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 96CDBC433EF for ; Fri, 11 Mar 2022 06:48:57 +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=VaFGpSV9rTg+DvnC3WZtuQIZUPfcp6fvoQpNSdImkNU=; b=CmxRBsDYiyCBDid5wmPEVQPpMD BI2znoCXs9cMcNNMfP8YOJU++lu19lD2onC2/mWQ/UrM/sgXNrLkSYe0KVkbzO+CN9lE0kRFSTS+b RYX7MqeJdinr1Q0gQUp3YrQ/RkjMK0d/euQqcnunN+JCgM0kYY7elz7/3olyt1PW94eBAC2w8n48+ XO+JA/gUEBsIbvg/pP+tenuCe/Eyv7b/imREmCLOC2HHCdsLkeV1mBpRQ9EiTpngQrMOwHPVrGSYc l9yzO/3ZgQUjaBEOdiKtDtCw6ImaZCEUtcr/IZBz1pW+r9N1Ryl0ZYvhfGtglWDvUA49xduD09plP geySYfdA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1nSZ54-00FGeG-DL; Fri, 11 Mar 2022 06:48:54 +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 1nSZ51-00FGdR-P8 for linux-nvme@lists.infradead.org; Fri, 11 Mar 2022 06:48:53 +0000 Received: by verein.lst.de (Postfix, from userid 2407) id 8B72F68AFE; Fri, 11 Mar 2022 07:48:47 +0100 (CET) Date: Fri, 11 Mar 2022 07:48:47 +0100 From: Christoph Hellwig To: Kanchan Joshi Cc: axboe@kernel.dk, hch@lst.de, kbusch@kernel.org, asml.silence@gmail.com, io-uring@vger.kernel.org, linux-nvme@lists.infradead.org, linux-block@vger.kernel.org, sbates@raithlin.com, logang@deltatee.com, pankydev8@gmail.com, javier@javigon.com, mcgrof@kernel.org, a.manzanares@samsung.com, joshiiitr@gmail.com, anuj20.g@samsung.com Subject: Re: [PATCH 12/17] nvme: enable bio-cache for fixed-buffer passthru Message-ID: <20220311064847.GA17728@lst.de> References: <20220308152105.309618-1-joshi.k@samsung.com> <20220308152105.309618-13-joshi.k@samsung.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20220308152105.309618-13-joshi.k@samsung.com> 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-20220310_224851_986612_9CBA7965 X-CRM114-Status: UNSURE ( 8.84 ) X-CRM114-Notice: Please train this message. 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 Tue, Mar 08, 2022 at 08:51:00PM +0530, Kanchan Joshi wrote: > Since we do submission/completion in task, we can have this up. > Add a bio-set for nvme as we need that for bio-cache. Well, passthrough I/O should just use kmalloced bios anyway, as there is no need for the mempool to start with. Take a look at the existing code in blk-map.c.