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 AFAFE27C15A; Mon, 3 Mar 2025 16:32:36 +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=1741019556; cv=none; b=LA7ScH1fidjJpfkY1Rh4qj6JzTRItdbtxKlg2yQN295TVhq5U+BW3yLodmlnJ0pMcx15YPj6Xc89Id5rEbxmoZ+ePWej+xl+lW2ATThkh8xWFZKwKQBt0r5Ma6VsrCdzdJvz9eedjlVguOhu9OUmEN5b+GPoQOcMZluN7N9t54I= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1741019556; c=relaxed/simple; bh=BjovHo68oZYSOarCRlTU07vBmWsubBFMlJwRwXudCBw=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=k0X0jxj2fxSnsaaZCjce88eKnQvzNO6hgJW1nErGGPWLcUmVfclcYn9zEgcRvSgQVwE0UwcM6p3Xj823Sye6mws8qtw46tVgQhK4QDHwmQXsKzz3QPgRpeYZrvPOj8Dvrxg/nqBwF1bF8DP5RVhemWxl2hE/z8UcggN27K5j30E= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=jQ444xxJ; 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="jQ444xxJ" Received: by smtp.kernel.org (Postfix) with ESMTPSA id BB74EC4CEE4; Mon, 3 Mar 2025 16:32:35 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1741019556; bh=BjovHo68oZYSOarCRlTU07vBmWsubBFMlJwRwXudCBw=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=jQ444xxJ6/gSE93dA042mF786W6Qvu9hi3Gz8TOR/lgPLL6Tks/vAgiqf0nZE+U+Y OZ6vSvjK+ovXCi140mmlldh8TVqP216ULl3N3e8+ySc7Gn/LfWNgk2PaixLGA9v9YD V4n3xvmrZYHKRd9ifut0b8LhJcTdSajtifQ6RN4ab+cSJy4KeZlMV+DJS98kbOtN7O sN/718DRYnAFpF4p2d69EswmMVN/uI0WQ6BHZrXcFxwanSpGDNavP0lMC5cWy8Gz9j I0Orsw45hGMqSfq3Gwm74SSXG9tMoy0VsswWsHpTbak/ddO5kzn5yoLzVS7wJDi96H hdQlOak0ystIw== 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 5.4 4/4] block: fix 'kmem_cache of name 'bio-108' already exists' Date: Mon, 3 Mar 2025 11:32:27 -0500 Message-Id: <20250303163228.3764394-4-sashal@kernel.org> X-Mailer: git-send-email 2.39.5 In-Reply-To: <20250303163228.3764394-1-sashal@kernel.org> References: <20250303163228.3764394-1-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 5.4.290 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 e3d3e75c97e03..239f6bd421a80 100644 --- a/block/bio.c +++ b/block/bio.c @@ -53,7 +53,7 @@ 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 struct bio_slab *bio_slabs; -- 2.39.5