f2fs: fix missing up_read

This patch fixes missing up_read call.

Fixes: aebcc1bd6ff9 ("f2fs: fix to do sanity check with block address in main area")
Cc: <stable@vger.kernel.org> # 4.19+
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

diff --git a/fs/f2fs/node.c b/fs/f2fs/node.c
index 3994b44541b4716dffaa1b36c065fa8244ac7a24..acb819b8fc42723516a8207f15c5d81324279a3b 100644 (file)
--- a/fs/f2fs/node.c
+++ b/fs/f2fs/node.c
@@ -1541,8 +1541,10 @@ static int __write_node_page(struct page *page, bool atomic, bool *submitted,
        }
 
        if (__is_valid_data_blkaddr(ni.blk_addr) &&
-               !f2fs_is_valid_blkaddr(sbi, ni.blk_addr, DATA_GENERIC))
+               !f2fs_is_valid_blkaddr(sbi, ni.blk_addr, DATA_GENERIC)) {
+               up_read(&sbi->node_write);
                goto redirty_out;
+       }
 
        if (atomic && !test_opt(sbi, NOBARRIER))
                fio.op_flags |= REQ_PREFLUSH | REQ_FUA;