From: Zheng Wang zyytlz.wz@163.com
commit 028ddcac477b691dd9205c92f991cc15259d033e upstream.
Due to the previous fix of __bch_btree_node_alloc, the return value will never be a NULL pointer. So IS_ERR is enough to handle the failure situation. Fix it by replacing IS_ERR_OR_NULL check by an IS_ERR check.
Fixes: cafe56359144 ("bcache: A block layer cache") Cc: stable@vger.kernel.org Signed-off-by: Zheng Wang zyytlz.wz@163.com Signed-off-by: Coly Li colyli@suse.de Link: https://lore.kernel.org/r/20230615121223.22502-5-colyli@suse.de Signed-off-by: Jens Axboe axboe@kernel.dk Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/md/bcache/btree.c | 10 +++++----- drivers/md/bcache/super.c | 4 ++-- 2 files changed, 7 insertions(+), 7 deletions(-)
--- a/drivers/md/bcache/btree.c +++ b/drivers/md/bcache/btree.c @@ -1138,7 +1138,7 @@ static struct btree *btree_node_alloc_re { struct btree *n = bch_btree_node_alloc(b->c, op, b->level, b->parent);
- if (!IS_ERR_OR_NULL(n)) { + if (!IS_ERR(n)) { mutex_lock(&n->write_lock); bch_btree_sort_into(&b->keys, &n->keys, &b->c->sort); bkey_copy_key(&n->key, &b->key); @@ -1340,7 +1340,7 @@ static int btree_gc_coalesce(struct btre memset(new_nodes, 0, sizeof(new_nodes)); closure_init_stack(&cl);
- while (nodes < GC_MERGE_NODES && !IS_ERR_OR_NULL(r[nodes].b)) + while (nodes < GC_MERGE_NODES && !IS_ERR(r[nodes].b)) keys += r[nodes++].keys;
blocks = btree_default_blocks(b->c) * 2 / 3; @@ -1352,7 +1352,7 @@ static int btree_gc_coalesce(struct btre
for (i = 0; i < nodes; i++) { new_nodes[i] = btree_node_alloc_replacement(r[i].b, NULL); - if (IS_ERR_OR_NULL(new_nodes[i])) + if (IS_ERR(new_nodes[i])) goto out_nocoalesce; }
@@ -1487,7 +1487,7 @@ out_nocoalesce: bch_keylist_free(&keylist);
for (i = 0; i < nodes; i++) - if (!IS_ERR_OR_NULL(new_nodes[i])) { + if (!IS_ERR(new_nodes[i])) { btree_node_free(new_nodes[i]); rw_unlock(true, new_nodes[i]); } @@ -1669,7 +1669,7 @@ static int bch_btree_gc_root(struct btre if (should_rewrite) { n = btree_node_alloc_replacement(b, NULL);
- if (!IS_ERR_OR_NULL(n)) { + if (!IS_ERR(n)) { bch_btree_node_write_sync(n);
bch_btree_set_root(n); --- a/drivers/md/bcache/super.c +++ b/drivers/md/bcache/super.c @@ -1724,7 +1724,7 @@ static void cache_set_flush(struct closu if (!IS_ERR_OR_NULL(c->gc_thread)) kthread_stop(c->gc_thread);
- if (!IS_ERR_OR_NULL(c->root)) + if (!IS_ERR(c->root)) list_add(&c->root->list, &c->btree_cache);
/* @@ -2088,7 +2088,7 @@ static int run_cache_set(struct cache_se
err = "cannot allocate new btree root"; c->root = __bch_btree_node_alloc(c, NULL, 0, true, NULL); - if (IS_ERR_OR_NULL(c->root)) + if (IS_ERR(c->root)) goto err;
mutex_lock(&c->root->write_lock);