linux-kernel - [PATCH 1/4] ocfs2: copy fs uuid to superblock

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Date:	Sun, 22 Feb 2015 21:31:52 +0300
From:	Vladimir Davydov <vdavydov@...allels.com>
To:	Andrew Morton <akpm@...ux-foundation.org>
CC:	Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>,
	Boris Ostrovsky <boris.ostrovsky@...cle.com>,
	David Vrabel <david.vrabel@...rix.com>,
	Mark Fasheh <mfasheh@...e.com>,
	Joel Becker <jlbec@...lplan.org>,
	Stefan Hengelein <ilendir@...glemail.com>,
	Florian Schmaus <fschmaus@...il.com>,
	Andor Daam <andor.daam@...glemail.com>,
	Dan Magenheimer <dan.magenheimer@...cle.com>,
	Bob Liu <lliubbo@...il.com>, <linux-mm@...ck.org>,
	<linux-kernel@...r.kernel.org>
Subject: [PATCH 1/4] ocfs2: copy fs uuid to superblock

This will allow us to remove the uuid argument from
cleancache_init_shared_fs.

Signed-off-by: Vladimir Davydov <vdavydov@...allels.com>
---
 fs/ocfs2/super.c |    2 ++
 1 file changed, 2 insertions(+)

diff --git a/fs/ocfs2/super.c b/fs/ocfs2/super.c
index 26675185b886..43f5a9e71b35 100644
--- a/fs/ocfs2/super.c
+++ b/fs/ocfs2/super.c
@@ -2069,6 +2069,8 @@ static int ocfs2_initialize_super(struct super_block *sb,
 	cbits = le32_to_cpu(di->id2.i_super.s_clustersize_bits);
 	bbits = le32_to_cpu(di->id2.i_super.s_blocksize_bits);
 	sb->s_maxbytes = ocfs2_max_file_offset(bbits, cbits);
+	memcpy(sb->s_uuid, di->id2.i_super.s_uuid,
+	       sizeof(di->id2.i_super.s_uuid));
 
 	osb->osb_dx_mask = (1 << (cbits - bbits)) - 1;
 
-- 
1.7.10.4

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