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 705C626563F; Mon, 3 Mar 2025 16:31:52 +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=1741019512; cv=none; b=jnHo90/jtN+z5FLonmafaPbJTNzYR2w9ixD6w7LY/R6p/i3dDQpmA62xIQxgqfV4AdWNSkmUVluz+3Di2JzUhjLOtjPcQyTGt5rvtaUAaHz9nx1ysIMlqBMgMVP74fHOssk+W0bUSX1rXUMh2YdJUClOglv4IIre0NKHjL+tcE0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1741019512; c=relaxed/simple; bh=pamq55l0ANX25XM1RaeQViIltEvGjtHPIDspqp8l3C0=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=aXPIMGi1/cYbeXCD3PmUHYvuXUFbZSZqxesTHjvUaY/tozRwVBVG0fIa3jemPKH6WIVh2lKgNEWE6u+HHyMjxJWS280bjSNk4EKtK/rWKwjGguZjoQ6Ybq2bvwTLT7WWIMxujEBvXBq8bnVk4YT52WtcJhOJu/lSDQUTZ7eaUkk= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=Hx9JHNKh; 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="Hx9JHNKh" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 23768C4CED6; Mon, 3 Mar 2025 16:31:51 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1741019512; bh=pamq55l0ANX25XM1RaeQViIltEvGjtHPIDspqp8l3C0=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Hx9JHNKh9guHLk06mMBW4AryvAyGe3KITLAc3nSvYRAvhxM2FMFQj9fBmph1rB3Vp jEeI1yN0K/7P+2RspC8A/W+CtXqqaL8prvGHwrFRd35kzKNRZom6qjbaUSNH0bzJHQ eqRT8HQYf5OpIo9N2sEmOCq4r72o1wne7tmvukRLSXwlNN9VkCaPlcS+RemATE8HM2 fvToxLCMtE57448Mel4JqPSK79vMdYL8GgpgddYRzjiQg9T+9ZEsqCRKx4nVLdr44c iq1234kSMOCPUyLvoRMgdFz+dqRtwovD7CTn7wKRWWm/fE1gMgxe/7IoXmb5+3aaNQ RjykoI5fLR+sg== 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 6.1 9/9] block: fix 'kmem_cache of name 'bio-108' already exists' Date: Mon, 3 Mar 2025 11:31:33 -0500 Message-Id: <20250303163133.3764032-9-sashal@kernel.org> X-Mailer: git-send-email 2.39.5 In-Reply-To: <20250303163133.3764032-1-sashal@kernel.org> References: <20250303163133.3764032-1-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 6.1.129 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 3318e0022fdfd..a7323d567c798 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