From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Cyrus-Session-Id: sloti22d1t05-1098017-1521804514-2-1664464424784170119 X-Sieve: CMU Sieve 3.0 X-Spam-known-sender: no X-Spam-score: 0.0 X-Spam-hits: BAYES_00 -1.9, HEADER_FROM_DIFFERENT_DOMAINS 0.25, ME_NOAUTH 0.01, RCVD_IN_DNSWL_HI -5, T_RP_MATCHES_RCVD -0.01, LANGUAGES en, BAYES_USED global, SA_VERSION 3.4.0 X-Spam-source: IP='209.132.180.67', Host='vger.kernel.org', Country='CN', FromHeader='org', MailFrom='org' X-Spam-charsets: plain='UTF-8' X-Resolved-to: greg@kroah.com X-Delivered-to: greg@kroah.com X-Mail-from: stable-owner@vger.kernel.org ARC-Seal: i=1; a=rsa-sha256; cv=none; d=messagingengine.com; s=arctest; t=1521804514; b=d7Qn+QG9y5HSstdBqvd4mdlgq+zjMRQHgJvY9laJ3u1jCqc X/VCwMwuR76K+Z8G+b7NHh8aAfPU+N6dslT1zncjoezOvGVPFRVv9/AV2Mw1fsdx XmkqW6H/JFLPfhuTYUKQRHSIlnqcmeO8nY6oQqMptB72JoS/hFbmjbsrmI24udox STdyY6kz1RTNGc6/KZvPR8J2Qrgb79vj8Ctc81NEdjrJ+E/zi6awZfmD1JDVnva6 wK1bQRdNjAmw1BMoLh8goIZmuCxFgBTyOJ4O/m0O/N9/di0IM/frvZhYMfGInByC kLwvJ9J9Yk3f20SL8pC4odGCJoNweFhUlNRDL1w== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=from:to:cc:subject:date:message-id :in-reply-to:references:mime-version:content-type:sender :list-id; s=arctest; t=1521804514; bh=EHwjIFPI6ZT4W23tylKbsJ804M gwm1fy3VRBHdz3dk0=; b=TqF67nPNUuLudmnIm49TAkzjbhGGrq9OP63A0wTE/m 1YY4eJmsOLvMa2Kd7OgFeweSLMw30OV5k6bEfpJQhOloAp4yL1Ca7ErrodDY+ktZ 9HtAjneAFCS1/oIrsrqxzBsbAbsny73YS+ow7b6neY9WUBH/s8RlUgaslqGqQHK/ Hvjb21EMRfCDJquN2H7Q4s32V9Z8F90x2bNWBsQDjHdbBxGg2DJ1r66/1135Lrnl JnGRDndXTnlqbJrPxSn8kOEuBk94C8rA0z97c/LB/FD71DQTVf/HZ5tFxtG7umZq 813Kjq2X45+WNZDmkPkBLWaXlB+hwMUimZfLiH3SBLWw== ARC-Authentication-Results: i=1; mx1.messagingengine.com; arc=none (no signatures found); dkim=none (no signatures found); dmarc=none (p=none,has-list-id=yes,d=none) header.from=linuxfoundation.org; iprev=pass policy.iprev=209.132.180.67 (vger.kernel.org); spf=none smtp.mailfrom=stable-owner@vger.kernel.org smtp.helo=vger.kernel.org; x-aligned-from=fail; x-ptr=pass x-ptr-helo=vger.kernel.org x-ptr-lookup=vger.kernel.org; x-return-mx=pass smtp.domain=vger.kernel.org smtp.result=pass smtp_org.domain=kernel.org smtp_org.result=pass smtp_is_org_domain=no header.domain=linuxfoundation.org header.result=pass header_is_org_domain=yes; x-vs=clean score=-100 state=0 Authentication-Results: mx1.messagingengine.com; arc=none (no signatures found); dkim=none (no signatures found); dmarc=none (p=none,has-list-id=yes,d=none) header.from=linuxfoundation.org; iprev=pass policy.iprev=209.132.180.67 (vger.kernel.org); spf=none smtp.mailfrom=stable-owner@vger.kernel.org smtp.helo=vger.kernel.org; x-aligned-from=fail; x-ptr=pass x-ptr-helo=vger.kernel.org x-ptr-lookup=vger.kernel.org; x-return-mx=pass smtp.domain=vger.kernel.org smtp.result=pass smtp_org.domain=kernel.org smtp_org.result=pass smtp_is_org_domain=no header.domain=linuxfoundation.org header.result=pass header_is_org_domain=yes; x-vs=clean score=-100 state=0 X-ME-VSCategory: clean Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932226AbeCWKGw (ORCPT ); Fri, 23 Mar 2018 06:06:52 -0400 Received: from mail.linuxfoundation.org ([140.211.169.12]:40970 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932218AbeCWKGt (ORCPT ); Fri, 23 Mar 2018 06:06:49 -0400 From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Benjamin Coddington , Trond Myklebust , Sasha Levin Subject: [PATCH 4.9 040/177] NFS: Fix missing pg_cleanup after nfs_pageio_cond_complete() Date: Fri, 23 Mar 2018 10:52:48 +0100 Message-Id: <20180323094206.934467472@linuxfoundation.org> X-Mailer: git-send-email 2.16.2 In-Reply-To: <20180323094205.090519271@linuxfoundation.org> References: <20180323094205.090519271@linuxfoundation.org> User-Agent: quilt/0.65 X-stable: review MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Sender: stable-owner@vger.kernel.org X-Mailing-List: stable@vger.kernel.org X-getmail-retrieved-from-mailbox: INBOX X-Mailing-List: linux-kernel@vger.kernel.org List-ID: 4.9-stable review patch. If anyone has any objections, please let me know. ------------------ From: Benjamin Coddington [ Upstream commit 43b7d964ed30dbca5c83c90cb010985b429ec4f9 ] Commit a7d42ddb3099727f58366fa006f850a219cce6c8 ("nfs: add mirroring support to pgio layer") moved pg_cleanup out of the path when there was non-sequental I/O that needed to be flushed. The result is that for layouts that have more than one layout segment per file, the pg_lseg is not cleared, so we can end up hitting the WARN_ON_ONCE(req_start >= seg_end) in pnfs_generic_pg_test since the pg_lseg will be pointing to that previously-flushed layout segment. Signed-off-by: Benjamin Coddington Fixes: a7d42ddb3099 ("nfs: add mirroring support to pgio layer") Signed-off-by: Trond Myklebust Signed-off-by: Sasha Levin Signed-off-by: Greg Kroah-Hartman --- fs/nfs/pagelist.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) --- a/fs/nfs/pagelist.c +++ b/fs/nfs/pagelist.c @@ -1262,8 +1262,10 @@ void nfs_pageio_cond_complete(struct nfs mirror = &desc->pg_mirrors[midx]; if (!list_empty(&mirror->pg_list)) { prev = nfs_list_entry(mirror->pg_list.prev); - if (index != prev->wb_index + 1) - nfs_pageio_complete_mirror(desc, midx); + if (index != prev->wb_index + 1) { + nfs_pageio_complete(desc); + break; + } } } }