Messages in this thread | | | Date | Wed, 30 Jun 2010 12:41:55 +0200 | From | Christoph Hellwig <> | Subject | Re: [PATCH 1/2] block: fix leaks associated with discard request payload |
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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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