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=-6.6 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham 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 71507C43441 for ; Sun, 11 Nov 2018 22:50:45 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 371BF214E0 for ; Sun, 11 Nov 2018 22:50:45 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="R7oPhkWn" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 371BF214E0 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=linuxfoundation.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2404218AbeKLIXJ (ORCPT ); Mon, 12 Nov 2018 03:23:09 -0500 Received: from mail.kernel.org ([198.145.29.99]:55530 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2404187AbeKLIXI (ORCPT ); Mon, 12 Nov 2018 03:23:08 -0500 Received: from localhost (unknown [206.108.79.134]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id EB7C12245E; Sun, 11 Nov 2018 22:33:10 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1541975591; bh=Xu7K2yd4Epr0BeUPgy+u7Nq2bNI2nJVxAWgaAWjzouU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=R7oPhkWn/x04RsTfPznfMCFleEjXtdp5YBl5vicl693ch2DCsXaQWZexShHmHJrMn gQ9r76z/+zbhvcQy9SwK1rNqCpcw6xAJ+cM4YPPuab+EMtbrQ6H7idLZqP4V1ywxWO nq8/oSVo/znsoWuC3p7yWMqm+S24AAC72uCeAii4= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Jeff Mahoney , David Sterba Subject: [PATCH 4.14 203/222] btrfs: dont attempt to trim devices that dont support it Date: Sun, 11 Nov 2018 14:25:00 -0800 Message-Id: <20181111221704.858304298@linuxfoundation.org> X-Mailer: git-send-email 2.19.1 In-Reply-To: <20181111221647.665769131@linuxfoundation.org> References: <20181111221647.665769131@linuxfoundation.org> User-Agent: quilt/0.65 X-stable: review MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 4.14-stable review patch. If anyone has any objections, please let me know. ------------------ From: Jeff Mahoney commit 0be88e367fd8fbdb45257615d691f4675dda062f upstream. We check whether any device the file system is using supports discard in the ioctl call, but then we attempt to trim free extents on every device regardless of whether discard is supported. Due to the way we mask off EOPNOTSUPP, we can end up issuing the trim operations on each free range on devices that don't support it, just wasting time. Fixes: 499f377f49f08 ("btrfs: iterate over unused chunk space in FITRIM") CC: stable@vger.kernel.org # 4.4+ Signed-off-by: Jeff Mahoney Reviewed-by: David Sterba Signed-off-by: David Sterba Signed-off-by: Greg Kroah-Hartman --- fs/btrfs/extent-tree.c | 4 ++++ 1 file changed, 4 insertions(+) --- a/fs/btrfs/extent-tree.c +++ b/fs/btrfs/extent-tree.c @@ -10976,6 +10976,10 @@ static int btrfs_trim_free_extents(struc *trimmed = 0; + /* Discard not supported = nothing to do. */ + if (!blk_queue_discard(bdev_get_queue(device->bdev))) + return 0; + /* Not writeable = nothing to do. */ if (!device->writeable) return 0;