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    SubjectRe: [PATCH 5/5] x86,mm: make pagefault killable
    On Wed, Mar 23, 2011 at 1:09 AM, KOSAKI Motohiro
    <> wrote:
    > When __lock_page_or_retry() return 0, It call up_read(mmap_sem) in this
    > function.


    > I agree this is strange (or ugly). but I don't want change this spec in
    > this time.

    I agree that it is strange, and I don't like functions that touch
    locks that they didn't take themselves, but since the original point
    of the whole thing was to wait for the page without holding the
    mmap_sem lock, that function has to do the up_read() early.


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      Last update: 2011-03-23 15:37    [W:0.019 / U:10.068 seconds]
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