From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755278AbbHGHbD (ORCPT ); Fri, 7 Aug 2015 03:31:03 -0400 Received: from verein.lst.de ([213.95.11.211]:53504 "EHLO newverein.lst.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754683AbbHGHbA (ORCPT ); Fri, 7 Aug 2015 03:31:00 -0400 Date: Fri, 7 Aug 2015 09:30:59 +0200 From: Christoph Hellwig To: Kent Overstreet Cc: Christoph Hellwig , Ming Lin , Mike Snitzer , lkml , Jens Axboe , Dongsu Park , Christoph Hellwig , Al Viro , Ming Lei , Neil Brown , Alasdair Kergon , dm-devel@redhat.com, Lars Ellenberg , drbd-user@lists.linbit.com, Jiri Kosina , Geoff Levand , Jim Paris , Joshua Morris , Philip Kelleher , Minchan Kim , Nitin Gupta , Oleg Drokin , Andreas Dilger , Ming Lin Subject: Re: [PATCH v5 01/11] block: make generic_make_request handle arbitrarily sized bios Message-ID: <20150807073059.GB17485@lst.de> References: <1436168690-32102-1-git-send-email-mlin@kernel.org> <20150731192337.GA8907@redhat.com> <20150731213831.GA16464@redhat.com> <1438412290.26596.14.camel@hasee> <20150801163356.GA21478@redhat.com> <1438581502.26596.24.camel@hasee> <20150804113626.GA12682@lst.de> <20150807000004.GB30757@moria.home.lan> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20150807000004.GB30757@moria.home.lan> User-Agent: Mutt/1.5.17 (2007-11-01) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, Aug 06, 2015 at 05:00:04PM -0700, Kent Overstreet wrote: > Why is it that we don't want to send giant discards? Is it a latency issue? Yes. Take a look at the "Configurable max discard size" thread(s). From mboxrd@z Thu Jan 1 00:00:00 1970 From: Christoph Hellwig Subject: Re: [PATCH v5 01/11] block: make generic_make_request handle arbitrarily sized bios Date: Fri, 7 Aug 2015 09:30:59 +0200 Message-ID: <20150807073059.GB17485@lst.de> References: <1436168690-32102-1-git-send-email-mlin@kernel.org> <20150731192337.GA8907@redhat.com> <20150731213831.GA16464@redhat.com> <1438412290.26596.14.camel@hasee> <20150801163356.GA21478@redhat.com> <1438581502.26596.24.camel@hasee> <20150804113626.GA12682@lst.de> <20150807000004.GB30757@moria.home.lan> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Content-Disposition: inline In-Reply-To: <20150807000004.GB30757-jC9Py7bek1znysI04z7BkA@public.gmane.org> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: drbd-dev-bounces-cunTk1MwBs8qoQakbn7OcQ@public.gmane.org Errors-To: drbd-dev-bounces-cunTk1MwBs8qoQakbn7OcQ@public.gmane.org To: Kent Overstreet Cc: Mike Snitzer , Neil Brown , Ming Lei , dm-devel-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org, Joshua Morris , Alasdair Kergon , Lars Ellenberg , Philip Kelleher , Christoph Hellwig , Christoph Hellwig , Nitin Gupta , Ming Lin , Oleg Drokin , Al Viro , Ming Lin , Jens Axboe , Andreas Dilger , Geoff Levand , Jiri Kosina , lkml , Jim Paris , Minchan Kim , Dongsu Park , drbd-user-cunTk1MwBs8qoQakbn7OcQ@public.gmane.org List-Id: dm-devel.ids On Thu, Aug 06, 2015 at 05:00:04PM -0700, Kent Overstreet wrote: > Why is it that we don't want to send giant discards? Is it a latency issue? Yes. Take a look at the "Configurable max discard size" thread(s).