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    SubjectRe: Deadlock on the mm->mmap_sem
    Date
    > > IMHO modifying proc_pid_read_maps() is far simpler - I'm not aware
    of
    > > another recursive mmap_sem user.
    >
    > if that's the very only place that could be a viable option but OTOH I
    > like to be allowed to use recursion on the read locks as with the
    > spinlocks.

    But shouldn't that change wait until 2.5? Especially since another huge
    mm change was just merged?
    proc_pid_read_maps contains further bugs - afaics it it could skip lines
    if PAGE_SIZE > 4096 and a file path is nearly 4096 bytes long.
    I'll post a patch to proc_pid_read_maps - modifying the rw semaphore
    behaviour just asks for trouble.

    --
    Manfred

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