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 kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by smtp.lore.kernel.org (Postfix) with ESMTP id 5B0BBCCA47B for ; Wed, 8 Jun 2022 08:02:35 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id EC14A6B0089; Wed, 8 Jun 2022 04:02:34 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id E4A366B008A; Wed, 8 Jun 2022 04:02:34 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id D11E86B008C; Wed, 8 Jun 2022 04:02:34 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0011.hostedemail.com [216.40.44.11]) by kanga.kvack.org (Postfix) with ESMTP id BB2206B0089 for ; Wed, 8 Jun 2022 04:02:34 -0400 (EDT) Received: from smtpin10.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay08.hostedemail.com (Postfix) with ESMTP id 8E1E8207A7 for ; Wed, 8 Jun 2022 08:02:34 +0000 (UTC) X-FDA: 79554326628.10.3F142A2 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) by imf07.hostedemail.com (Postfix) with ESMTP id 181554004A for ; Wed, 8 Jun 2022 08:02:33 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20210309; h=In-Reply-To:Content-Type:MIME-Version :References:Message-ID:Subject:Cc:To:From:Date:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description; bh=SX9n5EnTUOKOzk0atnH01/6aCdLXi/kHksLRZ+/slrg=; b=jysUfxHITvm5qME5kby7gEknda NniSqrjlYB/5FZ0sOB9SGdPN609Xc7Tio/met/HczsNX9IUlMHrvgiUDv4mHlaFTvBucMZTcxWuFM aGqA9GeGAxtC3R6lF2w/B87y6Wk6GgZNyLeH3AxjbiUcPe9vcD+G8iLkjHXT78FVtD6XmTe1cYmlt ngowBhuCCZ4lWWbh04Jl3QN6dGjrZt3zoJA55lgwd6zmbPrMu2DmXkzmdU0CAIYcq9FAdHR+U6sjS kvj5dDbrm/lmbPQZoKx97x7Y9QNcHlDLf2o8pDHQXCZgt2fdrKxTBoK/16KCB/EAF4EZ/7y1pxpfD Fds+rOEQ==; Received: from hch by bombadil.infradead.org with local (Exim 4.94.2 #2 (Red Hat Linux)) id 1nyqdy-00Bnx0-Jl; Wed, 08 Jun 2022 08:02:22 +0000 Date: Wed, 8 Jun 2022 01:02:22 -0700 From: Christoph Hellwig To: "Matthew Wilcox (Oracle)" Cc: linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, linux-ext4@vger.kernel.org, linux-f2fs-devel@lists.sourceforge.net, linux-mm@kvack.org, linux-nilfs@vger.kernel.org Subject: Re: [PATCH 03/10] ext4: Convert mpage_release_unused_pages() to use filemap_get_folios() Message-ID: References: <20220605193854.2371230-1-willy@infradead.org> <20220605193854.2371230-4-willy@infradead.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20220605193854.2371230-4-willy@infradead.org> X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html X-Rspamd-Server: rspam01 X-Rspamd-Queue-Id: 181554004A Authentication-Results: imf07.hostedemail.com; dkim=pass header.d=infradead.org header.s=bombadil.20210309 header.b=jysUfxHI; dmarc=none; spf=none (imf07.hostedemail.com: domain of BATV+ba9ae8ab3d8ecaf97ba4+6863+infradead.org+hch@bombadil.srs.infradead.org has no SPF policy when checking 198.137.202.133) smtp.mailfrom=BATV+ba9ae8ab3d8ecaf97ba4+6863+infradead.org+hch@bombadil.srs.infradead.org X-Stat-Signature: y8em68m4tzfh6txfsaxc49zaye6w81nb X-Rspam-User: X-HE-Tag: 1654675353-647691 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On Sun, Jun 05, 2022 at 08:38:47PM +0100, Matthew Wilcox (Oracle) wrote: > If the folio is large, it may overlap the beginning or end of the > unused range. If it does, we need to avoid invalidating it. It's never going to be larger for ext4, is it? But either way, those precautions looks fine. Reviewed-by: Christoph Hellwig