From patchwork Thu Apr 20 10:04:40 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Johannes Thumshirn X-Patchwork-Id: 13218340 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 4A567C77B72 for ; Thu, 20 Apr 2023 10:06:37 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234627AbjDTKGf (ORCPT ); Thu, 20 Apr 2023 06:06:35 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:47756 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234457AbjDTKGB (ORCPT ); Thu, 20 Apr 2023 06:06:01 -0400 Received: from mail-wm1-f52.google.com (mail-wm1-f52.google.com [209.85.128.52]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C55182690; Thu, 20 Apr 2023 03:05:52 -0700 (PDT) Received: by mail-wm1-f52.google.com with SMTP id 5b1f17b1804b1-3f0a0c4e505so3521735e9.0; Thu, 20 Apr 2023 03:05:52 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1681985151; x=1684577151; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=s93ifE1gU+0FrrRIOdnaALh6w14X2Hkv+dazvnzybyI=; b=awtxNKrrf4o7r0DPtDHyrqLo/Ql+TjsX7Mb6Ae3KRmQyd1ocAmFbzkpAAakb8XuF6+ Q+rn211GLS9d/i0+MtVnxz3F0Sh8S2TEOZ0zrH1vHlj4WhZdCnmnwzypVXvjVgdk8Mh8 52bNhf+SrfywvAV71cA8HYYANKD4XJN2QlKxn98VqsULkpf9mmhFSqAIbhNqqpFc1IV2 e2m2I24gZTR9IQf9O+9Ufyt92ReixeqxFz53i4kxkE7JSVG8YkMCY34txO4xrvT88C2G Aslo9Y508dHgHePVUs1Iq0CSBbv8wu2TuQWop9UlaHdJaw6k5qHJm3MkC06w6buAccUO /WYA== X-Gm-Message-State: AAQBX9fpeQ2YRGIizUasrHr8GWYJfHTYPEJl29/jCsMPVczaQyYkPqz7 RCB6ZWTPh9s9jm450jvnuL8= X-Google-Smtp-Source: AKy350ZJizpAlK8UcdkIuYKpQ5Y/PZoh+EKKcTgVEjvN6d0zqGLWnY/auHncEOXRAbbDYcB+iyhuyg== X-Received: by 2002:a5d:6149:0:b0:2fb:9dbb:3407 with SMTP id y9-20020a5d6149000000b002fb9dbb3407mr833176wrt.51.1681985151089; Thu, 20 Apr 2023 03:05:51 -0700 (PDT) Received: from localhost.localdomain (aftr-62-216-205-208.dynamic.mnet-online.de. [62.216.205.208]) by smtp.googlemail.com with ESMTPSA id l11-20020a5d674b000000b0030276f42f08sm201410wrw.88.2023.04.20.03.05.49 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 20 Apr 2023 03:05:50 -0700 (PDT) From: Johannes Thumshirn To: axboe@kernel.dk Cc: johannes.thumshirn@wdc.com, agruenba@redhat.com, cluster-devel@redhat.com, damien.lemoal@wdc.com, dm-devel@redhat.com, dsterba@suse.com, hare@suse.de, hch@lst.de, jfs-discussion@lists.sourceforge.net, kch@nvidia.com, linux-block@vger.kernel.org, linux-btrfs@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-mm@kvack.org, linux-raid@vger.kernel.org, ming.lei@redhat.com, rpeterso@redhat.com, shaggy@kernel.org, snitzer@kernel.org, song@kernel.org, willy@infradead.org, Damien Le Moal Subject: [PATCH v4 01/22] swap: use __bio_add_page to add page to bio Date: Thu, 20 Apr 2023 12:04:40 +0200 Message-Id: <20230420100501.32981-2-jth@kernel.org> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230420100501.32981-1-jth@kernel.org> References: <20230420100501.32981-1-jth@kernel.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-raid@vger.kernel.org From: Johannes Thumshirn 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. Signed-off-by: Johannes Thumshirn Reviewed-by: Damien Le Moal --- 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); }