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Introducing it increases readability. Signed-off-by: Yangtao Li --- Documentation/ABI/testing/sysfs-fs-f2fs | 6 ++++++ fs/f2fs/f2fs.h | 1 + fs/f2fs/sysfs.c | 18 ++++++++++++++++++ 3 files changed, 25 insertions(+) diff --git a/Documentation/ABI/testing/sysfs-fs-f2fs b/Documentation/ABI/testing/sysfs-fs-f2fs index 483639fb727b..6466f3b1f0a9 100644 --- a/Documentation/ABI/testing/sysfs-fs-f2fs +++ b/Documentation/ABI/testing/sysfs-fs-f2fs @@ -634,3 +634,9 @@ Date: July 2022 Contact: "Daeho Jeong" Description: Show the accumulated total revoked atomic write block count after boot. If you write "0" here, you can initialize to "0". + +What: /sys/fs/f2fs//gc_mode +Date: October 2022 +Contact: "Yangtao Li" +Description: Show the current gc_mode as a string. + This is a read-only entry. diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h index e6355a5683b7..80f23e44a442 100644 --- a/fs/f2fs/f2fs.h +++ b/fs/f2fs/f2fs.h @@ -1318,6 +1318,7 @@ enum { MAX_TIME, }; +/* Note that you need to keep synchronization with this gc_mode_names array */ enum { GC_NORMAL, GC_IDLE_CB, diff --git a/fs/f2fs/sysfs.c b/fs/f2fs/sysfs.c index 49898a7243ba..058857d8b3b9 100644 --- a/fs/f2fs/sysfs.c +++ b/fs/f2fs/sysfs.c @@ -41,6 +41,16 @@ enum { ATGC_INFO, /* struct atgc_management */ }; +static const char *gc_mode_names[MAX_GC_MODE] = { + "GC_NORMAL", + "GC_IDLE_CB", + "GC_IDLE_GREEDY", + "GC_IDLE_AT", + "GC_URGENT_HIGH", + "GC_URGENT_LOW", + "GC_URGENT_MID" +}; + struct f2fs_attr { struct attribute attr; ssize_t (*show)(struct f2fs_attr *, struct f2fs_sb_info *, char *); @@ -133,6 +143,12 @@ static ssize_t pending_discard_show(struct f2fs_attr *a, &SM_I(sbi)->dcc_info->discard_cmd_cnt)); } +static ssize_t gc_mode_show(struct f2fs_attr *a, + struct f2fs_sb_info *sbi, char *buf) +{ + return sprintf(buf, "%s\n", gc_mode_names[sbi->gc_mode]); +} + static ssize_t features_show(struct f2fs_attr *a, struct f2fs_sb_info *sbi, char *buf) { @@ -823,6 +839,7 @@ F2FS_GENERAL_RO_ATTR(encoding); F2FS_GENERAL_RO_ATTR(mounted_time_sec); F2FS_GENERAL_RO_ATTR(main_blkaddr); F2FS_GENERAL_RO_ATTR(pending_discard); +F2FS_GENERAL_RO_ATTR(gc_mode); #ifdef CONFIG_F2FS_STAT_FS F2FS_STAT_ATTR(STAT_INFO, f2fs_stat_info, cp_foreground_calls, cp_count); F2FS_STAT_ATTR(STAT_INFO, f2fs_stat_info, cp_background_calls, bg_cp_count); @@ -904,6 +921,7 @@ static struct attribute *f2fs_attrs[] = { ATTR_LIST(max_discard_issue_time), ATTR_LIST(discard_granularity), ATTR_LIST(pending_discard), + ATTR_LIST(gc_mode), ATTR_LIST(batched_trim_sections), ATTR_LIST(ipu_policy), ATTR_LIST(min_ipu_util),