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 <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2017-08-23 18:23:24 +08:00 · 2017-08-23 18:23:24 +08:00 · 73ac2f4e82
parent 01983c715a
commit 73ac2f4e82
1 changed files with 3 additions and 0 deletions
--- 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)