From: Kent Overstreet <kent.overstreet@gmail.com>
Date: Sat, 28 Dec 2019 01:42:06 +0000 (-0500)
Subject: bcachefs: Add an assertion to track down a heisenbug
X-Git-Tag: io_uring-6.7-2023-11-10~119^2~2212
X-Git-Url: https://git.kernel.dk/?a=commitdiff_plain;h=27b3e52388e1e6b2babb71ec17efa029139e1511;p=linux-block.git

bcachefs: Add an assertion to track down a heisenbug

Signed-off-by: Kent Overstreet <kent.overstreet@gmail.com>
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
---

diff --git a/fs/bcachefs/btree_update_interior.c b/fs/bcachefs/btree_update_interior.c
index 9e2d72bf06b2..c9be0d110c64 100644
--- a/fs/bcachefs/btree_update_interior.c
+++ b/fs/bcachefs/btree_update_interior.c
@@ -1657,6 +1657,8 @@ void __bch2_foreground_maybe_merge(struct bch_fs *c,
 	size_t sib_u64s;
 	int ret = 0;
 
+	BUG_ON(!btree_node_locked(iter, level));
+
 	closure_init_stack(&cl);
 retry:
 	BUG_ON(!btree_node_locked(iter, level));