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[SCSI] Return ENODATA on medium error

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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 <[email protected]>
Signed-off-by: James Bottomley <[email protected]>
This commit is contained in:
Hannes Reinecke 2013-07-01 15:16:26 +02:00 • committed by James Bottomley
commit 7e782af576
5 changed files with 25 additions and 2 deletions
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16
drivers/md/dm-mpath.c
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@ -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)