#include <linux/init.h>
#include <linux/bio.h>
-#define DM_MSG_PREFIX "zero"
-
/*
* Construct a dummy mapping that only returns zeros
*/
static int zero_ctr(struct dm_target *ti, unsigned int argc, char **argv)
{
if (argc != 0) {
- ti->error = "No arguments required";
+ ti->error = "dm-zero: No arguments required";
return -EINVAL;
}
int r = dm_register_target(&zero_target);
if (r < 0)
- DMERR("register failed %d", r);
+ DMERR("zero: register failed %d", r);
return r;
}
int r = dm_unregister_target(&zero_target);
if (r < 0)
- DMERR("unregister failed %d", r);
+ DMERR("zero: unregister failed %d", r);
}
module_init(dm_zero_init)