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 X-Spam-Level: X-Spam-Status: No, score=-8.6 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, MENTIONS_GIT_HOSTING,SPF_HELO_NONE,SPF_PASS autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id C3A57C433B4 for ; Tue, 6 Apr 2021 14:41:44 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 6903E61041 for ; Tue, 6 Apr 2021 14:41:44 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 6903E61041 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=infradead.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id F2AEF6B0070; Tue, 6 Apr 2021 10:41:43 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id EDAF16B0080; Tue, 6 Apr 2021 10:41:43 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id DA3136B0083; Tue, 6 Apr 2021 10:41:43 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0158.hostedemail.com [216.40.44.158]) by kanga.kvack.org (Postfix) with ESMTP id BBA9A6B0070 for ; Tue, 6 Apr 2021 10:41:43 -0400 (EDT) Received: from smtpin32.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay05.hostedemail.com (Postfix) with ESMTP id 7982518034AAF for ; Tue, 6 Apr 2021 14:41:43 +0000 (UTC) X-FDA: 78002206086.32.D93E5D6 Received: from casper.infradead.org (casper.infradead.org [90.155.50.34]) by imf01.hostedemail.com (Postfix) with ESMTP id 4797C5001530 for ; Tue, 6 Apr 2021 14:41:42 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.20170209; 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=hUzYdafqUkSxFBGuJk6UxNp58JgCVIdROY5vKcDr6wA=; b=wPjWHq41ZvqO32+B7eUb9ZrmeW s9oNrb7TrioJQD0G2zwsaoSdYeh68OUYdKMN9FRzkhuC6XDTlb7cUP8iDM9h+kzEqhdel6Qquh6a4 D8xlMpik29gkqvJ3HedOv4YiXYWSO0LfCTVEmj30bQ/HB/cX+Qym4iJ5iKcT+PY8+DqjPCnZbtoKf sMUHn0OvfwGnI9wEOn5z8+CI5Me/lQNZzba+/MfoUAMlh7ydgj8d5VBGKLNVZhdJWTMHxBM0Qzik6 w/AV8hh5CTqhCakqb7JKv3Sl5WMx4Qff79xd5RQmJ2X3T97BxvtumXl6bpN0fszPXKlw/LUnbCZny Jqlt3KeA==; Received: from willy by casper.infradead.org with local (Exim 4.94 #2 (Red Hat Linux)) id 1lTmsQ-00Cx9o-RR; Tue, 06 Apr 2021 14:40:27 +0000 Date: Tue, 6 Apr 2021 15:40:22 +0100 From: Matthew Wilcox To: Christoph Hellwig Cc: "Kirill A. Shutemov" , linux-mm@kvack.org, linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-cachefs@redhat.com, linux-afs@lists.infradead.org Subject: Re: [PATCH v6 01/27] mm: Introduce struct folio Message-ID: <20210406144022.GR2531743@casper.infradead.org> References: <20210331184728.1188084-1-willy@infradead.org> <20210331184728.1188084-2-willy@infradead.org> <20210406122918.h5dsnbjhmwpfasf4@box.shutemov.name> <20210406124807.GO2531743@casper.infradead.org> <20210406143150.GA3082513@infradead.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20210406143150.GA3082513@infradead.org> X-Rspamd-Server: rspam01 X-Rspamd-Queue-Id: 4797C5001530 X-Stat-Signature: w7gt6gkt5qx4i7x6ipekfxi78gt4bb78 Received-SPF: none (infradead.org>: No applicable sender policy available) receiver=imf01; identity=mailfrom; envelope-from=""; helo=casper.infradead.org; client-ip=90.155.50.34 X-HE-DKIM-Result: pass/pass X-HE-Tag: 1617720102-481033 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 Tue, Apr 06, 2021 at 03:31:50PM +0100, Christoph Hellwig wrote: > > > As Christoph, I'm not a fan of this :/ > > > > What would you prefer? > > Looking at your full folio series on git.infradead.org, there are a > total of 12 references to non-page members of struct folio, assuming > my crude grep that expects a folio to be named folio did not miss any. Hmm ... I count more in the filesystems: fs/afs/dir.c: struct afs_vnode *dvnode = AFS_FS_I(folio->page.mapping->host); fs/afs/dir.c: _enter("{%lu},%zu,%zu", folio->page.index, offset, length); fs/afs/file.c: _enter("{%lu},%zu,%zu", folio->page.index, offset, length); fs/afs/write.c: folio->page.index); fs/befs/linuxvfs.c: struct inode *inode = folio->page.mapping->host; fs/btrfs/disk-io.c: tree = &BTRFS_I(folio->page.mapping->host)->io_tree; fs/btrfs/disk-io.c: btrfs_warn(BTRFS_I(folio->page.mapping->host)->root->fs_info, fs/btrfs/extent_io.c: struct btrfs_inode *inode = BTRFS_I(folios[0]->page.mapping->host); fs/btrfs/file.c: if (folio->page.mapping != inode->i_mapping) { fs/btrfs/free-space-cache.c: if (folio->page.mapping != inode->i_mapping) { fs/btrfs/inode.c: if (folio->page.mapping != mapping) { fs/btrfs/inode.c: struct btrfs_inode *inode = BTRFS_I(folio->page.mapping->host); fs/buffer.c: spin_lock(&folio->page.mapping->private_lock); fs/buffer.c: spin_unlock(&folio->page.mapping->private_lock); fs/buffer.c: block_in_file = (sector_t)folio->page.index << fs/ceph/addr.c: mapping->host, folio, folio->page.index); fs/ceph/addr.c: mapping->host, folio, folio->page.index, fs/ceph/addr.c: folio->page.private = (unsigned long)snapc; fs/ceph/addr.c: inode = folio->page.mapping->host; fs/ceph/addr.c: inode, folio, folio->page.index, offset, length); fs/ceph/addr.c: inode, folio, folio->page.index); fs/cifs/file.c: struct cifsInodeInfo *cifsi = CIFS_I(folio->page.mapping->host); fs/ext4/inode.c: struct inode *inode = folio->page.mapping->host; fs/f2fs/data.c: struct inode *inode = folio->page.mapping->host; fs/fuse/dir.c: int err = fuse_readlink_page(folio->page.mapping->host, &folio->page); fs/gfs2/aops.c: struct gfs2_sbd *sdp = GFS2_SB(folio->page.mapping->host); fs/iomap/buffered-io.c: unsigned int nr_blocks = i_blocks_per_folio(folio->page.mapping->host, fs/iomap/buffered-io.c: struct inode *inode = folio->page.mapping->host; fs/iomap/buffered-io.c: BUG_ON(folio->page.index); fs/iomap/buffered-io.c: gfp_t gfp = mapping_gfp_constraint(folio->page.mapping, fs/iomap/buffered-io.c: struct inode *inode = folio->page.mapping->host; fs/iomap/buffered-io.c: struct inode *inode = folio->page.mapping->host; fs/iomap/buffered-io.c: trace_iomap_releasepage(folio->page.mapping->host, folio_offset(folio), fs/iomap/buffered-io.c: trace_iomap_invalidatepage(folio->page.mapping->host, offset, len); fs/jffs2/file.c: struct inode *inode = folio->page.mapping->host; fs/mpage.c: struct inode *inode = folio->page.mapping->host; fs/mpage.c: gfp = readahead_gfp_mask(folio->page.mapping); fs/mpage.c: gfp = mapping_gfp_constraint(folio->page.mapping, GFP_KERNEL); fs/mpage.c: block_in_file = (sector_t)folio->page.index << (PAGE_SHIFT - blkbits); fs/mpage.c: prefetchw(&folio->page.flags); fs/nfs/file.c: nfs_fscache_invalidate_page(&folio->page, folio->page.mapping->host); fs/nfs/fscache.c: nfs_i_fscache(inode), folio, folio->page.index, fs/nfs/fscache.c: folio->page.flags, inode); fs/reiserfs/inode.c: struct inode *inode = folio->page.mapping->host; fs/remap_range.c: if (folio1->page.index > folio2->page.index) fs/ubifs/file.c: struct inode *inode = folio->page.mapping->host; fs/xfs/xfs_aops.c: struct inode *inode = folio->page.mapping->host; (I didn't go through my whole series and do the conversion from folio->page.x to folio->x yet)