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f2fs: sysfs: support atgc_enabled

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When we add "atgc" to the fstab table, ATGC is not immediately enabled.
There is a 7-day time threshold, and we can use "atgc_enabled" to
show whether ATGC is enabled.

Signed-off-by: liujinbao1 <liujinbao1@xiaomi.com>
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This commit is contained in:
liujinbao1 2024-02-21 15:32:49 +08:00 committed by Jaegeuk Kim
parent b722ff8ad6
commit 6f092b55e1
2 changed files with 14 additions and 0 deletions
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6
Documentation/ABI/testing/sysfs-fs-f2fs
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@ -579,6 +579,12 @@ Description: When ATGC is on, it controls age threshold to bypass GCing young
candidates whose age is not beyond the threshold, by default it was
initialized as 604800 seconds (equals to 7 days).
What: /sys/fs/f2fs/<disk>/atgc_enabled
Date: Feb 2024
Contact: "Jinbao Liu" <liujinbao1@xiaomi.com>
Description: It represents whether ATGC is on or off. The value is 1 which
indicates that ATGC is on, and 0 indicates that it is off.
What: /sys/fs/f2fs/<disk>/gc_reclaimed_segments
Date: July 2021
Contact: "Daeho Jeong" <daehojeong@google.com>

8
fs/f2fs/sysfs.c
View File

@ -170,6 +170,12 @@ static ssize_t undiscard_blks_show(struct f2fs_attr *a,
SM_I(sbi)->dcc_info->undiscard_blks);
}
static ssize_t atgc_enabled_show(struct f2fs_attr *a,
struct f2fs_sb_info *sbi, char *buf)
{
return sysfs_emit(buf, "%d\n", sbi->am.atgc_enabled ? 1 : 0);
}
static ssize_t gc_mode_show(struct f2fs_attr *a,
struct f2fs_sb_info *sbi, char *buf)
{
@ -1082,6 +1088,7 @@ 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(atgc_enabled);
F2FS_GENERAL_RO_ATTR(gc_mode);
#ifdef CONFIG_F2FS_STAT_FS
F2FS_GENERAL_RO_ATTR(moved_blocks_background);
@ -1211,6 +1218,7 @@ static struct attribute *f2fs_attrs[] = {
ATTR_LIST(atgc_candidate_count),
ATTR_LIST(atgc_age_weight),
ATTR_LIST(atgc_age_threshold),
ATTR_LIST(atgc_enabled),
ATTR_LIST(seq_file_ra_mul),
ATTR_LIST(gc_segment_mode),
ATTR_LIST(gc_reclaimed_segments),