[SCSI] Return ENODATA on medium error
When a medium error is detected the SCSI stack should return
ENODATA to the upper layers.
[jejb: fix whitespace error]
Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
diff --git a/drivers/md/dm-mpath.c b/drivers/md/dm-mpath.c
index 5adede1..b759a127 100644
--- a/drivers/md/dm-mpath.c
+++ b/drivers/md/dm-mpath.c
@@ -1261,6 +1261,20 @@
pg_init_done, pgpath);
}
+static int noretry_error(int error)
+{
+ switch (error) {
+ case -EOPNOTSUPP:
+ case -EREMOTEIO:
+ case -EILSEQ:
+ case -ENODATA:
+ return 1;
+ }
+
+ /* Anything else could be a path failure, so should be retried */
+ return 0;
+}
+
/*
* end_io handling
*/
@@ -1284,7 +1298,7 @@
if (!error && !clone->errors)
return 0; /* I/O complete */
- if (error == -EOPNOTSUPP || error == -EREMOTEIO || error == -EILSEQ)
+ if (noretry_error(error))
return error;
if (mpio->pgpath)
