From: Qu Wenruo <wqu@suse.com>
Date: Mon, 29 Apr 2019 14:03:32 +0800
Subject: btrfs: extent-tree: Add lockdep assert when updating space info
Git-commit: 0185f364cb65855cdf5dfd0de11f8f9622940250
Patch-mainline: v5.3-rc1
References: bsc#1165949
Just add a safe net for btrfs_space_info member updating.
Signed-off-by: Qu Wenruo <wqu@suse.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 | 1 +
1 file changed, 1 insertion(+)
diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
index af73264e33a5..f37daddbeabe 100644
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -58,6 +58,7 @@ enum {
static inline void update_##name(struct btrfs_space_info *sinfo, \
s64 bytes) \
{ \
+ lockdep_assert_held(&sinfo->lock); \
if (bytes < 0 && sinfo->name < -bytes) { \
WARN_ON(1); \
sinfo->name = 0; \