From patchwork Tue Mar 10 09:46:47 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Johannes Thumshirn X-Patchwork-Id: 11428971 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id E79D314B7 for ; Tue, 10 Mar 2020 09:47:20 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id C710E2467F for ; Tue, 10 Mar 2020 09:47:20 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=wdc.com header.i=@wdc.com header.b="AkI7E4HU" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726353AbgCJJrU (ORCPT ); Tue, 10 Mar 2020 05:47:20 -0400 Received: from esa2.hgst.iphmx.com ([68.232.143.124]:26501 "EHLO esa2.hgst.iphmx.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726202AbgCJJrT (ORCPT ); Tue, 10 Mar 2020 05:47:19 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=wdc.com; i=@wdc.com; q=dns/txt; s=dkim.wdc.com; t=1583833644; x=1615369644; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=3p7RHEyoePg7i1Mq/5dKs5CFba9Y+OBx37yaWHnJv0Q=; b=AkI7E4HUUfq/b+Cv0vdNxENawjiJIQuysdZp3cqR7ENlTWAY77qfPg8J XDpL8ybCqcaxpVAGBDclq4jtRQRJM1nBYSpdpOD7UjVr5rLn2DhKhBZCy lI9BKi7dKLpetYvNSxiin6ag8C1/tzbLeY0g1t4WQdMdMhtfzx6QxpgmK JmBiZX1kggifu//h0ebrUmaMiUPcuNsuvqGgIJB4E2f4ty65WOMPgEcYS OtDJVKl/8bKS7KkjmriJzY8jhr/0JAYyislaXE2gO8lmMQXaxYI02cpYw NopsdvnoLS4XffeN733X6H/jhnzjx6x5mzNidbNjgT2vA29aVLcKYNceD Q==; IronPort-SDR: jxupdKjoHNP/XsPyzDKKYvH4nwAypI+WGsOk7p1cwK0C2T+7RNjbtRZzp625P8rK3kIRv4zYmj yRXBZWaasLjP6htXJe+F+h25hvLMhTEcST63mbYJ9NRHgYl4mCSqk3EaKgyfRreg0mVPyPNMY7 8YTacxefkGp99qRW/+e/wKWzEPIbkleCu0XqwPpdQTrD2rayNsKeaNRfE6sI6b8A5NYQNbi/kz gKJfVesvy7KCRZ2iISchADrs4zDVTPKXtyeYFqA/8aAUx7HeNvqe2mCYYpYq2ANqvg2HnQOKI2 X90= X-IronPort-AV: E=Sophos;i="5.70,536,1574092800"; d="scan'208";a="234082787" Received: from uls-op-cesaip02.wdc.com (HELO uls-op-cesaep02.wdc.com) ([199.255.45.15]) by ob1.hgst.iphmx.com with ESMTP; 10 Mar 2020 17:47:24 +0800 IronPort-SDR: nqCUm4+6YZ3rQsIBdLBIPOXk525qy3Z7/u6CO1HRKWYzksIns2CvW9okRsFVcfKg1d3qywHCyB TjzB9aufHX600q4lam0qEjTESRUlhOCYwf7xwXgHeATazvbT230LfeEHDShWnQV08eyFo64saY pkvTTqThARqLBlvUErK1uwpecy86SAxV7/x1V15/Qo1GRw/KwXeT/ITFdmfoVf7cXa34qXW54G 7tFiBajwP2zbJbnuKOwbNMPRL6s/uV8Nn4y6r59meaLHxHueK511oQ5Lth5JpKuW1PJlg2jvYd yEpcmvYqCrBN33Udh7vDEoeT 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; 10 Mar 2020 02:38:59 -0700 IronPort-SDR: C7vB4ADhzATcn/BECNcdERi5PCk6AzABilnzyc6cfl/JZd3i4ZkrBjYOYNE6dbQgQ1drHIDRyd +KSe83UqI6P9MwF0B0FkHfu4oJsWZ2qN/lwUYoQ8g39c6cDIZebdAuQ27bQOI5pGvZayroRoZV yV8uKyimZsQQz2DZ+2IVR4QhH9g1Z8hH0MHdIVCKv+cJprTLNQ8M0bAYL0rmF4Y/ypiEMRTwvX Ds2ZrteK0eQhzqOZO5J77g1Gesjj5BviRvNJELRTLU4NXFdCYYpzo4CTINJFknxI6fFIvSXCv9 UkM= WDCIronportException: Internal Received: from unknown (HELO redsun60.ssa.fujisawa.hgst.com) ([10.149.66.36]) by uls-op-cesaip02.wdc.com with ESMTP; 10 Mar 2020 02:47:18 -0700 From: Johannes Thumshirn To: Jens Axboe Cc: Christoph Hellwig , linux-block , Damien Le Moal , Keith Busch , "linux-scsi @ vger . kernel . org" , "Martin K . Petersen" , Johannes Thumshirn Subject: [PATCH 05/11] block: introduce BLK_STS_ZONE_RESOURCE Date: Tue, 10 Mar 2020 18:46:47 +0900 Message-Id: <20200310094653.33257-6-johannes.thumshirn@wdc.com> X-Mailer: git-send-email 2.24.1 In-Reply-To: <20200310094653.33257-1-johannes.thumshirn@wdc.com> References: <20200310094653.33257-1-johannes.thumshirn@wdc.com> MIME-Version: 1.0 Sender: linux-scsi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org BLK_STS_ZONE_RESOURCE is returned from the driver to the block layer if zone related resources are unavailable, but the driver can guarantee the queue will be rerun in the future once the resources become available again. Signed-off-by: Johannes Thumshirn --- include/linux/blk_types.h | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/include/linux/blk_types.h b/include/linux/blk_types.h index ae809f07aa27..824ec2d89954 100644 --- a/include/linux/blk_types.h +++ b/include/linux/blk_types.h @@ -63,6 +63,18 @@ typedef u8 __bitwise blk_status_t; */ #define BLK_STS_DEV_RESOURCE ((__force blk_status_t)13) +/* + * BLK_STS_ZONE_RESOURCE is returned from the driver to the block layer if zone + * related resources are unavailable, but the driver can guarantee the queue + * will be rerun in the future once the resources become available again. + * + * This is different from BLK_STS_DEV_RESOURCE in that it explicitly references + * a zone specific resource and IO to a different zone on the same device could + * still be served. Examples of that are zones that are write-locked, but a read + * to the same zone could be served. + */ +#define BLK_STS_ZONE_RESOURCE ((__force blk_status_t)14) + /** * blk_path_error - returns true if error may be path related * @error: status the request was completed with