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(parent: 4498c36) | patch
dm: prepare to support WRITE SAME
authorMike Snitzer <snitzer@redhat.com>
Fri, 21 Dec 2012 20:23:36 +0000 (20:23 +0000)
committerAlasdair G Kergon <agk@redhat.com>
Fri, 21 Dec 2012 20:23:36 +0000 (20:23 +0000)
commitac74778aebcb664d831195702d7c5a9b9bbd393f
treebb40893166dc8cd1d0f84c8087d021b66774a007tree | snapshot
parent4498c366c8d50076e38c8d9efdf90a9a984ab30dcommit | diff
dm: prepare to support WRITE SAME

Allow targets to opt in to WRITE SAME support by setting
'num_write_same_requests' in the dm_target structure.

A dm device will only advertise WRITE SAME support if all its
targets and all its underlying devices support it.

Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
drivers/md/dm-table.c diff | blob | history
include/linux/device-mapper.h diff | blob | history
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