[PATCH v5 7/8] btrfs: stop running all delayed refs during snapshot

[Josef Bacik]

This was added in commit 361048f586f5 ("Btrfs: fix full backref problem
when inserting shared block reference") to address a problem where we
hit the following BUG_ON() in alloc_reserved_tree_block

        if (node->type == BTRFS_SHARED_BLOCK_REF_KEY) {
                BUG_ON(!(flags & BTRFS_BLOCK_FLAG_FULL_BACKREF));

However this BUG_ON() is bogus, and was removed by

  btrfs: remove bogus BUG_ON in alloc_reserved_tree_block

We no longer need to run delayed refs because of this, and can remove
this flushing here.

Signed-off-by: Josef Bacik <jo...@toxicpanda.com>
---
 fs/btrfs/transaction.c | 6 ------
 1 file changed, 6 deletions(-)

diff --git a/fs/btrfs/transaction.c b/fs/btrfs/transaction.c
index 5738763c514b..b3c9da5833db 100644
--- a/fs/btrfs/transaction.c
+++ b/fs/btrfs/transaction.c
@@ -1750,12 +1750,6 @@ static noinline int create_pending_snapshot(struct 
btrfs_trans_handle *trans,
                }
        }
 
-       ret = btrfs_run_delayed_refs(trans, (unsigned long)-1);
-       if (ret) {
-               btrfs_abort_transaction(trans, ret);
-               goto fail;
-       }
-
 fail:
        pending->error = ret;
 dir_item_existed:
-- 
2.26.2