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    SubjectRe: [PATCH 1/2] block: fix leaks associated with discard request payload
    On Wed, Jun 30, 2010 at 01:25:01PM +0300, Boaz Harrosh wrote:
    > OK, Thanks, I see. Is it one of these operations, (like we have in OSD) where
    > the CDB information spills into the payload? like the scatter-gather and extent
    > lists and such.

    For UNMAP the payload is a list of block number / length pairs, while
    the CDB itself doesn't contain any information like that. It's a rather
    awkward command.

    > Do we actually use a WRITE_SAME which is not zero? for what use?

    The kernel doesn't issue any WRITE SAME without the unmap bit set.


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