bcache: avoid NULL checking to c->root in run_cache_set()

[ Upstream commit 3eba5e0b2422aec3c9e79822029599961fdcab97 ]

In run_cache_set() after c->root returned from bch_btree_node_get(), it
is checked by IS_ERR_OR_NULL(). Indeed it is unncessary to check NULL
because bch_btree_node_get() will not return NULL pointer to caller.

This patch replaces IS_ERR_OR_NULL() by IS_ERR() for the above reason.

Signed-off-by: Coly Li <colyli@suse.de>
Link: https://lore.kernel.org/r/20231120052503.6122-11-colyli@suse.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/md/bcache/super.c b/drivers/md/bcache/super.c
index 93791e4..1e677af 100644 (file)
--- a/drivers/md/bcache/super.c
+++ b/drivers/md/bcache/super.c
@@ -2017,7 +2017,7 @@ static int run_cache_set(struct cache_set *c)
                c->root = bch_btree_node_get(c, NULL, k,
                                             j->btree_level,
                                             true, NULL);
-               if (IS_ERR_OR_NULL(c->root))
+               if (IS_ERR(c->root))
                        goto err;
 
                list_del_init(&c->root->list);