From patchwork Tue May 30 15:49:04 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Johannes Thumshirn X-Patchwork-Id: 13260569 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id ED167C7EE32 for ; Tue, 30 May 2023 15:49:38 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232225AbjE3Ptg (ORCPT ); Tue, 30 May 2023 11:49:36 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39060 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232254AbjE3Pte (ORCPT ); Tue, 30 May 2023 11:49:34 -0400 Received: from esa2.hgst.iphmx.com (esa2.hgst.iphmx.com [68.232.143.124]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id EC2CDC7; Tue, 30 May 2023 08:49:32 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=wdc.com; i=@wdc.com; q=dns/txt; s=dkim.wdc.com; t=1685461772; x=1716997772; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=QmZzem9nS4IdX+YpMPH6/hkU8Q8851NfFydLySYg+TQ=; b=XPH1ltRbN8voOoKhJQCK8AxYv//+XjIYtgHK9vOFeozlhgqT/nwwCfBD ltBUlLzKTag8y5LSDoUaVRmje6L3iRPeGqeD3QypKTOlYB+vA6Jme2qyR OBR2oXUIpJ7SebGFY1KRcxk2v5y6zOiLxkvOVYaxVQTo5KU2CTVOYSti4 MvmjR8kg4OZD0rvcv2oRW6oZwYxyrSJwIsOLj3KV6z3nwr2VJ3flU75kx jdIShBek5szQG4kG+FDaitPYjpCG4DBEskAM/96Wh6yjkz4fJCzQj2+ja ukvWiJw6z82LcQ0c04jUlo09vXJz8/qDMDw5Jj5OIw9huHOCh1F6LKmk2 A==; X-IronPort-AV: E=Sophos;i="6.00,204,1681142400"; d="scan'208";a="336465924" Received: from uls-op-cesaip01.wdc.com (HELO uls-op-cesaep01.wdc.com) ([199.255.45.14]) by ob1.hgst.iphmx.com with ESMTP; 30 May 2023 23:49:32 +0800 IronPort-SDR: GU6mG2PsjNv0TjM9ZZhZYZepoPWuXy+nfWGZ2keFnr3b63X98sSPbWQgo81o5p3n8c8AF9dzVW zVCpL26FJqYk2R8e43EdesImvExs3+kmgF6bIAbKqHA+P4JYJb+llV6eA6LtNcDUj708hvYjqd tyTOQCMDaHVOVP2f7D9yveIbTsNYh4iDH64PtRaqC0n/lfTbmljOYWitoZHAr+7ITgyXNIssg2 +CBUviX8CUyJbTJAUFrBzlpNUdLcl+G5MKT4S/K7Past7mbgaN/BOTd3HhbnQPLX7bgc3QUxX4 nFE= Received: from uls-op-cesaip02.wdc.com ([10.248.3.37]) by uls-op-cesaep01.wdc.com with ESMTP/TLS/ECDHE-RSA-AES128-GCM-SHA256; 30 May 2023 08:04:25 -0700 IronPort-SDR: MYtng4S7szwYjmaxW/lAI1po1aVI+hTjdUIVPGMboe1qhLkMmlIPBx55GCHPb7iFjshgwqgb14 taHOFDWoBB5QsexrzNlhVmGiIcOK+oldoY3/MpOlT3CcL5onketnanRTkYr6ZmC2FvhSM442mz 17UT2jJ9dXq/oFStL90HimJSMt2PrDkDWQR2G05pjD2qMu0xYmDRYB0m13nqKi5P34VcIS4KVl n0sZXsW5hHYHRvULOtbMH2PTcIdjRzQbfuLkG8GBoOKlbeAFN0jwHUkWg8F+PstTBRqzjOtvYO Qiw= WDCIronportException: Internal Received: from unknown (HELO redsun91.ssa.fujisawa.hgst.com) ([10.149.66.6]) by uls-op-cesaip02.wdc.com with ESMTP; 30 May 2023 08:49:29 -0700 From: Johannes Thumshirn To: Jens Axboe Cc: Christoph Hellwig , Hannes Reinecke , Chaitanya Kulkarni , Damien Le Moal , Ming Lei , linux-block@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-mm@kvack.org, dm-devel@redhat.com, Song Liu , linux-raid@vger.kernel.org, Mike Snitzer , Matthew Wilcox , Dave Kleikamp , jfs-discussion@lists.sourceforge.net, cluster-devel@redhat.com, Bob Peterson , Andreas Gruenbacher , Mikulas Patocka , gouhao@uniontech.com, Johannes Thumshirn , Damien Le Moal Subject: [PATCH v6 01/20] swap: use __bio_add_page to add page to bio Date: Tue, 30 May 2023 08:49:04 -0700 Message-Id: <64f8ac179cc54aa316c75aaadd71e107ba12917d.1685461490.git.johannes.thumshirn@wdc.com> X-Mailer: git-send-email 2.40.1 In-Reply-To: References: MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org The swap code only adds a single page to a newly created bio. So use __bio_add_page() to add the page which is guaranteed to succeed in this case. This brings us closer to marking bio_add_page() as __must_check. Reviewed-by: Damien Le Moal Signed-off-by: Johannes Thumshirn Reviewed-by: Christoph Hellwig --- mm/page_io.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/mm/page_io.c b/mm/page_io.c index 87b682d18850..684cd3c7b59b 100644 --- a/mm/page_io.c +++ b/mm/page_io.c @@ -338,7 +338,7 @@ static void swap_writepage_bdev_sync(struct page *page, bio_init(&bio, sis->bdev, &bv, 1, REQ_OP_WRITE | REQ_SWAP | wbc_to_write_flags(wbc)); bio.bi_iter.bi_sector = swap_page_sector(page); - bio_add_page(&bio, page, thp_size(page), 0); + __bio_add_page(&bio, page, thp_size(page), 0); bio_associate_blkg_from_page(&bio, page); count_swpout_vm_event(page); @@ -360,7 +360,7 @@ static void swap_writepage_bdev_async(struct page *page, GFP_NOIO); bio->bi_iter.bi_sector = swap_page_sector(page); bio->bi_end_io = end_swap_bio_write; - bio_add_page(bio, page, thp_size(page), 0); + __bio_add_page(bio, page, thp_size(page), 0); bio_associate_blkg_from_page(bio, page); count_swpout_vm_event(page); @@ -468,7 +468,7 @@ static void swap_readpage_bdev_sync(struct page *page, bio_init(&bio, sis->bdev, &bv, 1, REQ_OP_READ); bio.bi_iter.bi_sector = swap_page_sector(page); - bio_add_page(&bio, page, thp_size(page), 0); + __bio_add_page(&bio, page, thp_size(page), 0); /* * Keep this task valid during swap readpage because the oom killer may * attempt to access it in the page fault retry time check. @@ -488,7 +488,7 @@ static void swap_readpage_bdev_async(struct page *page, bio = bio_alloc(sis->bdev, 1, REQ_OP_READ, GFP_KERNEL); bio->bi_iter.bi_sector = swap_page_sector(page); bio->bi_end_io = end_swap_bio_read; - bio_add_page(bio, page, thp_size(page), 0); + __bio_add_page(bio, page, thp_size(page), 0); count_vm_event(PSWPIN); submit_bio(bio); }