From: Joe Thornber Date: Fri, 27 Jul 2012 14:08:11 +0000 (+0100) Subject: dm thin metadata: zero unused superblock uuid X-Git-Tag: Ubuntu-5.10.0-12.13~20941^2~16 X-Git-Url: https://git.proxmox.com/?a=commitdiff_plain;h=583ceee2ed1d171718aee348163f2ed25d461772;p=mirror_ubuntu-hirsute-kernel.git dm thin metadata: zero unused superblock uuid Zero the unused uuid when initialising the metadata superblock. Signed-off-by: Joe Thornber Signed-off-by: Mike Snitzer Signed-off-by: Alasdair G Kergon --- diff --git a/drivers/md/dm-thin-metadata.c b/drivers/md/dm-thin-metadata.c index 934b3fc7bfc9..9f7c1e01dda2 100644 --- a/drivers/md/dm-thin-metadata.c +++ b/drivers/md/dm-thin-metadata.c @@ -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;