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    SubjectRe: [RFC][PATCH 1/3] radix priority search tree - objrmap complexity fix
    Andrea Arcangeli <andrea@suse.de> wrote:
    >
    > Then there's the pagebuf_associate_memory that rings
    > an extremely *loud* bell, pagebuf_get_no_daddr and XBUF_SET_PTR sounds
    > even more, then I go on with xlog_get_bp and tons of other things doing
    > pagebuf I/O with kmalloced memory with variable size of the kmalloc. Too
    > many concidences for this not being an xfs bug.

    It does pagebuf I/O with kmalloced memory? Wow. Pretty much anything
    which goes from kmalloc virtual addresses back to pageframes is a big fat
    warning sign.

    Do you see any reason why we shouldn't flip things around and make the
    hugetlb code explicitly request the compound page metadata when allocating
    the pages?
    -
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