pstore: Add extra context for writes and erases
EFI only provides small amounts of individual storage, and conventionally
puts metadata in the storage variable name. Rather than add a metadata
header to the (already limited) variable storage, it's easier for us to
modify pstore to pass all the information we need to construct a unique
variable name to the appropriate functions.
Signed-off-by: Matthew Garrett <mjg@redhat.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
diff --git a/fs/pstore/inode.c b/fs/pstore/inode.c
index b19884a..893b961 100644
--- a/fs/pstore/inode.c
+++ b/fs/pstore/inode.c
@@ -39,8 +39,9 @@
#define PSTORE_NAMELEN 64
struct pstore_private {
- u64 id;
struct pstore_info *psi;
+ enum pstore_type_id type;
+ u64 id;
ssize_t size;
char data[];
};
@@ -73,7 +74,7 @@
{
struct pstore_private *p = dentry->d_inode->i_private;
- p->psi->erase(p->id, p->psi);
+ p->psi->erase(p->type, p->id, p->psi);
return simple_unlink(dir, dentry);
}
@@ -192,6 +193,7 @@
private = kmalloc(sizeof *private + size, GFP_KERNEL);
if (!private)
goto fail_alloc;
+ private->type = type;
private->id = id;
private->psi = psi;
