From 73ac2f4e8256b9605c84364011322f015b31f499 Mon Sep 17 00:00:00 2001 From: Chao Yu Date: Wed, 23 Aug 2017 18:23:24 +0800 Subject: [PATCH] f2fs: fix to avoid race in between aio and gc 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 Signed-off-by: Jaegeuk Kim --- fs/f2fs/gc.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/fs/f2fs/gc.c b/fs/f2fs/gc.c index 57bea2182f30..cd147e7c71e8 100644 --- a/fs/f2fs/gc.c +++ b/fs/f2fs/gc.c @@ -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) -- 2.20.1