From patchwork Mon Nov 11 15:27:24 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Li Wang X-Patchwork-Id: 3168091 Return-Path: X-Original-To: patchwork-ceph-devel@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 07C689F39E for ; Mon, 11 Nov 2013 15:42:44 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id D4C802015F for ; Mon, 11 Nov 2013 15:42:42 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id B261720125 for ; Mon, 11 Nov 2013 15:42:41 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753939Ab3KKPm0 (ORCPT ); Mon, 11 Nov 2013 10:42:26 -0500 Received: from m53-178.qiye.163.com ([123.58.178.53]:52842 "EHLO m53-178.qiye.163.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754440Ab3KKPl0 (ORCPT ); Mon, 11 Nov 2013 10:41:26 -0500 Received: from localhost.localdomain (unknown [121.33.255.10]) by m53-178.qiye.163.com (HMail) with ESMTPA id 47DCF13A804D; Mon, 11 Nov 2013 23:41:24 +0800 (CST) From: Li Wang To: linux-kernel@vger.kernel.org Cc: ceph-devel@vger.kernel.org, Sage Weil , linux-fsdevel@vger.kernel.org, linux-cifs@vger.kernel.org, Milosz Tanski , Li Wang Subject: [PATCH 2/7] Fscache: Implement uncaching single no-data page Date: Mon, 11 Nov 2013 23:27:24 +0800 Message-Id: <57f79ce8b28f2f0e3837f66c3aa99eb078bc5bf7.1384183054.git.liwang@ubuntukylin.com> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: References: In-Reply-To: References: X-HM-Spam-Status: e1koWUFPN1dZCBgUCR5ZQU5VQ0hLS0tLT0tLTk9ISUpIV1kJDhceCFlBWS grPSQoND0vPToyNyQyNSQzPjo*PilBS1VLQDYjJCI#KCQyNSQzPjo*PilBS1VLQCsvKSQ1NCQyNS QzPjo*PilBSVVLQDg0LjUvKSIkODVBS1VLQCk#PDI0NSQ6KDI6QUtVS0ArKTQtMjU4PiQ8Ljo1PD 80NTxBS1VLQD8iNTo2MjgkMiskNTQkMjUkMz46Pz4pQUtVS0A2LjcvMiQpOCsvJD8yPT0#KT41Ly QyNSQzPjo*PilBSVVLQDIrJC80PzoiJDg1LyRLJEpLS0FLVUtAMiskTiQ2MjUuLz4kODUvJEskSk tBS1VLQDIrJEhLJDYyNS4vPiQ4NS8kSyROS0FLVUtAMiskSiQzNC4pJDg1LyRLJEpLS0FLVUtAMi skSiQ2MjUuLz4kODUvJEskSktBS1VLQCguOSQ#QUpVTk5APTUkKC45JD41LDQpPygkMzcxJEpLS0 lLSkFLVUlDWQY+ X-HM-Sender-Digest: e1kSHx4VD1lBWUc6MQg6Cjo4LDo4EDorKjhIOj4qOkMwCjFVSlVKSENP SkNPT0NPTUpLVTMWGhIXVRcSDBoVHDsOGQ4VDw4QAhcSFVUYFBZFWVdZDB4ZWUEdGhcIHldZCAFZ QUlKQ0k3V1kSC1lBWUpJSlVISFVJTk5VSktZBg++ Sender: ceph-devel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: ceph-devel@vger.kernel.org X-Spam-Status: No, score=-6.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=ham version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Similar to the routine for multiple pages except that it takes page * as input rather than list head *. Signed-off-by: Li Wang --- fs/fscache/page.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/fs/fscache/page.c b/fs/fscache/page.c index 7f5c658..0c69f72 100644 --- a/fs/fscache/page.c +++ b/fs/fscache/page.c @@ -721,6 +721,14 @@ nobufs: } EXPORT_SYMBOL(__fscache_alloc_page); +void __fscache_readpage_cancel(struct fscache_cookie *cookie, + struct page *page) +{ + if (PageFsCache(page)) + __fscache_uncache_page(cookie, page); +} +EXPORT_SYMBOL(__fscache_readpage_cancel); + /* * Unmark pages allocate in the readahead code path (via: * fscache_readpages_or_alloc) after delegating to the base filesystem