[PATCH 7/7] Btrfs: warn if total_bytes_pinned is non-zero on unmount

[Omar Sandoval]

From: Omar Sandoval <osan...@fb.com>

Catch any future/remaining leaks or underflows of total_bytes_pinned.

Signed-off-by: Omar Sandoval <osan...@fb.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 75ad24f8d253..5fb2fb27eda6 100644
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -9860,6 +9860,7 @@ int btrfs_free_block_groups(struct btrfs_fs_info *info)
                            space_info->bytes_reserved > 0 ||
                            space_info->bytes_may_use > 0))
                        dump_space_info(info, space_info, 0, 0);
+               WARN_ON(percpu_counter_sum(&space_info->total_bytes_pinned) != 
0);
                list_del(&space_info->list);
                for (i = 0; i < BTRFS_NR_RAID_TYPES; i++) {
                        struct kobject *kobj;
-- 
2.13.0

--
To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in
the body of a message to majord...@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html