From: Josef Bacik <josef@toxicpanda.com>
Date: Fri, 29 Sep 2017 15:44:05 -0400
Subject: btrfs: add assertions for releasing trans handle reservations
Git-commit: bf2681cb94d13d91326fc098ca98620b595a9d6b
Patch-mainline: v4.15-rc1
References: bsc#1165949
These are useful for debugging problems where we mess with
trans->block_rsv to make sure we're not screwing something up.
Signed-off-by: Josef Bacik <jbacik@fb.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Acked-by: Nikolay Borisov <nborisov@suse.com>
---
fs/btrfs/extent-tree.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
index 423d89145bac..4f874d02f310 100644
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -5823,12 +5823,15 @@ static void release_global_block_rsv(struct btrfs_fs_info *fs_info)
void btrfs_trans_release_metadata(struct btrfs_trans_handle *trans,
struct btrfs_fs_info *fs_info)
{
- if (!trans->block_rsv)
+ if (!trans->block_rsv) {
+ ASSERT(!trans->bytes_reserved);
return;
+ }
if (!trans->bytes_reserved)
return;
+ ASSERT(trans->block_rsv == &fs_info->trans_block_rsv);
trace_btrfs_space_reservation(fs_info, "transaction",
trans->transid, trans->bytes_reserved, 0);
btrfs_block_rsv_release(fs_info, trans->block_rsv,