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=-7.0 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,UNWANTED_LANGUAGE_BODY,URIBL_BLOCKED, 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 63172C43461 for ; Tue, 8 Sep 2020 18:01:50 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 14FC02074B for ; Tue, 8 Sep 2020 18:01:50 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1599588110; bh=OYOtgndWecoxZwngBj2b+iEf7X5sIueE3Anj06XmutE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=Xcr/WLVe8OeoTLwKOP772LxSgqb9tBtB3oy9s55jo5EWBfboFdJozgqwCtG8Iv5e4 wzSnIDklFDhiWiqrjHWaBCPJfhO8E9iYRGBpH7l5VaWGJOi0ef+R6yE4krrxPtKGwr kQs1QpuEsZhlIHlj1+AfvvHIy8LuQbEFDW7l0DSE= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726925AbgIHSBr (ORCPT ); Tue, 8 Sep 2020 14:01:47 -0400 Received: from mail.kernel.org ([198.145.29.99]:56076 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1731342AbgIHQMK (ORCPT ); Tue, 8 Sep 2020 12:12:10 -0400 Received: from localhost (83-86-74-64.cable.dynamic.v4.ziggo.nl [83.86.74.64]) (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 855C024786; Tue, 8 Sep 2020 15:51:09 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1599580270; bh=OYOtgndWecoxZwngBj2b+iEf7X5sIueE3Anj06XmutE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=VMfLFyUcNw5Zt0lhkDT6yBD0xi/ewm+LlpHUU3oGe3fThvHmqLXkZamd3oPkNbYFZ +CQJ2Bd2K4HxpZpsRsg9XdCg+4/CjZjm3E646z8QlyHvk3/w458NqR5eHmt0Kszj1i RKhQSLHT86o3DAjcs7at2lhxdgXcpYaMBptMtEk8= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Tejun Heo , Karthik Shivaram , Jens Axboe Subject: [PATCH 4.19 75/88] libata: implement ATA_HORKAGE_MAX_TRIM_128M and apply to Sandisks Date: Tue, 8 Sep 2020 17:26:16 +0200 Message-Id: <20200908152224.923995652@linuxfoundation.org> X-Mailer: git-send-email 2.28.0 In-Reply-To: <20200908152221.082184905@linuxfoundation.org> References: <20200908152221.082184905@linuxfoundation.org> User-Agent: quilt/0.66 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 From: Tejun Heo commit 3b5455636fe26ea21b4189d135a424a6da016418 upstream. All three generations of Sandisk SSDs lock up hard intermittently. Experiments showed that disabling NCQ lowered the failure rate significantly and the kernel has been disabling NCQ for some models of SD7's and 8's, which is obviously undesirable. Karthik worked with Sandisk to root cause the hard lockups to trim commands larger than 128M. This patch implements ATA_HORKAGE_MAX_TRIM_128M which limits max trim size to 128M and applies it to all three generations of Sandisk SSDs. Signed-off-by: Tejun Heo Cc: Karthik Shivaram Cc: stable@vger.kernel.org Signed-off-by: Jens Axboe Signed-off-by: Greg Kroah-Hartman --- drivers/ata/libata-core.c | 5 ++--- drivers/ata/libata-scsi.c | 8 +++++++- include/linux/libata.h | 1 + 3 files changed, 10 insertions(+), 4 deletions(-) --- a/drivers/ata/libata-core.c +++ b/drivers/ata/libata-core.c @@ -4492,9 +4492,8 @@ static const struct ata_blacklist_entry /* https://bugzilla.kernel.org/show_bug.cgi?id=15573 */ { "C300-CTFDDAC128MAG", "0001", ATA_HORKAGE_NONCQ, }, - /* Some Sandisk SSDs lock up hard with NCQ enabled. Reported on - SD7SN6S256G and SD8SN8U256G */ - { "SanDisk SD[78]SN*G", NULL, ATA_HORKAGE_NONCQ, }, + /* Sandisk SD7/8/9s lock up hard on large trims */ + { "SanDisk SD[789]*", NULL, ATA_HORKAGE_MAX_TRIM_128M, }, /* devices which puke on READ_NATIVE_MAX */ { "HDS724040KLSA80", "KFAOA20N", ATA_HORKAGE_BROKEN_HPA, }, --- a/drivers/ata/libata-scsi.c +++ b/drivers/ata/libata-scsi.c @@ -2391,6 +2391,7 @@ static unsigned int ata_scsiop_inq_89(st static unsigned int ata_scsiop_inq_b0(struct ata_scsi_args *args, u8 *rbuf) { + struct ata_device *dev = args->dev; u16 min_io_sectors; rbuf[1] = 0xb0; @@ -2416,7 +2417,12 @@ static unsigned int ata_scsiop_inq_b0(st * with the unmap bit set. */ if (ata_id_has_trim(args->id)) { - put_unaligned_be64(65535 * ATA_MAX_TRIM_RNUM, &rbuf[36]); + u64 max_blocks = 65535 * ATA_MAX_TRIM_RNUM; + + if (dev->horkage & ATA_HORKAGE_MAX_TRIM_128M) + max_blocks = 128 << (20 - SECTOR_SHIFT); + + put_unaligned_be64(max_blocks, &rbuf[36]); put_unaligned_be32(1, &rbuf[28]); } --- a/include/linux/libata.h +++ b/include/linux/libata.h @@ -439,6 +439,7 @@ enum { ATA_HORKAGE_NO_DMA_LOG = (1 << 23), /* don't use DMA for log read */ ATA_HORKAGE_NOTRIM = (1 << 24), /* don't use TRIM */ ATA_HORKAGE_MAX_SEC_1024 = (1 << 25), /* Limit max sects to 1024 */ + ATA_HORKAGE_MAX_TRIM_128M = (1 << 26), /* Limit max trim size to 128M */ /* DMA mask for user DMA control: User visible values; DO NOT renumber */