f2fs: add ckpt_thread_ioprio sysfs node

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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>

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Daeho Jeong 2021-01-21 22:45:29 +09:00 • committed by Jaegeuk Kim

parent 261eeb9c15

commit e659206617

4 changed files with 67 additions and 1 deletions

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9

Documentation/ABI/testing/sysfs-fs-f2fs

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3

fs/f2fs/checkpoint.c

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1

fs/f2fs/f2fs.h

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55

fs/f2fs/sysfs.c

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