f2fs: fix to search whole dirty segmap when get_victim

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In ->get_victim we get max_search value from dirty_i->nr_dirty without
protection of seglist_lock, after that, nr_dirty can be increased/decreased
before we hold seglist_lock lock.
Then in main loop we attempt to traverse all dirty section one time to find
victim section, but it's not accurate to use max_search as the total loop count,
because we might lose checking several sections or check sections redundantly
for the case of nr_dirty are increased or decreased previously.

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

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Chao Yu 2014-09-15 18:05:44 +08:00 • committed by Jaegeuk Kim

parent 26666c8a43

commit 210f41bc04

1 changed files with 2 additions and 2 deletions

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fs/f2fs/gc.c

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