ext4: return FIEMAP_EXTENT_UNKNOWN for delalloc extents

Return the FIEMAP_EXTENT_UNKNOWN flag as well except the
FIEMAP_EXTENT_DELALLOC because the data location of an
delayed allocation extent is unknown.

Signed-off-by: Jie Liu <jeff.liu@oracle.com>

diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c
index d04f40936397d61893a5e8282cb97e628cf36a84..51e41687f51e81613a3add41712c782a171878db 100644 (file)
--- a/fs/ext4/extents.c
+++ b/fs/ext4/extents.c
@@ -2125,7 +2125,8 @@ static int ext4_fill_fiemap_extents(struct inode *inode,
                next_del = ext4_find_delayed_extent(inode, &es);
                if (!exists && next_del) {
                        exists = 1;
-                       flags |= FIEMAP_EXTENT_DELALLOC;
+                       flags |= (FIEMAP_EXTENT_DELALLOC |
+                                 FIEMAP_EXTENT_UNKNOWN);
                }
                up_read(&EXT4_I(inode)->i_data_sem);