linux-kernel - [PATCH 17/58] [GFS2] Given device ID rather than s

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Message-Id: <1083867ce6c8bee18b9e8894b789ce1d0368e23b.1200905287.git.swhiteho@redhat.com>
Date:	Mon, 21 Jan 2008 09:21:35 +0000
From:	swhiteho@...hat.com
To:	linux-kernel@...r.kernel.org, cluster-devel@...hat.com
Cc:	Bob Peterson <rpeterso@...hat.com>,
	Steven Whitehouse <swhiteho@...hat.com>
Subject: [PATCH 17/58] [GFS2] Given device ID rather than s_id in "id" sysfs file

From: Bob Peterson <rpeterso@...hat.com>

This patch changes the /sys/fs/gfs2/<s_id>/id file to give the device
id "major:minor" rather than the s_id.  That enables gfs2_tool to
match devices properly (by id, not name) when locating the tuning files.

Signed-off-by: Bob Peterson <rpeterso@...hat.com>
Signed-off-by: Steven Whitehouse <swhiteho@...hat.com>

diff --git a/fs/gfs2/sys.c b/fs/gfs2/sys.c
index 1359198..65dd065 100644
--- a/fs/gfs2/sys.c
+++ b/fs/gfs2/sys.c
@@ -32,7 +32,8 @@ spinlock_t gfs2_sys_margs_lock;
 
 static ssize_t id_show(struct gfs2_sbd *sdp, char *buf)
 {
-	return snprintf(buf, PAGE_SIZE, "%s\n", sdp->sd_vfs->s_id);
+	return snprintf(buf, PAGE_SIZE, "%u:%u\n",
+			MAJOR(sdp->sd_vfs->s_dev), MINOR(sdp->sd_vfs->s_dev));
 }
 
 static ssize_t fsname_show(struct gfs2_sbd *sdp, char *buf)
-- 
1.5.1.2

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