Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756863Ab3GVPEW (ORCPT ); Mon, 22 Jul 2013 11:04:22 -0400 Received: from mx1.redhat.com ([209.132.183.28]:4323 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755702Ab3GVPET (ORCPT ); Mon, 22 Jul 2013 11:04:19 -0400 Date: Mon, 22 Jul 2013 17:03:59 +0200 From: Alexander Gordeev To: "Nicholas A. Bellinger" Cc: James Bottomley , Jens Axboe , Mike Christie , Tejun Heo , linux-kernel@vger.kernel.org, linux-ide@vger.kernel.org, Jeff Garzik , linux-scsi Subject: Re: [PATCH RESEND 0/1] AHCI: Optimize interrupt processing Message-ID: <20130722150359.GA16564@dhcp-26-207.brq.redhat.com> References: <20130717161909.GB21468@dhcp-26-207.brq.redhat.com> <1374173515.7397.948.camel@haakon3.risingtidesystems.com> <51E83E32.9050306@cs.wisc.edu> <1374193399.7397.973.camel@haakon3.risingtidesystems.com> <20130719003034.GG28005@kernel.dk> <1374195825.7397.997.camel@haakon3.risingtidesystems.com> <1374215660.7397.1041.camel@haakon3.risingtidesystems.com> <1374248000.2266.20.camel@dabdike> <1374267684.7397.1058.camel@haakon3.risingtidesystems.com> <1374296162.7397.1098.camel@haakon3.risingtidesystems.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1374296162.7397.1098.camel@haakon3.risingtidesystems.com> User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1034 Lines: 26 On Fri, Jul 19, 2013 at 09:56:02PM -0700, Nicholas A. Bellinger wrote: > On Fri, 2013-07-19 at 14:01 -0700, Nicholas A. Bellinger wrote: > OK, after further investigation the root cause is a actually a missing > bio->bio_end_io() -> bio_copy_kern_endio() -> bio_put() from the > blk_end_sync_rq() callback path that scsi-mq REQ_TYPE_BLOCK_PC is > currently using. Yes, missing bio_copy_kern_endio() callback is exactly the reason I turned to blk_mq_execute_rq() initially. I should have been more specific on this :| I will try Mike's and your other change, hopefully soon (sorry, constantly getting distracted). > Including the following patch into the scsi-mq working branch now, and > reverting the libata dma_alignment=0x03 hack. -- Regards, Alexander Gordeev agordeev@redhat.com -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/