dm table: allow targets to support discards internally
authorMike Snitzer <snitzer@redhat.com>
Sun, 29 May 2011 11:52:55 +0000 (12:52 +0100)
committerAlasdair G Kergon <agk@redhat.com>
Sun, 29 May 2011 11:52:55 +0000 (12:52 +0100)
Permit a target to support discards regardless of whether or not all its
underlying devices do.

Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>

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