From patchwork Fri Aug 25 20:12:12 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Matthew Wilcox (Oracle)" X-Patchwork-Id: 13366288 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 C24D4EE49A6 for ; Fri, 25 Aug 2023 20:13:51 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230400AbjHYUNO (ORCPT ); Fri, 25 Aug 2023 16:13:14 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:37676 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230273AbjHYUMo (ORCPT ); Fri, 25 Aug 2023 16:12:44 -0400 Received: from casper.infradead.org (casper.infradead.org [IPv6:2001:8b0:10b:1236::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 416882689; Fri, 25 Aug 2023 13:12:42 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.20170209; h=Content-Transfer-Encoding:MIME-Version: References:In-Reply-To:Message-Id:Date:Subject:Cc:To:From:Sender:Reply-To: Content-Type:Content-ID:Content-Description; bh=pMnumJU38mV/KetFzw0BoCaockrMLHy/CLSU79p5iR4=; b=BL4nArnggA5NZ/JpA7aJ6aPplb 8yMnX1xsuE7Yp5TUDaTNNGKp8BBhbm6y5FVhYWKG6GDH7f4rORx0awVa1/LvsnPtRSaZajj1vL5wq aF8T26poXPtHNBsqHCAQJIAWsHfiAi88Ai9nrOnBYOdoxS5s/t6tltmyOQia70ub5gP9d1uUJSFHj iWZEz3nm8kWgUo2G7MI5me+4cghn/CNV9jzP03JfkFSKu8WqXwZ/N+SC1V9uq9u7ztGoSIAencoZT HcIr2jzWp4EJXm7RX/Pg0FVg6CbPUdGRtMMwdwg/6bIUFAxDrUN2+y7sOvHMbh4VuuZkVU13BpdRY f3PyBvig==; Received: from willy by casper.infradead.org with local (Exim 4.94.2 #2 (Red Hat Linux)) id 1qZdAV-001SZg-64; Fri, 25 Aug 2023 20:12:31 +0000 From: "Matthew Wilcox (Oracle)" To: Xiubo Li , Ilya Dryomov Cc: "Matthew Wilcox (Oracle)" , Jeff Layton , ceph-devel@vger.kernel.org, David Howells , linux-fsdevel@vger.kernel.org Subject: [PATCH 02/15] ceph: Convert ceph_page_mkwrite() to use a folio Date: Fri, 25 Aug 2023 21:12:12 +0100 Message-Id: <20230825201225.348148-3-willy@infradead.org> X-Mailer: git-send-email 2.37.1 In-Reply-To: <20230825201225.348148-1-willy@infradead.org> References: <20230825201225.348148-1-willy@infradead.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: ceph-devel@vger.kernel.org Operate on the entire folio instead of just the page. There was an earlier effort to do this with thp_size(), but it had the exact type confusion between head & tail pages that folios are designed to avoid. Signed-off-by: Matthew Wilcox (Oracle) --- fs/ceph/addr.c | 35 +++++++++++++++++------------------ 1 file changed, 17 insertions(+), 18 deletions(-) diff --git a/fs/ceph/addr.c b/fs/ceph/addr.c index 9a0a79833eb0..7c7dfcd63cd1 100644 --- a/fs/ceph/addr.c +++ b/fs/ceph/addr.c @@ -1677,8 +1677,8 @@ static vm_fault_t ceph_page_mkwrite(struct vm_fault *vmf) struct ceph_inode_info *ci = ceph_inode(inode); struct ceph_file_info *fi = vma->vm_file->private_data; struct ceph_cap_flush *prealloc_cf; - struct page *page = vmf->page; - loff_t off = page_offset(page); + struct folio *folio = page_folio(vmf->page); + loff_t pos = folio_pos(folio); loff_t size = i_size_read(inode); size_t len; int want, got, err; @@ -1695,50 +1695,49 @@ static vm_fault_t ceph_page_mkwrite(struct vm_fault *vmf) sb_start_pagefault(inode->i_sb); ceph_block_sigs(&oldset); - if (off + thp_size(page) <= size) - len = thp_size(page); - else - len = offset_in_thp(page, size); + len = folio_size(folio); + if (pos + folio_size(folio) > size) + len = size - pos; dout("page_mkwrite %p %llx.%llx %llu~%zd getting caps i_size %llu\n", - inode, ceph_vinop(inode), off, len, size); + inode, ceph_vinop(inode), pos, len, size); if (fi->fmode & CEPH_FILE_MODE_LAZY) want = CEPH_CAP_FILE_BUFFER | CEPH_CAP_FILE_LAZYIO; else want = CEPH_CAP_FILE_BUFFER; got = 0; - err = ceph_get_caps(vma->vm_file, CEPH_CAP_FILE_WR, want, off + len, &got); + err = ceph_get_caps(vma->vm_file, CEPH_CAP_FILE_WR, want, pos + len, &got); if (err < 0) goto out_free; dout("page_mkwrite %p %llu~%zd got cap refs on %s\n", - inode, off, len, ceph_cap_string(got)); + inode, pos, len, ceph_cap_string(got)); - /* Update time before taking page lock */ + /* Update time before taking folio lock */ file_update_time(vma->vm_file); inode_inc_iversion_raw(inode); do { struct ceph_snap_context *snapc; - lock_page(page); + folio_lock(folio); - if (page_mkwrite_check_truncate(page, inode) < 0) { - unlock_page(page); + if (folio_mkwrite_check_truncate(folio, inode) < 0) { + folio_unlock(folio); ret = VM_FAULT_NOPAGE; break; } - snapc = ceph_find_incompatible(page); + snapc = ceph_find_incompatible(&folio->page); if (!snapc) { - /* success. we'll keep the page locked. */ - set_page_dirty(page); + /* success. we'll keep the folio locked. */ + folio_mark_dirty(folio); ret = VM_FAULT_LOCKED; break; } - unlock_page(page); + folio_unlock(folio); if (IS_ERR(snapc)) { ret = VM_FAULT_SIGBUS; @@ -1762,7 +1761,7 @@ static vm_fault_t ceph_page_mkwrite(struct vm_fault *vmf) } dout("page_mkwrite %p %llu~%zd dropping cap refs on %s ret %x\n", - inode, off, len, ceph_cap_string(got), ret); + inode, pos, len, ceph_cap_string(got), ret); ceph_put_cap_refs_async(ci, got); out_free: ceph_restore_sigs(&oldset);