ocfs2: Read from an unwritten extent returns zeros

Return an optional extent flags field from our lookup functions and wire up
callers to treat unwritten regions as holes for the purpose of returning
zeros to the user.

Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>

1 files changed, 2 insertions, 1 deletions

diff --git a/fs/ocfs2/namei.c b/fs/ocfs2/namei.c
index 5755e0748256..395859edb51f 100644
--- a/fs/ocfs2/namei.c
+++ b/fs/ocfs2/namei.c
@@ -1511,7 +1511,8 @@ static int ocfs2_create_symlink_data(struct ocfs2_super *osb,
                 goto bail;
         }
 
-        status = ocfs2_extent_map_get_blocks(inode, 0, &p_blkno, &p_blocks);
+        status = ocfs2_extent_map_get_blocks(inode, 0, &p_blkno, &p_blocks,
+                                             NULL);
         if (status < 0) {
                 mlog_errno(status);
                 goto bail;