[PATCH] dm: improve error message consistency
Tidy device-mapper error messages to include context information
automatically.
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
diff --git a/drivers/md/dm-zero.c b/drivers/md/dm-zero.c
index 51c0639..ea569f7 100644
--- a/drivers/md/dm-zero.c
+++ b/drivers/md/dm-zero.c
@@ -10,13 +10,15 @@
#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 = "dm-zero: No arguments required";
+ ti->error = "No arguments required";
return -EINVAL;
}
@@ -60,7 +62,7 @@
int r = dm_register_target(&zero_target);
if (r < 0)
- DMERR("zero: register failed %d", r);
+ DMERR("register failed %d", r);
return r;
}
@@ -70,7 +72,7 @@
int r = dm_unregister_target(&zero_target);
if (r < 0)
- DMERR("zero: unregister failed %d", r);
+ DMERR("unregister failed %d", r);
}
module_init(dm_zero_init)