[lkml]   [2009]   [Jun]   [9]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
    SubjectRe: [PATCH 0/23] File descriptor hot-unplug support v2
    Linus Torvalds <> writes:

    > On Mon, 8 Jun 2009, Al Viro wrote:
    >> Sure, even though I'm not at all certain that copy_from_user() is that easy.
    >> We can make locking current->mm in there interruptible, all right, but that's
    >> only a part of the answer - even aside of the allocations, we'd need vma
    >> ->fault() interruptible as well, which leads to interruptible instances of
    >> ->readpage(), with all the fun _that_ would be.
    > We already have all that - the NFS people wanted it.
    > More importantly, you don't actually need to interrupt readpage itself -
    > you just need to stop _waiting_ on it. So in your fault handler, just stop
    > waiting, and instead just return FAULT_RETRY or whatever.

    That sounds doable. Has that code been merged yet?

    I took a quick look and it didn't see anyone breaking out of page fault with a
    signal or code to really handle that.


     \ /
      Last update: 2009-06-09 08:47    [W:0.023 / U:58.916 seconds]
    ©2003-2016 Jasper Spaans. hosted at Digital OceanAdvertise on this site