Alexander Motin 609a74746a Add basic BIO_DELETE support to GEOM RAID class for all RAID levels.
If at least one subdisk in the volume supports it, BIO_DELETE requests
will be propagated down.  Unfortunatelly, for RAID levels with redundancy
unmapped blocks will be mapped back during first rebuild/resync process.

Sponsored by:	iXsystems, Inc.
MFC after:	1 month
2012-10-29 18:04:38 +00:00
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2012-08-28 19:28:31 +00:00
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