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Diffstat (limited to 'mm')
-rw-r--r--mm/zswap.c16
1 files changed, 3 insertions, 13 deletions
diff --git a/mm/zswap.c b/mm/zswap.c
index 464179d43399..0e4a869b6fd8 100644
--- a/mm/zswap.c
+++ b/mm/zswap.c
@@ -1808,19 +1808,9 @@ void zswap_swapoff(int type)
if (!trees)
return;
- for (i = 0; i < nr_zswap_trees[type]; i++) {
- struct zswap_tree *tree = trees + i;
- struct zswap_entry *entry, *n;
-
- /* walk the tree and free everything */
- spin_lock(&tree->lock);
- rbtree_postorder_for_each_entry_safe(entry, n,
- &tree->rbroot,
- rbnode)
- zswap_free_entry(entry);
- tree->rbroot = RB_ROOT;
- spin_unlock(&tree->lock);
- }
+ /* try_to_unuse() invalidated all the entries already */
+ for (i = 0; i < nr_zswap_trees[type]; i++)
+ WARN_ON_ONCE(!RB_EMPTY_ROOT(&trees[i].rbroot));
kvfree(trees);
nr_zswap_trees[type] = 0;