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    SubjectRe: [PATCH 13/12] ksm: fix munlock during exit_mmap deadlock
    On Wed, Aug 26, 2009 at 08:57:27PM +0100, Hugh Dickins wrote:
    > that might be useful. But KSM_RUN_UNMERGE wouldn't be able to use_mm
    > since it's coming from a normal user process - perhaps it should be a
    > kill-me-first like swapoff via PF_SWAPOFF.

    That would sound just perfect if only there wasn't also a break_cow in
    the kksmd context that will trigger page allocation as it can't
    takeover the KSM page like it would normally be guaranteed to do for a
    cow on a regular anon page mapped readonly in the pte after read
    swapin for example. Still for the echo 2 kill me first definitely
    makes sense, so maybe we should differentiate the two cases (kksmd and

     \ /
      Last update: 2009-08-26 22:33    [W:0.028 / U:113.964 seconds]
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