ceph: prevent i_version from going back

inode info from non-auth can be stale. Signed-off-by: "Yan, Zheng" <[email protected]> Signed-off-by: Ilya Dryomov <[email protected]>
raspberrypi · Jun 4, 2018 · aae1a44 · aae1a44
1 parent fa46674
commit aae1a44
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/fs/ceph/inode.c b/fs/ceph/inode.c
@@ -889,7 +889,8 @@ static int fill_inode(struct inode *inode, struct page *locked_page,
 	}
 
 	/* finally update i_version */
-	ci->i_version = le64_to_cpu(info->version);
+	if (le64_to_cpu(info->version) > ci->i_version)
+		ci->i_version = le64_to_cpu(info->version);
 
 	inode->i_mapping->a_ops = &ceph_aops;