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f2fs: introduce gc_mode sysfs node

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Revert "f2fs: make gc_urgent and gc_segment_mode sysfs node readable".

Add a gc_mode sysfs node to show the current gc_mode as a string.

Signed-off-by: Yangtao Li <frank.li@vivo.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This commit is contained in:
Yangtao Li 2022-10-25 11:32:16 +08:00 committed by Jaegeuk Kim
parent 7b02b22018
commit a3951cd199
3 changed files with 16 additions and 6 deletions
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6
Documentation/ABI/testing/sysfs-fs-f2fs
View file

@ -640,3 +640,9 @@ Date: July 2022
Contact: "Daeho Jeong" <daehojeong@google.com>
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/<disk>/gc_mode
Date: October 2022
Contact: "Yangtao Li" <frank.li@vivo.com>
Description: Show the current gc_mode as a string.
This is a read-only entry.

1
fs/f2fs/f2fs.h
View file

@ -1319,6 +1319,7 @@ enum {
MAX_TIME,
};
/* Note that you need to keep synchronization with this gc_mode_names array */
enum {
GC_NORMAL,
GC_IDLE_CB,

15
fs/f2fs/sysfs.c
View file

@ -143,6 +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 sysfs_emit(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)
{
@ -332,13 +338,8 @@ static ssize_t f2fs_sbi_show(struct f2fs_attr *a,
return sysfs_emit(buf, "%u\n", sbi->compr_new_inode);
#endif
if (!strcmp(a->attr.name, "gc_urgent"))
return sysfs_emit(buf, "%s\n",
gc_mode_names[sbi->gc_mode]);
if (!strcmp(a->attr.name, "gc_segment_mode"))
return sysfs_emit(buf, "%s\n",
gc_mode_names[sbi->gc_segment_mode]);
return sysfs_emit(buf, "%u\n", sbi->gc_segment_mode);
if (!strcmp(a->attr.name, "gc_reclaimed_segments")) {
return sysfs_emit(buf, "%u\n",
@ -844,6 +845,7 @@ 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);
@ -926,6 +928,7 @@ static struct attribute *f2fs_attrs[] = {
ATTR_LIST(discard_granularity),
ATTR_LIST(max_ordered_discard),
ATTR_LIST(pending_discard),
ATTR_LIST(gc_mode),
ATTR_LIST(ipu_policy),
ATTR_LIST(min_ipu_util),
ATTR_LIST(min_fsync_blocks),