From patchwork Mon Nov 22 06:12:23 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Shin'ichiro Kawasaki X-Patchwork-Id: 12631257 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 99261C433F5 for ; Mon, 22 Nov 2021 06:12:26 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230322AbhKVGPb (ORCPT ); Mon, 22 Nov 2021 01:15:31 -0500 Received: from esa4.hgst.iphmx.com ([216.71.154.42]:48951 "EHLO esa4.hgst.iphmx.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229577AbhKVGPb (ORCPT ); Mon, 22 Nov 2021 01:15:31 -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=1637561545; x=1669097545; h=from:to:cc:subject:date:message-id:mime-version: content-transfer-encoding; bh=1HpaCmfnQ5F+oKEiqkHejRsAAkNuJFeRPz4qTYCGcmY=; b=FyvhlBXDeBNhNtY1j2pjQdEvtcWVFMleNQ3xnmGFTtHyZT6LYtwnx9rb NjeMlqzpYGtDaVA7T4ZasvosFFkzzoPXK879YS4cl6XjtdrmODAngxtDz 6Bnf0PJq8G6hCquZiO54+zDbQi0dx96TpvIZx0NFkI8RRtCLqL8X9I16i fYn7WqHCsdeEHWq1FZGSPrzZRYpYdE0CrTExgneRfVXAB4b/jBAMEJGQm HqKWFsTfq5jUkeqbEIUXGDgqj5JwctRTJOZ4HA+rxfdgXRxbW3dlYflll J/aZKGIRKHVX5tKwK4O1P01dXCS9IdaLwxUzF4glufEGXtWMswIbWP8+Y w==; X-IronPort-AV: E=Sophos;i="5.87,254,1631548800"; d="scan'208";a="185274583" Received: from h199-255-45-14.hgst.com (HELO uls-op-cesaep01.wdc.com) ([199.255.45.14]) by ob1.hgst.iphmx.com with ESMTP; 22 Nov 2021 14:12:24 +0800 IronPort-SDR: wu/WKahT2zGgX6oFwk+Ozxu/mP++k9k92TzrJW0CEc9tGwspVlxC5BcSaGBztuSadKb+P6RVE2 7d5CfqBJYzyLgEplq6IXBlejjHe6eICYEYgjQIE3ebE/Nmvjl0ZR5mne07M8t/fTGtjsCQ9KHe ttjq7DrI6aWSn6uLsIxI4a3k9IexZ9F619OLTyv1ell4I5OYeMiXP4Xf7NwBTxhB3Ps1NgwWPS VNVsdNveR6qlTjSYfAuC8Ikw3oymOEyR/C+kunGxp1nVeK6ofUsQ9CwYHHAsZAbWaqwzfYg4Ls vNwnNoT+oM+T54pR+ZhjIDA6 Received: from uls-op-cesaip01.wdc.com ([10.248.3.36]) by uls-op-cesaep01.wdc.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 21 Nov 2021 21:47:20 -0800 IronPort-SDR: B5IPsCJKsR/mahkmibk9IJ61+rwkwWBvH8DOoTV1dM5q3kV1LuPzLSTx1HUlpj40L71DIK7bEB 9qtzXxm3H3Wjh3H8EWnYeli0sk0nzJ/nZz/0vCiRSodR1jWrMH2ABETsVuXdYfHktVnKi3hZaC EgpQunGy6s+tvWG53IY0a6yOxV/VYZMaQghBQWp8XJg3KN55iaUHqSkfYoRxJL1xyvdbANIJf4 Uz/2qU9P9l1UXlIW1aTTLJG0uYzK+Ub37zwu9x0R9G2l31ItM6b6ZaaRj5cyk35rra3aKy7wvS u1g= WDCIronportException: Internal Received: from shindev.dhcp.fujisawa.hgst.com (HELO shindev.fujisawa.hgst.com) ([10.149.52.173]) by uls-op-cesaip01.wdc.com with ESMTP; 21 Nov 2021 22:12:24 -0800 From: Shin'ichiro Kawasaki To: linux-scsi@vger.kernel.org Cc: "Martin K . Petersen" , Douglas Gilbert , Damien Le Moal , Shinichiro Kawasaki Subject: [PATCH v2] scsi: scsi_debug: Zero clear zones at reset write pointer Date: Mon, 22 Nov 2021 15:12:23 +0900 Message-Id: <20211122061223.298890-1-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 written data in the zones at reset write pointer. Fixes: f0d1cf9378bd ("scsi: scsi_debug: Add ZBC zone commands") Signed-off-by: Shin'ichiro Kawasaki Reviewed-by: Damien Le Moal Acked-by: Douglas Gilbert --- Changes from v1: * Zero clear only the written data area in non-empty zones drivers/scsi/scsi_debug.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/scsi/scsi_debug.c b/drivers/scsi/scsi_debug.c index 1d0278da9041..1ef9907c479a 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; @@ -4664,6 +4665,10 @@ static void zbc_rwp_zone(struct sdebug_dev_info *devip, if (zsp->z_cond == ZC4_CLOSED) devip->nr_closed--; + if (zsp->z_wp > zsp->z_start) + memset(sip->storep + zsp->z_start * sdebug_sector_size, 0, + (zsp->z_wp - zsp->z_start) * sdebug_sector_size); + zsp->z_non_seq_resource = false; zsp->z_wp = zsp->z_start; zsp->z_cond = ZC1_EMPTY;