f2fs: fix to wait page writeback during revoking atomic write

[ Upstream commit e5e5732d8120654159254c16834bc8663d8be124 ]

After revoking atomic write, related LBA can be reused by others, so we
need to wait page writeback before reusing the LBA, in order to avoid
interference between old atomic written in-flight IO and new IO.

Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c
index 2793b65a1c1cf826d39318afbb9a4730808292e7..7c05bd4222b2921ff6ee749a585be810f28a5927 100644 (file)
--- a/fs/f2fs/segment.c
+++ b/fs/f2fs/segment.c
@@ -225,6 +225,8 @@ static int __revoke_inmem_pages(struct inode *inode,
 
                lock_page(page);
 
+               f2fs_wait_on_page_writeback(page, DATA, true);
+
                if (recover) {
                        struct dnode_of_data dn;
                        struct node_info ni;