From patchwork Fri Nov 19 10:22:04 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Shinichiro Kawasaki X-Patchwork-Id: 518711 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id DC1E7C433F5 for ; Fri, 19 Nov 2021 10:22:07 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id C543761B27 for ; Fri, 19 Nov 2021 10:22:07 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232649AbhKSKZI (ORCPT ); Fri, 19 Nov 2021 05:25:08 -0500 Received: from esa6.hgst.iphmx.com ([216.71.154.45]:8421 "EHLO esa6.hgst.iphmx.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232576AbhKSKZI (ORCPT ); Fri, 19 Nov 2021 05:25:08 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=wdc.com; i=@wdc.com; q=dns/txt; s=dkim.wdc.com; t=1637317327; x=1668853327; h=from:to:cc:subject:date:message-id:mime-version: content-transfer-encoding; bh=YeeI3xnG9DNwbGK+nxEuis1KFWs7UygsQbxy2bzwMQE=; b=ZyH8r6eW7G8ycueS7dB8PccpR12RVolLDdtXqrAesxigZne1aNV3YQJU m1WIQb3OlMLPj8d3blfiPDKISvAP4AMjWkjf2/6ZRvlD2L3eusFEOwCoz T/FMLI7ZR+td0MUmgwUDO9UcwcRlKsLsIxOlhERtc3Qiv+hTE33aWnFJE UzCqo4plf8xBkfHL/F+25FoMwlkcIdf43hVL23l1YmQJ2A6dhtVh3KDKh Q9E/dl3+gRtMToK8ASWn/gNWBUKG9PC+qJS15i/12DEBMhkDeAOGmhd6v FdECE4o1BVXijK0HjyS846WQz3mzPQNzqlSd8eCmmCb85vN9lwMhP9TGe Q==; X-IronPort-AV: E=Sophos;i="5.87,247,1631548800"; d="scan'208";a="187084469" Received: from uls-op-cesaip02.wdc.com (HELO uls-op-cesaep02.wdc.com) ([199.255.45.15]) by ob1.hgst.iphmx.com with ESMTP; 19 Nov 2021 18:22:06 +0800 IronPort-SDR: Q1gKPyJAZzObOGr/mf7AN+P1pFLAKQCN5ITItP+q6aUinjyM7ZCmE/mMrCLMXOxvGcO34jwk2F fDDewUIYJ9TupYGPB+Zk9fOuf4kO1S1KWuUPCHn5FN2ae5eO6diAUDAtzL5/EC/YHSME9NevLI OyzVU4W+vIjsLsMzXKNCzyg/nrWTEfrjyRxDNh4kMFOSdJxuztqd3mjOgKSjhQJc5fh+Nmg/mQ 9qvGIylY8hLmoIUdSCLgaXkiWbXFH3136Cj/6lighrOamtVkTIxpgqXV3XX9g5t8gTg1wLQhbd TXELiK8tTHrntUQETuPd7r41 Received: from uls-op-cesaip02.wdc.com ([10.248.3.37]) by uls-op-cesaep02.wdc.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 19 Nov 2021 01:55:32 -0800 IronPort-SDR: LvCKL967XmWrDTqxUgudrndL4GpM4sov/ozrY3JcnpCN+QLbRoovfrPe0VniihJ30JYLTyHusE sDtm18HkpqNShvDM8Q8a4t398FfLfEgWp+Zk0SN/xl4UVetUBd3o8luWvSSamaAkwLs9tC3ZUx flj+FEkb0SWCAcj7R6x7/V02XhWcorbByIrGuQSZu+883mto250iLJMLf+yDWVuUsSD1z5jOti W9VqPuS7bKohh60KYKk5S5F6JgXzlA1J8d6gx0Uvq5YWRPPzYpg9v+FZHuuTHK8wMOLm520oPU 27U= WDCIronportException: Internal Received: from shindev.dhcp.fujisawa.hgst.com (HELO shindev.fujisawa.hgst.com) ([10.149.52.173]) by uls-op-cesaip02.wdc.com with ESMTP; 19 Nov 2021 02:22:06 -0800 From: Shin'ichiro Kawasaki To: linux-scsi@vger.kernel.org Cc: "Martin K . Petersen" , Douglas Gilbert , Damien Le Moal , Shinichiro Kawasaki Subject: [PATCH] scsi: scsi_debug: Zero clear zones at reset write pointer Date: Fri, 19 Nov 2021 19:22:04 +0900 Message-Id: <20211119102204.259762-1-shinichiro.kawasaki@wdc.com> X-Mailer: git-send-email 2.33.1 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org When reset write pointer is requested to scsi_debug devices with zoned model, positions of write pointers are reset, but the data in the target zones are not cleared. Read to the zones returns data written before the reset write pointer. This unexpected left data is confusing and does not allow using scsi_debug for stale page cache test of the BLKRESETZONE ioctl. Hence, zero clear the target zones at reset write pointer. Fixes: f0d1cf9378bd ("scsi: scsi_debug: Add ZBC zone commands") Signed-off-by: Shin'ichiro Kawasaki --- drivers/scsi/scsi_debug.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/scsi/scsi_debug.c b/drivers/scsi/scsi_debug.c index 1d0278da9041..6d1f1a4a6724 100644 --- a/drivers/scsi/scsi_debug.c +++ b/drivers/scsi/scsi_debug.c @@ -4653,6 +4653,7 @@ static void zbc_rwp_zone(struct sdebug_dev_info *devip, struct sdeb_zone_state *zsp) { enum sdebug_z_cond zc; + struct sdeb_store_info *sip = devip2sip(devip, false); if (zbc_zone_is_conv(zsp)) return; @@ -4667,6 +4668,9 @@ static void zbc_rwp_zone(struct sdebug_dev_info *devip, zsp->z_non_seq_resource = false; zsp->z_wp = zsp->z_start; zsp->z_cond = ZC1_EMPTY; + + memset(sip->storep + zsp->z_start * sdebug_sector_size, 0, + devip->zsize * sdebug_sector_size); } static void zbc_rwp_all(struct sdebug_dev_info *devip)