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ext4: Copy fs UUID to superblock

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File system UUID is made available to application
via  /proc/<pid>/mountinfo

Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Aneesh Kumar K.V 2011-01-29 18:43:40 +05:30 committed by Al Viro
parent 03cb5f03dc
commit f2fa2ffc20
1 changed files with 2 additions and 0 deletions
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2
fs/ext4/super.c
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@ -3415,6 +3415,8 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent)
sb->s_qcop = &ext4_qctl_operations; sb->s_qcop = &ext4_qctl_operations;
sb->dq_op = &ext4_quota_operations; sb->dq_op = &ext4_quota_operations;
#endif #endif
memcpy(sb->s_uuid, es->s_uuid, sizeof(es->s_uuid));
INIT_LIST_HEAD(&sbi->s_orphan); /* unlinked but open files */ INIT_LIST_HEAD(&sbi->s_orphan); /* unlinked but open files */
mutex_init(&sbi->s_orphan_lock); mutex_init(&sbi->s_orphan_lock);
mutex_init(&sbi->s_resize_lock); mutex_init(&sbi->s_resize_lock);