zygo: btrfs: only clean one snapshot per run of cleaner thread

(cherry picked from commit 5d2b6ba5af2c9e9b3aa2a7b980995643ea65855b)
(cherry picked from commit 18d15cd042c6390774524f9b8051b840cda24706)

diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c
index 49f0f349a0ed54a2d62b8e204901867ff331f3dc..1644273db0b119a6e30d748b776a9f4c696be158 100644 (file)
--- a/fs/btrfs/disk-io.c
+++ b/fs/btrfs/disk-io.c
@@ -1710,7 +1710,7 @@ static int cleaner_kthread(void *arg)
 
                btrfs_run_delayed_iputs(fs_info);
 
-               again = btrfs_clean_one_deleted_snapshot(root);
+               btrfs_clean_one_deleted_snapshot(root);
                mutex_unlock(&fs_info->cleaner_mutex);
 
                /*