f2fs: introduce a batched trim

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This patch introduces a batched trimming feature, which submits split discard
commands.

This is to avoid long latency due to huge trim commands.
If fstrim was triggered ranging from 0 to the end of device, we should lock
all the checkpoint-related mutexes, resulting in very long latency.

Reviewed-by: Chao Yu <chao2.yu@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

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This commit is contained in:

Jaegeuk Kim 2015-01-26 17:41:23 -08:00

parent 487261f39b

commit bba681cbb2

5 changed files with 31 additions and 5 deletions

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6

Documentation/ABI/testing/sysfs-fs-f2fs

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4

Documentation/filesystems/f2fs.txt

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7

fs/f2fs/f2fs.h

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17

fs/f2fs/segment.c

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2

fs/f2fs/super.c

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