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| author | Jaegeuk Kim <jaegeuk@kernel.org> | 2021-11-29 19:36:12 +0100 |
|---|---|---|
| committer | Jaegeuk Kim <jaegeuk@kernel.org> | 2021-12-11 00:48:32 +0100 |
| commit | ae2e2804caa120af188b0d7b08936c7ac5c7d8fe (patch) | |
| tree | 9848095a4c2585374d947761278d4af4df887034 /fs | |
| parent | f2fs: support POSIX_FADV_DONTNEED drop compressed page cache (diff) | |
| download | linux-ae2e2804caa120af188b0d7b08936c7ac5c7d8fe.tar.xz linux-ae2e2804caa120af188b0d7b08936c7ac5c7d8fe.zip | |
f2fs: show number of pending discard commands
This information can be used to check how much time we need to give to issue
all the discard commands.
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/f2fs/sysfs.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/fs/f2fs/sysfs.c b/fs/f2fs/sysfs.c index 7d289249cd7e..47c950f65b6f 100644 --- a/fs/f2fs/sysfs.c +++ b/fs/f2fs/sysfs.c @@ -118,6 +118,15 @@ static ssize_t sb_status_show(struct f2fs_attr *a, return sprintf(buf, "%lx\n", sbi->s_flag); } +static ssize_t pending_discard_show(struct f2fs_attr *a, + struct f2fs_sb_info *sbi, char *buf) +{ + if (!SM_I(sbi)->dcc_info) + return -EINVAL; + return sprintf(buf, "%llu\n", (unsigned long long)atomic_read( + &SM_I(sbi)->dcc_info->discard_cmd_cnt)); +} + static ssize_t features_show(struct f2fs_attr *a, struct f2fs_sb_info *sbi, char *buf) { @@ -744,6 +753,7 @@ F2FS_GENERAL_RO_ATTR(unusable); F2FS_GENERAL_RO_ATTR(encoding); F2FS_GENERAL_RO_ATTR(mounted_time_sec); F2FS_GENERAL_RO_ATTR(main_blkaddr); +F2FS_GENERAL_RO_ATTR(pending_discard); #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); @@ -812,6 +822,7 @@ static struct attribute *f2fs_attrs[] = { ATTR_LIST(main_blkaddr), ATTR_LIST(max_small_discards), ATTR_LIST(discard_granularity), + ATTR_LIST(pending_discard), ATTR_LIST(batched_trim_sections), ATTR_LIST(ipu_policy), ATTR_LIST(min_ipu_util), |