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    SubjectRe: [PATCH v2] block: Don't count_vm_events for discard bio in submit_bio.
    On 2010-06-24 02:28, Tao Ma wrote:
    > Hi Andrew,
    >> Yes, that's a buglet.
    >> Note that Christoph's "[PATCH, RFC] block: don't allocate a payload for
    >> discard request" will fix it in a better way. That patch is in
    >> linux-next now, but I expect it will be taken out again (quickly,
    >> please) because Mike has found a number of problems with it.
    > ok, I haven't noticed that. thanks for the info.
    >> Your patch looks like a decent temporary fix for mainline, and a
    >> permanent one for -stable.
    > I am sorry, but I made a mistake. BIO_RW_DISCARD is a enum for bit offset.
    > So the right check should be rw & (1 << BIO_RW_DISCARD).
    > I have regenerated the patch. Sorry for the inconvenience.

    Thanks, this one looks good. Applied.

    Jens Axboe

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