From patchwork Tue Jul 27 05:56:32 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 12401595 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=-16.7 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,URIBL_BLOCKED,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 19795C432BE for ; Tue, 27 Jul 2021 06:03:14 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id EDBE360FE4 for ; Tue, 27 Jul 2021 06:03:13 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235366AbhG0GDL (ORCPT ); Tue, 27 Jul 2021 02:03:11 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:45066 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233553AbhG0GDL (ORCPT ); Tue, 27 Jul 2021 02:03:11 -0400 Received: from casper.infradead.org (casper.infradead.org [IPv6:2001:8b0:10b:1236::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 9395FC061757; Mon, 26 Jul 2021 23:03:11 -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=iOFMfubZNap8awOdEeuB+1FnsFdyWL++zNMgqZMjxF4=; b=EE3116pW/ZHDPtIu3qDf41HBYY FM1h6w0lGS5hR20ymFRp8+II4vtz6h1rmMOZNlfErtIdeBvb/oPG44XSrpAkC+qapz6QrTJCEvAm1 MZp7LcMfaeb8HnfEiwT5Lq+uZmlc7UCoZpM37rQDaFBKdyYdiG0xQ/z0dTqca35oPiyHqDS9m86Mf s+7YlHRXNCu0qzQyK1sflfAYiEmSaOOArrx+dT5T9SylGjrBMZkW0an+ieci9UUu3AoXSXqFH70A7 NzTS+NeWDqYH1rBzP4+4yN/vDJk30A4LjL9MKLseW5GMeoxAVVVhVLz+2VD4rMJiEUoozwhn4tkLN Z1PuNM5w==; Received: from [2001:4bb8:184:87c5:b7fb:1299:a9e5:ff56] (helo=localhost) by casper.infradead.org with esmtpsa (Exim 4.94.2 #2 (Red Hat Linux)) id 1m8G6e-00EiKC-9G; Tue, 27 Jul 2021 05:59:07 +0000 From: Christoph Hellwig To: Jens Axboe , Thomas Gleixner Cc: Thomas Bogendoerfer , Andrew Morton , 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, Chaitanya Kulkarni , "Martin K . Petersen" Subject: [PATCH 01/15] MIPS: don't include in Date: Tue, 27 Jul 2021 07:56:32 +0200 Message-Id: <20210727055646.118787-2-hch@lst.de> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20210727055646.118787-1-hch@lst.de> References: <20210727055646.118787-1-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 Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org There is no need to include genhd.h from a random arch header, and not doing so prevents the possibility for nasty include loops. Signed-off-by: Christoph Hellwig Reviewed-by: Chaitanya Kulkarni Reviewed-by: Martin K. Petersen Reviewed-by: Ira Weiny --- arch/mips/include/asm/mach-rc32434/rb.h | 2 -- 1 file changed, 2 deletions(-) diff --git a/arch/mips/include/asm/mach-rc32434/rb.h b/arch/mips/include/asm/mach-rc32434/rb.h index d502673a4f6c..34d179ca020b 100644 --- a/arch/mips/include/asm/mach-rc32434/rb.h +++ b/arch/mips/include/asm/mach-rc32434/rb.h @@ -7,8 +7,6 @@ #ifndef __ASM_RC32434_RB_H #define __ASM_RC32434_RB_H -#include - #define REGBASE 0x18000000 #define IDT434_REG_BASE ((volatile void *) KSEG1ADDR(REGBASE)) #define UART0BASE 0x58000 From patchwork Tue Jul 27 05:56:33 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 12401597 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=-16.7 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,URIBL_BLOCKED,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 EB5A4C4320E for ; Tue, 27 Jul 2021 06:03:44 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id D132B60FE3 for ; Tue, 27 Jul 2021 06:03:44 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235510AbhG0GDn (ORCPT ); Tue, 27 Jul 2021 02:03:43 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:45198 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233553AbhG0GDm (ORCPT ); Tue, 27 Jul 2021 02:03:42 -0400 Received: from casper.infradead.org (casper.infradead.org [IPv6:2001:8b0:10b:1236::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id CF457C061757; Mon, 26 Jul 2021 23:03:42 -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=v8qmxMjLxIzlD6RqvjykX0yBn4O2X8VoNuXIPKQ0DWs=; b=F1zxkw09un7Q7ywy8fFGyj0VQi i0Hwfanb4ZPab9UkwO3hM+KrlapC6OX+d4CgcwAwbOrB0qqpyy2JSGTWIdud2I5r39EazVdQYpiiI dvmgodgiOp1dL3vAAr7+VbwSAXdj9tZuD3rJF2M3L40WNCQwdPLFtRAR5CFj1uSGA7jE4V7yFC6w2 0nUeZHjoY30POJBukQtnDQxgCaT/4+FSg6JzOrGU/p+m0fNf/UsW1wV8tSahJa1MxYHfaRZyv8uaO uHy5Uho9HBxe8lnFUSQraMHiA0VrrYPDuDZNXU/XmNXgnBQBVccIV4EImTr8hbAnLXGUpGJuKvjCf 6mSmSB/A==; Received: from [2001:4bb8:184:87c5:b7fb:1299:a9e5:ff56] (helo=localhost) by casper.infradead.org with esmtpsa (Exim 4.94.2 #2 (Red Hat Linux)) id 1m8G8U-00EiTR-JU; Tue, 27 Jul 2021 06:00:44 +0000 From: Christoph Hellwig To: Jens Axboe , Thomas Gleixner Cc: Thomas Bogendoerfer , Andrew Morton , 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, Bart Van Assche , Chaitanya Kulkarni , "Martin K . Petersen" Subject: [PATCH 02/15] bvec: fix the include guards for bvec.h Date: Tue, 27 Jul 2021 07:56:33 +0200 Message-Id: <20210727055646.118787-3-hch@lst.de> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20210727055646.118787-1-hch@lst.de> References: <20210727055646.118787-1-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 Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org Fix the include guards to match the file naming. Signed-off-by: Christoph Hellwig Reviewed-by: Bart Van Assche Reviewed-by: Chaitanya Kulkarni Reviewed-by: Martin K. Petersen Reviewed-by: Ira Weiny --- include/linux/bvec.h | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/include/linux/bvec.h b/include/linux/bvec.h index ff832e698efb..883faf5f1523 100644 --- a/include/linux/bvec.h +++ b/include/linux/bvec.h @@ -4,8 +4,8 @@ * * Copyright (C) 2001 Ming Lei */ -#ifndef __LINUX_BVEC_ITER_H -#define __LINUX_BVEC_ITER_H +#ifndef __LINUX_BVEC_H +#define __LINUX_BVEC_H #include #include @@ -183,4 +183,4 @@ static inline void bvec_advance(const struct bio_vec *bvec, } } -#endif /* __LINUX_BVEC_ITER_H */ +#endif /* __LINUX_BVEC_H */ From patchwork Tue Jul 27 05:56:34 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 12401599 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=-16.7 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,URIBL_BLOCKED,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 9868CC4320A for ; Tue, 27 Jul 2021 06:04:37 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 868EE60FE4 for ; Tue, 27 Jul 2021 06:04:37 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235583AbhG0GEf (ORCPT ); Tue, 27 Jul 2021 02:04:35 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:45420 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235612AbhG0GEf (ORCPT ); Tue, 27 Jul 2021 02:04:35 -0400 Received: from casper.infradead.org (casper.infradead.org [IPv6:2001:8b0:10b:1236::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 51507C061757; Mon, 26 Jul 2021 23:04:35 -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=RUZ53JRW+Y40jSDld/pmd24FvGrlJLI/Shilr+kOgJg=; b=YWh+6nhQFFioCIPOaLPmYk6kUA 6phgr4hvpipWGMY5WrLgPeEkB4uW8VA0j+vWp4vEq1BZNK3fLeCviChI1wxCr7TwSCv5JWjAve9II 6LiDrbLg9EvwFqJecik6Js3rUHufaJkZCKAtHgCTh/CCckjbWYm2ycqNvMDDtmJc/3lZtu3c/COHQ PrHJ/uenZTh4fQX9SCZ73Uvve3rGaZHG0pnsvLWsdXj02XrzVj14JwVTLYySR1D0FSALY2mC+BDX4 ipM5mIrqBnfstMrXMkmCLkoVIHbzrvT5G9hKOhyhskrtjV0UZEPDO8JZgpTKFnUurL4fj8SlbgA8Z 6/VrJBfQ==; Received: from [2001:4bb8:184:87c5:b7fb:1299:a9e5:ff56] (helo=localhost) by casper.infradead.org with esmtpsa (Exim 4.94.2 #2 (Red Hat Linux)) id 1m8G9o-00EiaK-P7; Tue, 27 Jul 2021 06:01:59 +0000 From: Christoph Hellwig To: Jens Axboe , Thomas Gleixner Cc: Thomas Bogendoerfer , Andrew Morton , 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, Chaitanya Kulkarni , "Martin K . Petersen" Subject: [PATCH 03/15] bvec: add a bvec_kmap_local helper Date: Tue, 27 Jul 2021 07:56:34 +0200 Message-Id: <20210727055646.118787-4-hch@lst.de> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20210727055646.118787-1-hch@lst.de> References: <20210727055646.118787-1-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 Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org Add a helper to call kmap_local_page on a bvec. There is no need for an unmap helper given that kunmap_local accept any address in the mapped page. Signed-off-by: Christoph Hellwig Reviewed-by: Chaitanya Kulkarni Reviewed-by: Martin K. Petersen Reviewed-by: Ira Weiny --- include/linux/bvec.h | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/include/linux/bvec.h b/include/linux/bvec.h index 883faf5f1523..f8710af18eef 100644 --- a/include/linux/bvec.h +++ b/include/linux/bvec.h @@ -7,6 +7,7 @@ #ifndef __LINUX_BVEC_H #define __LINUX_BVEC_H +#include #include #include #include @@ -183,4 +184,16 @@ static inline void bvec_advance(const struct bio_vec *bvec, } } +/** + * bvec_kmap_local - map a bvec into the kernel virtual address space + * @bvec: bvec to map + * + * Must be called on single-page bvecs only. Call kunmap_local on the returned + * address to unmap. + */ +static inline void *bvec_kmap_local(struct bio_vec *bvec) +{ + return kmap_local_page(bvec->bv_page) + bvec->bv_offset; +} + #endif /* __LINUX_BVEC_H */ From patchwork Tue Jul 27 05:56:35 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 12401631 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=-16.7 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,URIBL_BLOCKED,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 4E3E2C4320E for ; Tue, 27 Jul 2021 06:06:49 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 35D5361042 for ; Tue, 27 Jul 2021 06:06:49 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235296AbhG0GGr (ORCPT ); Tue, 27 Jul 2021 02:06:47 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:45916 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235063AbhG0GGq (ORCPT ); Tue, 27 Jul 2021 02:06:46 -0400 Received: from casper.infradead.org (casper.infradead.org [IPv6:2001:8b0:10b:1236::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 3B8F5C061757; Mon, 26 Jul 2021 23:06:45 -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=fc5Ez34sLZNxmKMDItn0C4JoYtAi+tB+FjEbXFXGhDM=; b=qgWPpEvvWAHA6FZ0f6gF6ITeDo xUdoG7Af4Q0gsCS5jkWcgnJ+Z+cb+JPr4iKtpX86jrIz1LPuRuVSQ93BfoOEoYzFIuEzGUwsAnRBm p3SGmsGWNkj0J4QhGK34aSrtsaB1D32A3LVqo2/tQa4/CFUeajWc+P1uUWlCa3qYZCJu/EuLBcWrO 9m3a2OmEm8lha2nr337QOLHzfRteKvZzV2BwYPRp6CUROrjALn2Tg0P5SIYuN2J34EsLtl3bes+/o i8rZWlcfyN+2kEfKbD8P2H263iOTIjBNnO4usHBC/opG0JhaMeY8zYnbJ2nLad/at4xEq0C3Djm3Z OwJmp+/w==; Received: from [2001:4bb8:184:87c5:b7fb:1299:a9e5:ff56] (helo=localhost) by casper.infradead.org with esmtpsa (Exim 4.94.2 #2 (Red Hat Linux)) id 1m8GAm-00EieV-Rz; Tue, 27 Jul 2021 06:03:10 +0000 From: Christoph Hellwig To: Jens Axboe , Thomas Gleixner Cc: Thomas Bogendoerfer , Andrew Morton , 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, Chaitanya Kulkarni , "Martin K . Petersen" Subject: [PATCH 04/15] bvec: add memcpy_{from,to}_bvec and memzero_bvec helper Date: Tue, 27 Jul 2021 07:56:35 +0200 Message-Id: <20210727055646.118787-5-hch@lst.de> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20210727055646.118787-1-hch@lst.de> References: <20210727055646.118787-1-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 Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org Add helpers to perform common memory operation on a bvec. Signed-off-by: Christoph Hellwig Reviewed-by: Chaitanya Kulkarni Reviewed-by: Martin K. Petersen Reviewed-by: Ira Weiny --- include/linux/bvec.h | 33 +++++++++++++++++++++++++++++++++ 1 file changed, 33 insertions(+) diff --git a/include/linux/bvec.h b/include/linux/bvec.h index f8710af18eef..f9fa43b940ff 100644 --- a/include/linux/bvec.h +++ b/include/linux/bvec.h @@ -196,4 +196,37 @@ static inline void *bvec_kmap_local(struct bio_vec *bvec) return kmap_local_page(bvec->bv_page) + bvec->bv_offset; } +/** + * memcpy_from_bvec - copy data from a bvec + * @bvec: bvec to copy from + * + * Must be called on single-page bvecs only. + */ +static inline void memcpy_from_bvec(char *to, struct bio_vec *bvec) +{ + memcpy_from_page(to, bvec->bv_page, bvec->bv_offset, bvec->bv_len); +} + +/** + * memcpy_to_bvec - copy data to a bvec + * @bvec: bvec to copy to + * + * Must be called on single-page bvecs only. + */ +static inline void memcpy_to_bvec(struct bio_vec *bvec, const char *from) +{ + memcpy_to_page(bvec->bv_page, bvec->bv_offset, from, bvec->bv_len); +} + +/** + * memzero_bvec - zero all data in a bvec + * @bvec: bvec to zero + * + * Must be called on single-page bvecs only. + */ +static inline void memzero_bvec(struct bio_vec *bvec) +{ + memzero_page(bvec->bv_page, bvec->bv_offset, bvec->bv_len); +} + #endif /* __LINUX_BVEC_H */ From patchwork Tue Jul 27 05:56:36 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 12401633 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=-16.7 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,URIBL_BLOCKED,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 862DEC4320E for ; Tue, 27 Jul 2021 06:07:46 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 7024961103 for ; Tue, 27 Jul 2021 06:07:46 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235390AbhG0GHo (ORCPT ); Tue, 27 Jul 2021 02:07:44 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46146 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235063AbhG0GHo (ORCPT ); Tue, 27 Jul 2021 02:07:44 -0400 Received: from casper.infradead.org (casper.infradead.org [IPv6:2001:8b0:10b:1236::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A6F6DC061757; Mon, 26 Jul 2021 23:07:44 -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=M2KGG6I0U2EZ5R+rEPh6yOtJDtRGWl8X6UKQ2IJBGZQ=; b=CRL1laGIBQmQ1ZR+XgfjfpB2n6 CI9D4xjMJHRNUpbpT5zdNb3ttNHIEZ062MFo8E26hr6xTyrjPMw8xu8qQ8bUvCSrghNbadb55mrWv 8fl5GN5mDWWAxkYRTHKunAmC1GPf/LzcJPgRZd1xURbB7YjQtGLz8xFwZD81kO9ApElpUe9KY2l38 s03fMuiKRxcZ+4mHQPgGbcwGO7Pwilw3rCGjYwva0cfs2myPpFX3YdyvVEaM5HazuvKr3hTp/Qk+m 9sV+2nK6xT8z63QQ956jcnxfk4PP9DXaGh6dEj7KaV4hO4J/FA/hrc9ELvPvPH6jfpGo/7VJGBobk NfxX31Fw==; Received: from [2001:4bb8:184:87c5:b7fb:1299:a9e5:ff56] (helo=localhost) by casper.infradead.org with esmtpsa (Exim 4.94.2 #2 (Red Hat Linux)) id 1m8GC8-00EijX-Cw; Tue, 27 Jul 2021 06:04:16 +0000 From: Christoph Hellwig To: Jens Axboe , Thomas Gleixner Cc: Thomas Bogendoerfer , Andrew Morton , 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, Chaitanya Kulkarni , "Martin K . Petersen" Subject: [PATCH 05/15] block: use memzero_page in zero_fill_bio Date: Tue, 27 Jul 2021 07:56:36 +0200 Message-Id: <20210727055646.118787-6-hch@lst.de> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20210727055646.118787-1-hch@lst.de> References: <20210727055646.118787-1-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 Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org Use memzero_bvec to zero each segment in the bio instead of manually mapping and zeroing the data. Signed-off-by: Christoph Hellwig Reviewed-by: Chaitanya Kulkarni Reviewed-by: Martin K. Petersen Reviewed-by: Ira Weiny --- block/bio.c | 9 ++------- 1 file changed, 2 insertions(+), 7 deletions(-) diff --git a/block/bio.c b/block/bio.c index 1fab762e079b..2e436bccb1e2 100644 --- a/block/bio.c +++ b/block/bio.c @@ -495,16 +495,11 @@ EXPORT_SYMBOL(bio_kmalloc); void zero_fill_bio(struct bio *bio) { - unsigned long flags; struct bio_vec bv; struct bvec_iter iter; - bio_for_each_segment(bv, bio, iter) { - char *data = bvec_kmap_irq(&bv, &flags); - memset(data, 0, bv.bv_len); - flush_dcache_page(bv.bv_page); - bvec_kunmap_irq(data, &flags); - } + bio_for_each_segment(bv, bio, iter) + memzero_bvec(&bv); } EXPORT_SYMBOL(zero_fill_bio); From patchwork Tue Jul 27 05:56:37 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 12401635 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=-16.7 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,URIBL_BLOCKED,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 9BDADC432BE for ; Tue, 27 Jul 2021 06:09:07 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 6F0D061102 for ; Tue, 27 Jul 2021 06:09:07 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235286AbhG0GJF (ORCPT ); Tue, 27 Jul 2021 02:09:05 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46468 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235063AbhG0GJF (ORCPT ); Tue, 27 Jul 2021 02:09:05 -0400 Received: from casper.infradead.org (casper.infradead.org [IPv6:2001:8b0:10b:1236::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B52F6C061757; Mon, 26 Jul 2021 23:09:05 -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=cNxTcG8XdnUuoOVixjLVY8XjmYtYsiM+b+iVbGfjzMo=; b=YElztzLh9bPWVL4V+uU9bkDpMk NzLXuxXX8mqkPiEdB2lVQLf3TV5qJiqowOEHrhhlM06Y91t6eaziCzTqxX42qQ+8cb1d8ZXTRaikg YF5bKQT+bE2YjfM1cjolnhAs+dTL9vFk6NqmTNFE5uy2JYG8dRJQvDpF3Je4y8fhZ+4UaW9tikYHy WY55ceDWlHcUJgaRiSXsKjeyGORzyQs4tFpWjixBwSlsLjNevh7FbpN0Wxj9UdkAEILekZHJ2A5iP zcPxLvMPLFrlCZ5qfJamSbDvM83tqLmnBQ/axtL8y/k+21PGCIp8eSw58kmzmrTHns4GfaGKtsH6k qWoYyuyg==; Received: from [2001:4bb8:184:87c5:b7fb:1299:a9e5:ff56] (helo=localhost) by casper.infradead.org with esmtpsa (Exim 4.94.2 #2 (Red Hat Linux)) id 1m8GD4-00Einn-II; Tue, 27 Jul 2021 06:05:39 +0000 From: Christoph Hellwig To: Jens Axboe , Thomas Gleixner Cc: Thomas Bogendoerfer , Andrew Morton , 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, "Martin K . Petersen" Subject: [PATCH 06/15] rbd: use memzero_bvec Date: Tue, 27 Jul 2021 07:56:37 +0200 Message-Id: <20210727055646.118787-7-hch@lst.de> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20210727055646.118787-1-hch@lst.de> References: <20210727055646.118787-1-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 Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org Use memzero_bvec instead of reimplementing it. Signed-off-by: Christoph Hellwig Acked-by: Ilya Dryomov Reviewed-by: Martin K. Petersen Reviewed-by: Ira Weiny --- drivers/block/rbd.c | 15 ++------------- 1 file changed, 2 insertions(+), 13 deletions(-) diff --git a/drivers/block/rbd.c b/drivers/block/rbd.c index 90b947c96402..6d596c2c2cd6 100644 --- a/drivers/block/rbd.c +++ b/drivers/block/rbd.c @@ -1219,24 +1219,13 @@ static void rbd_dev_mapping_clear(struct rbd_device *rbd_dev) rbd_dev->mapping.size = 0; } -static void zero_bvec(struct bio_vec *bv) -{ - void *buf; - unsigned long flags; - - buf = bvec_kmap_irq(bv, &flags); - memset(buf, 0, bv->bv_len); - flush_dcache_page(bv->bv_page); - bvec_kunmap_irq(buf, &flags); -} - static void zero_bios(struct ceph_bio_iter *bio_pos, u32 off, u32 bytes) { struct ceph_bio_iter it = *bio_pos; ceph_bio_iter_advance(&it, off); ceph_bio_iter_advance_step(&it, bytes, ({ - zero_bvec(&bv); + memzero_bvec(&bv); })); } @@ -1246,7 +1235,7 @@ static void zero_bvecs(struct ceph_bvec_iter *bvec_pos, u32 off, u32 bytes) ceph_bvec_iter_advance(&it, off); ceph_bvec_iter_advance_step(&it, bytes, ({ - zero_bvec(&bv); + memzero_bvec(&bv); })); } From patchwork Tue Jul 27 05:56:38 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 12401659 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=-16.7 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,URIBL_BLOCKED,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 0EFC8C432BE for ; Tue, 27 Jul 2021 06:10:54 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id E0E2F61106 for ; Tue, 27 Jul 2021 06:10:53 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235511AbhG0GKv (ORCPT ); Tue, 27 Jul 2021 02:10:51 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46884 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235455AbhG0GKu (ORCPT ); Tue, 27 Jul 2021 02:10:50 -0400 Received: from casper.infradead.org (casper.infradead.org [IPv6:2001:8b0:10b:1236::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C9653C061757; Mon, 26 Jul 2021 23:10:50 -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=t3OnbpMN0amphJR+ZqgOptW+ighdT38XSDrB1q6UGsY=; b=jxiZJUH1ZldCiRMidy9A0MN4FV okgzD1ux3SJB6nURWa1SMC0+SxoMfrsTCYSAkO/RMZj4ghpmPzEuy9qfzXK3BpzVja11hpREgQ2hB /xs650Kb1jqHLHG+yyDtL2K10/2IDdROHGxy3DsJDxhIuJsLNiPv08PvDZhR/wX8ZbA0KvfAeTr0U GLmNyWK50LLQrs5sQvt3sYtFc1Jm9Sp0BckshzulJzaqKLzR0tzaKziM8xRGC9IEOWHsj88pyusQh GEqauNJTMpP+sztKcdRkRat9r7hGjVwUNFPS8WEPtr3xCKsQNrYxFDMOGMl+kDSmZfS42eBHW4voZ CaITiwNw==; Received: from [2001:4bb8:184:87c5:b7fb:1299:a9e5:ff56] (helo=localhost) by casper.infradead.org with esmtpsa (Exim 4.94.2 #2 (Red Hat Linux)) id 1m8GEm-00Eit3-Oj; Tue, 27 Jul 2021 06:07:07 +0000 From: Christoph Hellwig To: Jens Axboe , Thomas Gleixner Cc: Thomas Bogendoerfer , Andrew Morton , 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, "Martin K . Petersen" Subject: [PATCH 07/15] dm-writecache: use bvec_kmap_local instead of bvec_kmap_irq Date: Tue, 27 Jul 2021 07:56:38 +0200 Message-Id: <20210727055646.118787-8-hch@lst.de> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20210727055646.118787-1-hch@lst.de> References: <20210727055646.118787-1-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 Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org There is no need to disable interrupts in bio_copy_block, and the local only mappings helps to avoid any sort of problems with stray writes into the bio data. Signed-off-by: Christoph Hellwig Reviewed-by: Martin K. Petersen Reviewed-by: Ira Weiny --- drivers/md/dm-writecache.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/drivers/md/dm-writecache.c b/drivers/md/dm-writecache.c index e21e29e81bbf..3d2cf811ec3e 100644 --- a/drivers/md/dm-writecache.c +++ b/drivers/md/dm-writecache.c @@ -1214,14 +1214,13 @@ static void memcpy_flushcache_optimized(void *dest, void *source, size_t size) static void bio_copy_block(struct dm_writecache *wc, struct bio *bio, void *data) { void *buf; - unsigned long flags; unsigned size; int rw = bio_data_dir(bio); unsigned remaining_size = wc->block_size; do { struct bio_vec bv = bio_iter_iovec(bio, bio->bi_iter); - buf = bvec_kmap_irq(&bv, &flags); + buf = bvec_kmap_local(&bv); size = bv.bv_len; if (unlikely(size > remaining_size)) size = remaining_size; @@ -1239,7 +1238,7 @@ static void bio_copy_block(struct dm_writecache *wc, struct bio *bio, void *data memcpy_flushcache_optimized(data, buf, size); } - bvec_kunmap_irq(buf, &flags); + kunmap_local(buf); data = (char *)data + size; remaining_size -= size; From patchwork Tue Jul 27 05:56:39 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 12401661 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=-16.7 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,URIBL_BLOCKED,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 93B27C4338F for ; Tue, 27 Jul 2021 06:12:32 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 74AD7610E9 for ; Tue, 27 Jul 2021 06:12:32 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235063AbhG0GMa (ORCPT ); Tue, 27 Jul 2021 02:12:30 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:47268 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234489AbhG0GM1 (ORCPT ); Tue, 27 Jul 2021 02:12:27 -0400 Received: from casper.infradead.org (casper.infradead.org [IPv6:2001:8b0:10b:1236::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 453EDC061757; Mon, 26 Jul 2021 23:12:28 -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=k7hxGRm8Jl8QZ0E+0tTGTFXB/cUrDbqKzMcpkCKTcVM=; b=qOzgVuer/l+JjRHTjrfejC5H0c kIMxSXO0tc6EKwb6Paj46WFFsvihRo46zwbCF6u/ox0BMTbvyvAkW82c7/W6c01w8Vli8sHT1oHEA igqhLTnaHPhM/mX+2TDHlkNVqOGfz5/ewuc/R6Aj36elBnj1YRRk7IC3dfDBzWEs1YYU5mwd8n8pg SGi3KEDr8pOsJLQTAki2hI5qmv66GCxlb2/O5Mt/QwfUX6374VGGcTB9Dw/CvsJjJ3bsXqEtOp+lb 5orgIQsSdB41M8ETuicBH7S9MNgZTy8gGIDsli7Of9vn298FB8wCc1suaQz913KTRSPKEnwwyYG/K UE3vUmqw==; Received: from [2001:4bb8:184:87c5:b7fb:1299:a9e5:ff56] (helo=localhost) by casper.infradead.org with esmtpsa (Exim 4.94.2 #2 (Red Hat Linux)) id 1m8GG9-00Ej14-Eo; Tue, 27 Jul 2021 06:08:41 +0000 From: Christoph Hellwig To: Jens Axboe , Thomas Gleixner Cc: Thomas Bogendoerfer , Andrew Morton , 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, "Martin K . Petersen" Subject: [PATCH 08/15] ps3disk: use memcpy_{from,to}_bvec Date: Tue, 27 Jul 2021 07:56:39 +0200 Message-Id: <20210727055646.118787-9-hch@lst.de> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20210727055646.118787-1-hch@lst.de> References: <20210727055646.118787-1-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 Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org Use the bvec helpers instead of open coding the copy. Signed-off-by: Christoph Hellwig Reviewed-by: Martin K. Petersen Tested-by: Geoff Levand --- drivers/block/ps3disk.c | 18 ++---------------- 1 file changed, 2 insertions(+), 16 deletions(-) diff --git a/drivers/block/ps3disk.c b/drivers/block/ps3disk.c index f374ea2c67ce..8d51efbe045d 100644 --- a/drivers/block/ps3disk.c +++ b/drivers/block/ps3disk.c @@ -83,26 +83,12 @@ static void ps3disk_scatter_gather(struct ps3_storage_device *dev, unsigned int offset = 0; struct req_iterator iter; struct bio_vec bvec; - unsigned int i = 0; - size_t size; - void *buf; rq_for_each_segment(bvec, req, iter) { - unsigned long flags; - dev_dbg(&dev->sbd.core, "%s:%u: bio %u: %u sectors from %llu\n", - __func__, __LINE__, i, bio_sectors(iter.bio), - iter.bio->bi_iter.bi_sector); - - size = bvec.bv_len; - buf = bvec_kmap_irq(&bvec, &flags); if (gather) - memcpy(dev->bounce_buf+offset, buf, size); + memcpy_from_bvec(dev->bounce_buf + offset, &bvec); else - memcpy(buf, dev->bounce_buf+offset, size); - offset += size; - flush_kernel_dcache_page(bvec.bv_page); - bvec_kunmap_irq(buf, &flags); - i++; + memcpy_to_bvec(&bvec, dev->bounce_buf + offset); } } From patchwork Tue Jul 27 05:56:40 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 12401663 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=-16.7 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,URIBL_BLOCKED,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 59AA9C432BE for ; Tue, 27 Jul 2021 06:14:42 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 436816112F for ; Tue, 27 Jul 2021 06:14:42 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235657AbhG0GOk (ORCPT ); Tue, 27 Jul 2021 02:14:40 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:47806 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235691AbhG0GOg (ORCPT ); Tue, 27 Jul 2021 02:14:36 -0400 Received: from casper.infradead.org (casper.infradead.org [IPv6:2001:8b0:10b:1236::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 34891C061757; Mon, 26 Jul 2021 23:14:37 -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=KvHz1dLkYC5ZUL2hHb03Qg2DemCG1Z6Zzn1GTcFQUBY=; b=a+yu9sy6PghFftaPoTKkhmBu5/ CfARq0842a7BTQyHfBU+z1RySnyknYjyRWxNB6+WZg0C2IdtY2Djud+04PneuVbafmTMjwkNd8BZw fxUp2VRNv8jX2RIrAkPFWMABFV66k/VJ6J4TcypvaiWHLnIrK7Zusi4qUINkQRTrlWKxW0AslG8sx 7+Z5pLD8ZSMtmFxXIdj9GTvQYjcSzuWeZYzLsInOrs2xf+Nr6v0pXeQu7ABSLSKa8R1dCjDkyka93 bxhkUhXOjLACoaqhfaQRJjp0fa4vK44AbnRzLyYZG6r7oN0J0AhKSWBfPgzWADCDIPSO2TCZKkDDW y9LKYvVQ==; Received: from [2001:4bb8:184:87c5:b7fb:1299:a9e5:ff56] (helo=localhost) by casper.infradead.org with esmtpsa (Exim 4.94.2 #2 (Red Hat Linux)) id 1m8GHj-00Ej6t-Dn; Tue, 27 Jul 2021 06:10:20 +0000 From: Christoph Hellwig To: Jens Axboe , Thomas Gleixner Cc: Thomas Bogendoerfer , Andrew Morton , 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, "Martin K . Petersen" Subject: [PATCH 09/15] block: remove bvec_kmap_irq and bvec_kunmap_irq Date: Tue, 27 Jul 2021 07:56:40 +0200 Message-Id: <20210727055646.118787-10-hch@lst.de> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20210727055646.118787-1-hch@lst.de> References: <20210727055646.118787-1-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 Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org These two helpers are entirely unused now. Signed-off-by: Christoph Hellwig Reviewed-by: Martin K. Petersen --- include/linux/bio.h | 42 ------------------------------------------ 1 file changed, 42 deletions(-) diff --git a/include/linux/bio.h b/include/linux/bio.h index 2203b686e1f0..7b5f65a81f2b 100644 --- a/include/linux/bio.h +++ b/include/linux/bio.h @@ -5,7 +5,6 @@ #ifndef __LINUX_BIO_H #define __LINUX_BIO_H -#include #include #include /* struct bio, bio_vec and BIO_* flags are defined in blk_types.h */ @@ -519,47 +518,6 @@ static inline void bio_clone_blkg_association(struct bio *dst, struct bio *src) { } #endif /* CONFIG_BLK_CGROUP */ -#ifdef CONFIG_HIGHMEM -/* - * remember never ever reenable interrupts between a bvec_kmap_irq and - * bvec_kunmap_irq! - */ -static inline char *bvec_kmap_irq(struct bio_vec *bvec, unsigned long *flags) -{ - unsigned long addr; - - /* - * might not be a highmem page, but the preempt/irq count - * balancing is a lot nicer this way - */ - local_irq_save(*flags); - addr = (unsigned long) kmap_atomic(bvec->bv_page); - - BUG_ON(addr & ~PAGE_MASK); - - return (char *) addr + bvec->bv_offset; -} - -static inline void bvec_kunmap_irq(char *buffer, unsigned long *flags) -{ - unsigned long ptr = (unsigned long) buffer & PAGE_MASK; - - kunmap_atomic((void *) ptr); - local_irq_restore(*flags); -} - -#else -static inline char *bvec_kmap_irq(struct bio_vec *bvec, unsigned long *flags) -{ - return page_address(bvec->bv_page) + bvec->bv_offset; -} - -static inline void bvec_kunmap_irq(char *buffer, unsigned long *flags) -{ - *flags = 0; -} -#endif - /* * BIO list management for use by remapping drivers (e.g. DM or MD) and loop. * From patchwork Tue Jul 27 05:56:41 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 12401707 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=-16.7 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,URIBL_BLOCKED,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 A1F95C432BE for ; Tue, 27 Jul 2021 06:16:37 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 88415610A0 for ; Tue, 27 Jul 2021 06:16:37 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235041AbhG0GQf (ORCPT ); Tue, 27 Jul 2021 02:16:35 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:48344 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235508AbhG0GQd (ORCPT ); Tue, 27 Jul 2021 02:16:33 -0400 Received: from casper.infradead.org (casper.infradead.org [IPv6:2001:8b0:10b:1236::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 78682C061757; Mon, 26 Jul 2021 23:16:33 -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=F8YSvZx2lzuf6bXkI+L9ZUk8MKmM0LIxZKRYuYEBKDQ=; b=jVxQg207NT9/HxqG9tgVEP7G4w 7pC1RdHN5aFBqRsZcF3qwjF8E9Usa8zDHEZfz45QC7LPnTVyG33UWMeh15AF5po+8Cjz/2fRVzXLY HnE7eTZwDRu86s540KYvdZqd15H5WxOUm2hlMoHzIexUFqR0zSBpPorn5fus4uvWt9gfy42q7/DEk llUCA0zfayDcOCW/MzyFuPAs8n97oXJUr1HBvTy9tlN7a6v/ovRPnPZQAHOtkgSeMKch7Qct7/zy3 I30QP0iX125ZtnOTIZgGALBYrQiONXgP9sMlToSfHGDva+z7gkTzDUz7Xf8tLQ5CxoDyrdqhlFiyv RafRU3CA==; Received: from [2001:4bb8:184:87c5:b7fb:1299:a9e5:ff56] (helo=localhost) by casper.infradead.org with esmtpsa (Exim 4.94.2 #2 (Red Hat Linux)) id 1m8GJ5-00EjBT-Sc; Tue, 27 Jul 2021 06:11:48 +0000 From: Christoph Hellwig To: Jens Axboe , Thomas Gleixner Cc: Thomas Bogendoerfer , Andrew Morton , 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, "Martin K . Petersen" Subject: [PATCH 10/15] block: rewrite bio_copy_data_iter to use bvec_kmap_local and memcpy_to_bvec Date: Tue, 27 Jul 2021 07:56:41 +0200 Message-Id: <20210727055646.118787-11-hch@lst.de> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20210727055646.118787-1-hch@lst.de> References: <20210727055646.118787-1-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 Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org Use the proper helpers instead of open coding the copy. Signed-off-by: Christoph Hellwig Reviewed-by: Martin K. Petersen --- block/bio.c | 28 ++++++++-------------------- 1 file changed, 8 insertions(+), 20 deletions(-) diff --git a/block/bio.c b/block/bio.c index 2e436bccb1e2..0c89fa2f7a85 100644 --- a/block/bio.c +++ b/block/bio.c @@ -1186,27 +1186,15 @@ EXPORT_SYMBOL(bio_advance); void bio_copy_data_iter(struct bio *dst, struct bvec_iter *dst_iter, struct bio *src, struct bvec_iter *src_iter) { - struct bio_vec src_bv, dst_bv; - void *src_p, *dst_p; - unsigned bytes; - while (src_iter->bi_size && dst_iter->bi_size) { - src_bv = bio_iter_iovec(src, *src_iter); - dst_bv = bio_iter_iovec(dst, *dst_iter); - - bytes = min(src_bv.bv_len, dst_bv.bv_len); - - src_p = kmap_atomic(src_bv.bv_page); - dst_p = kmap_atomic(dst_bv.bv_page); - - memcpy(dst_p + dst_bv.bv_offset, - src_p + src_bv.bv_offset, - bytes); - - kunmap_atomic(dst_p); - kunmap_atomic(src_p); - - flush_dcache_page(dst_bv.bv_page); + struct bio_vec src_bv = bio_iter_iovec(src, *src_iter); + struct bio_vec dst_bv = bio_iter_iovec(dst, *dst_iter); + unsigned int bytes = min(src_bv.bv_len, dst_bv.bv_len); + void *src_buf; + + src_buf = bvec_kmap_local(&src_bv); + memcpy_to_bvec(&dst_bv, src_buf); + kunmap_local(src_buf); bio_advance_iter_single(src, src_iter, bytes); bio_advance_iter_single(dst, dst_iter, bytes); From patchwork Tue Jul 27 05:56:42 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 12401709 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=-16.7 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,URIBL_BLOCKED,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 2E0D3C4320A for ; Tue, 27 Jul 2021 06:18:43 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 0EDED610A0 for ; Tue, 27 Jul 2021 06:18:43 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235183AbhG0GSl (ORCPT ); Tue, 27 Jul 2021 02:18:41 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:48842 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234905AbhG0GSl (ORCPT ); Tue, 27 Jul 2021 02:18:41 -0400 Received: from casper.infradead.org (casper.infradead.org [IPv6:2001:8b0:10b:1236::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 97E2CC061757; Mon, 26 Jul 2021 23:18:41 -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=44bMn9sQsnAqHSq0Ad2Laa9gOVD3MbwUdF/8MEGZRgI=; b=SqQd/rUbSnUsVAVYT9i6GdUHG9 uEK6Te8F76Lna1DRgGRno2YLB2xw2x2FKU+CIgohHdvSUus40dCSkU2gPCnWeG2G34MjyEEWDTaov L5fsNT6ysOQox/P+bMhiOqERnNhHX149FVjoAbBf6KjtkcgciLVE7K2U20iali5dcl/Ee4BUPrEf0 J4bjn8D8ix24lDshE2VGPJSq9/ERJIDNyqLyFZesB/ArDaLK7JdPoJTT344b2fkVv8f63LJq4Zg3P Y5NUV+OAHnVQgnKmGWKu4INbz2Whp2wffZK+IaXfqAmfKPbP0hbtcCSx+NNZqquurqWfD864OHqBs bphQAYFA==; Received: from [2001:4bb8:184:87c5:b7fb:1299:a9e5:ff56] (helo=localhost) by casper.infradead.org with esmtpsa (Exim 4.94.2 #2 (Red Hat Linux)) id 1m8GKX-00EjGF-Gl; Tue, 27 Jul 2021 06:13:30 +0000 From: Christoph Hellwig To: Jens Axboe , Thomas Gleixner Cc: Thomas Bogendoerfer , Andrew Morton , 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, "Martin K . Petersen" Subject: [PATCH 11/15] block: use memcpy_to_bvec in copy_to_high_bio_irq Date: Tue, 27 Jul 2021 07:56:42 +0200 Message-Id: <20210727055646.118787-12-hch@lst.de> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20210727055646.118787-1-hch@lst.de> References: <20210727055646.118787-1-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 Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org Use memcpy_to_bvec instead of opencoding the logic. Signed-off-by: Christoph Hellwig Reviewed-by: Martin K. Petersen --- block/bounce.c | 20 ++------------------ 1 file changed, 2 insertions(+), 18 deletions(-) diff --git a/block/bounce.c b/block/bounce.c index 94081e013c58..7e9e666c04dc 100644 --- a/block/bounce.c +++ b/block/bounce.c @@ -67,18 +67,6 @@ static __init int init_emergency_pool(void) __initcall(init_emergency_pool); -/* - * highmem version, map in to vec - */ -static void bounce_copy_vec(struct bio_vec *to, unsigned char *vfrom) -{ - unsigned char *vto; - - vto = kmap_atomic(to->bv_page); - memcpy(vto + to->bv_offset, vfrom, to->bv_len); - kunmap_atomic(vto); -} - /* * Simple bounce buffer support for highmem pages. Depending on the * queue gfp mask set, *to may or may not be a highmem page. kmap it @@ -86,7 +74,6 @@ static void bounce_copy_vec(struct bio_vec *to, unsigned char *vfrom) */ static void copy_to_high_bio_irq(struct bio *to, struct bio *from) { - unsigned char *vfrom; struct bio_vec tovec, fromvec; struct bvec_iter iter; /* @@ -104,11 +91,8 @@ static void copy_to_high_bio_irq(struct bio *to, struct bio *from) * been modified by the block layer, so use the original * copy, bounce_copy_vec already uses tovec->bv_len */ - vfrom = page_address(fromvec.bv_page) + - tovec.bv_offset; - - bounce_copy_vec(&tovec, vfrom); - flush_dcache_page(tovec.bv_page); + memcpy_to_bvec(&tovec, page_address(fromvec.bv_page) + + tovec.bv_offset); } bio_advance_iter(from, &from_iter, tovec.bv_len); } From patchwork Tue Jul 27 05:56:43 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 12401711 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=-16.7 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,URIBL_BLOCKED,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 0D852C43216 for ; Tue, 27 Jul 2021 06:20:10 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id F021F61108 for ; Tue, 27 Jul 2021 06:20:09 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235739AbhG0GUH (ORCPT ); Tue, 27 Jul 2021 02:20:07 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:49130 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235723AbhG0GTx (ORCPT ); Tue, 27 Jul 2021 02:19:53 -0400 Received: from casper.infradead.org (casper.infradead.org [IPv6:2001:8b0:10b:1236::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 519A1C061757; Mon, 26 Jul 2021 23:19:54 -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=rX7drtdaBtTt+oUMB7i7NB3GQLkG9veEPdnbKTIN9Nc=; b=h5Nh6boXqyqKbrcu+tlfPSrCXh VF2tSW60oXkDeGf4l1TXTSjnwO+vMl9frgs1qHBZCFfeIGWSopNaafY0XAW+op+iwVhxjYNEuBo9r U6yyPSPuXVKbUvvBSklZVwi94j079LB+TEkL2I7bPDMlvdx7veNFjr/FDbae9/V62E7Kz5/Dh5uB5 eL17xHcwEIDbGwVKvrtnJWaHmQmnegnpG0DIPb/GhRAB5378OZIU1PsaihsJ2oufmCXLLXD/10BWZ aWXkLsEJcq5UqEnkkk5kxSHymlnz9VtpWaxkCMD4AVRHgkf23j4GrgAsd9Q0JItvIYFBRg6KhsgC9 2/mEjzDA==; Received: from [2001:4bb8:184:87c5:b7fb:1299:a9e5:ff56] (helo=localhost) by casper.infradead.org with esmtpsa (Exim 4.94.2 #2 (Red Hat Linux)) id 1m8GMn-00EjNF-Gn; Tue, 27 Jul 2021 06:15:42 +0000 From: Christoph Hellwig To: Jens Axboe , Thomas Gleixner Cc: Thomas Bogendoerfer , Andrew Morton , 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, "Martin K . Petersen" Subject: [PATCH 12/15] block: use memcpy_from_bvec in bio_copy_kern_endio_read Date: Tue, 27 Jul 2021 07:56:43 +0200 Message-Id: <20210727055646.118787-13-hch@lst.de> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20210727055646.118787-1-hch@lst.de> References: <20210727055646.118787-1-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 Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org Use memcpy_from_bvec instead of open coding the logic. Signed-off-by: Christoph Hellwig Reviewed-by: Martin K. Petersen --- block/blk-map.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/block/blk-map.c b/block/blk-map.c index 3743158ddaeb..d1448aaad980 100644 --- a/block/blk-map.c +++ b/block/blk-map.c @@ -400,7 +400,7 @@ static void bio_copy_kern_endio_read(struct bio *bio) struct bvec_iter_all iter_all; bio_for_each_segment_all(bvec, bio, iter_all) { - memcpy(p, page_address(bvec->bv_page), bvec->bv_len); + memcpy_from_bvec(p, bvec); p += bvec->bv_len; } From patchwork Tue Jul 27 05:56:44 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 12401787 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=-16.7 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,URIBL_BLOCKED,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 2D746C4320E for ; Tue, 27 Jul 2021 06:21:28 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 15F2B610D2 for ; Tue, 27 Jul 2021 06:21:28 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235723AbhG0GVZ (ORCPT ); Tue, 27 Jul 2021 02:21:25 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:49482 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235687AbhG0GVY (ORCPT ); Tue, 27 Jul 2021 02:21:24 -0400 Received: from casper.infradead.org (casper.infradead.org [IPv6:2001:8b0:10b:1236::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 1D35EC061757; Mon, 26 Jul 2021 23:21:25 -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=sXn6CESfDSf/BahsG4NV3slh6uN4B0wtJRs8tnEF8cc=; b=b6S5pZ8YZugLlKe23xpGWHEacK rJWFacoPQ3SENX6BdORb9E1EIGc3LOWsE4ye1Qz6Rgq8/Nm3MTBVab03nLghvWmodnV7qRD/VegZO Nc/IupSnMO3IfYbYzoZfwNNn6+yeGi8Y9YCGFlDZf0azTLuBnqAl1oQSpOrj0Sv6yVgM5lSwRDmY8 CvuIBF+Gw8qXu+JOy3a1xNdamEzFlMT5ihM9JsuTIU4tNaPw6O1G0ro4vkSOVq80/VRw9U8bPwnD9 ZoylSuD5dOIsCODz+KtfXbKyAbewoSj1qW04vbX289FEkjHB5VScjCZC0CcqgX3S4Rg5yJ//TUaz3 0lXuV9kw==; Received: from [2001:4bb8:184:87c5:b7fb:1299:a9e5:ff56] (helo=localhost) by casper.infradead.org with esmtpsa (Exim 4.94.2 #2 (Red Hat Linux)) id 1m8GP5-00EjY8-Up; Tue, 27 Jul 2021 06:18:08 +0000 From: Christoph Hellwig To: Jens Axboe , Thomas Gleixner Cc: Thomas Bogendoerfer , Andrew Morton , 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, "Martin K . Petersen" Subject: [PATCH 13/15] block: use memcpy_from_bvec in __blk_queue_bounce Date: Tue, 27 Jul 2021 07:56:44 +0200 Message-Id: <20210727055646.118787-14-hch@lst.de> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20210727055646.118787-1-hch@lst.de> References: <20210727055646.118787-1-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 Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org Rewrite the actual bounce buffering loop in __blk_queue_bounce to that the memcpy_to_bvec helper can be used to perform the data copies. Signed-off-by: Christoph Hellwig Reviewed-by: Martin K. Petersen --- block/bounce.c | 19 +++++++------------ 1 file changed, 7 insertions(+), 12 deletions(-) diff --git a/block/bounce.c b/block/bounce.c index 7e9e666c04dc..05fc7148489d 100644 --- a/block/bounce.c +++ b/block/bounce.c @@ -239,24 +239,19 @@ void __blk_queue_bounce(struct request_queue *q, struct bio **bio_orig) * because the 'bio' is single-page bvec. */ for (i = 0, to = bio->bi_io_vec; i < bio->bi_vcnt; to++, i++) { - struct page *page = to->bv_page; + struct page *bounce_page; - if (!PageHighMem(page)) + if (!PageHighMem(to->bv_page)) continue; - to->bv_page = mempool_alloc(&page_pool, GFP_NOIO); - inc_zone_page_state(to->bv_page, NR_BOUNCE); + bounce_page = mempool_alloc(&page_pool, GFP_NOIO); + inc_zone_page_state(bounce_page, NR_BOUNCE); if (rw == WRITE) { - char *vto, *vfrom; - - flush_dcache_page(page); - - vto = page_address(to->bv_page) + to->bv_offset; - vfrom = kmap_atomic(page) + to->bv_offset; - memcpy(vto, vfrom, to->bv_len); - kunmap_atomic(vfrom); + flush_dcache_page(to->bv_page); + memcpy_from_bvec(page_address(bounce_page), to); } + to->bv_page = bounce_page; } trace_block_bio_bounce(*bio_orig); From patchwork Tue Jul 27 05:56:45 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 12401789 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=-16.7 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,URIBL_BLOCKED,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 20432C432BE for ; Tue, 27 Jul 2021 06:23:32 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id F2BBE6112F for ; Tue, 27 Jul 2021 06:23:31 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235323AbhG0GXa (ORCPT ); Tue, 27 Jul 2021 02:23:30 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:49948 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234226AbhG0GX3 (ORCPT ); Tue, 27 Jul 2021 02:23:29 -0400 Received: from casper.infradead.org (casper.infradead.org [IPv6:2001:8b0:10b:1236::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 0B584C061757; Mon, 26 Jul 2021 23:23:30 -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=vmvZKiV3C2XvXhBo3odP7QZ8M49Bz7heYP4acVMveO0=; b=rB4aXs6kU2Q+PtSQs2knqMBjSc p8rWaTRGFeB4arxqMQaA3FBTZRkCYwV9mHVUhkZrMbzGktmTiyyTWLbcJHLPZ3ySAe11OFiG7yNXk YOMARZlXWZ8axC2fHl0cIzJYc22xSMNXBfV2ZN+Dca082+wqVVhaeKUzAdR2/cbN/f/SWXOuJYDrJ /OEtsEEv6+0w2RsYVT6/EHa4KmD63/h0jcYg5CEBmQVF/rMqEKsQUkbTT49LGSA5oCgrd2cSQ9VvA FhWo2cQaO9l0TboYZcZPt8qYIE9C9nPpiYJNPutgSA4T0NmhzPFloJcEJnqAOvvlPvAzb4+O0Jb7M 9GqGHBIw==; Received: from [2001:4bb8:184:87c5:b7fb:1299:a9e5:ff56] (helo=localhost) by casper.infradead.org with esmtpsa (Exim 4.94.2 #2 (Red Hat Linux)) id 1m8GR0-00Ejhc-IJ; Tue, 27 Jul 2021 06:19:36 +0000 From: Christoph Hellwig To: Jens Axboe , Thomas Gleixner Cc: Thomas Bogendoerfer , Andrew Morton , 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, "Martin K . Petersen" Subject: [PATCH 14/15] block: use bvec_kmap_local in t10_pi_type1_{prepare,complete} Date: Tue, 27 Jul 2021 07:56:45 +0200 Message-Id: <20210727055646.118787-15-hch@lst.de> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20210727055646.118787-1-hch@lst.de> References: <20210727055646.118787-1-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 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 Reviewed-by: Martin K. Petersen --- block/t10-pi.c | 16 ++++++---------- 1 file changed, 6 insertions(+), 10 deletions(-) diff --git a/block/t10-pi.c b/block/t10-pi.c index d910534b3a41..00c203b2a921 100644 --- a/block/t10-pi.c +++ b/block/t10-pi.c @@ -147,11 +147,10 @@ static void t10_pi_type1_prepare(struct request *rq) break; bip_for_each_vec(iv, bip, iter) { - void *p, *pmap; unsigned int j; + void *p; - pmap = kmap_atomic(iv.bv_page); - p = pmap + iv.bv_offset; + p = bvec_kmap_local(&iv); for (j = 0; j < iv.bv_len; j += tuple_sz) { struct t10_pi_tuple *pi = p; @@ -161,8 +160,7 @@ static void t10_pi_type1_prepare(struct request *rq) ref_tag++; p += tuple_sz; } - - kunmap_atomic(pmap); + kunmap_local(p); } bip->bip_flags |= BIP_MAPPED_INTEGRITY; @@ -195,11 +193,10 @@ static void t10_pi_type1_complete(struct request *rq, unsigned int nr_bytes) struct bvec_iter iter; bip_for_each_vec(iv, bip, iter) { - void *p, *pmap; unsigned int j; + void *p; - pmap = kmap_atomic(iv.bv_page); - p = pmap + iv.bv_offset; + p = bvec_kmap_local(&iv); for (j = 0; j < iv.bv_len && intervals; j += tuple_sz) { struct t10_pi_tuple *pi = p; @@ -210,8 +207,7 @@ static void t10_pi_type1_complete(struct request *rq, unsigned int nr_bytes) intervals--; p += tuple_sz; } - - kunmap_atomic(pmap); + kunmap_local(p); } } } From patchwork Tue Jul 27 05:56:46 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 12401839 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=-16.7 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,URIBL_BLOCKED,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 6426FC43214 for ; Tue, 27 Jul 2021 06:25:16 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 4B475610D2 for ; Tue, 27 Jul 2021 06:25:16 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235368AbhG0GZO (ORCPT ); Tue, 27 Jul 2021 02:25:14 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:50334 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233553AbhG0GZN (ORCPT ); Tue, 27 Jul 2021 02:25:13 -0400 Received: from casper.infradead.org (casper.infradead.org [IPv6:2001:8b0:10b:1236::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 27DF5C061757; Mon, 26 Jul 2021 23:25:14 -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=jFuNMKcRbcVnR+JgRWAcFH4S0wPCM0LhDW7OHMhdenM=; b=ZlPtXIOVwXE0aeEVhqPQ0pLddO rr5EooQEZ6+S9JLHdS21sBPJ1zXlGbUobbMssMsOIoajU/cNBcLZJUaVK4Cq1Vob1y9rvjIvfaLP2 jLpBaotC3LPfh4M8MsZaVgWQopzUxvAs4oPgX7/CsaH6Tg3bzUa+ZnsFVTsnGZ8SKQM2ObR5Ktt06 WsUeEtBSIekhebyDfQ2PaCHHjj4MGhZDYWrXqhTPqVBQoOEXwnJPZUVITViJeIx9mu07++3CnzVuD /ZSLyXN29uMKgcHN4h+6S9tjvi3olbm75aJXSRMnpdhi9hwLYuajBpxC0wX2qwNMJvHPzgYD+vaqb 7LUmYtkA==; Received: from [2001:4bb8:184:87c5:b7fb:1299:a9e5:ff56] (helo=localhost) by casper.infradead.org with esmtpsa (Exim 4.94.2 #2 (Red Hat Linux)) id 1m8GRw-00Ejpq-EQ; Tue, 27 Jul 2021 06:20:46 +0000 From: Christoph Hellwig To: Jens Axboe , Thomas Gleixner Cc: Thomas Bogendoerfer , Andrew Morton , 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, "Martin K . Petersen" Subject: [PATCH 15/15] block: use bvec_kmap_local in bio_integrity_process Date: Tue, 27 Jul 2021 07:56:46 +0200 Message-Id: <20210727055646.118787-16-hch@lst.de> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20210727055646.118787-1-hch@lst.de> References: <20210727055646.118787-1-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 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 Reviewed-by: Martin K. Petersen --- 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; }