[PATCH] f2fs: fix to wait on page writeback before updating page

[Chao Yu]

From: Chao Yu <yuchao0@xxxxxxxxxx>

In error path of f2fs_move_rehashed_dirents, inode page could be writeback
state, so we should wait on inode page writeback before updating it.

Signed-off-by: Chao Yu <yuchao0@xxxxxxxxxx>
---
 fs/f2fs/inline.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/fs/f2fs/inline.c b/fs/f2fs/inline.c
index a6d6d340211a..d0d430ad79ff 100644
--- a/fs/f2fs/inline.c
+++ b/fs/f2fs/inline.c
@@ -477,6 +477,7 @@ static int f2fs_move_rehashed_dirents(struct inode *dir, struct page *ipage,
 	return 0;
 recover:
 	lock_page(ipage);
+	f2fs_wait_on_page_writeback(ipage, NODE, true);
 	memcpy(inline_dentry, backup_dentry, MAX_INLINE_DATA(dir));
 	f2fs_i_depth_write(dir, 0);
 	f2fs_i_size_write(dir, MAX_INLINE_DATA(dir));
-- 
2.16.2.17.g38e79b1fd