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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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4
drivers/md/dm-snap.c
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@@ -1851,14 +1851,14 @@ out_unlock:
return r;
}
static int snapshot_end_io(struct dm_target *ti, struct bio *bio, int error)
static int snapshot_end_io(struct dm_target *ti, struct bio *bio, int *error)
{
struct dm_snapshot *s = ti->private;
if (is_bio_tracked(bio))
stop_tracking_chunk(s, bio);
return 0;
return DM_ENDIO_DONE;
}
static void snapshot_merge_presuspend(struct dm_target *ti)