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    SubjectRe: next bio iters break discard?
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    >>>>> "Kent" == Kent Overstreet <kmo@daterainc.com> writes:

    >> IOW, DISCARD, WRITE SAME and the impending COPY requests do not have
    >> a 1:1 mapping between the block range worked on and the size of any
    >> bvecs attached. Your recent changes must have changed the way we
    >> handled that in the past.

    Kent> Yeah - but with WRITE_SAME bios, wouldn't we at least have to
    Kent> check that they're writing the same data to merge them?

    We do. Check blk_write_same_mergeable().

    --
    Martin K. Petersen Oracle Linux Engineering


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