From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id BD3BB269CF2; Mon, 3 Mar 2025 16:32:10 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1741019530; cv=none; b=t/MoBGDfFOB3VcTyr4ffqD+5SpzUqPhlzr+tw4iIG0aW5YXroKnFw5rPQbIjPxN34bR7qY9YEwZ+XrdcGvOx5ru8PGL7DEsvPdpdp3FO9cOwqJg16Yls7f5CMqj4bchrKFrN2z7dfJU73jswGNU1bH/rv4lXIrQyYvHz7PBKx0w= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1741019530; c=relaxed/simple; bh=FDyFc1JaM7FrQnRKj9W1IyD+VmwABk6Uqh9IFMTn7RY=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=Bb93le0mhd8L/WX0/ht+Qmqz7MP4FKSuVeuSKDd2i+pIU9o80CmYO91BFwYI1N7m4m+wSCIPb5qvM3Qajjy6mEeaFV2aeOkA3+5+cbtvU7HC0Y8uI/FuWKd8Cewp1kf39mTly3mvZhFcSWZ6MHyYmyEqxCkss9sdF0B6N/rUJYU= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=aBJu1jV2; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="aBJu1jV2" Received: by smtp.kernel.org (Postfix) with ESMTPSA id C496FC4CEE4; Mon, 3 Mar 2025 16:32:09 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1741019530; bh=FDyFc1JaM7FrQnRKj9W1IyD+VmwABk6Uqh9IFMTn7RY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=aBJu1jV2JyrK9E164EwF8cGMVSoWv8SfKrdBZ1x6mZ1EKoPx7jGHkLNs0ekhWkQIw qsNRAqwyVqO+y2cNoAqF4QNeluiZG/gj3zMke+YHRvUC79cR6T/0S68q3vQX8aCyTJ SeISgRcyWV5QYeKK8ybcAOquZeL8S3Qpd0BJdGXv4B/D/f/XzHnbVqB0CaTVgPcEWA 0ZEnhDDChHKSwQnEWs8bDgKqgM8UOgsgmI0GNgDAeVSwKahj4NldPfJD8dyokXx9K7 MmvjYFY9jDHn9MW9jZBIFqkOud28UNbKTZ2NFZ5ktV2g4Lk+hS5Kct7gHNLMaqY75n CHXkpC0nxxeYA== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Ming Lei , Guangwu Zhang , Jens Axboe , Sasha Levin , linux-block@vger.kernel.org Subject: [PATCH AUTOSEL 5.15 9/9] block: fix 'kmem_cache of name 'bio-108' already exists' Date: Mon, 3 Mar 2025 11:31:52 -0500 Message-Id: <20250303163152.3764156-9-sashal@kernel.org> X-Mailer: git-send-email 2.39.5 In-Reply-To: <20250303163152.3764156-1-sashal@kernel.org> References: <20250303163152.3764156-1-sashal@kernel.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore X-stable-base: Linux 5.15.178 Content-Transfer-Encoding: 8bit From: Ming Lei [ Upstream commit b654f7a51ffb386131de42aa98ed831f8c126546 ] Device mapper bioset often has big bio_slab size, which can be more than 1000, then 8byte can't hold the slab name any more, cause the kmem_cache allocation warning of 'kmem_cache of name 'bio-108' already exists'. Fix the warning by extending bio_slab->name to 12 bytes, but fix output of /proc/slabinfo Reported-by: Guangwu Zhang Signed-off-by: Ming Lei Link: https://lore.kernel.org/r/20250228132656.2838008-1-ming.lei@redhat.com Signed-off-by: Jens Axboe Signed-off-by: Sasha Levin --- block/bio.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/block/bio.c b/block/bio.c index 92399883bc5e1..029dba492ac2d 100644 --- a/block/bio.c +++ b/block/bio.c @@ -73,7 +73,7 @@ struct bio_slab { struct kmem_cache *slab; unsigned int slab_ref; unsigned int slab_size; - char name[8]; + char name[12]; }; static DEFINE_MUTEX(bio_slab_lock); static DEFINE_XARRAY(bio_slabs); -- 2.39.5