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authorHannes Reinecke <hare@suse.de>2013-07-01 15:16:26 +0200
committerJames Bottomley <JBottomley@Parallels.com>2013-08-23 12:54:53 -0400
commit7e782af57649f8a8e943d80104c946a5cd7af7cc (patch)
tree3ad0cfe04ce16a2a07c50cdfa55a60149de50fc7 /drivers/md/dm-mpath.c
parenta9d6ceb838755c24dde8a0ca02c3378926fc63db (diff)
[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>
Diffstat (limited to 'drivers/md/dm-mpath.c')
-rw-r--r--drivers/md/dm-mpath.c16
1 files changed, 15 insertions, 1 deletions
diff --git a/drivers/md/dm-mpath.c b/drivers/md/dm-mpath.c
index 5adede17ddf6..b759a127f9c3 100644
--- a/drivers/md/dm-mpath.c
+++ b/drivers/md/dm-mpath.c
@@ -1261,6 +1261,20 @@ static void activate_path(struct work_struct *work)
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 @@ static int do_end_io(struct multipath *m, struct request *clone,
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)