Mikulas Patocka 7b76ec11fe
dm stripe: support discards ...
The DM core will submit a discard bio to the stripe target for each
stripe in a striped DM device. The stripe target will determine
stripe-specific portions of the supplied bio to be remapped into
individual (at most 'num_discard_requests' extents). If a given
stripe-specific discard bio doesn't touch a particular stripe the bio
will be dropped.
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com >
Signed-off-by: Mike Snitzer <snitzer@redhat.com >
Signed-off-by: Alasdair G Kergon <agk@redhat.com >
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