[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>

1 files changed, 5 insertions, 3 deletions

diff --git a/drivers/md/dm-linear.c b/drivers/md/dm-linear.c
index daf586c0898d..47b3c62bbdb8 100644
--- a/drivers/md/dm-linear.c
+++ b/drivers/md/dm-linear.c
@@ -12,6 +12,8 @@
 #include <linux/bio.h>
 #include <linux/slab.h>
 
+#define DM_MSG_PREFIX "linear"
+
 /*
  * Linear: maps a linear range of a device.
  */
@@ -29,7 +31,7 @@ static int linear_ctr(struct dm_target *ti, unsigned int argc, char **argv)
         unsigned long long tmp;
 
         if (argc != 2) {
-                ti->error = "dm-linear: Invalid argument count";
+                ti->error = "Invalid argument count";
                 return -EINVAL;
         }
 
@@ -111,7 +113,7 @@ int __init dm_linear_init(void)
         int r = dm_register_target(&linear_target);
 
         if (r < 0)
-                DMERR("linear: register failed %d", r);
+                DMERR("register failed %d", r);
 
         return r;
 }
@@ -121,5 +123,5 @@ void dm_linear_exit(void)
         int r = dm_unregister_target(&linear_target);
 
         if (r < 0)
-                DMERR("linear: unregister failed %d", r);
+                DMERR("unregister failed %d", r);
 }