Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1033156AbdDTQLL convert rfc822-to-8bit (ORCPT ); Thu, 20 Apr 2017 12:11:11 -0400 Received: from mga14.intel.com ([192.55.52.115]:36822 "EHLO mga14.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1033109AbdDTQKV (ORCPT ); Thu, 20 Apr 2017 12:10:21 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.37,225,1488873600"; d="scan'208";a="848069967" From: "Reshetova, Elena" To: Christoph Hellwig CC: "axboe@kernel.dk" , "james.bottomley@hansenpartnership.com" , "linux-kernel@vger.kernel.org" , "linux-block@vger.kernel.org" , "linux-scsi@vger.kernel.org" , "linux-btrfs@vger.kernel.org" , "peterz@infradead.org" , "gregkh@linuxfoundation.org" , "fujita.tomonori@lab.ntt.co.jp" , "mingo@redhat.com" , "clm@fb.com" , "jbacik@fb.com" , "dsterba@suse.com" Subject: RE: [PATCH 0/5] v2: block subsystem refcounter conversions Thread-Topic: [PATCH 0/5] v2: block subsystem refcounter conversions Thread-Index: AQHSuckhCXSkPmTXFUy5582/STYo0aHON5WAgAA1nuA= Date: Thu, 20 Apr 2017 16:10:16 +0000 Message-ID: <2236FBA76BA1254E88B949DDB74E612B41C8DA36@IRSMSX102.ger.corp.intel.com> References: <1492687644-4405-1-git-send-email-elena.reshetova@intel.com> <20170420135651.GA26595@infradead.org> In-Reply-To: <20170420135651.GA26595@infradead.org> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: dlp-product: dlpe-windows dlp-version: 10.0.102.7 dlp-reaction: no-action x-originating-ip: [163.33.239.182] Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 8BIT MIME-Version: 1.0 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 361 Lines: 12 > All the objections from DaveM on the amount of cycles spent on the > new refcount_t apply to the block layer fast path operations as well. Ok, could you please indicate the correct way to measure the impact for the block layer? We can do the measurements. Best Regards, Elena. > > Please don't send any more conversions until those have been resolved.