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From: Coly Li <colyli@suse.de>
To: axboe@kernel.dk
Cc: linux-block@vger.kernel.org, linux-bcache@vger.kernel.org,
	Coly Li <colyli@suse.de>
Subject: [PATCH 10/10] bcache: avoid NULL checking to c->root in run_cache_set()
Date: Mon, 20 Nov 2023 13:25:03 +0800	[thread overview]
Message-ID: <20231120052503.6122-11-colyli@suse.de> (raw)
In-Reply-To: <20231120052503.6122-1-colyli@suse.de>

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>
---
 drivers/md/bcache/super.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/md/bcache/super.c b/drivers/md/bcache/super.c
index c7ecc7058d77..bfe1685dbae5 100644
--- a/drivers/md/bcache/super.c
+++ b/drivers/md/bcache/super.c
@@ -2018,7 +2018,7 @@ 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);
-- 
2.35.3


  parent reply	other threads:[~2023-11-20  5:44 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-11-20  5:24 [PATCH 00/10] bcache-next 20231120 Coly Li
2023-11-20  5:24 ` [PATCH 01/10] bcache: avoid oversize memory allocation by small stripe_size Coly Li
2023-11-20  5:24 ` [PATCH 02/10] bcache: check return value from btree_node_alloc_replacement() Coly Li
2023-11-20  5:24 ` [PATCH 03/10] bcache: remove redundant assignment to variable cur_idx Coly Li
2023-11-20  5:24 ` [PATCH 04/10] bcache: prevent potential division by zero error Coly Li
2023-11-20  5:24 ` [PATCH 05/10] bcache: fixup init dirty data errors Coly Li
2023-11-20  5:24 ` [PATCH 06/10] bcache: fixup lock c->root error Coly Li
2023-11-20  5:25 ` [PATCH 07/10] bcache: fixup multi-threaded bch_sectors_dirty_init() wake-up race Coly Li
2023-11-20  5:25 ` [PATCH 08/10] bcache: replace a mistaken IS_ERR() by IS_ERR_OR_NULL() in btree_gc_coalesce() Coly Li
2023-11-20  5:25 ` [PATCH 09/10] bcache: add code comments for bch_btree_node_get() and __bch_btree_node_alloc() Coly Li
2023-11-20  5:25 ` Coly Li [this message]
2023-11-20 16:18 ` [PATCH 00/10] bcache-next 20231120 Jens Axboe

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