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dm thin metadata: zero unused superblock uuid

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Zero the unused uuid when initialising the metadata superblock.

Signed-off-by: Joe Thornber <ejt@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
This commit is contained in:
Joe Thornber 2012-07-27 15:08:11 +01:00 committed by Alasdair G Kergon
parent 270938bac5
commit 583ceee2ed
1 changed files with 1 additions and 0 deletions
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drivers/md/dm-thin-metadata.c
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@ -455,6 +455,7 @@ static int __write_initial_superblock(struct dm_pool_metadata *pmd)
disk_super = dm_block_data(sblock);
disk_super->flags = 0;
memset(disk_super->uuid, 0, sizeof(disk_super->uuid));
disk_super->magic = cpu_to_le64(THIN_SUPERBLOCK_MAGIC);
disk_super->version = cpu_to_le32(THIN_VERSION);
disk_super->time = 0;