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Signed-off-by: Daeho Jeong --- v5: prevent only i_size update for atomic files when dirtying inode v4: move i_size update after clearing atomic file flag in f2fs_abort_atomic_write() v3: make sure inode is clean while atomic writing --- fs/f2fs/f2fs.h | 8 ++++++++ fs/f2fs/file.c | 18 +++++++++++------- fs/f2fs/inode.c | 5 ++++- fs/f2fs/segment.c | 14 ++++++++++---- 4 files changed, 33 insertions(+), 12 deletions(-) diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h index e7e750e6b332..68d2a3383c38 100644 --- a/fs/f2fs/f2fs.h +++ b/fs/f2fs/f2fs.h @@ -764,6 +764,7 @@ enum { FI_COMPRESS_RELEASED, /* compressed blocks were released */ FI_ALIGNED_WRITE, /* enable aligned write */ FI_COW_FILE, /* indicate COW file */ + FI_ATOMIC_COMMIT, /* indicate atomic commit completed except disk sync */ FI_MAX, /* max flag, never be used */ }; @@ -822,6 +823,7 @@ struct f2fs_inode_info { unsigned int i_cluster_size; /* cluster size */ unsigned int atomic_write_cnt; + loff_t original_i_size; /* original i_size before atomic write */ }; static inline void get_extent_info(struct extent_info *ext, @@ -3072,6 +3074,8 @@ static inline void f2fs_i_blocks_write(struct inode *inode, set_inode_flag(inode, FI_AUTO_RECOVER); } +static inline bool f2fs_is_atomic_file(struct inode *inode); + static inline void f2fs_i_size_write(struct inode *inode, loff_t i_size) { bool clean = !is_inode_flag_set(inode, FI_DIRTY_INODE); @@ -3081,6 +3085,10 @@ static inline void f2fs_i_size_write(struct inode *inode, loff_t i_size) return; i_size_write(inode, i_size); + + if (f2fs_is_atomic_file(inode)) + return; + f2fs_mark_inode_dirty_sync(inode, true); if (clean || recover) set_inode_flag(inode, FI_AUTO_RECOVER); diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c index ec9ee0f6d502..7ce629c95f4a 100644 --- a/fs/f2fs/file.c +++ b/fs/f2fs/file.c @@ -1991,6 +1991,7 @@ static int f2fs_ioc_start_atomic_write(struct file *filp) struct f2fs_inode_info *fi = F2FS_I(inode); struct f2fs_sb_info *sbi = F2FS_I_SB(inode); struct inode *pinode; + loff_t isize; int ret; if (!inode_owner_or_capable(mnt_userns, inode)) @@ -2049,7 +2050,12 @@ static int f2fs_ioc_start_atomic_write(struct file *filp) f2fs_up_write(&fi->i_gc_rwsem[WRITE]); goto out; } - f2fs_i_size_write(fi->cow_inode, i_size_read(inode)); + + f2fs_write_inode(inode, NULL); + + isize = i_size_read(inode); + fi->original_i_size = isize; + f2fs_i_size_write(fi->cow_inode, isize); stat_inc_atomic_inode(inode); @@ -2087,16 +2093,14 @@ static int f2fs_ioc_commit_atomic_write(struct file *filp) if (f2fs_is_atomic_file(inode)) { ret = f2fs_commit_atomic_write(inode); - if (ret) - goto unlock_out; - - ret = f2fs_do_sync_file(filp, 0, LLONG_MAX, 0, true); if (!ret) - f2fs_abort_atomic_write(inode, false); + ret = f2fs_do_sync_file(filp, 0, LLONG_MAX, 0, true); + + f2fs_abort_atomic_write(inode, ret); } else { ret = f2fs_do_sync_file(filp, 0, LLONG_MAX, 1, false); } -unlock_out: + inode_unlock(inode); mnt_drop_write_file(filp); return ret; diff --git a/fs/f2fs/inode.c b/fs/f2fs/inode.c index 9f0d3864d9f1..044f132b87bc 100644 --- a/fs/f2fs/inode.c +++ b/fs/f2fs/inode.c @@ -621,9 +621,12 @@ void f2fs_update_inode(struct inode *inode, struct page *node_page) ri->i_uid = cpu_to_le32(i_uid_read(inode)); ri->i_gid = cpu_to_le32(i_gid_read(inode)); ri->i_links = cpu_to_le32(inode->i_nlink); - ri->i_size = cpu_to_le64(i_size_read(inode)); ri->i_blocks = cpu_to_le64(SECTOR_TO_BLOCK(inode->i_blocks) + 1); + if (!f2fs_is_atomic_file(inode) || + is_inode_flag_set(inode, FI_ATOMIC_COMMIT)) + ri->i_size = cpu_to_le64(i_size_read(inode)); + if (et) { read_lock(&et->lock); set_raw_extent(&et->largest, &ri->i_ext); diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c index 289bcb7ca300..264b4e352319 100644 --- a/fs/f2fs/segment.c +++ b/fs/f2fs/segment.c @@ -192,14 +192,18 @@ void f2fs_abort_atomic_write(struct inode *inode, bool clean) if (!f2fs_is_atomic_file(inode)) return; - if (clean) - truncate_inode_pages_final(inode->i_mapping); clear_inode_flag(fi->cow_inode, FI_COW_FILE); iput(fi->cow_inode); fi->cow_inode = NULL; release_atomic_write_cnt(inode); + clear_inode_flag(inode, FI_ATOMIC_COMMIT); clear_inode_flag(inode, FI_ATOMIC_FILE); stat_dec_atomic_inode(inode); + + if (clean) { + truncate_inode_pages_final(inode->i_mapping); + f2fs_i_size_write(inode, fi->original_i_size); + } } static int __replace_atomic_write_block(struct inode *inode, pgoff_t index, @@ -335,10 +339,12 @@ static int __f2fs_commit_atomic_write(struct inode *inode) } out: - if (ret) + if (ret) { sbi->revoked_atomic_block += fi->atomic_write_cnt; - else + } else { sbi->committed_atomic_block += fi->atomic_write_cnt; + set_inode_flag(inode, FI_ATOMIC_COMMIT); + } __complete_revoke_list(inode, &revoke_list, ret ? true : false);