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=-10.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT 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 C76D6C2BB55 for ; Wed, 15 Apr 2020 12:01:59 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 956B721569 for ; Wed, 15 Apr 2020 12:01:59 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1586952119; bh=GaNAlxoIcuufHCy0GFgNzN8L5z5nlk6PDPiyXYSP6Ag=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=zfkgpnk0ijnNTWmpqRAObwWarO3p0om4jp85auIrQ3L8scvvmCmoptnVOv00CeUKR 8nbxtPnIwyoK0geih3j1RoBpdmJ5B7onV8LWknZ6sJsJmF/WEhLfQk9YJB9LpSUT6B dCtAh+tM4EWYEYTHK5q6JBdTKeJrwrL6QMdm1V3I= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S368190AbgDOMB4 (ORCPT ); Wed, 15 Apr 2020 08:01:56 -0400 Received: from mail.kernel.org ([198.145.29.99]:43824 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2409424AbgDOLsI (ORCPT ); Wed, 15 Apr 2020 07:48:08 -0400 Received: from sasha-vm.mshome.net (c-73-47-72-35.hsd1.nh.comcast.net [73.47.72.35]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 7542621569; Wed, 15 Apr 2020 11:48:07 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1586951288; bh=GaNAlxoIcuufHCy0GFgNzN8L5z5nlk6PDPiyXYSP6Ag=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=bP6zF7zTQdLC8mjCqjDt55UVqMFc77oYbyIKfIO+bZRuEO+cyc1CE0lx0VjCw0ke3 yIfpyYbMWUPPJ70aiZQll3IT0qdleupEzyHy5r18PDplvHn4xSvUzwN4gRR1DDdXos dGWiUj/Dbp7VN/JT/tLxvvYlJjiHVzV2stZMgFbc= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Trond Myklebust , Sasha Levin , linux-nfs@vger.kernel.org Subject: [PATCH AUTOSEL 4.9 16/21] NFS: Fix memory leaks in nfs_pageio_stop_mirroring() Date: Wed, 15 Apr 2020 07:47:43 -0400 Message-Id: <20200415114748.15713-16-sashal@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20200415114748.15713-1-sashal@kernel.org> References: <20200415114748.15713-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Trond Myklebust [ Upstream commit 862f35c94730c9270833f3ad05bd758a29f204ed ] If we just set the mirror count to 1 without first clearing out the mirrors, we can leak queued up requests. Signed-off-by: Trond Myklebust Signed-off-by: Sasha Levin --- fs/nfs/pagelist.c | 17 ++++++++--------- 1 file changed, 8 insertions(+), 9 deletions(-) diff --git a/fs/nfs/pagelist.c b/fs/nfs/pagelist.c index b6e25126a0b0f..529f3a5762637 100644 --- a/fs/nfs/pagelist.c +++ b/fs/nfs/pagelist.c @@ -851,15 +851,6 @@ static int nfs_pageio_setup_mirroring(struct nfs_pageio_descriptor *pgio, return 0; } -/* - * nfs_pageio_stop_mirroring - stop using mirroring (set mirror count to 1) - */ -void nfs_pageio_stop_mirroring(struct nfs_pageio_descriptor *pgio) -{ - pgio->pg_mirror_count = 1; - pgio->pg_mirror_idx = 0; -} - static void nfs_pageio_cleanup_mirroring(struct nfs_pageio_descriptor *pgio) { pgio->pg_mirror_count = 1; @@ -1285,6 +1276,14 @@ void nfs_pageio_cond_complete(struct nfs_pageio_descriptor *desc, pgoff_t index) } } +/* + * nfs_pageio_stop_mirroring - stop using mirroring (set mirror count to 1) + */ +void nfs_pageio_stop_mirroring(struct nfs_pageio_descriptor *pgio) +{ + nfs_pageio_complete(pgio); +} + int __init nfs_init_nfspagecache(void) { nfs_page_cachep = kmem_cache_create("nfs_page", -- 2.20.1