xfs: return FIEMAP_EXTENT_UNKNOWN for delayed allocation extent

For FIEMAP ioctl(2), if an extent is in delayed allocation state, we need to return the FIEMAP_EXTENT_UNKNOWN flag except the FIEMAP_EXTENT_DELALLOC because its data location is unknown. Signed-off-by: Jie Liu <[email protected]> Reviewed-by: Ben Myers <[email protected]> Signed-off-by: Ben Myers <[email protected]>
kishon · Jun 19, 2013 · 635c4d0 · 635c4d0
1 parent 725eb1e
commit 635c4d0
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/fs/xfs/xfs_iops.c b/fs/xfs/xfs_iops.c
@@ -987,7 +987,8 @@ xfs_fiemap_format(
 	if (bmv->bmv_oflags & BMV_OF_PREALLOC)
 		fiemap_flags |= FIEMAP_EXTENT_UNWRITTEN;
 	else if (bmv->bmv_oflags & BMV_OF_DELALLOC) {
-		fiemap_flags |= FIEMAP_EXTENT_DELALLOC;
+		fiemap_flags |= (FIEMAP_EXTENT_DELALLOC |
+				 FIEMAP_EXTENT_UNKNOWN);
 		physical = 0;   /* no block yet */
 	}
 	if (bmv->bmv_oflags & BMV_OF_LAST)