From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752078AbcFWVGm (ORCPT ); Thu, 23 Jun 2016 17:06:42 -0400 Received: from mx1.redhat.com ([209.132.183.28]:49667 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751728AbcFWVFy (ORCPT ); Thu, 23 Jun 2016 17:05:54 -0400 From: Mike Snitzer To: axboe@kernel.dk, toshi.kani@hpe.com, dan.j.williams@intel.com Cc: ross.zwisler@linux.intel.com, viro@zeniv.linux.org.uk, linux-nvdimm@ml01.01.org, dm-devel@redhat.com, linux-kernel@vger.kernel.org, yigal@plexistor.com Subject: [PATCH v3 2/4] block: expose QUEUE_FLAG_DAX in sysfs Date: Thu, 23 Jun 2016 17:05:51 -0400 Message-Id: <1466715953-40692-3-git-send-email-snitzer@redhat.com> In-Reply-To: <1466715953-40692-1-git-send-email-snitzer@redhat.com> References: <1466715953-40692-1-git-send-email-snitzer@redhat.com> X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.27]); Thu, 23 Jun 2016 21:05:54 +0000 (UTC) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Yigal Korman Provides the ability to identify DAX enabled devices in userspace. Signed-off-by: Yigal Korman Signed-off-by: Toshi Kani Acked-by: Dan Williams Signed-off-by: Mike Snitzer --- block/blk-sysfs.c | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/block/blk-sysfs.c b/block/blk-sysfs.c index 9920596..f87a7e7 100644 --- a/block/blk-sysfs.c +++ b/block/blk-sysfs.c @@ -379,6 +379,11 @@ static ssize_t queue_wc_store(struct request_queue *q, const char *page, return count; } +static ssize_t queue_dax_show(struct request_queue *q, char *page) +{ + return queue_var_show(blk_queue_dax(q), page); +} + static struct queue_sysfs_entry queue_requests_entry = { .attr = {.name = "nr_requests", .mode = S_IRUGO | S_IWUSR }, .show = queue_requests_show, @@ -516,6 +521,11 @@ static struct queue_sysfs_entry queue_wc_entry = { .store = queue_wc_store, }; +static struct queue_sysfs_entry queue_dax_entry = { + .attr = {.name = "dax", .mode = S_IRUGO }, + .show = queue_dax_show, +}; + static struct attribute *default_attrs[] = { &queue_requests_entry.attr, &queue_ra_entry.attr, @@ -542,6 +552,7 @@ static struct attribute *default_attrs[] = { &queue_random_entry.attr, &queue_poll_entry.attr, &queue_wc_entry.attr, + &queue_dax_entry.attr, NULL, }; -- 2.7.4 (Apple Git-66)