From patchwork Wed May 31 11:50:24 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Johannes Thumshirn X-Patchwork-Id: 13262089 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 4619CC77B7A for ; Wed, 31 May 2023 11:51:17 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235582AbjEaLvQ (ORCPT ); Wed, 31 May 2023 07:51:16 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:49042 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235311AbjEaLvP (ORCPT ); Wed, 31 May 2023 07:51:15 -0400 Received: from esa2.hgst.iphmx.com (esa2.hgst.iphmx.com [68.232.143.124]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id DC22312B; Wed, 31 May 2023 04:50:55 -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=1685533855; x=1717069855; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=aVyQaNpmt9Kkl+oyJUnsIhsYw5Ss9yLQpVI9KGKLjIM=; b=m5pC/y1RCSGma2G7bn5DhfzzCrSdK8Cy9Nllu21sE2bio0YA7Qr9N9TY 2RtQmvoq5wKfEbN6GMWOt7ztN76jwTaeFqnnrwVxnEp6HotvXqSlVRFY3 SzD8POX2jadrB+gzPGmh42S5mfcRgkuK1Shj86eoh1jP2lr8rinwoQvrV Rz4EbqOq856He5AeXbJfBWIXxrrbf4EBZDCwsqdyJch8Ye52a5OlzF1Ir J8D35e086j2zoL4bP5KRCicpI/zClzgXSMm0oJZdu/J1Z6gQ6IDb0UI0t MFfTuKCRjKWdntQQaZ9BNba2knUWsyo1Nh8BeeMyzu5INxgOUYXfTFpWd A==; X-IronPort-AV: E=Sophos;i="6.00,207,1681142400"; d="scan'208";a="336547906" Received: from uls-op-cesaip01.wdc.com (HELO uls-op-cesaep01.wdc.com) ([199.255.45.14]) by ob1.hgst.iphmx.com with ESMTP; 31 May 2023 19:50:55 +0800 IronPort-SDR: r/NdG70YJOvpPUlmRqn+dBV/7lUUoZFAzENr4c0DLbrE8aE0HbifOkMoeh4UmXkENo8P/Fvw8N TwNjl2HIeQ2vTzaP4gq9e2kEqNqfSEm42x8C+D+S+RjnOL4SkiV6oi7AnYVCZKxGlfr24U5dZ8 aNXUP0yG+QU6z/zRekX9ahBKuPETi4a0VxaJk58xddoipleBuJDtkE6WmFXdkAgLTFlIZWxxM2 nvu2fj0Q/PSpciCNHVfeMS4s19O8oKoZr6FEmEIuDnIzUb/wed2FVkUo/3pWzcUXUrv10TzF8H HFs= 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; 31 May 2023 04:05:48 -0700 IronPort-SDR: KMtKG3JscatUziqjy7U7g8MSjyjZduOIxvyAtHaf8bQdNgmZPg/ejiyqNoiFm9Z5/dVstQGVpT gUAVKI2lRv/nFQcZFAJUyKS1dF5x+TDBoaUIItPfUSTYOw4cP+Lp6QU2dYeMMHn4BfmSwznJBE LF0WLyvj8M+QVpz9qWs5bLZ0PjrwLDk7VacaXMR7BDRrt8W4RUepJm4j8fTf+uh4aQsOebPGEQ VyepEwzZ/olV1vKjxxd7loGn5w/rIFNdqqFPwuOl/iBlTWTDr5y1W7oR6Mm1kXTtRz+syTHmsM o3U= WDCIronportException: Internal Received: from unknown (HELO redsun91.ssa.fujisawa.hgst.com) ([10.149.66.6]) by uls-op-cesaip02.wdc.com with ESMTP; 31 May 2023 04:50:53 -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 , gouha7@uniontech.com, Johannes Thumshirn , Damien Le Moal Subject: [PATCH v7 01/20] swap: use __bio_add_page to add page to bio Date: Wed, 31 May 2023 04:50:24 -0700 Message-Id: <5bdafd9de806b2dab92302b30eb7a3a5f10c37d9.1685532726.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-raid@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 Reviewed-by: Christoph Hellwig Signed-off-by: Johannes Thumshirn --- 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); }