From patchwork Wed Mar 29 17:05:47 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Johannes Thumshirn X-Patchwork-Id: 13192930 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 E8A66C77B6E for ; Wed, 29 Mar 2023 17:06:39 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231290AbjC2RGi (ORCPT ); Wed, 29 Mar 2023 13:06:38 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:53538 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230504AbjC2RGd (ORCPT ); Wed, 29 Mar 2023 13:06:33 -0400 Received: from esa4.hgst.iphmx.com (esa4.hgst.iphmx.com [216.71.154.42]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 6868555BC; Wed, 29 Mar 2023 10:06:24 -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=1680109584; x=1711645584; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=TM7IBzNT7/14xTwowvJHPkTQX8VqnD9S2m9y/nmGXPw=; b=Xwh0JsJCSt1Mbiw8pUaNYzPODqAkkbhG3eM6EZK1cR+CncRVqs9RkZwU YgBIVCcN24vsTJGmRm+9ATKoCPxeT8P6reSv+NM3sTh9v3l0e61cn8B26 NvbReEmneeI3RMVlAD8+sHDoMhEAeE3Uz1q3YiJVpIcBxW9p1xxi0H4no hK+4qz8Bn8hDqoGbMHn3jkfNSEK+6D0Dke+IWb732kcKLYn0wbEvhu+Dv haijcQ5ttfLFiZPjgRyZtBBtVFSRL5sCCuCffavq4MLFKk+Y2DstlqEET M+HvIwTBCEKWb7c1hNNuQOEmV2U16SZM3R/oACmYir6PjysmbZbhBB5/x g==; X-IronPort-AV: E=Sophos;i="5.98,301,1673884800"; d="scan'208";a="225092820" Received: from h199-255-45-14.hgst.com (HELO uls-op-cesaep01.wdc.com) ([199.255.45.14]) by ob1.hgst.iphmx.com with ESMTP; 30 Mar 2023 01:06:23 +0800 IronPort-SDR: dr4To9nxU9s57Ky6LhWa8UD7Kd7CaFNOQKkAizSlLviPO1KnlokxmY9H+rKcGBbbNIrg/Kdmq4 RrUKXhYxdM5yDmD9vyeULj/IAHL2C48gpxAgtj4TTU1KmIxyDgjgPUr0ykLSX8jclgRIobJh2a gx0WJhkDhxWXxWCDjXFbUC7STd9cW2Y8iOKXETiahliIdynU4Z0Jful0LsEkDMiTawLNs/fBnD LKvUP8dUFiuZZD6yG7Rzd8+/eekUepcKYWXpFOxqf3FoabQOxsGJzU19dQ5ouZTbxRVsrCLxyr ti0= Received: from uls-op-cesaip01.wdc.com ([10.248.3.36]) by uls-op-cesaep01.wdc.com with ESMTP/TLS/ECDHE-RSA-AES128-GCM-SHA256; 29 Mar 2023 09:22:33 -0700 IronPort-SDR: yyFKbwfOEl8vOCdlm8o/aBoXRqrxQAe/juUDniPmOyA6KC3OO/1kAhsEUEEYLVsoCPHg44tswf U4/t+Eht43hkaug7Qk7+EHXBNakm9gxNEJ3L7TUTHnO6hgxDZl9fUBGyLmIxwdFu7eEHUBHXpO mDw2lAW7wlIEhS9KYrLKfz7UOp4cFL6JpgENGlPck777d5NCTl/Xpkpz9Aa9Jk2kPk7WtKRS1c WhXighkZnqtO4Hr42uzllq0JA5rZq58zNcIHYGF/y9POF5WRGYiU4StYBbSKeJu9G4+2PBGJBo br4= WDCIronportException: Internal Received: from unknown (HELO redsun91.ssa.fujisawa.hgst.com) ([10.149.66.72]) by uls-op-cesaip01.wdc.com with ESMTP; 29 Mar 2023 10:06:22 -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 , David Sterba , linux-btrfs@vger.kernel.org, Johannes Thumshirn Subject: [PATCH 01/19] swap: use __bio_add_page to add page to bio Date: Wed, 29 Mar 2023 10:05:47 -0700 Message-Id: <7849b142e073b20f033e5124a39080f59e5f19d2.1680108414.git.johannes.thumshirn@wdc.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: References: MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@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. Signed-off-by: Johannes Thumshirn Reviewed-by: Damien Le Moal Reviewed-by: Pankaj Raghav --- 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); }