f2fs: split discard policy

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There are many different scenarios such as fstrim, umount, urgent or
background where we will issue discards, actually, they need use
different policy in aspect of io aware, discard granularity, delay
interval and so on. But now they just share one common discard policy,
so there will be race when changing policy in between these scenarios,
the interference of changing discard policy will be very serious.

This patch changes to split discard policy for different scenarios.

Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

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Chao Yu 2017-10-04 09:08:34 +08:00 • committed by Jaegeuk Kim

parent ecc9aa00db

commit 78997b569f

4 changed files with 88 additions and 96 deletions

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17

fs/f2fs/f2fs.h

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149

fs/f2fs/segment.c

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5

fs/f2fs/segment.h

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13

fs/f2fs/sysfs.c

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