From patchwork Wed May 29 05:04:09 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 13677808 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id EA9E515B57B; Wed, 29 May 2024 05:05:33 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.137.202.133 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1716959135; cv=none; b=V3mz0IhW9JeTdwV0Lp3POvqrFCkn2yWKDnfOAjjqhnquMFGkWw5npB85JK5A8tMyUNq4A6usokfHiq9Q+5uiZD21nDfk6IwWRpF+RUSWr6e+EhbyeAPry2z+OEd+a7lKeWOY2XagWETO8TOpgT/mJB/MvhgxRnUbUJeILv4IiyA= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1716959135; c=relaxed/simple; bh=vN5VFLRXRSPHmmIU1D9ueA75sUZB/E/9TW+6jhpSrSY=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=Uli1kvvWyUSidel/wTAKV7wfeJvmgA31mTS+Fv8qxScqk4h6udCiRi+KqntlBLcMueaiExvqy39XxNYuBGd2UBmnSC+tw6PXXKpCVcHh5FR6VRTm/xBc25LyImT977RSZSqXdBl8v/p/GCj/0R1rjg3iReCn5+68VBx4fTUNepk= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=lst.de; spf=none smtp.mailfrom=bombadil.srs.infradead.org; dkim=pass (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b=JV2Lk341; arc=none smtp.client-ip=198.137.202.133 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=lst.de Authentication-Results: smtp.subspace.kernel.org; spf=none smtp.mailfrom=bombadil.srs.infradead.org Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="JV2Lk341" DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20210309; h=Content-Transfer-Encoding: MIME-Version:References:In-Reply-To:Message-ID:Date:Subject:Cc:To:From:Sender :Reply-To:Content-Type:Content-ID:Content-Description; bh=zW0EkOuxIkEXAr+kUSNAXR4zW6yla1v+V3lES4DaK0U=; b=JV2Lk341hcuT/7Vl5ccbx6rEF4 LSvvlB9GQx61zLW6Ek9rMBriZIqorh2yE6n19JvBK8pX9/bCGIKdK8ZSpyJEO6QCmV4FTj9dJx9ct 2mmqIL366QPU6zYx5zGQSrSTnDBwzdEgAuHzVnaP8EbOoN2JW7yLhrxCvxx4q95t/vZOmQ/fs/cKy Hwkml4dg7O0d9si4j5qAHqQU/FbHR3FB0PuKk8zFIIWsEMD/MnhlQRi1PZcYYk0TFsmHCcsFDcNLx /+4Z/3TAjBBZlqT2hEMfDtWsLUrRt4XNvmIyqd0q1bw8vLAqtevVrvfYTv+SnaOzLd/GwgYDhosg1 p2ZtR9BA==; Received: from 2a02-8389-2341-5b80-7775-b725-99f7-3344.cable.dynamic.v6.surfer.at ([2a02:8389:2341:5b80:7775:b725:99f7:3344] helo=localhost) by bombadil.infradead.org with esmtpsa (Exim 4.97.1 #2 (Red Hat Linux)) id 1sCBVB-00000002pbP-0kqv; Wed, 29 May 2024 05:05:29 +0000 From: Christoph Hellwig To: Jens Axboe , "Martin K. Petersen" Cc: Richard Weinberger , Anton Ivanov , Johannes Berg , Josef Bacik , Ilya Dryomov , Dongsheng Yang , =?utf-8?q?Roger_Pau_Monn?= =?utf-8?q?=C3=A9?= , linux-um@lists.infradead.org, linux-block@vger.kernel.org, nbd@other.debian.org, ceph-devel@vger.kernel.org, xen-devel@lists.xenproject.org, linux-scsi@vger.kernel.org Subject: [PATCH 07/12] sd: factor out a sd_discard_mode helper Date: Wed, 29 May 2024 07:04:09 +0200 Message-ID: <20240529050507.1392041-8-hch@lst.de> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240529050507.1392041-1-hch@lst.de> References: <20240529050507.1392041-1-hch@lst.de> Precedence: bulk X-Mailing-List: linux-scsi@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html Split the logic to pick the right discard mode into a little helper to prepare for further changes. Signed-off-by: Christoph Hellwig Reviewed-by: Damien Le Moal Reviewed-by: Bart Van Assche --- drivers/scsi/sd.c | 37 ++++++++++++++++++++----------------- 1 file changed, 20 insertions(+), 17 deletions(-) diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c index 437743e3a0d37d..2d08b69154b995 100644 --- a/drivers/scsi/sd.c +++ b/drivers/scsi/sd.c @@ -3201,6 +3201,25 @@ static void sd_read_app_tag_own(struct scsi_disk *sdkp, unsigned char *buffer) return; } +static unsigned int sd_discard_mode(struct scsi_disk *sdkp) +{ + if (!sdkp->lbpvpd) { + /* LBP VPD page not provided */ + if (sdkp->max_unmap_blocks) + return SD_LBP_UNMAP; + return SD_LBP_WS16; + } + + /* LBP VPD page tells us what to use */ + if (sdkp->lbpu && sdkp->max_unmap_blocks) + return SD_LBP_UNMAP; + if (sdkp->lbpws) + return SD_LBP_WS16; + if (sdkp->lbpws10) + return SD_LBP_WS10; + return SD_LBP_DISABLE; +} + /** * sd_read_block_limits - Query disk device for preferred I/O sizes. * @sdkp: disk to query @@ -3239,23 +3258,7 @@ static void sd_read_block_limits(struct scsi_disk *sdkp) sdkp->unmap_alignment = get_unaligned_be32(&vpd->data[32]) & ~(1 << 31); - if (!sdkp->lbpvpd) { /* LBP VPD page not provided */ - - if (sdkp->max_unmap_blocks) - sd_config_discard(sdkp, SD_LBP_UNMAP); - else - sd_config_discard(sdkp, SD_LBP_WS16); - - } else { /* LBP VPD page tells us what to use */ - if (sdkp->lbpu && sdkp->max_unmap_blocks) - sd_config_discard(sdkp, SD_LBP_UNMAP); - else if (sdkp->lbpws) - sd_config_discard(sdkp, SD_LBP_WS16); - else if (sdkp->lbpws10) - sd_config_discard(sdkp, SD_LBP_WS10); - else - sd_config_discard(sdkp, SD_LBP_DISABLE); - } + sd_config_discard(sdkp, sd_discard_mode(sdkp)); } out: