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| author | Shuoran Liu <liushuoran@huawei.com> | 2016-01-27 02:57:30 +0100 |
|---|---|---|
| committer | Jaegeuk Kim <jaegeuk@kernel.org> | 2016-02-23 01:07:23 +0100 |
| commit | 8f1dbbbbdfe9bada7e2f8041e07c6373f787c043 (patch) | |
| tree | 25fb006ca5bc2f960722210241c0f9e14af9c0d1 /Documentation/ABI | |
| parent | f2fs: give scheduling point in shrinking path (diff) | |
| download | linux-8f1dbbbbdfe9bada7e2f8041e07c6373f787c043.tar.xz linux-8f1dbbbbdfe9bada7e2f8041e07c6373f787c043.zip | |
f2fs: introduce lifetime write IO statistics
This patch introduces lifetime IO write statistics exposed to the sysfs interface.
The write IO amount is obtained from block layer, accumulated in the file system and
stored in the hot node summary of checkpoint.
Signed-off-by: Shuoran Liu <liushuoran@huawei.com>
Signed-off-by: Pengyang Hou <houpengyang@huawei.com>
[Jaegeuk Kim: add sysfs documentation]
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Diffstat (limited to 'Documentation/ABI')
| -rw-r--r-- | Documentation/ABI/testing/sysfs-fs-f2fs | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/Documentation/ABI/testing/sysfs-fs-f2fs b/Documentation/ABI/testing/sysfs-fs-f2fs index 523cb9d4e272..a809f6005f14 100644 --- a/Documentation/ABI/testing/sysfs-fs-f2fs +++ b/Documentation/ABI/testing/sysfs-fs-f2fs @@ -106,3 +106,9 @@ Description: Controls dirty nat entries ratio threshold, if current ratio exceeds configured threshold, checkpoint will be triggered for flushing dirty nat entries. + +What: /sys/fs/f2fs/<disk>/lifetime_write_kbytes +Date: January 2016 +Contact: "Shuoran Liu" <liushuoran@huawei.com> +Description: + Shows total written kbytes issued to disk. |