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dm: change ->end_io calling convention

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Turn the error paramter into a pointer so that target drivers can change
the value, and make sure only DM_ENDIO_* values are returned from the
methods.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
This commit is contained in:
Christoph Hellwig
2017-06-03 09:38:03 +02:00
committed by Jens Axboe
parent 846785e6a5
commit 1be5690984
10 changed files with 51 additions and 50 deletions
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14
drivers/md/dm-stripe.c
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@@ -375,20 +375,20 @@ static void stripe_status(struct dm_target *ti, status_type_t type,
}
}
static int stripe_end_io(struct dm_target *ti, struct bio *bio, int error)
static int stripe_end_io(struct dm_target *ti, struct bio *bio, int *error)
{
unsigned i;
char major_minor[16];
struct stripe_c *sc = ti->private;
if (!error)
return 0; /* I/O complete */
if (!*error)
return DM_ENDIO_DONE; /* I/O complete */
if (bio->bi_opf & REQ_RAHEAD)
return error;
return DM_ENDIO_DONE;
if (error == -EOPNOTSUPP)
return error;
if (*error == -EOPNOTSUPP)
return DM_ENDIO_DONE;
memset(major_minor, 0, sizeof(major_minor));
sprintf(major_minor, "%d:%d",
@@ -409,7 +409,7 @@ static int stripe_end_io(struct dm_target *ti, struct bio *bio, int error)
schedule_work(&sc->trigger_event);
}
return error;
return DM_ENDIO_DONE;
}
static int stripe_iterate_devices(struct dm_target *ti,