From mboxrd@z Thu Jan 1 00:00:00 1970 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=-16.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable 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 1C430C49361 for ; Tue, 15 Jun 2021 13:33:55 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id F2C6161481 for ; Tue, 15 Jun 2021 13:33:54 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230403AbhFONf4 (ORCPT ); Tue, 15 Jun 2021 09:35:56 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:55628 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230364AbhFONfg (ORCPT ); Tue, 15 Jun 2021 09:35:36 -0400 Received: from casper.infradead.org (casper.infradead.org [IPv6:2001:8b0:10b:1236::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id CC565C0613A4; Tue, 15 Jun 2021 06:33:31 -0700 (PDT) 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=1vl+lJtrWoiUzzKH0COLUmHTJyPccdOEl/SXPdFbHq8=; b=orcVM4ZS+23ndu19ILV+oG8Kdb EYq30bY5COpSe8j73G1ZSpdxCnZvGUug6zi+n3PtNKTIYr2gdrB6nrERB3vHdIIR4hPOT/UpTCyWs AYodO6/zr9y0OT7KoRpqlRoey1MBbGiUTgoxOd/kcm4TRjkQ8E3XYxEkGCrC8InktD++/3VespVyQ FAP7MeVYaSA+NqHbe0Hkisx+6r4BLNLdkNjC0eQtKEFztNzuWuVCAheweEjtcFUDpKAbuCLRmg4/G EVnQKf6DqMMaY9iFPuJi82thdu+6gkEtdThFuqtrkl3pXuuSly/nPtwkQFcg10SnbFD7sIkGMm4qc 1ysBDTTA==; Received: from [2001:4bb8:19b:fdce:9045:1e63:20f0:ca9] (helo=localhost) by casper.infradead.org with esmtpsa (Exim 4.94.2 #2 (Red Hat Linux)) id 1lt9Ae-006obD-98; Tue, 15 Jun 2021 13:32:08 +0000 From: Christoph Hellwig To: Jens Axboe , Thomas Gleixner Cc: Thomas Bogendoerfer , Geoff Levand , Ilya Dryomov , Dongsheng Yang , Mike Snitzer , "James E.J. Bottomley" , Ira Weiny , dm-devel@redhat.com, linux-mips@vger.kernel.org, linux-kernel@vger.kernel.org, linux-block@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, ceph-devel@vger.kernel.org, linux-arch@vger.kernel.org Subject: [PATCH 18/18] block: use bvec_kmap_local in bio_integrity_process Date: Tue, 15 Jun 2021 15:24:56 +0200 Message-Id: <20210615132456.753241-19-hch@lst.de> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20210615132456.753241-1-hch@lst.de> References: <20210615132456.753241-1-hch@lst.de> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-SRS-Rewrite: SMTP reverse-path rewritten from by casper.infradead.org. See http://www.infradead.org/rpr.html Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org Using local kmaps slightly reduces the chances to stray writes, and the bvec interface cleans up the code a little bit. Signed-off-by: Christoph Hellwig --- block/bio-integrity.c | 14 ++++++-------- 1 file changed, 6 insertions(+), 8 deletions(-) diff --git a/block/bio-integrity.c b/block/bio-integrity.c index 4b4eb8964a6f..8f54d49dc500 100644 --- a/block/bio-integrity.c +++ b/block/bio-integrity.c @@ -172,18 +172,16 @@ static blk_status_t bio_integrity_process(struct bio *bio, iter.prot_buf = prot_buf; __bio_for_each_segment(bv, bio, bviter, *proc_iter) { - void *kaddr = kmap_atomic(bv.bv_page); + void *kaddr = bvec_kmap_local(&bv); - iter.data_buf = kaddr + bv.bv_offset; + iter.data_buf = kaddr; iter.data_size = bv.bv_len; - ret = proc_fn(&iter); - if (ret) { - kunmap_atomic(kaddr); - return ret; - } + kunmap_local(kaddr); + + if (ret) + break; - kunmap_atomic(kaddr); } return ret; } -- 2.30.2 From mboxrd@z Thu Jan 1 00:00:00 1970 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=unavailable 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 06EE3C48BE5 for ; Tue, 15 Jun 2021 13:40:37 +0000 (UTC) Received: from lists.ozlabs.org (lists.ozlabs.org [112.213.38.117]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 9F16861439 for ; Tue, 15 Jun 2021 13:40:36 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 9F16861439 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=lst.de Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Received: from boromir.ozlabs.org (localhost [IPv6:::1]) by lists.ozlabs.org (Postfix) with ESMTP id 4G48b80mhTz3dYY for ; Tue, 15 Jun 2021 23:40:36 +1000 (AEST) Authentication-Results: lists.ozlabs.org; dkim=fail reason="signature verification failed" (2048-bit key; secure) header.d=infradead.org header.i=@infradead.org header.a=rsa-sha256 header.s=casper.20170209 header.b=orcVM4ZS; dkim-atps=neutral Authentication-Results: lists.ozlabs.org; spf=none (no SPF record) smtp.mailfrom=casper.srs.infradead.org (client-ip=2001:8b0:10b:1236::1; helo=casper.infradead.org; envelope-from=batv+01b1093948f83d17b939+6505+infradead.org+hch@casper.srs.infradead.org; receiver=) Authentication-Results: lists.ozlabs.org; dkim=pass (2048-bit key; secure) header.d=infradead.org header.i=@infradead.org header.a=rsa-sha256 header.s=casper.20170209 header.b=orcVM4ZS; dkim-atps=neutral Received: from casper.infradead.org (casper.infradead.org [IPv6:2001:8b0:10b:1236::1]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 4G48RP4dW8z3c6b for ; Tue, 15 Jun 2021 23:33:53 +1000 (AEST) 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=1vl+lJtrWoiUzzKH0COLUmHTJyPccdOEl/SXPdFbHq8=; b=orcVM4ZS+23ndu19ILV+oG8Kdb EYq30bY5COpSe8j73G1ZSpdxCnZvGUug6zi+n3PtNKTIYr2gdrB6nrERB3vHdIIR4hPOT/UpTCyWs AYodO6/zr9y0OT7KoRpqlRoey1MBbGiUTgoxOd/kcm4TRjkQ8E3XYxEkGCrC8InktD++/3VespVyQ FAP7MeVYaSA+NqHbe0Hkisx+6r4BLNLdkNjC0eQtKEFztNzuWuVCAheweEjtcFUDpKAbuCLRmg4/G EVnQKf6DqMMaY9iFPuJi82thdu+6gkEtdThFuqtrkl3pXuuSly/nPtwkQFcg10SnbFD7sIkGMm4qc 1ysBDTTA==; Received: from [2001:4bb8:19b:fdce:9045:1e63:20f0:ca9] (helo=localhost) by casper.infradead.org with esmtpsa (Exim 4.94.2 #2 (Red Hat Linux)) id 1lt9Ae-006obD-98; Tue, 15 Jun 2021 13:32:08 +0000 From: Christoph Hellwig To: Jens Axboe , Thomas Gleixner Subject: [PATCH 18/18] block: use bvec_kmap_local in bio_integrity_process Date: Tue, 15 Jun 2021 15:24:56 +0200 Message-Id: <20210615132456.753241-19-hch@lst.de> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20210615132456.753241-1-hch@lst.de> References: <20210615132456.753241-1-hch@lst.de> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-SRS-Rewrite: SMTP reverse-path rewritten from by casper.infradead.org. See http://www.infradead.org/rpr.html X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-arch@vger.kernel.org, linux-block@vger.kernel.org, Thomas Bogendoerfer , Mike Snitzer , Geoff Levand , linuxppc-dev@lists.ozlabs.org, linux-mips@vger.kernel.org, Dongsheng Yang , linux-kernel@vger.kernel.org, "James E.J. Bottomley" , dm-devel@redhat.com, Ilya Dryomov , Ira Weiny , ceph-devel@vger.kernel.org Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" Using local kmaps slightly reduces the chances to stray writes, and the bvec interface cleans up the code a little bit. Signed-off-by: Christoph Hellwig --- block/bio-integrity.c | 14 ++++++-------- 1 file changed, 6 insertions(+), 8 deletions(-) diff --git a/block/bio-integrity.c b/block/bio-integrity.c index 4b4eb8964a6f..8f54d49dc500 100644 --- a/block/bio-integrity.c +++ b/block/bio-integrity.c @@ -172,18 +172,16 @@ static blk_status_t bio_integrity_process(struct bio *bio, iter.prot_buf = prot_buf; __bio_for_each_segment(bv, bio, bviter, *proc_iter) { - void *kaddr = kmap_atomic(bv.bv_page); + void *kaddr = bvec_kmap_local(&bv); - iter.data_buf = kaddr + bv.bv_offset; + iter.data_buf = kaddr; iter.data_size = bv.bv_len; - ret = proc_fn(&iter); - if (ret) { - kunmap_atomic(kaddr); - return ret; - } + kunmap_local(kaddr); + + if (ret) + break; - kunmap_atomic(kaddr); } return ret; } -- 2.30.2 From mboxrd@z Thu Jan 1 00:00:00 1970 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=-13.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS 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 E9CE7C48BE5 for ; Tue, 15 Jun 2021 13:33:45 +0000 (UTC) Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.133.124]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 8E58661474 for ; Tue, 15 Jun 2021 13:33:45 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 8E58661474 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=lst.de Authentication-Results: mail.kernel.org; spf=tempfail smtp.mailfrom=dm-devel-bounces@redhat.com Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-98-j6pkdlCBPGicNaJ0HJYoOA-1; Tue, 15 Jun 2021 09:33:43 -0400 X-MC-Unique: j6pkdlCBPGicNaJ0HJYoOA-1 Received: from smtp.corp.redhat.com (int-mx07.intmail.prod.int.phx2.redhat.com [10.5.11.22]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 94A301936B88; Tue, 15 Jun 2021 13:33:37 +0000 (UTC) Received: from colo-mx.corp.redhat.com (colo-mx02.intmail.prod.int.phx2.redhat.com [10.5.11.21]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 71619100164C; Tue, 15 Jun 2021 13:33:37 +0000 (UTC) Received: from lists01.pubmisc.prod.ext.phx2.redhat.com (lists01.pubmisc.prod.ext.phx2.redhat.com [10.5.19.33]) by colo-mx.corp.redhat.com (Postfix) with ESMTP id 43CB04A717; Tue, 15 Jun 2021 13:33:37 +0000 (UTC) Received: from smtp.corp.redhat.com (int-mx06.intmail.prod.int.rdu2.redhat.com [10.11.54.6]) by lists01.pubmisc.prod.ext.phx2.redhat.com (8.13.8/8.13.8) with ESMTP id 15FDXaJo005518 for ; Tue, 15 Jun 2021 09:33:36 -0400 Received: by smtp.corp.redhat.com (Postfix) id 1BEE521122CB; Tue, 15 Jun 2021 13:33:36 +0000 (UTC) Received: from mimecast-mx02.redhat.com (mimecast03.extmail.prod.ext.rdu2.redhat.com [10.11.55.19]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 17BE621122CA for ; Tue, 15 Jun 2021 13:33:33 +0000 (UTC) Received: from us-smtp-1.mimecast.com (us-smtp-2.mimecast.com [207.211.31.81]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 6FB5880D0E1 for ; Tue, 15 Jun 2021 13:33:33 +0000 (UTC) Received: from casper.infradead.org (casper.infradead.org [90.155.50.34]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-293-X9Ejhp2lPkaPKaD4UbHDqw-1; Tue, 15 Jun 2021 09:33:31 -0400 X-MC-Unique: X9Ejhp2lPkaPKaD4UbHDqw-1 Received: from [2001:4bb8:19b:fdce:9045:1e63:20f0:ca9] (helo=localhost) by casper.infradead.org with esmtpsa (Exim 4.94.2 #2 (Red Hat Linux)) id 1lt9Ae-006obD-98; Tue, 15 Jun 2021 13:32:08 +0000 From: Christoph Hellwig To: Jens Axboe , Thomas Gleixner Date: Tue, 15 Jun 2021 15:24:56 +0200 Message-Id: <20210615132456.753241-19-hch@lst.de> In-Reply-To: <20210615132456.753241-1-hch@lst.de> References: <20210615132456.753241-1-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-Mimecast-Impersonation-Protect: Policy=CLT - Impersonation Protection Definition; Similar Internal Domain=false; Similar Monitored External Domain=false; Custom External Domain=false; Mimecast External Domain=false; Newly Observed Domain=false; Internal User Name=false; Custom Display Name List=false; Reply-to Address Mismatch=false; Targeted Threat Dictionary=false; Mimecast Threat Dictionary=false; Custom Threat Dictionary=false X-Scanned-By: MIMEDefang 2.78 on 10.11.54.6 X-loop: dm-devel@redhat.com Cc: linux-arch@vger.kernel.org, linux-block@vger.kernel.org, Thomas Bogendoerfer , Mike Snitzer , Geoff Levand , linuxppc-dev@lists.ozlabs.org, linux-mips@vger.kernel.org, Dongsheng Yang , linux-kernel@vger.kernel.org, "James E.J. Bottomley" , dm-devel@redhat.com, Ilya Dryomov , Ira Weiny , ceph-devel@vger.kernel.org Subject: [dm-devel] [PATCH 18/18] block: use bvec_kmap_local in bio_integrity_process X-BeenThere: dm-devel@redhat.com X-Mailman-Version: 2.1.12 Precedence: junk List-Id: device-mapper development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: dm-devel-bounces@redhat.com Errors-To: dm-devel-bounces@redhat.com X-Scanned-By: MIMEDefang 2.84 on 10.5.11.22 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=dm-devel-bounces@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Using local kmaps slightly reduces the chances to stray writes, and the bvec interface cleans up the code a little bit. Signed-off-by: Christoph Hellwig --- block/bio-integrity.c | 14 ++++++-------- 1 file changed, 6 insertions(+), 8 deletions(-) diff --git a/block/bio-integrity.c b/block/bio-integrity.c index 4b4eb8964a6f..8f54d49dc500 100644 --- a/block/bio-integrity.c +++ b/block/bio-integrity.c @@ -172,18 +172,16 @@ static blk_status_t bio_integrity_process(struct bio *bio, iter.prot_buf = prot_buf; __bio_for_each_segment(bv, bio, bviter, *proc_iter) { - void *kaddr = kmap_atomic(bv.bv_page); + void *kaddr = bvec_kmap_local(&bv); - iter.data_buf = kaddr + bv.bv_offset; + iter.data_buf = kaddr; iter.data_size = bv.bv_len; - ret = proc_fn(&iter); - if (ret) { - kunmap_atomic(kaddr); - return ret; - } + kunmap_local(kaddr); + + if (ret) + break; - kunmap_atomic(kaddr); } return ret; } -- 2.30.2 -- dm-devel mailing list dm-devel@redhat.com https://listman.redhat.com/mailman/listinfo/dm-devel