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 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.lore.kernel.org (Postfix) with ESMTPS id 2D212C433FE for ; Wed, 19 Oct 2022 07:27:25 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:In-Reply-To:Content-Type: MIME-Version:References:Message-ID:Subject:Cc:To:From:Date:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=GHst/fg5KebU+K1i477z80529nQeE97zp+/z5V2mW5g=; b=1fZsnHAV/xMt2Sf0fdr3kETUzQ iwqplTVJlDQK119/bSEzJYWTwhdaEF5twmWcEcSK25tFLnLh1Lf6t32meBh7isy0Ce5WHuslWZBS1 qkRcj8NPRSA+GT8SbXB7RGULoyxhrSkfIWs/DV7RdjmbpQwlaxfKqxGngW8wDFnOj5n6U/N9h0vcJ XE5TpHVONYsYRJn/F6n0bY4nblcRl8fSfftb+2HcwKqwlbtEu7VeTkIXuzihwBMUs4JmimN0bR48F jL1PEv7BYDN64T07fGM+0Xo/jK3qb0aD3O+lKCFN4IzxrSjxy+SbZHjGyWv1PH6l5JkkyHDEbWK2U 2LlimtPQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1ol3U2-00GAwR-1z; Wed, 19 Oct 2022 07:27:22 +0000 Received: from verein.lst.de ([213.95.11.211]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1ol3Ty-00GAuU-21 for linux-nvme@lists.infradead.org; Wed, 19 Oct 2022 07:27:20 +0000 Received: by verein.lst.de (Postfix, from userid 2407) id 32DB368C4E; Wed, 19 Oct 2022 09:27:15 +0200 (CEST) Date: Wed, 19 Oct 2022 09:27:14 +0200 From: Christoph Hellwig To: Sagi Grimberg Cc: Ming Lei , Christoph Hellwig , "Paul E. McKenney" , Chao Leng , linux-nvme@lists.infradead.org, linux-block@vger.kernel.org, kbusch@kernel.org, axboe@kernel.dk Subject: Re: [PATCH v2 1/2] blk-mq: add tagset quiesce interface Message-ID: <20221019072714.GA11606@lst.de> References: <20221013094450.5947-1-lengchao@huawei.com> <20221013094450.5947-2-lengchao@huawei.com> <20221017133906.GA24492@lst.de> <20221017152136.GI5600@paulmck-ThinkPad-P17-Gen-1> <20221017153105.GA32509@lst.de> <20221017224115.GJ5600@paulmck-ThinkPad-P17-Gen-1> <20221018051956.GA18802@lst.de> <9da048fc-71ee-cc38-a861-59acc96671fe@grimberg.me> <20221019072535.GA11402@lst.de> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20221019072535.GA11402@lst.de> User-Agent: Mutt/1.5.17 (2007-11-01) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20221019_002719_081732_D0828EF6 X-CRM114-Status: GOOD ( 14.89 ) X-BeenThere: linux-nvme@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-nvme" Errors-To: linux-nvme-bounces+linux-nvme=archiver.kernel.org@lists.infradead.org On Wed, Oct 19, 2022 at 09:25:35AM +0200, Christoph Hellwig wrote: > Yes, the only multiple request_queue per tag_set cases right now > are nvme-tcp and mmc. There have been patches from iSCSI, but they > seem to be stuck. ... and looking at the only blk_mq_quiesce_queue caller in mmc, it would benefit from a tagset-wide quiesce after a bit of refactoring as well.