f2fs: avoid race in between GC and block exchange

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During block exchange in {insert,collapse,move}_range, page-block mapping
is unstable due to mapping moving or recovery, so there should be no
concurrent cache read operation rely on such mapping, nor cache write
operation to mess up block exchange.

So this patch let background GC be aware of that.

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

...

This commit is contained in:

Chao Yu 2017-11-03 10:21:05 +08:00 • committed by Jaegeuk Kim

parent f6986ede80

commit bb06664a53

2 changed files with 28 additions and 5 deletions

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26

fs/f2fs/file.c

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7

fs/f2fs/gc.c

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