forked from luck/tmp_suning_uos_patched
xfs: publish UUID in struct super_block
Copy the uuid of the filesystem to struct super_block s_uuid field, as several other filesystems already do. Copy regardless of the nouuid mount option, because other filesystems also do not guaranty uniqueness of the s_uuid field in super_block struct. Signed-off-by: Amir Goldstein <amir73il@gmail.com> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
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@ -73,6 +73,10 @@ xfs_uuid_mount(
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uuid_t *uuid = &mp->m_sb.sb_uuid;
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int hole, i;
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/* Publish UUID in struct super_block */
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BUILD_BUG_ON(sizeof(mp->m_super->s_uuid) != sizeof(uuid_t));
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memcpy(&mp->m_super->s_uuid, uuid, sizeof(uuid_t));
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if (mp->m_flags & XFS_MOUNT_NOUUID)
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return 0;
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