From patchwork Sat Mar 15 08:06:22 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Herbert Xu X-Patchwork-Id: 14017839 Received: from abb.hmeau.com (abb.hmeau.com [144.6.53.87]) (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 28C941DA61D; Sat, 15 Mar 2025 08:06:31 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=144.6.53.87 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1742025995; cv=none; b=VvUrAJHxB4jQFg7h79rhfAoJKgYyXqRS6VSowTKYBxoxDgeNh7fJd7qhSr88PDUCERc8Ogkdcw5kns3ykdLL75eTMhBwxWgollU92ZSgQoQFFYh6UzIfULWjpCbPfxuTdIVqy/rYVHpRWGItrcQshp2MPLZ6K0wbwS0kGUJW5EE= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1742025995; c=relaxed/simple; bh=frRL2RC728hrryZnr7gE9zXLqjd3ejjeTLlr1AE9sF0=; h=Date:From:To:Subject:Message-ID:MIME-Version:Content-Type: Content-Disposition; b=fSrSaiul431hoHVGhAl52vpHShdyaZBR0kKhaGmwmbGw+rg+wD5aoCf72H4OgE7J8afuqMV43I1B9DPqr05ysSK32+PVkk4Gq6dpdlR11a/h5R+XD4+mzqmvUERsXzp82ATJ47n1AGajwdTrcA/Nk1F2syACjDG2HcJyN2dlq0k= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=gondor.apana.org.au; spf=pass smtp.mailfrom=gondor.apana.org.au; dkim=pass (2048-bit key) header.d=hmeau.com header.i=@hmeau.com header.b=re353uBn; arc=none smtp.client-ip=144.6.53.87 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=gondor.apana.org.au Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gondor.apana.org.au Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=hmeau.com header.i=@hmeau.com header.b="re353uBn" DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=hmeau.com; s=formenos; h=Content-Type:MIME-Version:Message-ID:Subject:To:From:Date: Sender:Reply-To:Cc:Content-Transfer-Encoding:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: In-Reply-To:References:List-Id:List-Help:List-Unsubscribe:List-Subscribe: List-Post:List-Owner:List-Archive; bh=4+S15xdn2sIBMlFNTDKRwmCQsng7JkFjfLx0QlHmzUc=; b=re353uBnMsmOddNoIVfUBLHXee Llu2ynpUY0hP5KcNLMcxV54LGhKrP08gFN/Ztz9ZTI9CDZEJk3oIzbx5yULKLE7DgqCeO1XtukPPY 8D7zAi3JUr5eM0N4SbY5E6R7Y548gaYpaVkRtLqvVHhZYK+oRuDJuxquQ9OHYD9N7SwEMq+4XUdKN lCdy34Ax8s5qO5C0EpPHd4KtxlOgEPvhjMeZSlu6ANC+4SO9TBjUHjaxg16e4HDsV6WK3cxJ+v5+G cp3no4SNTUhj6TSNAiFSrAoMvAIyl4/zh0vWsoHcDsjGgO12MzUkjgZRYfPuKNnXTr+TCwUzfAVK+ NPYQ9Nzw==; Received: from loth.rohan.me.apana.org.au ([192.168.167.2]) by formenos.hmeau.com with smtp (Exim 4.96 #2 (Debian)) id 1ttMXG-006nMw-0p; Sat, 15 Mar 2025 16:06:23 +0800 Received: by loth.rohan.me.apana.org.au (sSMTP sendmail emulation); Sat, 15 Mar 2025 16:06:22 +0800 Date: Sat, 15 Mar 2025 16:06:22 +0800 From: Herbert Xu To: Andrew Morton , Linux Kernel Mailing List , Song Liu , Yu Kuai , linux-raid@vger.kernel.org Subject: [PATCH] lib/raid6: Replace custom zero page with ZERO_PAGE Message-ID: Precedence: bulk X-Mailing-List: linux-raid@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Disposition: inline Use the system-wide zero page instead of a custom zero page. Signed-off-by: Herbert Xu diff --git a/include/linux/raid/pq.h b/include/linux/raid/pq.h index 98030accf641..1460c15dea63 100644 --- a/include/linux/raid/pq.h +++ b/include/linux/raid/pq.h @@ -11,8 +11,9 @@ #ifdef __KERNEL__ #include +#include -extern const char raid6_empty_zero_page[PAGE_SIZE]; +#define raid6_empty_zero_page ((const char *)page_address(ZERO_PAGE(0))) #else /* ! __KERNEL__ */ /* Used for testing in user space */ diff --git a/lib/raid6/algos.c b/lib/raid6/algos.c index cd2e88ee1f14..03f1a8c179f7 100644 --- a/lib/raid6/algos.c +++ b/lib/raid6/algos.c @@ -18,9 +18,6 @@ #else #include #include -/* In .bss so it's zeroed */ -const char raid6_empty_zero_page[PAGE_SIZE] __attribute__((aligned(256))); -EXPORT_SYMBOL(raid6_empty_zero_page); #endif struct raid6_calls raid6_call;