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| author | Daeho Jeong <daehojeong@google.com> | 2021-01-21 14:45:29 +0100 |
|---|---|---|
| committer | Jaegeuk Kim <jaegeuk@kernel.org> | 2021-02-03 22:03:58 +0100 |
| commit | e65920661708b7c0f3db45c9cd5d0095034ee37f (patch) | |
| tree | 93a95df64ff3478f1e939e9ea8ec2202c595e303 /Documentation | |
| parent | f2fs: introduce checkpoint_merge mount option (diff) | |
| download | linux-e65920661708b7c0f3db45c9cd5d0095034ee37f.tar.xz linux-e65920661708b7c0f3db45c9cd5d0095034ee37f.zip | |
f2fs: add ckpt_thread_ioprio sysfs node
Added "ckpt_thread_ioprio" sysfs node to give a way to change checkpoint
merge daemon's io priority. Its default value is "be,3", which means
"BE" I/O class and I/O priority "3". We can select the class between "rt"
and "be", and set the I/O priority within valid range of it.
"," delimiter is necessary in between I/O class and priority number.
Signed-off-by: Daeho Jeong <daehojeong@google.com>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/ABI/testing/sysfs-fs-f2fs | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/Documentation/ABI/testing/sysfs-fs-f2fs b/Documentation/ABI/testing/sysfs-fs-f2fs index 362803901614..cbeac1bebe2f 100644 --- a/Documentation/ABI/testing/sysfs-fs-f2fs +++ b/Documentation/ABI/testing/sysfs-fs-f2fs @@ -400,3 +400,12 @@ Description: Show status of f2fs superblock in real time. 0x1000 SBI_QUOTA_NEED_REPAIR quota file may be corrupted 0x2000 SBI_IS_RESIZEFS resizefs is in process ====== ===================== ================================= + +What: /sys/fs/f2fs/<disk>/ckpt_thread_ioprio +Date: January 2021 +Contact: "Daeho Jeong" <daehojeong@google.com> +Description: Give a way to change checkpoint merge daemon's io priority. + Its default value is "be,3", which means "BE" I/O class and + I/O priority "3". We can select the class between "rt" and "be", + and set the I/O priority within valid range of it. "," delimiter + is necessary in between I/O class and priority number. |