From a34d5e8a6ad1a31b186019c9c351777626698863 Mon Sep 17 00:00:00 2001 From: Dan Williams Date: Sat, 12 Dec 2015 16:09:14 -0800 Subject: libnvdimm, pfn: add parent uuid validation Track and check the uuid of the namespace hosting a pfn instance. This forces the pfn info block to be invalidated if the namespace is re-configured with a different uuid. Signed-off-by: Dan Williams --- drivers/nvdimm/pmem.c | 1 + 1 file changed, 1 insertion(+) (limited to 'drivers/nvdimm/pmem.c') diff --git a/drivers/nvdimm/pmem.c b/drivers/nvdimm/pmem.c index 5ba351e..dc68667 100644 --- a/drivers/nvdimm/pmem.c +++ b/drivers/nvdimm/pmem.c @@ -270,6 +270,7 @@ static int nd_pfn_init(struct nd_pfn *nd_pfn) pfn_sb->npfns = cpu_to_le64(npfns); memcpy(pfn_sb->signature, PFN_SIG, PFN_SIG_LEN); memcpy(pfn_sb->uuid, nd_pfn->uuid, 16); + memcpy(pfn_sb->parent_uuid, nd_dev_to_uuid(&ndns->dev), 16); pfn_sb->version_major = cpu_to_le16(1); checksum = nd_sb_checksum((struct nd_gen_sb *) pfn_sb); pfn_sb->checksum = cpu_to_le64(checksum); -- cgit v1.1