This is a note to let you know that I've just added the patch titled
bcache: avoid NULL checking to c->root in run_cache_set()
to the 5.4-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
bcache-avoid-null-checking-to-c-root-in-run_cache_se.patch
and it can be found in the queue-5.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 7e4b9ee33cd12e8f154e9b3570e82258fc5658fb
Author: Coly Li <colyli@xxxxxxx>
Date: Mon Nov 20 13:25:03 2023 +0800
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@xxxxxxx>
Link: https://lore.kernel.org/r/20231120052503.6122-11-colyli@xxxxxxx
Signed-off-by: Jens Axboe <axboe@xxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/md/bcache/super.c b/drivers/md/bcache/super.c
index d5f57a9551dda..5d1a4eb816694 100644
--- a/drivers/md/bcache/super.c
+++ b/drivers/md/bcache/super.c
@@ -1908,7 +1908,7 @@ 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);
