From mboxrd@z Thu Jan 1 00:00:00 1970 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 339A7E7C4F1 for ; Wed, 4 Oct 2023 20:22:49 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233208AbjJDUWu (ORCPT ); Wed, 4 Oct 2023 16:22:50 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:57932 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S244908AbjJDUW2 (ORCPT ); Wed, 4 Oct 2023 16:22:28 -0400 Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D802F172B for ; Wed, 4 Oct 2023 13:21:30 -0700 (PDT) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 331A8C433C7; Wed, 4 Oct 2023 20:21:30 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linux-foundation.org; s=korg; t=1696450890; bh=zbDSZ7TadnexR2e+baMUDTg21l6h4BTs7v/X7EdtRr4=; h=Date:To:From:Subject:From; b=RozPrUI1e1+C6N31lVLUg2alIso9NcA23zW86LClEEgrls46tMmIwqedxO9nN7HnS QCFWyX3bKyTt3byM12O68GZw3FNW/hF3B+7yQBiPSJggVuUndbdFlk/V05cvRo72Qd Odya6NYhhnGBNDO4W3KcpLQrsnhfyN3C9UfZ7+4U= Date: Wed, 04 Oct 2023 13:21:28 -0700 To: mm-commits@vger.kernel.org, teawater@antgroup.com, willy@infradead.org, akpm@linux-foundation.org From: Andrew Morton Subject: [merged mm-stable] buffer-use-bdev_getblk-to-avoid-memory-reclaim-in-readahead-path.patch removed from -mm tree Message-Id: <20231004202130.331A8C433C7@smtp.kernel.org> Precedence: bulk Reply-To: linux-kernel@vger.kernel.org List-ID: X-Mailing-List: mm-commits@vger.kernel.org The quilt patch titled Subject: buffer: use bdev_getblk() to avoid memory reclaim in readahead path has been removed from the -mm tree. Its filename was buffer-use-bdev_getblk-to-avoid-memory-reclaim-in-readahead-path.patch This patch was dropped because it was merged into the mm-stable branch of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm ------------------------------------------------------ From: "Matthew Wilcox (Oracle)" Subject: buffer: use bdev_getblk() to avoid memory reclaim in readahead path Date: Thu, 14 Sep 2023 16:00:07 +0100 __getblk() adds __GFP_NOFAIL, which is unnecessary for readahead; we're quite comfortable with the possibility that we may not get a bh back. Switch to bdev_getblk() which does not include __GFP_NOFAIL. Link: https://lkml.kernel.org/r/20230914150011.843330-5-willy@infradead.org Signed-off-by: Matthew Wilcox (Oracle) Cc: Hui Zhu Signed-off-by: Andrew Morton --- fs/buffer.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) --- a/fs/buffer.c~buffer-use-bdev_getblk-to-avoid-memory-reclaim-in-readahead-path +++ a/fs/buffer.c @@ -1465,7 +1465,9 @@ EXPORT_SYMBOL(__getblk_gfp); */ void __breadahead(struct block_device *bdev, sector_t block, unsigned size) { - struct buffer_head *bh = __getblk(bdev, block, size); + struct buffer_head *bh = bdev_getblk(bdev, block, size, + GFP_NOWAIT | __GFP_MOVABLE); + if (likely(bh)) { bh_readahead(bh, REQ_RAHEAD); brelse(bh); _ Patches currently in -mm which might be from willy@infradead.org are mm-make-lock_folio_maybe_drop_mmap-vma-lock-aware.patch mm-call-wp_page_copy-under-the-vma-lock.patch mm-handle-shared-faults-under-the-vma-lock.patch mm-handle-cow-faults-under-the-vma-lock.patch mm-handle-read-faults-under-the-vma-lock.patch mm-handle-write-faults-to-ro-pages-under-the-vma-lock.patch