f2fs: shrink node_write lock coverage

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- to avoid race between checkpoint and quota file writeback, it
just needs to hold read lock of node_write in writeback path.
- node_write lock has covered all LFS data write paths, it's not
necessary, we only need to hold node_write lock at write path of
quota file.

This refactors commit ca7f76e680 ("f2fs: fix wrong discard space").

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

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Chao Yu 2020-06-18 14:36:23 +08:00 • committed by Jaegeuk Kim

parent fa6795552a

commit 79963d967b

3 changed files with 27 additions and 14 deletions

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18

fs/f2fs/compress.c

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12

fs/f2fs/data.c

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11

fs/f2fs/segment.c

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