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| author | Zhiguo Niu <zhiguo.niu@unisoc.com> | 2023-12-20 09:59:58 +0800 |
|---|---|---|
| committer | Jaegeuk Kim <jaegeuk@kernel.org> | 2023-12-26 13:07:26 -0800 |
| commit | c3c2d45b9050180974e35ec8672c6e788adc236a (patch) | |
| tree | 0b7964512bbfb64b8aac44b20062853544672d99 | |
| parent | 19ec1d31fa56255ebf866a9e7540d3b4d6069db6 (diff) | |
| download | lwn-c3c2d45b9050180974e35ec8672c6e788adc236a.tar.gz lwn-c3c2d45b9050180974e35ec8672c6e788adc236a.zip | |
f2fs: show more discard status by sysfs
The current pending_discard attr just only shows the discard_cmd_cnt
information. More discard status can be shown so that we can check
them through sysfs when needed.
Signed-off-by: Zhiguo Niu <zhiguo.niu@unisoc.com>
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
| -rw-r--r-- | Documentation/ABI/testing/sysfs-fs-f2fs | 15 | ||||
| -rw-r--r-- | fs/f2fs/sysfs.c | 34 |
2 files changed, 49 insertions, 0 deletions
diff --git a/Documentation/ABI/testing/sysfs-fs-f2fs b/Documentation/ABI/testing/sysfs-fs-f2fs index 4f1d4e636d67..99fa87a43926 100644 --- a/Documentation/ABI/testing/sysfs-fs-f2fs +++ b/Documentation/ABI/testing/sysfs-fs-f2fs @@ -498,6 +498,21 @@ Description: Show status of f2fs checkpoint in real time. CP_RESIZEFS_FLAG 0x00004000 =============================== ============================== +What: /sys/fs/f2fs/<disk>/stat/issued_discard +Date: December 2023 +Contact: "Zhiguo Niu" <zhiguo.niu@unisoc.com> +Description: Shows the number of issued discard. + +What: /sys/fs/f2fs/<disk>/stat/queued_discard +Date: December 2023 +Contact: "Zhiguo Niu" <zhiguo.niu@unisoc.com> +Description: Shows the number of queued discard. + +What: /sys/fs/f2fs/<disk>/stat/undiscard_blks +Date: December 2023 +Contact: "Zhiguo Niu" <zhiguo.niu@unisoc.com> +Description: Shows the total number of undiscard blocks. + What: /sys/fs/f2fs/<disk>/ckpt_thread_ioprio Date: January 2021 Contact: "Daeho Jeong" <daehojeong@google.com> diff --git a/fs/f2fs/sysfs.c b/fs/f2fs/sysfs.c index 8c8424b05fc7..a7ec55c7bb20 100644 --- a/fs/f2fs/sysfs.c +++ b/fs/f2fs/sysfs.c @@ -143,6 +143,33 @@ static ssize_t pending_discard_show(struct f2fs_attr *a, &SM_I(sbi)->dcc_info->discard_cmd_cnt)); } +static ssize_t issued_discard_show(struct f2fs_attr *a, + struct f2fs_sb_info *sbi, char *buf) +{ + if (!SM_I(sbi)->dcc_info) + return -EINVAL; + return sysfs_emit(buf, "%llu\n", (unsigned long long)atomic_read( + &SM_I(sbi)->dcc_info->issued_discard)); +} + +static ssize_t queued_discard_show(struct f2fs_attr *a, + struct f2fs_sb_info *sbi, char *buf) +{ + if (!SM_I(sbi)->dcc_info) + return -EINVAL; + return sysfs_emit(buf, "%llu\n", (unsigned long long)atomic_read( + &SM_I(sbi)->dcc_info->queued_discard)); +} + +static ssize_t undiscard_blks_show(struct f2fs_attr *a, + struct f2fs_sb_info *sbi, char *buf) +{ + if (!SM_I(sbi)->dcc_info) + return -EINVAL; + return sysfs_emit(buf, "%u\n", + SM_I(sbi)->dcc_info->undiscard_blks); +} + static ssize_t gc_mode_show(struct f2fs_attr *a, struct f2fs_sb_info *sbi, char *buf) { @@ -1213,9 +1240,16 @@ ATTRIBUTE_GROUPS(f2fs_feat); F2FS_GENERAL_RO_ATTR(sb_status); F2FS_GENERAL_RO_ATTR(cp_status); +F2FS_GENERAL_RO_ATTR(issued_discard); +F2FS_GENERAL_RO_ATTR(queued_discard); +F2FS_GENERAL_RO_ATTR(undiscard_blks); + static struct attribute *f2fs_stat_attrs[] = { ATTR_LIST(sb_status), ATTR_LIST(cp_status), + ATTR_LIST(issued_discard), + ATTR_LIST(queued_discard), + ATTR_LIST(undiscard_blks), NULL, }; ATTRIBUTE_GROUPS(f2fs_stat); |