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f2fs: fix to avoid race in between aio and gc

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We won't wait DIO synchronously when doing AIO, so there will be potential
IO reorder in between AIO and GC, which will cause data corruption.

This patch adds inode_dio_wait to serialize aio and data GC to avoid this
issue.

Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This commit is contained in:
Chao Yu
2017-08-23 18:23:24 +08:00
committed by Jaegeuk Kim
parent 1e5c4e7c8d
commit 0520ca37ef
1 changed files with 3 additions and 0 deletions
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3
fs/f2fs/gc.c
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@@ -875,6 +875,9 @@ next_step:
continue;
}
locked = true;
/* wait for all inflight aio data */
inode_dio_wait(inode);
}
start_bidx = start_bidx_of_node(nofs, inode)