diff options
Diffstat (limited to 'fs/btrfs/transaction.c')
| -rw-r--r-- | fs/btrfs/transaction.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/fs/btrfs/transaction.c b/fs/btrfs/transaction.c index 74bc3338418b..e8e5b5a10719 100644 --- a/fs/btrfs/transaction.c +++ b/fs/btrfs/transaction.c @@ -82,6 +82,12 @@ void btrfs_put_transaction(struct btrfs_transaction *transaction) static void clear_btree_io_tree(struct extent_io_tree *tree) { spin_lock(&tree->lock); + /* + * Do a single barrier for the waitqueue_active check here, the state + * of the waitqueue should not change once clear_btree_io_tree is + * called. + */ + smp_mb(); while (!RB_EMPTY_ROOT(&tree->state)) { struct rb_node *node; struct extent_state *state; |