Btrfs: do not defrag a file partially

xfstests 218 complains that btrfs defrags a file partially: After: 1 Write backwards sync, but contiguous - should defrag to 1 extent Before: 10 -After: 1 +After: 2 To fix this, we need to set max_to_defrag count properly. Signed-off-by: Liu Bo <[email protected]> Signed-off-by: Chris Mason <[email protected]>
goeke · Jan 26, 2012 · 7ec31b5 · 7ec31b5
1 parent 0b48514
commit 7ec31b5
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c
@@ -1066,7 +1066,7 @@ int btrfs_defrag_file(struct inode *inode, struct file *file,
 		i = range->start >> PAGE_CACHE_SHIFT;
 	}
 	if (!max_to_defrag)
-		max_to_defrag = last_index;
+		max_to_defrag = last_index + 1;
 
 	/*
 	 * make writeback starts from i, so the defrag range can be