From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752850Ab2GBNUg (ORCPT ); Mon, 2 Jul 2012 09:20:36 -0400 Received: from mail-wi0-f172.google.com ([209.85.212.172]:37954 "EHLO mail-wi0-f172.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751440Ab2GBNUd (ORCPT ); Mon, 2 Jul 2012 09:20:33 -0400 From: Paolo Bonzini To: linux-kernel@vger.kernel.org Cc: snitzer@redhat.com, david@fromorbit.com, dm-devel@redhat.com, xfs@oss.sgi.com, hch@lst.de, martin.petersen@oracle.com, axboe@kernel.dk Subject: [PATCH v2 1/3] block: add sysfs entry for discard_alignment Date: Mon, 2 Jul 2012 15:20:23 +0200 Message-Id: <1341235225-27551-2-git-send-email-pbonzini@redhat.com> X-Mailer: git-send-email 1.7.10.2 In-Reply-To: <1341235225-27551-1-git-send-email-pbonzini@redhat.com> References: <1341235225-27551-1-git-send-email-pbonzini@redhat.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org The next patches will actually use the alignment, expose it in sysfs for ease of debugging. Cc: Jens Axboe Signed-off-by: Paolo Bonzini --- block/blk-sysfs.c | 11 +++++++++++ 1 files changed, 11 insertions(+), 0 deletions(-) diff --git a/block/blk-sysfs.c b/block/blk-sysfs.c index aa41b47..95e919c 100644 --- a/block/blk-sysfs.c +++ b/block/blk-sysfs.c @@ -146,6 +146,11 @@ static ssize_t queue_io_opt_show(struct request_queue *q, char *page) return queue_var_show(queue_io_opt(q), page); } +static ssize_t queue_discard_alignment_show(struct request_queue *q, char *page) +{ + return queue_var_show(q->limits.discard_alignment, page); +} + static ssize_t queue_discard_granularity_show(struct request_queue *q, char *page) { return queue_var_show(q->limits.discard_granularity, page); @@ -343,6 +348,11 @@ static struct queue_sysfs_entry queue_io_opt_entry = { .show = queue_io_opt_show, }; +static struct queue_sysfs_entry queue_discard_alignment_entry = { + .attr = {.name = "discard_alignment", .mode = S_IRUGO }, + .show = queue_discard_alignment_show, +}; + static struct queue_sysfs_entry queue_discard_granularity_entry = { .attr = {.name = "discard_granularity", .mode = S_IRUGO }, .show = queue_discard_granularity_show, @@ -403,6 +413,7 @@ static struct attribute *default_attrs[] = { &queue_io_min_entry.attr, &queue_io_opt_entry.attr, &queue_discard_granularity_entry.attr, + &queue_discard_alignment_entry.attr, &queue_discard_max_entry.attr, &queue_discard_zeroes_data_entry.attr, &queue_nonrot_entry.attr, -- 1.7.1