino;
> > @@ -114,12 +267,8 @@ static struct inode *f2fs_new_inode(struct user_namespace *mnt_userns,
> >   	if (F2FS_I(inode)->i_flags & F2FS_PROJINHERIT_FL)
> >   		set_inode_flag(inode, FI_PROJ_INHERIT);
> > -	if (f2fs_sb_has_compression(sbi)) {
> > -		/* Inherit the compression flag in directory */
> > -		if ((F2FS_I(dir)->i_flags & F2FS_COMPR_FL) &&
> > -					f2fs_may_compress(inode))
> > -			set_compress_context(inode);
> > -	}
> > +	/* Check compression first. */
> > +	set_compress_new_inode(sbi, dir, inode, name);
> >   	/* Should enable inline_data after compression set */
> >   	if (test_opt(sbi, INLINE_DATA) && f2fs_may_inline_data(inode))
> > @@ -153,40 +302,6 @@ static struct inode *f2fs_new_inode(struct user_namespace *mnt_userns,
> >   	return ERR_PTR(err);
> >   }
> > -static inline int is_extension_exist(const unsigned char *s, const char *sub,
> > -						bool tmp_ext)
> > -{
> > -	size_t slen = strlen(s);
> > -	size_t sublen = strlen(sub);
> > -	int i;
> > -
> > -	if (sublen == 1 && *sub == '*')
> > -		return 1;
> > -
> > -	/*
> > -	 * filename format of multimedia file should be defined as:
> > -	 * "filename + '.' + extension + (optional: '.' + temp extension)".
> > -	 */
> > -	if (slen < sublen + 2)
> > -		return 0;
> > -
> > -	if (!tmp_ext) {
> > -		/* file has no temp extension */
> > -		if (s[slen - sublen - 1] != '.')
> > -			return 0;
> > -		return !strncasecmp(s + slen - sublen, sub, sublen);
> > -	}
> > -
> > -	for (i = 1; i < slen - sublen; i++) {
> > -		if (s[i] != '.')
> > -			continue;
> > -		if (!strncasecmp(s + i + 1, sub, sublen))
> > -			return 1;
> > -	}
> > -
> > -	return 0;
> > -}
> > -
> >   /*
> >    * Set file's temperature for hot/cold data separation
> >    */
> > @@ -217,124 +332,6 @@ static inline void set_file_temperature(struct f2fs_sb_info *sbi, struct inode *
> >   		file_set_hot(inode);
> >   }
> > -int f2fs_update_extension_list(struct f2fs_sb_info *sbi, const char *name,
> > -							bool hot, bool set)
> > -{
> > -	__u8 (*extlist)[F2FS_EXTENSION_LEN] = sbi->raw_super->extension_list;
> > -	int cold_count = le32_to_cpu(sbi->raw_super->extension_count);
> > -	int hot_count = sbi->raw_super->hot_ext_count;
> > -	int total_count = cold_count + hot_count;
> > -	int start, count;
> > -	int i;
> > -
> > -	if (set) {
> > -		if (total_count == F2FS_MAX_EXTENSION)
> > -			return -EINVAL;
> > -	} else {
> > -		if (!hot && !cold_count)
> > -			return -EINVAL;
> > -		if (hot && !hot_count)
> > -			return -EINVAL;
> > -	}
> > -
> > -	if (hot) {
> > -		start = cold_count;
> > -		count = total_count;
> > -	} else {
> > -		start = 0;
> > -		count = cold_count;
> > -	}
> > -
> > -	for (i = start; i < count; i++) {
> > -		if (strcmp(name, extlist[i]))
> > -			continue;
> > -
> > -		if (set)
> > -			return -EINVAL;
> > -
> > -		memcpy(extlist[i], extlist[i + 1],
> > -				F2FS_EXTENSION_LEN * (total_count - i - 1));
> > -		memset(extlist[total_count - 1], 0, F2FS_EXTENSION_LEN);
> > -		if (hot)
> > -			sbi->raw_super->hot_ext_count = hot_count - 1;
> > -		else
> > -			sbi->raw_super->extension_count =
> > -						cpu_to_le32(cold_count - 1);
> > -		return 0;
> > -	}
> > -
> > -	if (!set)
> > -		return -EINVAL;
> > -
> > -	if (hot) {
> > -		memcpy(extlist[count], name, strlen(name));
> > -		sbi->raw_super->hot_ext_count = hot_count + 1;
> > -	} else {
> > -		char buf[F2FS_MAX_EXTENSION][F2FS_EXTENSION_LEN];
> > -
> > -		memcpy(buf, &extlist[cold_count],
> > -				F2FS_EXTENSION_LEN * hot_count);
> > -		memset(extlist[cold_count], 0, F2FS_EXTENSION_LEN);
> > -		memcpy(extlist[cold_count], name, strlen(name));
> > -		memcpy(&extlist[cold_count + 1], buf,
> > -				F2FS_EXTENSION_LEN * hot_count);
> > -		sbi->raw_super->extension_count = cpu_to_le32(cold_count + 1);
> > -	}
> > -	return 0;
> > -}
> > -
> > -static void set_compress_inode(struct f2fs_sb_info *sbi, struct inode *inode,
> > -						const unsigned char *name)
> > -{
> > -	__u8 (*extlist)[F2FS_EXTENSION_LEN] = sbi->raw_super->extension_list;
> > -	unsigned char (*noext)[F2FS_EXTENSION_LEN] = F2FS_OPTION(sbi).noextensions;
> > -	unsigned char (*ext)[F2FS_EXTENSION_LEN] = F2FS_OPTION(sbi).extensions;
> > -	unsigned char ext_cnt = F2FS_OPTION(sbi).compress_ext_cnt;
> > -	unsigned char noext_cnt = F2FS_OPTION(sbi).nocompress_ext_cnt;
> > -	int i, cold_count, hot_count;
> > -
> > -	if (!f2fs_sb_has_compression(sbi) ||
> > -			F2FS_I(inode)->i_flags & F2FS_NOCOMP_FL ||
> > -			!f2fs_may_compress(inode) ||
> > -			(!ext_cnt && !noext_cnt))
> > -		return;
> > -
> > -	f2fs_down_read(&sbi->sb_lock);
> > -
> > -	cold_count = le32_to_cpu(sbi->raw_super->extension_count);
> > -	hot_count = sbi->raw_super->hot_ext_count;
> > -
> > -	for (i = cold_count; i < cold_count + hot_count; i++) {
> > -		if (is_extension_exist(name, extlist[i], false)) {
> > -			f2fs_up_read(&sbi->sb_lock);
> > -			return;
> > -		}
> > -	}
> > -
> > -	f2fs_up_read(&sbi->sb_lock);
> > -
> > -	for (i = 0; i < noext_cnt; i++) {
> > -		if (is_extension_exist(name, noext[i], false)) {
> > -			f2fs_disable_compressed_file(inode);
> > -			return;
> > -		}
> > -	}
> > -
> > -	if (is_inode_flag_set(inode, FI_COMPRESSED_FILE))
> > -		return;
> > -
> > -	for (i = 0; i < ext_cnt; i++) {
> > -		if (!is_extension_exist(name, ext[i], false))
> > -			continue;
> > -
> > -		/* Do not use inline_data with compression */
> > -		stat_dec_inline_inode(inode);
> > -		clear_inode_flag(inode, FI_INLINE_DATA);
> > -		set_compress_context(inode);
> > -		return;
> > -	}
> > -}
> > -
> >   static int f2fs_create(struct user_namespace *mnt_userns, struct inode *dir,
> >   		       struct dentry *dentry, umode_t mode, bool excl)
> >   {
> > @@ -352,15 +349,13 @@ static int f2fs_create(struct user_namespace *mnt_userns, struct inode *dir,
> >   	if (err)
> >   		return err;
> > -	inode = f2fs_new_inode(mnt_userns, dir, mode);
> > +	inode = f2fs_new_inode(mnt_userns, dir, mode, dentry->d_name.name);
> >   	if (IS_ERR(inode))
> >   		return PTR_ERR(inode);
> >   	if (!test_opt(sbi, DISABLE_EXT_IDENTIFY))
> >   		set_file_temperature(sbi, inode, dentry->d_name.name);
> > -	set_compress_inode(sbi, inode, dentry->d_name.name);
> > -
> >   	inode->i_op = &f2fs_file_inode_operations;
> >   	inode->i_fop = &f2fs_file_operations;
> >   	inode->i_mapping->a_ops = &f2fs_dblock_aops;
> > @@ -689,7 +684,7 @@ static int f2fs_symlink(struct user_namespace *mnt_userns, struct inode *dir,
> >   	if (err)
> >   		return err;
> > -	inode = f2fs_new_inode(mnt_userns, dir, S_IFLNK | S_IRWXUGO);
> > +	inode = f2fs_new_inode(mnt_userns, dir, S_IFLNK | S_IRWXUGO, NULL);
> >   	if (IS_ERR(inode))
> >   		return PTR_ERR(inode);
> > @@ -760,7 +755,8 @@ static int f2fs_mkdir(struct user_namespace *mnt_userns, struct inode *dir,
> >   	if (err)
> >   		return err;
> > -	inode = f2fs_new_inode(mnt_userns, dir, S_IFDIR | mode);
> > +	inode = f2fs_new_inode(mnt_userns, dir, S_IFDIR | mode,
> > +						dentry->d_name.name);
> >   	if (IS_ERR(inode))
> >   		return PTR_ERR(inode);
> > @@ -817,7 +813,7 @@ static int f2fs_mknod(struct user_namespace *mnt_userns, struct inode *dir,
> >   	if (err)
> >   		return err;
> > -	inode = f2fs_new_inode(mnt_userns, dir, mode);
> > +	inode = f2fs_new_inode(mnt_userns, dir, mode, NULL);
> >   	if (IS_ERR(inode))
> >   		return PTR_ERR(inode);
> > @@ -856,7 +852,7 @@ static int __f2fs_tmpfile(struct user_namespace *mnt_userns, struct inode *dir,
> >   	if (err)
> >   		return err;
> > -	inode = f2fs_new_inode(mnt_userns, dir, mode);
> > +	inode = f2fs_new_inode(mnt_userns, dir, mode, NULL);
> >   	if (IS_ERR(inode))
> >   		return PTR_ERR(inode);
  

On 2022/11/17 9:12, Jaegeuk Kim wrote:
> If compress_extension is set, and a newly created file matches the
> extension, the file could be marked as compression file. However,
> if inline_data is also enabled, there is no chance to check its
> extension since f2fs_should_compress() always returns false.
> 
> This patch moves set_compress_inode(), which do extension check, in
> f2fs_should_compress() to check extensions before setting inline
> data flag.
> 
> Fixes: 7165841d578e ("f2fs: fix to check inline_data during compressed inode conversion")
> Signed-off-by: Sheng Yong <shengyong@oppo.com>
> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
> ---
>   fs/f2fs/f2fs.h  |   2 +-
>   fs/f2fs/namei.c | 325 +++++++++++++++++++++++-------------------------
>   2 files changed, 160 insertions(+), 167 deletions(-)
> 
> diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
> index b89b5d755ce0..dedac413bf64 100644
> --- a/fs/f2fs/f2fs.h
> +++ b/fs/f2fs/f2fs.h
> @@ -2980,7 +2980,7 @@ static inline void f2fs_change_bit(unsigned int nr, char *addr)
>   /* Flags that should be inherited by new inodes from their parent. */
>   #define F2FS_FL_INHERITED (F2FS_SYNC_FL | F2FS_NODUMP_FL | F2FS_NOATIME_FL | \
>   			   F2FS_DIRSYNC_FL | F2FS_PROJINHERIT_FL | \
> -			   F2FS_CASEFOLD_FL | F2FS_COMPR_FL | F2FS_NOCOMP_FL)
> +			   F2FS_CASEFOLD_FL)
>   
>   /* Flags that are appropriate for regular files (all but dir-specific ones). */
>   #define F2FS_REG_FLMASK		(~(F2FS_DIRSYNC_FL | F2FS_PROJINHERIT_FL | \
> diff --git a/fs/f2fs/namei.c b/fs/f2fs/namei.c
> index e104409c3a0e..c25009bb72f2 100644
> --- a/fs/f2fs/namei.c
> +++ b/fs/f2fs/namei.c
> @@ -22,8 +22,158 @@
>   #include "acl.h"
>   #include <trace/events/f2fs.h>
>   
> +static inline int is_extension_exist(const unsigned char *s, const char *sub,
> +						bool tmp_ext)
> +{
> +	size_t slen = strlen(s);
> +	size_t sublen = strlen(sub);
> +	int i;
> +
> +	if (sublen == 1 && *sub == '*')
> +		return 1;
> +
> +	/*
> +	 * filename format of multimedia file should be defined as:
> +	 * "filename + '.' + extension + (optional: '.' + temp extension)".
> +	 */
> +	if (slen < sublen + 2)
> +		return 0;
> +
> +	if (!tmp_ext) {
> +		/* file has no temp extension */
> +		if (s[slen - sublen - 1] != '.')
> +			return 0;
> +		return !strncasecmp(s + slen - sublen, sub, sublen);
> +	}
> +
> +	for (i = 1; i < slen - sublen; i++) {
> +		if (s[i] != '.')
> +			continue;
> +		if (!strncasecmp(s + i + 1, sub, sublen))
> +			return 1;
> +	}
> +
> +	return 0;
> +}
> +
> +int f2fs_update_extension_list(struct f2fs_sb_info *sbi, const char *name,
> +							bool hot, bool set)
> +{
> +	__u8 (*extlist)[F2FS_EXTENSION_LEN] = sbi->raw_super->extension_list;
> +	int cold_count = le32_to_cpu(sbi->raw_super->extension_count);
> +	int hot_count = sbi->raw_super->hot_ext_count;
> +	int total_count = cold_count + hot_count;
> +	int start, count;
> +	int i;
> +
> +	if (set) {
> +		if (total_count == F2FS_MAX_EXTENSION)
> +			return -EINVAL;
> +	} else {
> +		if (!hot && !cold_count)
> +			return -EINVAL;
> +		if (hot && !hot_count)
> +			return -EINVAL;
> +	}
> +
> +	if (hot) {
> +		start = cold_count;
> +		count = total_count;
> +	} else {
> +		start = 0;
> +		count = cold_count;
> +	}
> +
> +	for (i = start; i < count; i++) {
> +		if (strcmp(name, extlist[i]))
> +			continue;
> +
> +		if (set)
> +			return -EINVAL;
> +
> +		memcpy(extlist[i], extlist[i + 1],
> +				F2FS_EXTENSION_LEN * (total_count - i - 1));
> +		memset(extlist[total_count - 1], 0, F2FS_EXTENSION_LEN);
> +		if (hot)
> +			sbi->raw_super->hot_ext_count = hot_count - 1;
> +		else
> +			sbi->raw_super->extension_count =
> +						cpu_to_le32(cold_count - 1);
> +		return 0;
> +	}
> +
> +	if (!set)
> +		return -EINVAL;
> +
> +	if (hot) {
> +		memcpy(extlist[count], name, strlen(name));
> +		sbi->raw_super->hot_ext_count = hot_count + 1;
> +	} else {
> +		char buf[F2FS_MAX_EXTENSION][F2FS_EXTENSION_LEN];
> +
> +		memcpy(buf, &extlist[cold_count],
> +				F2FS_EXTENSION_LEN * hot_count);
> +		memset(extlist[cold_count], 0, F2FS_EXTENSION_LEN);
> +		memcpy(extlist[cold_count], name, strlen(name));
> +		memcpy(&extlist[cold_count + 1], buf,
> +				F2FS_EXTENSION_LEN * hot_count);
> +		sbi->raw_super->extension_count = cpu_to_le32(cold_count + 1);
> +	}
> +	return 0;
> +}
> +
> +static void set_compress_new_inode(struct f2fs_sb_info *sbi, struct inode *dir,
> +				struct inode *inode, const unsigned char *name)
> +{
> +	__u8 (*extlist)[F2FS_EXTENSION_LEN] = sbi->raw_super->extension_list;
> +	unsigned char (*noext)[F2FS_EXTENSION_LEN] =
> +						F2FS_OPTION(sbi).noextensions;
> +	unsigned char (*ext)[F2FS_EXTENSION_LEN] = F2FS_OPTION(sbi).extensions;
> +	unsigned char ext_cnt = F2FS_OPTION(sbi).compress_ext_cnt;
> +	unsigned char noext_cnt = F2FS_OPTION(sbi).nocompress_ext_cnt;
> +	int i, cold_count, hot_count;
> +
> +	/* Caller should give the name of regular file or directory. */
> +	if (!f2fs_sb_has_compression(sbi) || !name)
> +		return;
> +
> +	if (S_ISDIR(inode->i_mode))
> +		goto inherit_comp;

Documentation/filesystems/f2fs.rst

- Priority in between FS_COMPR_FL, FS_NOCOMP_FS, extensions:

   * compress_extension=so; nocompress_extension=zip; chattr +c dir; touch
     dir/foo.so; touch dir/bar.zip; touch dir/baz.txt; then foo.so and baz.txt
     should be compresse, bar.zip should be non-compressed. chattr +c dir/bar.zip
     can enable compress on bar.zip.

It looks nocompress_extension has higher priority than flag inheriting?

> +
> +	/* Don't compress hot files. */
> +	f2fs_down_read(&sbi->sb_lock);
> +	cold_count = le32_to_cpu(sbi->raw_super->extension_count);
> +	hot_count = sbi->raw_super->hot_ext_count;
> +	for (i = cold_count; i < cold_count + hot_count; i++)
> +		if (is_extension_exist(name, extlist[i], false))
> +			break;
> +	f2fs_up_read(&sbi->sb_lock);
> +	if (i < (cold_count + hot_count))
> +		return;
> +
> +	/* Don't compress unallowed extension. */
> +	for (i = 0; i < noext_cnt; i++)
> +		if (is_extension_exist(name, noext[i], false))
> +			return;
> +
> +	/* Compress wanting extension. */
> +	for (i = 0; i < ext_cnt; i++) {
> +		if (is_extension_exist(name, ext[i], false)) {
> +			set_compress_context(inode);
> +			return;
> +		}
> +	}
> +inherit_comp:
> +	/* Inherit the {no-}compression flag in directory */
> +	if (F2FS_I(dir)->i_flags & F2FS_NOCOMP_FL)
> +		F2FS_I(inode)->i_flags |= F2FS_NOCOMP_FL;

f2fs_mark_inode_dirty_sync(, true)?

> +	else if (F2FS_I(dir)->i_flags & F2FS_COMPR_FL)
> +		set_compress_context(inode);
> +}
> +
>   static struct inode *f2fs_new_inode(struct user_namespace *mnt_userns,
> -						struct inode *dir, umode_t mode)
> +						struct inode *dir, umode_t mode,
> +						const char *name)
>   {
>   	struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
>   	nid_t ino;
> @@ -114,12 +264,8 @@ static struct inode *f2fs_new_inode(struct user_namespace *mnt_userns,
>   	if (F2FS_I(inode)->i_flags & F2FS_PROJINHERIT_FL)
>   		set_inode_flag(inode, FI_PROJ_INHERIT);
>   
> -	if (f2fs_sb_has_compression(sbi)) {
> -		/* Inherit the compression flag in directory */
> -		if ((F2FS_I(dir)->i_flags & F2FS_COMPR_FL) &&
> -					f2fs_may_compress(inode))
> -			set_compress_context(inode);
> -	}
> +	/* Check compression first. */
> +	set_compress_new_inode(sbi, dir, inode, name);
>   
>   	/* Should enable inline_data after compression set */
>   	if (test_opt(sbi, INLINE_DATA) && f2fs_may_inline_data(inode))
> @@ -153,40 +299,6 @@ static struct inode *f2fs_new_inode(struct user_namespace *mnt_userns,
>   	return ERR_PTR(err);
>   }
>   
> -static inline int is_extension_exist(const unsigned char *s, const char *sub,
> -						bool tmp_ext)
> -{
> -	size_t slen = strlen(s);
> -	size_t sublen = strlen(sub);
> -	int i;
> -
> -	if (sublen == 1 && *sub == '*')
> -		return 1;
> -
> -	/*
> -	 * filename format of multimedia file should be defined as:
> -	 * "filename + '.' + extension + (optional: '.' + temp extension)".
> -	 */
> -	if (slen < sublen + 2)
> -		return 0;
> -
> -	if (!tmp_ext) {
> -		/* file has no temp extension */
> -		if (s[slen - sublen - 1] != '.')
> -			return 0;
> -		return !strncasecmp(s + slen - sublen, sub, sublen);
> -	}
> -
> -	for (i = 1; i < slen - sublen; i++) {
> -		if (s[i] != '.')
> -			continue;
> -		if (!strncasecmp(s + i + 1, sub, sublen))
> -			return 1;
> -	}
> -
> -	return 0;
> -}
> -
>   /*
>    * Set file's temperature for hot/cold data separation
>    */
> @@ -217,124 +329,6 @@ static inline void set_file_temperature(struct f2fs_sb_info *sbi, struct inode *
>   		file_set_hot(inode);
>   }
>   
> -int f2fs_update_extension_list(struct f2fs_sb_info *sbi, const char *name,
> -							bool hot, bool set)
> -{
> -	__u8 (*extlist)[F2FS_EXTENSION_LEN] = sbi->raw_super->extension_list;
> -	int cold_count = le32_to_cpu(sbi->raw_super->extension_count);
> -	int hot_count = sbi->raw_super->hot_ext_count;
> -	int total_count = cold_count + hot_count;
> -	int start, count;
> -	int i;
> -
> -	if (set) {
> -		if (total_count == F2FS_MAX_EXTENSION)
> -			return -EINVAL;
> -	} else {
> -		if (!hot && !cold_count)
> -			return -EINVAL;
> -		if (hot && !hot_count)
> -			return -EINVAL;
> -	}
> -
> -	if (hot) {
> -		start = cold_count;
> -		count = total_count;
> -	} else {
> -		start = 0;
> -		count = cold_count;
> -	}
> -
> -	for (i = start; i < count; i++) {
> -		if (strcmp(name, extlist[i]))
> -			continue;
> -
> -		if (set)
> -			return -EINVAL;
> -
> -		memcpy(extlist[i], extlist[i + 1],
> -				F2FS_EXTENSION_LEN * (total_count - i - 1));
> -		memset(extlist[total_count - 1], 0, F2FS_EXTENSION_LEN);
> -		if (hot)
> -			sbi->raw_super->hot_ext_count = hot_count - 1;
> -		else
> -			sbi->raw_super->extension_count =
> -						cpu_to_le32(cold_count - 1);
> -		return 0;
> -	}
> -
> -	if (!set)
> -		return -EINVAL;
> -
> -	if (hot) {
> -		memcpy(extlist[count], name, strlen(name));
> -		sbi->raw_super->hot_ext_count = hot_count + 1;
> -	} else {
> -		char buf[F2FS_MAX_EXTENSION][F2FS_EXTENSION_LEN];
> -
> -		memcpy(buf, &extlist[cold_count],
> -				F2FS_EXTENSION_LEN * hot_count);
> -		memset(extlist[cold_count], 0, F2FS_EXTENSION_LEN);
> -		memcpy(extlist[cold_count], name, strlen(name));
> -		memcpy(&extlist[cold_count + 1], buf,
> -				F2FS_EXTENSION_LEN * hot_count);
> -		sbi->raw_super->extension_count = cpu_to_le32(cold_count + 1);
> -	}
> -	return 0;
> -}
> -
> -static void set_compress_inode(struct f2fs_sb_info *sbi, struct inode *inode,
> -						const unsigned char *name)
> -{
> -	__u8 (*extlist)[F2FS_EXTENSION_LEN] = sbi->raw_super->extension_list;
> -	unsigned char (*noext)[F2FS_EXTENSION_LEN] = F2FS_OPTION(sbi).noextensions;
> -	unsigned char (*ext)[F2FS_EXTENSION_LEN] = F2FS_OPTION(sbi).extensions;
> -	unsigned char ext_cnt = F2FS_OPTION(sbi).compress_ext_cnt;
> -	unsigned char noext_cnt = F2FS_OPTION(sbi).nocompress_ext_cnt;
> -	int i, cold_count, hot_count;
> -
> -	if (!f2fs_sb_has_compression(sbi) ||
> -			F2FS_I(inode)->i_flags & F2FS_NOCOMP_FL ||
> -			!f2fs_may_compress(inode) ||
> -			(!ext_cnt && !noext_cnt))
> -		return;
> -
> -	f2fs_down_read(&sbi->sb_lock);
> -
> -	cold_count = le32_to_cpu(sbi->raw_super->extension_count);
> -	hot_count = sbi->raw_super->hot_ext_count;
> -
> -	for (i = cold_count; i < cold_count + hot_count; i++) {
> -		if (is_extension_exist(name, extlist[i], false)) {
> -			f2fs_up_read(&sbi->sb_lock);
> -			return;
> -		}
> -	}
> -
> -	f2fs_up_read(&sbi->sb_lock);
> -
> -	for (i = 0; i < noext_cnt; i++) {
> -		if (is_extension_exist(name, noext[i], false)) {
> -			f2fs_disable_compressed_file(inode);
> -			return;
> -		}
> -	}
> -
> -	if (is_inode_flag_set(inode, FI_COMPRESSED_FILE))
> -		return;
> -
> -	for (i = 0; i < ext_cnt; i++) {
> -		if (!is_extension_exist(name, ext[i], false))
> -			continue;
> -
> -		/* Do not use inline_data with compression */
> -		stat_dec_inline_inode(inode);
> -		clear_inode_flag(inode, FI_INLINE_DATA);
> -		set_compress_context(inode);
> -		return;
> -	}
> -}
> -
>   static int f2fs_create(struct user_namespace *mnt_userns, struct inode *dir,
>   		       struct dentry *dentry, umode_t mode, bool excl)
>   {
> @@ -352,15 +346,13 @@ static int f2fs_create(struct user_namespace *mnt_userns, struct inode *dir,
>   	if (err)
>   		return err;
>   
> -	inode = f2fs_new_inode(mnt_userns, dir, mode);
> +	inode = f2fs_new_inode(mnt_userns, dir, mode, dentry->d_name.name);
>   	if (IS_ERR(inode))
>   		return PTR_ERR(inode);
>   
>   	if (!test_opt(sbi, DISABLE_EXT_IDENTIFY))
>   		set_file_temperature(sbi, inode, dentry->d_name.name);
>   
> -	set_compress_inode(sbi, inode, dentry->d_name.name);
> -
>   	inode->i_op = &f2fs_file_inode_operations;
>   	inode->i_fop = &f2fs_file_operations;
>   	inode->i_mapping->a_ops = &f2fs_dblock_aops;
> @@ -689,7 +681,7 @@ static int f2fs_symlink(struct user_namespace *mnt_userns, struct inode *dir,
>   	if (err)
>   		return err;
>   
> -	inode = f2fs_new_inode(mnt_userns, dir, S_IFLNK | S_IRWXUGO);
> +	inode = f2fs_new_inode(mnt_userns, dir, S_IFLNK | S_IRWXUGO, NULL);
>   	if (IS_ERR(inode))
>   		return PTR_ERR(inode);
>   
> @@ -760,7 +752,8 @@ static int f2fs_mkdir(struct user_namespace *mnt_userns, struct inode *dir,
>   	if (err)
>   		return err;
>   
> -	inode = f2fs_new_inode(mnt_userns, dir, S_IFDIR | mode);
> +	inode = f2fs_new_inode(mnt_userns, dir, S_IFDIR | mode,
> +						dentry->d_name.name);

Why we need to pass directory's name to set_compress_new_inode()?

Could we just check S_IFDIR in child inode?

Thanks,

>   	if (IS_ERR(inode))
>   		return PTR_ERR(inode);
>   
> @@ -817,7 +810,7 @@ static int f2fs_mknod(struct user_namespace *mnt_userns, struct inode *dir,
>   	if (err)
>   		return err;
>   
> -	inode = f2fs_new_inode(mnt_userns, dir, mode);
> +	inode = f2fs_new_inode(mnt_userns, dir, mode, NULL);
>   	if (IS_ERR(inode))
>   		return PTR_ERR(inode);
>   
> @@ -856,7 +849,7 @@ static int __f2fs_tmpfile(struct user_namespace *mnt_userns, struct inode *dir,
>   	if (err)
>   		return err;
>   
> -	inode = f2fs_new_inode(mnt_userns, dir, mode);
> +	inode = f2fs_new_inode(mnt_userns, dir, mode, NULL);
>   	if (IS_ERR(inode))
>   		return PTR_ERR(inode);
>
  

On 2022/11/23 22:54, Chao Yu wrote:
> On 2022/11/17 9:12, Jaegeuk Kim wrote:
>> If compress_extension is set, and a newly created file matches the
>> extension, the file could be marked as compression file. However,
>> if inline_data is also enabled, there is no chance to check its
>> extension since f2fs_should_compress() always returns false.
>>
>> This patch moves set_compress_inode(), which do extension check, in
>> f2fs_should_compress() to check extensions before setting inline
>> data flag.
>>
>> Fixes: 7165841d578e ("f2fs: fix to check inline_data during compressed inode conversion")
>> Signed-off-by: Sheng Yong <shengyong@oppo.com>
>> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
>> ---
>>   fs/f2fs/f2fs.h  |   2 +-
>>   fs/f2fs/namei.c | 325 +++++++++++++++++++++++-------------------------
>>   2 files changed, 160 insertions(+), 167 deletions(-)
>>
>> diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
>> index b89b5d755ce0..dedac413bf64 100644
>> --- a/fs/f2fs/f2fs.h
>> +++ b/fs/f2fs/f2fs.h
>> @@ -2980,7 +2980,7 @@ static inline void f2fs_change_bit(unsigned int nr, char *addr)
>>   /* Flags that should be inherited by new inodes from their parent. */
>>   #define F2FS_FL_INHERITED (F2FS_SYNC_FL | F2FS_NODUMP_FL | F2FS_NOATIME_FL | \
>>                  F2FS_DIRSYNC_FL | F2FS_PROJINHERIT_FL | \
>> -               F2FS_CASEFOLD_FL | F2FS_COMPR_FL | F2FS_NOCOMP_FL)
>> +               F2FS_CASEFOLD_FL)
>>   /* Flags that are appropriate for regular files (all but dir-specific ones). */
>>   #define F2FS_REG_FLMASK        (~(F2FS_DIRSYNC_FL | F2FS_PROJINHERIT_FL | \
>> diff --git a/fs/f2fs/namei.c b/fs/f2fs/namei.c
>> index e104409c3a0e..c25009bb72f2 100644
>> --- a/fs/f2fs/namei.c
>> +++ b/fs/f2fs/namei.c
>> @@ -22,8 +22,158 @@
>>   #include "acl.h"
>>   #include <trace/events/f2fs.h>
>> +static inline int is_extension_exist(const unsigned char *s, const char *sub,
>> +                        bool tmp_ext)
>> +{
>> +    size_t slen = strlen(s);
>> +    size_t sublen = strlen(sub);
>> +    int i;
>> +
>> +    if (sublen == 1 && *sub == '*')
>> +        return 1;
>> +
>> +    /*
>> +     * filename format of multimedia file should be defined as:
>> +     * "filename + '.' + extension + (optional: '.' + temp extension)".
>> +     */
>> +    if (slen < sublen + 2)
>> +        return 0;
>> +
>> +    if (!tmp_ext) {
>> +        /* file has no temp extension */
>> +        if (s[slen - sublen - 1] != '.')
>> +            return 0;
>> +        return !strncasecmp(s + slen - sublen, sub, sublen);
>> +    }
>> +
>> +    for (i = 1; i < slen - sublen; i++) {
>> +        if (s[i] != '.')
>> +            continue;
>> +        if (!strncasecmp(s + i + 1, sub, sublen))
>> +            return 1;
>> +    }
>> +
>> +    return 0;
>> +}
>> +
>> +int f2fs_update_extension_list(struct f2fs_sb_info *sbi, const char *name,
>> +                            bool hot, bool set)
>> +{
>> +    __u8 (*extlist)[F2FS_EXTENSION_LEN] = sbi->raw_super->extension_list;
>> +    int cold_count = le32_to_cpu(sbi->raw_super->extension_count);
>> +    int hot_count = sbi->raw_super->hot_ext_count;
>> +    int total_count = cold_count + hot_count;
>> +    int start, count;
>> +    int i;
>> +
>> +    if (set) {
>> +        if (total_count == F2FS_MAX_EXTENSION)
>> +            return -EINVAL;
>> +    } else {
>> +        if (!hot && !cold_count)
>> +            return -EINVAL;
>> +        if (hot && !hot_count)
>> +            return -EINVAL;
>> +    }
>> +
>> +    if (hot) {
>> +        start = cold_count;
>> +        count = total_count;
>> +    } else {
>> +        start = 0;
>> +        count = cold_count;
>> +    }
>> +
>> +    for (i = start; i < count; i++) {
>> +        if (strcmp(name, extlist[i]))
>> +            continue;
>> +
>> +        if (set)
>> +            return -EINVAL;
>> +
>> +        memcpy(extlist[i], extlist[i + 1],
>> +                F2FS_EXTENSION_LEN * (total_count - i - 1));
>> +        memset(extlist[total_count - 1], 0, F2FS_EXTENSION_LEN);
>> +        if (hot)
>> +            sbi->raw_super->hot_ext_count = hot_count - 1;
>> +        else
>> +            sbi->raw_super->extension_count =
>> +                        cpu_to_le32(cold_count - 1);
>> +        return 0;
>> +    }
>> +
>> +    if (!set)
>> +        return -EINVAL;
>> +
>> +    if (hot) {
>> +        memcpy(extlist[count], name, strlen(name));
>> +        sbi->raw_super->hot_ext_count = hot_count + 1;
>> +    } else {
>> +        char buf[F2FS_MAX_EXTENSION][F2FS_EXTENSION_LEN];
>> +
>> +        memcpy(buf, &extlist[cold_count],
>> +                F2FS_EXTENSION_LEN * hot_count);
>> +        memset(extlist[cold_count], 0, F2FS_EXTENSION_LEN);
>> +        memcpy(extlist[cold_count], name, strlen(name));
>> +        memcpy(&extlist[cold_count + 1], buf,
>> +                F2FS_EXTENSION_LEN * hot_count);
>> +        sbi->raw_super->extension_count = cpu_to_le32(cold_count + 1);
>> +    }
>> +    return 0;
>> +}
>> +
>> +static void set_compress_new_inode(struct f2fs_sb_info *sbi, struct inode *dir,
>> +                struct inode *inode, const unsigned char *name)
>> +{
>> +    __u8 (*extlist)[F2FS_EXTENSION_LEN] = sbi->raw_super->extension_list;
>> +    unsigned char (*noext)[F2FS_EXTENSION_LEN] =
>> +                        F2FS_OPTION(sbi).noextensions;
>> +    unsigned char (*ext)[F2FS_EXTENSION_LEN] = F2FS_OPTION(sbi).extensions;
>> +    unsigned char ext_cnt = F2FS_OPTION(sbi).compress_ext_cnt;
>> +    unsigned char noext_cnt = F2FS_OPTION(sbi).nocompress_ext_cnt;
>> +    int i, cold_count, hot_count;
>> +
>> +    /* Caller should give the name of regular file or directory. */
>> +    if (!f2fs_sb_has_compression(sbi) || !name)
>> +        return;
>> +
>> +    if (S_ISDIR(inode->i_mode))
>> +        goto inherit_comp;
> 
> Documentation/filesystems/f2fs.rst
> 
> - Priority in between FS_COMPR_FL, FS_NOCOMP_FS, extensions:
> 
>    * compress_extension=so; nocompress_extension=zip; chattr +c dir; touch
>      dir/foo.so; touch dir/bar.zip; touch dir/baz.txt; then foo.so and baz.txt
>      should be compresse, bar.zip should be non-compressed. chattr +c dir/bar.zip
>      can enable compress on bar.zip.
> 
> It looks nocompress_extension has higher priority than flag inheriting?

Hi, Chao,

Yes, nocompress_extension has higher priority for regular files. The following code
checks ext[] and noext[] before setting compression flag. While for directories, we
skip checking ext and noext. So the above `if (S_ISDIR(inode)) goto inherit_comp`
does not break the rule.

thanks,
shengyong
> 
>> +
>> +    /* Don't compress hot files. */
>> +    f2fs_down_read(&sbi->sb_lock);
>> +    cold_count = le32_to_cpu(sbi->raw_super->extension_count);
>> +    hot_count = sbi->raw_super->hot_ext_count;
>> +    for (i = cold_count; i < cold_count + hot_count; i++)
>> +        if (is_extension_exist(name, extlist[i], false))
>> +            break;
>> +    f2fs_up_read(&sbi->sb_lock);
>> +    if (i < (cold_count + hot_count))
>> +        return;
>> +
>> +    /* Don't compress unallowed extension. */
>> +    for (i = 0; i < noext_cnt; i++)
>> +        if (is_extension_exist(name, noext[i], false))
>> +            return;
>> +
>> +    /* Compress wanting extension. */
>> +    for (i = 0; i < ext_cnt; i++) {
>> +        if (is_extension_exist(name, ext[i], false)) {
>> +            set_compress_context(inode);
>> +            return;
>> +        }
>> +    }
>> +inherit_comp:
>> +    /* Inherit the {no-}compression flag in directory */
>> +    if (F2FS_I(dir)->i_flags & F2FS_NOCOMP_FL)
>> +        F2FS_I(inode)->i_flags |= F2FS_NOCOMP_FL;
> 
> f2fs_mark_inode_dirty_sync(, true)?
> 
>> +    else if (F2FS_I(dir)->i_flags & F2FS_COMPR_FL)
>> +        set_compress_context(inode);
>> +}
>> +
>>   static struct inode *f2fs_new_inode(struct user_namespace *mnt_userns,
>> -                        struct inode *dir, umode_t mode)
>> +                        struct inode *dir, umode_t mode,
>> +                        const char *name)
>>   {
>>       struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
>>       nid_t ino;
>> @@ -114,12 +264,8 @@ static struct inode *f2fs_new_inode(struct user_namespace *mnt_userns,
>>       if (F2FS_I(inode)->i_flags & F2FS_PROJINHERIT_FL)
>>           set_inode_flag(inode, FI_PROJ_INHERIT);
>> -    if (f2fs_sb_has_compression(sbi)) {
>> -        /* Inherit the compression flag in directory */
>> -        if ((F2FS_I(dir)->i_flags & F2FS_COMPR_FL) &&
>> -                    f2fs_may_compress(inode))
>> -            set_compress_context(inode);
>> -    }
>> +    /* Check compression first. */
>> +    set_compress_new_inode(sbi, dir, inode, name);
>>       /* Should enable inline_data after compression set */
>>       if (test_opt(sbi, INLINE_DATA) && f2fs_may_inline_data(inode))
>> @@ -153,40 +299,6 @@ static struct inode *f2fs_new_inode(struct user_namespace *mnt_userns,
>>       return ERR_PTR(err);
>>   }
>> -static inline int is_extension_exist(const unsigned char *s, const char *sub,
>> -                        bool tmp_ext)
>> -{
>> -    size_t slen = strlen(s);
>> -    size_t sublen = strlen(sub);
>> -    int i;
>> -
>> -    if (sublen == 1 && *sub == '*')
>> -        return 1;
>> -
>> -    /*
>> -     * filename format of multimedia file should be defined as:
>> -     * "filename + '.' + extension + (optional: '.' + temp extension)".
>> -     */
>> -    if (slen < sublen + 2)
>> -        return 0;
>> -
>> -    if (!tmp_ext) {
>> -        /* file has no temp extension */
>> -        if (s[slen - sublen - 1] != '.')
>> -            return 0;
>> -        return !strncasecmp(s + slen - sublen, sub, sublen);
>> -    }
>> -
>> -    for (i = 1; i < slen - sublen; i++) {
>> -        if (s[i] != '.')
>> -            continue;
>> -        if (!strncasecmp(s + i + 1, sub, sublen))
>> -            return 1;
>> -    }
>> -
>> -    return 0;
>> -}
>> -
>>   /*
>>    * Set file's temperature for hot/cold data separation
>>    */
>> @@ -217,124 +329,6 @@ static inline void set_file_temperature(struct f2fs_sb_info *sbi, struct inode *
>>           file_set_hot(inode);
>>   }
>> -int f2fs_update_extension_list(struct f2fs_sb_info *sbi, const char *name,
>> -                            bool hot, bool set)
>> -{
>> -    __u8 (*extlist)[F2FS_EXTENSION_LEN] = sbi->raw_super->extension_list;
>> -    int cold_count = le32_to_cpu(sbi->raw_super->extension_count);
>> -    int hot_count = sbi->raw_super->hot_ext_count;
>> -    int total_count = cold_count + hot_count;
>> -    int start, count;
>> -    int i;
>> -
>> -    if (set) {
>> -        if (total_count == F2FS_MAX_EXTENSION)
>> -            return -EINVAL;
>> -    } else {
>> -        if (!hot && !cold_count)
>> -            return -EINVAL;
>> -        if (hot && !hot_count)
>> -            return -EINVAL;
>> -    }
>> -
>> -    if (hot) {
>> -        start = cold_count;
>> -        count = total_count;
>> -    } else {
>> -        start = 0;
>> -        count = cold_count;
>> -    }
>> -
>> -    for (i = start; i < count; i++) {
>> -        if (strcmp(name, extlist[i]))
>> -            continue;
>> -
>> -        if (set)
>> -            return -EINVAL;
>> -
>> -        memcpy(extlist[i], extlist[i + 1],
>> -                F2FS_EXTENSION_LEN * (total_count - i - 1));
>> -        memset(extlist[total_count - 1], 0, F2FS_EXTENSION_LEN);
>> -        if (hot)
>> -            sbi->raw_super->hot_ext_count = hot_count - 1;
>> -        else
>> -            sbi->raw_super->extension_count =
>> -                        cpu_to_le32(cold_count - 1);
>> -        return 0;
>> -    }
>> -
>> -    if (!set)
>> -        return -EINVAL;
>> -
>> -    if (hot) {
>> -        memcpy(extlist[count], name, strlen(name));
>> -        sbi->raw_super->hot_ext_count = hot_count + 1;
>> -    } else {
>> -        char buf[F2FS_MAX_EXTENSION][F2FS_EXTENSION_LEN];
>> -
>> -        memcpy(buf, &extlist[cold_count],
>> -                F2FS_EXTENSION_LEN * hot_count);
>> -        memset(extlist[cold_count], 0, F2FS_EXTENSION_LEN);
>> -        memcpy(extlist[cold_count], name, strlen(name));
>> -        memcpy(&extlist[cold_count + 1], buf,
>> -                F2FS_EXTENSION_LEN * hot_count);
>> -        sbi->raw_super->extension_count = cpu_to_le32(cold_count + 1);
>> -    }
>> -    return 0;
>> -}
>> -
>> -static void set_compress_inode(struct f2fs_sb_info *sbi, struct inode *inode,
>> -                        const unsigned char *name)
>> -{
>> -    __u8 (*extlist)[F2FS_EXTENSION_LEN] = sbi->raw_super->extension_list;
>> -    unsigned char (*noext)[F2FS_EXTENSION_LEN] = F2FS_OPTION(sbi).noextensions;
>> -    unsigned char (*ext)[F2FS_EXTENSION_LEN] = F2FS_OPTION(sbi).extensions;
>> -    unsigned char ext_cnt = F2FS_OPTION(sbi).compress_ext_cnt;
>> -    unsigned char noext_cnt = F2FS_OPTION(sbi).nocompress_ext_cnt;
>> -    int i, cold_count, hot_count;
>> -
>> -    if (!f2fs_sb_has_compression(sbi) ||
>> -            F2FS_I(inode)->i_flags & F2FS_NOCOMP_FL ||
>> -            !f2fs_may_compress(inode) ||
>> -            (!ext_cnt && !noext_cnt))
>> -        return;
>> -
>> -    f2fs_down_read(&sbi->sb_lock);
>> -
>> -    cold_count = le32_to_cpu(sbi->raw_super->extension_count);
>> -    hot_count = sbi->raw_super->hot_ext_count;
>> -
>> -    for (i = cold_count; i < cold_count + hot_count; i++) {
>> -        if (is_extension_exist(name, extlist[i], false)) {
>> -            f2fs_up_read(&sbi->sb_lock);
>> -            return;
>> -        }
>> -    }
>> -
>> -    f2fs_up_read(&sbi->sb_lock);
>> -
>> -    for (i = 0; i < noext_cnt; i++) {
>> -        if (is_extension_exist(name, noext[i], false)) {
>> -            f2fs_disable_compressed_file(inode);
>> -            return;
>> -        }
>> -    }
>> -
>> -    if (is_inode_flag_set(inode, FI_COMPRESSED_FILE))
>> -        return;
>> -
>> -    for (i = 0; i < ext_cnt; i++) {
>> -        if (!is_extension_exist(name, ext[i], false))
>> -            continue;
>> -
>> -        /* Do not use inline_data with compression */
>> -        stat_dec_inline_inode(inode);
>> -        clear_inode_flag(inode, FI_INLINE_DATA);
>> -        set_compress_context(inode);
>> -        return;
>> -    }
>> -}
>> -
>>   static int f2fs_create(struct user_namespace *mnt_userns, struct inode *dir,
>>                  struct dentry *dentry, umode_t mode, bool excl)
>>   {
>> @@ -352,15 +346,13 @@ static int f2fs_create(struct user_namespace *mnt_userns, struct inode *dir,
>>       if (err)
>>           return err;
>> -    inode = f2fs_new_inode(mnt_userns, dir, mode);
>> +    inode = f2fs_new_inode(mnt_userns, dir, mode, dentry->d_name.name);
>>       if (IS_ERR(inode))
>>           return PTR_ERR(inode);
>>       if (!test_opt(sbi, DISABLE_EXT_IDENTIFY))
>>           set_file_temperature(sbi, inode, dentry->d_name.name);
>> -    set_compress_inode(sbi, inode, dentry->d_name.name);
>> -
>>       inode->i_op = &f2fs_file_inode_operations;
>>       inode->i_fop = &f2fs_file_operations;
>>       inode->i_mapping->a_ops = &f2fs_dblock_aops;
>> @@ -689,7 +681,7 @@ static int f2fs_symlink(struct user_namespace *mnt_userns, struct inode *dir,
>>       if (err)
>>           return err;
>> -    inode = f2fs_new_inode(mnt_userns, dir, S_IFLNK | S_IRWXUGO);
>> +    inode = f2fs_new_inode(mnt_userns, dir, S_IFLNK | S_IRWXUGO, NULL);
>>       if (IS_ERR(inode))
>>           return PTR_ERR(inode);
>> @@ -760,7 +752,8 @@ static int f2fs_mkdir(struct user_namespace *mnt_userns, struct inode *dir,
>>       if (err)
>>           return err;
>> -    inode = f2fs_new_inode(mnt_userns, dir, S_IFDIR | mode);
>> +    inode = f2fs_new_inode(mnt_userns, dir, S_IFDIR | mode,
>> +                        dentry->d_name.name);
> 
> Why we need to pass directory's name to set_compress_new_inode()?
> 
> Could we just check S_IFDIR in child inode?
> 
> Thanks,
> 
>>       if (IS_ERR(inode))
>>           return PTR_ERR(inode);
>> @@ -817,7 +810,7 @@ static int f2fs_mknod(struct user_namespace *mnt_userns, struct inode *dir,
>>       if (err)
>>           return err;
>> -    inode = f2fs_new_inode(mnt_userns, dir, mode);
>> +    inode = f2fs_new_inode(mnt_userns, dir, mode, NULL);
>>       if (IS_ERR(inode))
>>           return PTR_ERR(inode);
>> @@ -856,7 +849,7 @@ static int __f2fs_tmpfile(struct user_namespace *mnt_userns, struct inode *dir,
>>       if (err)
>>           return err;
>> -    inode = f2fs_new_inode(mnt_userns, dir, mode);
>> +    inode = f2fs_new_inode(mnt_userns, dir, mode, NULL);
>>       if (IS_ERR(inode))
>>           return PTR_ERR(inode);
  

On 11/23, Chao Yu wrote:
> On 2022/11/17 9:12, Jaegeuk Kim wrote:
> > If compress_extension is set, and a newly created file matches the
> > extension, the file could be marked as compression file. However,
> > if inline_data is also enabled, there is no chance to check its
> > extension since f2fs_should_compress() always returns false.
> > 
> > This patch moves set_compress_inode(), which do extension check, in
> > f2fs_should_compress() to check extensions before setting inline
> > data flag.
> > 
> > Fixes: 7165841d578e ("f2fs: fix to check inline_data during compressed inode conversion")
> > Signed-off-by: Sheng Yong <shengyong@oppo.com>
> > Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
> > ---
> >   fs/f2fs/f2fs.h  |   2 +-
> >   fs/f2fs/namei.c | 325 +++++++++++++++++++++++-------------------------
> >   2 files changed, 160 insertions(+), 167 deletions(-)
> > 
> > diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
> > index b89b5d755ce0..dedac413bf64 100644
> > --- a/fs/f2fs/f2fs.h
> > +++ b/fs/f2fs/f2fs.h
> > @@ -2980,7 +2980,7 @@ static inline void f2fs_change_bit(unsigned int nr, char *addr)
> >   /* Flags that should be inherited by new inodes from their parent. */
> >   #define F2FS_FL_INHERITED (F2FS_SYNC_FL | F2FS_NODUMP_FL | F2FS_NOATIME_FL | \
> >   			   F2FS_DIRSYNC_FL | F2FS_PROJINHERIT_FL | \
> > -			   F2FS_CASEFOLD_FL | F2FS_COMPR_FL | F2FS_NOCOMP_FL)
> > +			   F2FS_CASEFOLD_FL)
> >   /* Flags that are appropriate for regular files (all but dir-specific ones). */
> >   #define F2FS_REG_FLMASK		(~(F2FS_DIRSYNC_FL | F2FS_PROJINHERIT_FL | \
> > diff --git a/fs/f2fs/namei.c b/fs/f2fs/namei.c
> > index e104409c3a0e..c25009bb72f2 100644
> > --- a/fs/f2fs/namei.c
> > +++ b/fs/f2fs/namei.c
> > @@ -22,8 +22,158 @@
> >   #include "acl.h"
> >   #include <trace/events/f2fs.h>
> > +static inline int is_extension_exist(const unsigned char *s, const char *sub,
> > +						bool tmp_ext)
> > +{
> > +	size_t slen = strlen(s);
> > +	size_t sublen = strlen(sub);
> > +	int i;
> > +
> > +	if (sublen == 1 && *sub == '*')
> > +		return 1;
> > +
> > +	/*
> > +	 * filename format of multimedia file should be defined as:
> > +	 * "filename + '.' + extension + (optional: '.' + temp extension)".
> > +	 */
> > +	if (slen < sublen + 2)
> > +		return 0;
> > +
> > +	if (!tmp_ext) {
> > +		/* file has no temp extension */
> > +		if (s[slen - sublen - 1] != '.')
> > +			return 0;
> > +		return !strncasecmp(s + slen - sublen, sub, sublen);
> > +	}
> > +
> > +	for (i = 1; i < slen - sublen; i++) {
> > +		if (s[i] != '.')
> > +			continue;
> > +		if (!strncasecmp(s + i + 1, sub, sublen))
> > +			return 1;
> > +	}
> > +
> > +	return 0;
> > +}
> > +
> > +int f2fs_update_extension_list(struct f2fs_sb_info *sbi, const char *name,
> > +							bool hot, bool set)
> > +{
> > +	__u8 (*extlist)[F2FS_EXTENSION_LEN] = sbi->raw_super->extension_list;
> > +	int cold_count = le32_to_cpu(sbi->raw_super->extension_count);
> > +	int hot_count = sbi->raw_super->hot_ext_count;
> > +	int total_count = cold_count + hot_count;
> > +	int start, count;
> > +	int i;
> > +
> > +	if (set) {
> > +		if (total_count == F2FS_MAX_EXTENSION)
> > +			return -EINVAL;
> > +	} else {
> > +		if (!hot && !cold_count)
> > +			return -EINVAL;
> > +		if (hot && !hot_count)
> > +			return -EINVAL;
> > +	}
> > +
> > +	if (hot) {
> > +		start = cold_count;
> > +		count = total_count;
> > +	} else {
> > +		start = 0;
> > +		count = cold_count;
> > +	}
> > +
> > +	for (i = start; i < count; i++) {
> > +		if (strcmp(name, extlist[i]))
> > +			continue;
> > +
> > +		if (set)
> > +			return -EINVAL;
> > +
> > +		memcpy(extlist[i], extlist[i + 1],
> > +				F2FS_EXTENSION_LEN * (total_count - i - 1));
> > +		memset(extlist[total_count - 1], 0, F2FS_EXTENSION_LEN);
> > +		if (hot)
> > +			sbi->raw_super->hot_ext_count = hot_count - 1;
> > +		else
> > +			sbi->raw_super->extension_count =
> > +						cpu_to_le32(cold_count - 1);
> > +		return 0;
> > +	}
> > +
> > +	if (!set)
> > +		return -EINVAL;
> > +
> > +	if (hot) {
> > +		memcpy(extlist[count], name, strlen(name));
> > +		sbi->raw_super->hot_ext_count = hot_count + 1;
> > +	} else {
> > +		char buf[F2FS_MAX_EXTENSION][F2FS_EXTENSION_LEN];
> > +
> > +		memcpy(buf, &extlist[cold_count],
> > +				F2FS_EXTENSION_LEN * hot_count);
> > +		memset(extlist[cold_count], 0, F2FS_EXTENSION_LEN);
> > +		memcpy(extlist[cold_count], name, strlen(name));
> > +		memcpy(&extlist[cold_count + 1], buf,
> > +				F2FS_EXTENSION_LEN * hot_count);
> > +		sbi->raw_super->extension_count = cpu_to_le32(cold_count + 1);
> > +	}
> > +	return 0;
> > +}
> > +
> > +static void set_compress_new_inode(struct f2fs_sb_info *sbi, struct inode *dir,
> > +				struct inode *inode, const unsigned char *name)
> > +{
> > +	__u8 (*extlist)[F2FS_EXTENSION_LEN] = sbi->raw_super->extension_list;
> > +	unsigned char (*noext)[F2FS_EXTENSION_LEN] =
> > +						F2FS_OPTION(sbi).noextensions;
> > +	unsigned char (*ext)[F2FS_EXTENSION_LEN] = F2FS_OPTION(sbi).extensions;
> > +	unsigned char ext_cnt = F2FS_OPTION(sbi).compress_ext_cnt;
> > +	unsigned char noext_cnt = F2FS_OPTION(sbi).nocompress_ext_cnt;
> > +	int i, cold_count, hot_count;
> > +
> > +	/* Caller should give the name of regular file or directory. */
> > +	if (!f2fs_sb_has_compression(sbi) || !name)
> > +		return;
> > +
> > +	if (S_ISDIR(inode->i_mode))
> > +		goto inherit_comp;
> 
> Documentation/filesystems/f2fs.rst
> 
> - Priority in between FS_COMPR_FL, FS_NOCOMP_FS, extensions:
> 
>   * compress_extension=so; nocompress_extension=zip; chattr +c dir; touch
>     dir/foo.so; touch dir/bar.zip; touch dir/baz.txt; then foo.so and baz.txt
>     should be compresse, bar.zip should be non-compressed. chattr +c dir/bar.zip
>     can enable compress on bar.zip.
> 
> It looks nocompress_extension has higher priority than flag inheriting?

I think so.

> 
> > +
> > +	/* Don't compress hot files. */
> > +	f2fs_down_read(&sbi->sb_lock);
> > +	cold_count = le32_to_cpu(sbi->raw_super->extension_count);
> > +	hot_count = sbi->raw_super->hot_ext_count;
> > +	for (i = cold_count; i < cold_count + hot_count; i++)
> > +		if (is_extension_exist(name, extlist[i], false))
> > +			break;
> > +	f2fs_up_read(&sbi->sb_lock);
> > +	if (i < (cold_count + hot_count))
> > +		return;
> > +
> > +	/* Don't compress unallowed extension. */
> > +	for (i = 0; i < noext_cnt; i++)
> > +		if (is_extension_exist(name, noext[i], false))
> > +			return;
> > +
> > +	/* Compress wanting extension. */
> > +	for (i = 0; i < ext_cnt; i++) {
> > +		if (is_extension_exist(name, ext[i], false)) {
> > +			set_compress_context(inode);
> > +			return;
> > +		}
> > +	}
> > +inherit_comp:
> > +	/* Inherit the {no-}compression flag in directory */
> > +	if (F2FS_I(dir)->i_flags & F2FS_NOCOMP_FL)
> > +		F2FS_I(inode)->i_flags |= F2FS_NOCOMP_FL;
> 
> f2fs_mark_inode_dirty_sync(, true)?

Done.

> 
> > +	else if (F2FS_I(dir)->i_flags & F2FS_COMPR_FL)
> > +		set_compress_context(inode);
> > +}
> > +
> >   static struct inode *f2fs_new_inode(struct user_namespace *mnt_userns,
> > -						struct inode *dir, umode_t mode)
> > +						struct inode *dir, umode_t mode,
> > +						const char *name)
> >   {
> >   	struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
> >   	nid_t ino;
> > @@ -114,12 +264,8 @@ static struct inode *f2fs_new_inode(struct user_namespace *mnt_userns,
> >   	if (F2FS_I(inode)->i_flags & F2FS_PROJINHERIT_FL)
> >   		set_inode_flag(inode, FI_PROJ_INHERIT);
> > -	if (f2fs_sb_has_compression(sbi)) {
> > -		/* Inherit the compression flag in directory */
> > -		if ((F2FS_I(dir)->i_flags & F2FS_COMPR_FL) &&
> > -					f2fs_may_compress(inode))
> > -			set_compress_context(inode);
> > -	}
> > +	/* Check compression first. */
> > +	set_compress_new_inode(sbi, dir, inode, name);
> >   	/* Should enable inline_data after compression set */
> >   	if (test_opt(sbi, INLINE_DATA) && f2fs_may_inline_data(inode))
> > @@ -153,40 +299,6 @@ static struct inode *f2fs_new_inode(struct user_namespace *mnt_userns,
> >   	return ERR_PTR(err);
> >   }
> > -static inline int is_extension_exist(const unsigned char *s, const char *sub,
> > -						bool tmp_ext)
> > -{
> > -	size_t slen = strlen(s);
> > -	size_t sublen = strlen(sub);
> > -	int i;
> > -
> > -	if (sublen == 1 && *sub == '*')
> > -		return 1;
> > -
> > -	/*
> > -	 * filename format of multimedia file should be defined as:
> > -	 * "filename + '.' + extension + (optional: '.' + temp extension)".
> > -	 */
> > -	if (slen < sublen + 2)
> > -		return 0;
> > -
> > -	if (!tmp_ext) {
> > -		/* file has no temp extension */
> > -		if (s[slen - sublen - 1] != '.')
> > -			return 0;
> > -		return !strncasecmp(s + slen - sublen, sub, sublen);
> > -	}
> > -
> > -	for (i = 1; i < slen - sublen; i++) {
> > -		if (s[i] != '.')
> > -			continue;
> > -		if (!strncasecmp(s + i + 1, sub, sublen))
> > -			return 1;
> > -	}
> > -
> > -	return 0;
> > -}
> > -
> >   /*
> >    * Set file's temperature for hot/cold data separation
> >    */
> > @@ -217,124 +329,6 @@ static inline void set_file_temperature(struct f2fs_sb_info *sbi, struct inode *
> >   		file_set_hot(inode);
> >   }
> > -int f2fs_update_extension_list(struct f2fs_sb_info *sbi, const char *name,
> > -							bool hot, bool set)
> > -{
> > -	__u8 (*extlist)[F2FS_EXTENSION_LEN] = sbi->raw_super->extension_list;
> > -	int cold_count = le32_to_cpu(sbi->raw_super->extension_count);
> > -	int hot_count = sbi->raw_super->hot_ext_count;
> > -	int total_count = cold_count + hot_count;
> > -	int start, count;
> > -	int i;
> > -
> > -	if (set) {
> > -		if (total_count == F2FS_MAX_EXTENSION)
> > -			return -EINVAL;
> > -	} else {
> > -		if (!hot && !cold_count)
> > -			return -EINVAL;
> > -		if (hot && !hot_count)
> > -			return -EINVAL;
> > -	}
> > -
> > -	if (hot) {
> > -		start = cold_count;
> > -		count = total_count;
> > -	} else {
> > -		start = 0;
> > -		count = cold_count;
> > -	}
> > -
> > -	for (i = start; i < count; i++) {
> > -		if (strcmp(name, extlist[i]))
> > -			continue;
> > -
> > -		if (set)
> > -			return -EINVAL;
> > -
> > -		memcpy(extlist[i], extlist[i + 1],
> > -				F2FS_EXTENSION_LEN * (total_count - i - 1));
> > -		memset(extlist[total_count - 1], 0, F2FS_EXTENSION_LEN);
> > -		if (hot)
> > -			sbi->raw_super->hot_ext_count = hot_count - 1;
> > -		else
> > -			sbi->raw_super->extension_count =
> > -						cpu_to_le32(cold_count - 1);
> > -		return 0;
> > -	}
> > -
> > -	if (!set)
> > -		return -EINVAL;
> > -
> > -	if (hot) {
> > -		memcpy(extlist[count], name, strlen(name));
> > -		sbi->raw_super->hot_ext_count = hot_count + 1;
> > -	} else {
> > -		char buf[F2FS_MAX_EXTENSION][F2FS_EXTENSION_LEN];
> > -
> > -		memcpy(buf, &extlist[cold_count],
> > -				F2FS_EXTENSION_LEN * hot_count);
> > -		memset(extlist[cold_count], 0, F2FS_EXTENSION_LEN);
> > -		memcpy(extlist[cold_count], name, strlen(name));
> > -		memcpy(&extlist[cold_count + 1], buf,
> > -				F2FS_EXTENSION_LEN * hot_count);
> > -		sbi->raw_super->extension_count = cpu_to_le32(cold_count + 1);
> > -	}
> > -	return 0;
> > -}
> > -
> > -static void set_compress_inode(struct f2fs_sb_info *sbi, struct inode *inode,
> > -						const unsigned char *name)
> > -{
> > -	__u8 (*extlist)[F2FS_EXTENSION_LEN] = sbi->raw_super->extension_list;
> > -	unsigned char (*noext)[F2FS_EXTENSION_LEN] = F2FS_OPTION(sbi).noextensions;
> > -	unsigned char (*ext)[F2FS_EXTENSION_LEN] = F2FS_OPTION(sbi).extensions;
> > -	unsigned char ext_cnt = F2FS_OPTION(sbi).compress_ext_cnt;
> > -	unsigned char noext_cnt = F2FS_OPTION(sbi).nocompress_ext_cnt;
> > -	int i, cold_count, hot_count;
> > -
> > -	if (!f2fs_sb_has_compression(sbi) ||
> > -			F2FS_I(inode)->i_flags & F2FS_NOCOMP_FL ||
> > -			!f2fs_may_compress(inode) ||
> > -			(!ext_cnt && !noext_cnt))
> > -		return;
> > -
> > -	f2fs_down_read(&sbi->sb_lock);
> > -
> > -	cold_count = le32_to_cpu(sbi->raw_super->extension_count);
> > -	hot_count = sbi->raw_super->hot_ext_count;
> > -
> > -	for (i = cold_count; i < cold_count + hot_count; i++) {
> > -		if (is_extension_exist(name, extlist[i], false)) {
> > -			f2fs_up_read(&sbi->sb_lock);
> > -			return;
> > -		}
> > -	}
> > -
> > -	f2fs_up_read(&sbi->sb_lock);
> > -
> > -	for (i = 0; i < noext_cnt; i++) {
> > -		if (is_extension_exist(name, noext[i], false)) {
> > -			f2fs_disable_compressed_file(inode);
> > -			return;
> > -		}
> > -	}
> > -
> > -	if (is_inode_flag_set(inode, FI_COMPRESSED_FILE))
> > -		return;
> > -
> > -	for (i = 0; i < ext_cnt; i++) {
> > -		if (!is_extension_exist(name, ext[i], false))
> > -			continue;
> > -
> > -		/* Do not use inline_data with compression */
> > -		stat_dec_inline_inode(inode);
> > -		clear_inode_flag(inode, FI_INLINE_DATA);
> > -		set_compress_context(inode);
> > -		return;
> > -	}
> > -}
> > -
> >   static int f2fs_create(struct user_namespace *mnt_userns, struct inode *dir,
> >   		       struct dentry *dentry, umode_t mode, bool excl)
> >   {
> > @@ -352,15 +346,13 @@ static int f2fs_create(struct user_namespace *mnt_userns, struct inode *dir,
> >   	if (err)
> >   		return err;
> > -	inode = f2fs_new_inode(mnt_userns, dir, mode);
> > +	inode = f2fs_new_inode(mnt_userns, dir, mode, dentry->d_name.name);
> >   	if (IS_ERR(inode))
> >   		return PTR_ERR(inode);
> >   	if (!test_opt(sbi, DISABLE_EXT_IDENTIFY))
> >   		set_file_temperature(sbi, inode, dentry->d_name.name);
> > -	set_compress_inode(sbi, inode, dentry->d_name.name);
> > -
> >   	inode->i_op = &f2fs_file_inode_operations;
> >   	inode->i_fop = &f2fs_file_operations;
> >   	inode->i_mapping->a_ops = &f2fs_dblock_aops;
> > @@ -689,7 +681,7 @@ static int f2fs_symlink(struct user_namespace *mnt_userns, struct inode *dir,
> >   	if (err)
> >   		return err;
> > -	inode = f2fs_new_inode(mnt_userns, dir, S_IFLNK | S_IRWXUGO);
> > +	inode = f2fs_new_inode(mnt_userns, dir, S_IFLNK | S_IRWXUGO, NULL);
> >   	if (IS_ERR(inode))
> >   		return PTR_ERR(inode);
> > @@ -760,7 +752,8 @@ static int f2fs_mkdir(struct user_namespace *mnt_userns, struct inode *dir,
> >   	if (err)
> >   		return err;
> > -	inode = f2fs_new_inode(mnt_userns, dir, S_IFDIR | mode);
> > +	inode = f2fs_new_inode(mnt_userns, dir, S_IFDIR | mode,
> > +						dentry->d_name.name);
> 
> Why we need to pass directory's name to set_compress_new_inode()?
> 
> Could we just check S_IFDIR in child inode?

Yup, good point. Let me send v5.

> 
> Thanks,
> 
> >   	if (IS_ERR(inode))
> >   		return PTR_ERR(inode);
> > @@ -817,7 +810,7 @@ static int f2fs_mknod(struct user_namespace *mnt_userns, struct inode *dir,
> >   	if (err)
> >   		return err;
> > -	inode = f2fs_new_inode(mnt_userns, dir, mode);
> > +	inode = f2fs_new_inode(mnt_userns, dir, mode, NULL);
> >   	if (IS_ERR(inode))
> >   		return PTR_ERR(inode);
> > @@ -856,7 +849,7 @@ static int __f2fs_tmpfile(struct user_namespace *mnt_userns, struct inode *dir,
> >   	if (err)
> >   		return err;
> > -	inode = f2fs_new_inode(mnt_userns, dir, mode);
> > +	inode = f2fs_new_inode(mnt_userns, dir, mode, NULL);
> >   	if (IS_ERR(inode))
> >   		return PTR_ERR(inode);
  

If compress_extension is set, and a newly created file matches the
extension, the file could be marked as compression file. However,
if inline_data is also enabled, there is no chance to check its
extension since f2fs_should_compress() always returns false.

This patch moves set_compress_inode(), which do extension check, in
f2fs_should_compress() to check extensions before setting inline
data flag.

Fixes: 7165841d578e ("f2fs: fix to check inline_data during compressed inode conversion")
Signed-off-by: Sheng Yong <shengyong@oppo.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
---

 Change log from v4:
  - call f2fs_mark_inode_dirty_sync
  - remove name for directory

 fs/f2fs/f2fs.h  |   2 +-
 fs/f2fs/namei.c | 329 ++++++++++++++++++++++++------------------------
 2 files changed, 164 insertions(+), 167 deletions(-)

diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
index 96bd3461c0bb..f0833638f59e 100644
--- a/fs/f2fs/f2fs.h
+++ b/fs/f2fs/f2fs.h
@@ -2980,7 +2980,7 @@ static inline void f2fs_change_bit(unsigned int nr, char *addr)
 /* Flags that should be inherited by new inodes from their parent. */
 #define F2FS_FL_INHERITED (F2FS_SYNC_FL | F2FS_NODUMP_FL | F2FS_NOATIME_FL | \
 			   F2FS_DIRSYNC_FL | F2FS_PROJINHERIT_FL | \
-			   F2FS_CASEFOLD_FL | F2FS_COMPR_FL | F2FS_NOCOMP_FL)
+			   F2FS_CASEFOLD_FL)
 
 /* Flags that are appropriate for regular files (all but dir-specific ones). */
 #define F2FS_REG_FLMASK		(~(F2FS_DIRSYNC_FL | F2FS_PROJINHERIT_FL | \
diff --git a/fs/f2fs/namei.c b/fs/f2fs/namei.c
index e104409c3a0e..54448dccbb6a 100644
--- a/fs/f2fs/namei.c
+++ b/fs/f2fs/namei.c
@@ -22,8 +22,163 @@
 #include "acl.h"
 #include <trace/events/f2fs.h>
 
+static inline int is_extension_exist(const unsigned char *s, const char *sub,
+						bool tmp_ext)
+{
+	size_t slen = strlen(s);
+	size_t sublen = strlen(sub);
+	int i;
+
+	if (sublen == 1 && *sub == '*')
+		return 1;
+
+	/*
+	 * filename format of multimedia file should be defined as:
+	 * "filename + '.' + extension + (optional: '.' + temp extension)".
+	 */
+	if (slen < sublen + 2)
+		return 0;
+
+	if (!tmp_ext) {
+		/* file has no temp extension */
+		if (s[slen - sublen - 1] != '.')
+			return 0;
+		return !strncasecmp(s + slen - sublen, sub, sublen);
+	}
+
+	for (i = 1; i < slen - sublen; i++) {
+		if (s[i] != '.')
+			continue;
+		if (!strncasecmp(s + i + 1, sub, sublen))
+			return 1;
+	}
+
+	return 0;
+}
+
+int f2fs_update_extension_list(struct f2fs_sb_info *sbi, const char *name,
+							bool hot, bool set)
+{
+	__u8 (*extlist)[F2FS_EXTENSION_LEN] = sbi->raw_super->extension_list;
+	int cold_count = le32_to_cpu(sbi->raw_super->extension_count);
+	int hot_count = sbi->raw_super->hot_ext_count;
+	int total_count = cold_count + hot_count;
+	int start, count;
+	int i;
+
+	if (set) {
+		if (total_count == F2FS_MAX_EXTENSION)
+			return -EINVAL;
+	} else {
+		if (!hot && !cold_count)
+			return -EINVAL;
+		if (hot && !hot_count)
+			return -EINVAL;
+	}
+
+	if (hot) {
+		start = cold_count;
+		count = total_count;
+	} else {
+		start = 0;
+		count = cold_count;
+	}
+
+	for (i = start; i < count; i++) {
+		if (strcmp(name, extlist[i]))
+			continue;
+
+		if (set)
+			return -EINVAL;
+
+		memcpy(extlist[i], extlist[i + 1],
+				F2FS_EXTENSION_LEN * (total_count - i - 1));
+		memset(extlist[total_count - 1], 0, F2FS_EXTENSION_LEN);
+		if (hot)
+			sbi->raw_super->hot_ext_count = hot_count - 1;
+		else
+			sbi->raw_super->extension_count =
+						cpu_to_le32(cold_count - 1);
+		return 0;
+	}
+
+	if (!set)
+		return -EINVAL;
+
+	if (hot) {
+		memcpy(extlist[count], name, strlen(name));
+		sbi->raw_super->hot_ext_count = hot_count + 1;
+	} else {
+		char buf[F2FS_MAX_EXTENSION][F2FS_EXTENSION_LEN];
+
+		memcpy(buf, &extlist[cold_count],
+				F2FS_EXTENSION_LEN * hot_count);
+		memset(extlist[cold_count], 0, F2FS_EXTENSION_LEN);
+		memcpy(extlist[cold_count], name, strlen(name));
+		memcpy(&extlist[cold_count + 1], buf,
+				F2FS_EXTENSION_LEN * hot_count);
+		sbi->raw_super->extension_count = cpu_to_le32(cold_count + 1);
+	}
+	return 0;
+}
+
+static void set_compress_new_inode(struct f2fs_sb_info *sbi, struct inode *dir,
+				struct inode *inode, const unsigned char *name)
+{
+	__u8 (*extlist)[F2FS_EXTENSION_LEN] = sbi->raw_super->extension_list;
+	unsigned char (*noext)[F2FS_EXTENSION_LEN] =
+						F2FS_OPTION(sbi).noextensions;
+	unsigned char (*ext)[F2FS_EXTENSION_LEN] = F2FS_OPTION(sbi).extensions;
+	unsigned char ext_cnt = F2FS_OPTION(sbi).compress_ext_cnt;
+	unsigned char noext_cnt = F2FS_OPTION(sbi).nocompress_ext_cnt;
+	int i, cold_count, hot_count;
+
+	if (!f2fs_sb_has_compression(sbi))
+		return;
+
+	if (S_ISDIR(inode->i_mode))
+		goto inherit_comp;
+
+	/* This name comes only from normal files. */
+	if (!name)
+		return;
+
+	/* Don't compress hot files. */
+	f2fs_down_read(&sbi->sb_lock);
+	cold_count = le32_to_cpu(sbi->raw_super->extension_count);
+	hot_count = sbi->raw_super->hot_ext_count;
+	for (i = cold_count; i < cold_count + hot_count; i++)
+		if (is_extension_exist(name, extlist[i], false))
+			break;
+	f2fs_up_read(&sbi->sb_lock);
+	if (i < (cold_count + hot_count))
+		return;
+
+	/* Don't compress unallowed extension. */
+	for (i = 0; i < noext_cnt; i++)
+		if (is_extension_exist(name, noext[i], false))
+			return;
+
+	/* Compress wanting extension. */
+	for (i = 0; i < ext_cnt; i++) {
+		if (is_extension_exist(name, ext[i], false)) {
+			set_compress_context(inode);
+			return;
+		}
+	}
+inherit_comp:
+	/* Inherit the {no-}compression flag in directory */
+	if (F2FS_I(dir)->i_flags & F2FS_NOCOMP_FL) {
+		F2FS_I(inode)->i_flags |= F2FS_NOCOMP_FL;
+		f2fs_mark_inode_dirty_sync(inode, true);
+	} else if (F2FS_I(dir)->i_flags & F2FS_COMPR_FL) {
+		set_compress_context(inode);
+	}
+}
+
 static struct inode *f2fs_new_inode(struct user_namespace *mnt_userns,
-						struct inode *dir, umode_t mode)
+						struct inode *dir, umode_t mode,
+						const char *name)
 {
 	struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
 	nid_t ino;
@@ -114,12 +269,8 @@ static struct inode *f2fs_new_inode(struct user_namespace *mnt_userns,
 	if (F2FS_I(inode)->i_flags & F2FS_PROJINHERIT_FL)
 		set_inode_flag(inode, FI_PROJ_INHERIT);
 
-	if (f2fs_sb_has_compression(sbi)) {
-		/* Inherit the compression flag in directory */
-		if ((F2FS_I(dir)->i_flags & F2FS_COMPR_FL) &&
-					f2fs_may_compress(inode))
-			set_compress_context(inode);
-	}
+	/* Check compression first. */
+	set_compress_new_inode(sbi, dir, inode, name);
 
 	/* Should enable inline_data after compression set */
 	if (test_opt(sbi, INLINE_DATA) && f2fs_may_inline_data(inode))
@@ -153,40 +304,6 @@ static struct inode *f2fs_new_inode(struct user_namespace *mnt_userns,
 	return ERR_PTR(err);
 }
 
-static inline int is_extension_exist(const unsigned char *s, const char *sub,
-						bool tmp_ext)
-{
-	size_t slen = strlen(s);
-	size_t sublen = strlen(sub);
-	int i;
-
-	if (sublen == 1 && *sub == '*')
-		return 1;
-
-	/*
-	 * filename format of multimedia file should be defined as:
-	 * "filename + '.' + extension + (optional: '.' + temp extension)".
-	 */
-	if (slen < sublen + 2)
-		return 0;
-
-	if (!tmp_ext) {
-		/* file has no temp extension */
-		if (s[slen - sublen - 1] != '.')
-			return 0;
-		return !strncasecmp(s + slen - sublen, sub, sublen);
-	}
-
-	for (i = 1; i < slen - sublen; i++) {
-		if (s[i] != '.')
-			continue;
-		if (!strncasecmp(s + i + 1, sub, sublen))
-			return 1;
-	}
-
-	return 0;
-}
-
 /*
  * Set file's temperature for hot/cold data separation
  */
@@ -217,124 +334,6 @@ static inline void set_file_temperature(struct f2fs_sb_info *sbi, struct inode *
 		file_set_hot(inode);
 }
 
-int f2fs_update_extension_list(struct f2fs_sb_info *sbi, const char *name,
-							bool hot, bool set)
-{
-	__u8 (*extlist)[F2FS_EXTENSION_LEN] = sbi->raw_super->extension_list;
-	int cold_count = le32_to_cpu(sbi->raw_super->extension_count);
-	int hot_count = sbi->raw_super->hot_ext_count;
-	int total_count = cold_count + hot_count;
-	int start, count;
-	int i;
-
-	if (set) {
-		if (total_count == F2FS_MAX_EXTENSION)
-			return -EINVAL;
-	} else {
-		if (!hot && !cold_count)
-			return -EINVAL;
-		if (hot && !hot_count)
-			return -EINVAL;
-	}
-
-	if (hot) {
-		start = cold_count;
-		count = total_count;
-	} else {
-		start = 0;
-		count = cold_count;
-	}
-
-	for (i = start; i < count; i++) {
-		if (strcmp(name, extlist[i]))
-			continue;
-
-		if (set)
-			return -EINVAL;
-
-		memcpy(extlist[i], extlist[i + 1],
-				F2FS_EXTENSION_LEN * (total_count - i - 1));
-		memset(extlist[total_count - 1], 0, F2FS_EXTENSION_LEN);
-		if (hot)
-			sbi->raw_super->hot_ext_count = hot_count - 1;
-		else
-			sbi->raw_super->extension_count =
-						cpu_to_le32(cold_count - 1);
-		return 0;
-	}
-
-	if (!set)
-		return -EINVAL;
-
-	if (hot) {
-		memcpy(extlist[count], name, strlen(name));
-		sbi->raw_super->hot_ext_count = hot_count + 1;
-	} else {
-		char buf[F2FS_MAX_EXTENSION][F2FS_EXTENSION_LEN];
-
-		memcpy(buf, &extlist[cold_count],
-				F2FS_EXTENSION_LEN * hot_count);
-		memset(extlist[cold_count], 0, F2FS_EXTENSION_LEN);
-		memcpy(extlist[cold_count], name, strlen(name));
-		memcpy(&extlist[cold_count + 1], buf,
-				F2FS_EXTENSION_LEN * hot_count);
-		sbi->raw_super->extension_count = cpu_to_le32(cold_count + 1);
-	}
-	return 0;
-}
-
-static void set_compress_inode(struct f2fs_sb_info *sbi, struct inode *inode,
-						const unsigned char *name)
-{
-	__u8 (*extlist)[F2FS_EXTENSION_LEN] = sbi->raw_super->extension_list;
-	unsigned char (*noext)[F2FS_EXTENSION_LEN] = F2FS_OPTION(sbi).noextensions;
-	unsigned char (*ext)[F2FS_EXTENSION_LEN] = F2FS_OPTION(sbi).extensions;
-	unsigned char ext_cnt = F2FS_OPTION(sbi).compress_ext_cnt;
-	unsigned char noext_cnt = F2FS_OPTION(sbi).nocompress_ext_cnt;
-	int i, cold_count, hot_count;
-
-	if (!f2fs_sb_has_compression(sbi) ||
-			F2FS_I(inode)->i_flags & F2FS_NOCOMP_FL ||
-			!f2fs_may_compress(inode) ||
-			(!ext_cnt && !noext_cnt))
-		return;
-
-	f2fs_down_read(&sbi->sb_lock);
-
-	cold_count = le32_to_cpu(sbi->raw_super->extension_count);
-	hot_count = sbi->raw_super->hot_ext_count;
-
-	for (i = cold_count; i < cold_count + hot_count; i++) {
-		if (is_extension_exist(name, extlist[i], false)) {
-			f2fs_up_read(&sbi->sb_lock);
-			return;
-		}
-	}
-
-	f2fs_up_read(&sbi->sb_lock);
-
-	for (i = 0; i < noext_cnt; i++) {
-		if (is_extension_exist(name, noext[i], false)) {
-			f2fs_disable_compressed_file(inode);
-			return;
-		}
-	}
-
-	if (is_inode_flag_set(inode, FI_COMPRESSED_FILE))
-		return;
-
-	for (i = 0; i < ext_cnt; i++) {
-		if (!is_extension_exist(name, ext[i], false))
-			continue;
-
-		/* Do not use inline_data with compression */
-		stat_dec_inline_inode(inode);
-		clear_inode_flag(inode, FI_INLINE_DATA);
-		set_compress_context(inode);
-		return;
-	}
-}
-
 static int f2fs_create(struct user_namespace *mnt_userns, struct inode *dir,
 		       struct dentry *dentry, umode_t mode, bool excl)
 {
@@ -352,15 +351,13 @@ static int f2fs_create(struct user_namespace *mnt_userns, struct inode *dir,
 	if (err)
 		return err;
 
-	inode = f2fs_new_inode(mnt_userns, dir, mode);
+	inode = f2fs_new_inode(mnt_userns, dir, mode, dentry->d_name.name);
 	if (IS_ERR(inode))
 		return PTR_ERR(inode);
 
 	if (!test_opt(sbi, DISABLE_EXT_IDENTIFY))
 		set_file_temperature(sbi, inode, dentry->d_name.name);
 
-	set_compress_inode(sbi, inode, dentry->d_name.name);
-
 	inode->i_op = &f2fs_file_inode_operations;
 	inode->i_fop = &f2fs_file_operations;
 	inode->i_mapping->a_ops = &f2fs_dblock_aops;
@@ -689,7 +686,7 @@ static int f2fs_symlink(struct user_namespace *mnt_userns, struct inode *dir,
 	if (err)
 		return err;
 
-	inode = f2fs_new_inode(mnt_userns, dir, S_IFLNK | S_IRWXUGO);
+	inode = f2fs_new_inode(mnt_userns, dir, S_IFLNK | S_IRWXUGO, NULL);
 	if (IS_ERR(inode))
 		return PTR_ERR(inode);
 
@@ -760,7 +757,7 @@ static int f2fs_mkdir(struct user_namespace *mnt_userns, struct inode *dir,
 	if (err)
 		return err;
 
-	inode = f2fs_new_inode(mnt_userns, dir, S_IFDIR | mode);
+	inode = f2fs_new_inode(mnt_userns, dir, S_IFDIR | mode, NULL);
 	if (IS_ERR(inode))
 		return PTR_ERR(inode);
 
@@ -817,7 +814,7 @@ static int f2fs_mknod(struct user_namespace *mnt_userns, struct inode *dir,
 	if (err)
 		return err;
 
-	inode = f2fs_new_inode(mnt_userns, dir, mode);
+	inode = f2fs_new_inode(mnt_userns, dir, mode, NULL);
 	if (IS_ERR(inode))
 		return PTR_ERR(inode);
 
@@ -856,7 +853,7 @@ static int __f2fs_tmpfile(struct user_namespace *mnt_userns, struct inode *dir,
 	if (err)
 		return err;
 
-	inode = f2fs_new_inode(mnt_userns, dir, mode);
+	inode = f2fs_new_inode(mnt_userns, dir, mode, NULL);
 	if (IS_ERR(inode))
 		return PTR_ERR(inode);
  

On 2022/11/24 5:29, Jaegeuk Kim wrote:
>>> +	if (S_ISDIR(inode->i_mode))
>>> +		goto inherit_comp;
>>
>> Documentation/filesystems/f2fs.rst
>>
>> - Priority in between FS_COMPR_FL, FS_NOCOMP_FS, extensions:
>>
>>    * compress_extension=so; nocompress_extension=zip; chattr +c dir; touch
>>      dir/foo.so; touch dir/bar.zip; touch dir/baz.txt; then foo.so and baz.txt
>>      should be compresse, bar.zip should be non-compressed. chattr +c dir/bar.zip
>>      can enable compress on bar.zip.
>>
>> It looks nocompress_extension has higher priority than flag inheriting?
> 
> I think so.

Hi Sheng, Jaegeuk,

Yup, I guess I misunderstand the code. :)

Thanks,
  

On 2022/11/24 5:46, Jaegeuk Kim wrote:
> If compress_extension is set, and a newly created file matches the
> extension, the file could be marked as compression file. However,
> if inline_data is also enabled, there is no chance to check its
> extension since f2fs_should_compress() always returns false.
> 
> This patch moves set_compress_inode(), which do extension check, in
> f2fs_should_compress() to check extensions before setting inline
> data flag.
> 
> Fixes: 7165841d578e ("f2fs: fix to check inline_data during compressed inode conversion")
> Signed-off-by: Sheng Yong <shengyong@oppo.com>
> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

Reviewed-by: Chao Yu <chao@kernel.org>

Thanks,