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From: Aneesh Kumar K.V on 18 May 2010 08:10
This enables userspace application to find the file system
UUID using sys_name_to_handle_at syscall

Acked-by: Serge Hallyn <serue(a)us.ibm.com>
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar(a)linux.vnet.ibm.com>
---
fs/ext4/super.c | 2 ++
1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index e14d22c..02ba21b 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -2828,6 +2828,8 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent)
sb->s_qcop = &ext4_qctl_operations;
sb->dq_op = &ext4_quota_operations;
#endif
+ memcpy(sb->s_uuid, es->s_uuid, sizeof(es->s_uuid));
+
INIT_LIST_HEAD(&sbi->s_orphan); /* unlinked but open files */
mutex_init(&sbi->s_orphan_lock);
mutex_init(&sbi->s_resize_lock);
--
1.7.1.78.g212f0

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