From patchwork Tue Jul 13 05:52:31 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 12372819 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.6 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id BDD40C07E95 for ; Tue, 13 Jul 2021 05:52:56 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 6B5C861008 for ; Tue, 13 Jul 2021 05:52:56 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 6B5C861008 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=lst.de Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 9D23F6B0096; Tue, 13 Jul 2021 01:52:56 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 95B2B6B0098; Tue, 13 Jul 2021 01:52:56 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 7D4AB6B0099; Tue, 13 Jul 2021 01:52:56 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0030.hostedemail.com [216.40.44.30]) by kanga.kvack.org (Postfix) with ESMTP id 4F80B6B0096 for ; Tue, 13 Jul 2021 01:52:56 -0400 (EDT) Received: from smtpin40.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay05.hostedemail.com (Postfix) with ESMTP id 57377181EC487 for ; Tue, 13 Jul 2021 05:52:55 +0000 (UTC) X-FDA: 78356495910.40.928893A Received: from casper.infradead.org (casper.infradead.org [90.155.50.34]) by imf25.hostedemail.com (Postfix) with ESMTP id 0E862B00029D for ; Tue, 13 Jul 2021 05:52:54 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.20170209; h=Content-Transfer-Encoding:MIME-Version: References:In-Reply-To:Message-Id:Date:Subject:Cc:To:From:Sender:Reply-To: Content-Type:Content-ID:Content-Description; bh=d8q66gZVOpTmMdIc6dC+FZOKYvaRSFF6AtytyOW/st0=; b=jIxUPdAEFPmCu55gfoYLZDhxkp /d9LbXp8yp6IYRhraQRpyhV+vKVymM35vehxoN+ZyuSAi+PaBSO19h4JulUBCkB6R1PNaGWdkpQAj JV1s3FuKQ7Cadgdkq38+iecc869DxbHovvRI+tW7UO1TBUZppiXg05m2vDe6NLXTLB584kiDUoSBM rEE+Kaf5MsYfqo1qE3puB+T9FZ3jO0OVbMyZdV5Z0CgfFrBMdtrsdHELacHWd+L7K1G0SVigXj9xj Q1V5El41xtQttd1+KU5psKdd2V2l+wfSuWrkqhitRYXiIRpbZ42eCsV7TuRhKx1O4mMkr52VCeJWR ZcuBlXkw==; Received: from [2001:4bb8:184:8b7c:e5e6:2d8f:6506:596e] (helo=localhost) by casper.infradead.org with esmtpsa (Exim 4.94.2 #2 (Red Hat Linux)) id 1m3BLU-000mbL-QU; Tue, 13 Jul 2021 05:52:42 +0000 From: Christoph Hellwig To: Andrew Morton Cc: Ira Weiny , linux-kernel@vger.kernel.org, linux-mm@kvack.org, Chaitanya Kulkarni Subject: [PATCH 2/2] mm: use kmap_local_page in memzero_page Date: Tue, 13 Jul 2021 07:52:31 +0200 Message-Id: <20210713055231.137602-3-hch@lst.de> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20210713055231.137602-1-hch@lst.de> References: <20210713055231.137602-1-hch@lst.de> MIME-Version: 1.0 X-SRS-Rewrite: SMTP reverse-path rewritten from by casper.infradead.org. See http://www.infradead.org/rpr.html X-Rspamd-Server: rspam06 X-Rspamd-Queue-Id: 0E862B00029D X-Stat-Signature: dswkzojmz6unobcdd4yd3nzxb1cg55s9 Authentication-Results: imf25.hostedemail.com; dkim=pass header.d=infradead.org header.s=casper.20170209 header.b=jIxUPdAE; spf=none (imf25.hostedemail.com: domain of BATV@casper.srs.infradead.org has no SPF policy when checking 90.155.50.34) smtp.mailfrom=BATV@casper.srs.infradead.org; dmarc=none X-HE-Tag: 1626155574-690232 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: The commit message introducing the global memzero_page explicitly mentions switching to kmap_local_page in the commit log but doesn't actually do that. Fixes: 28961998f858 ("iov_iter: lift memzero_page() to highmem.h") Signed-off-by: Christoph Hellwig Reviewed-by: Chaitanya Kulkarni Reviewed-by: Ira Weiny --- include/linux/highmem.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/include/linux/highmem.h b/include/linux/highmem.h index 8e7e50a53a12..d9a606a9fc64 100644 --- a/include/linux/highmem.h +++ b/include/linux/highmem.h @@ -324,10 +324,10 @@ static inline void memcpy_to_page(struct page *page, size_t offset, static inline void memzero_page(struct page *page, size_t offset, size_t len) { - char *addr = kmap_atomic(page); + char *addr = kmap_local_page(page); memset(addr + offset, 0, len); flush_dcache_page(page); - kunmap_atomic(addr); + kunmap_local(addr); } #endif /* _LINUX_HIGHMEM_H */