diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c
index 925522756e285..b51c8b783f40a 100644
--- a/fs/btrfs/ioctl.c
+++ b/fs/btrfs/ioctl.c
@@ -1629,6 +1629,7 @@ int btrfs_defrag_file(struct inode *inode, struct file_ra_state *ra,
 			ret = 0;
 			break;
 		}
+		cond_resched();
 	}
 
 	if (ra_allocated)