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    SubjectRe: [PATCH 6/7] mm: kill vma flag VM_EXECUTABLE
    On Sat, Mar 31, 2012 at 10:13:24PM +0200, Oleg Nesterov wrote:
    > On 03/31, Konstantin Khlebnikov wrote:
    > >
    > > comment from v2.6.25-6245-g925d1c4 ("procfs task exe symlink"),
    > > where all this stuff was introduced:
    > >
    > > > ...
    > > > This avoids pinning the mounted filesystem.
    > >
    > > So, this logic is hooked into every file mmap/unmmap and vma split/merge just to
    > > fix some hypothetical pinning fs from umounting by mm which already unmapped all
    > > its executable files, but still alive. Does anyone know any real world example?
    >
    > This is the question to Matt.

    This is where I got the scenario:

    https://lkml.org/lkml/2007/7/12/398

    Cheers,
    -Matt Helsley

    PS: I seem to keep coming back to this so I hope folks don't mind if I leave
    some more references to make (re)searching this topic easier:

    Thread with Cyrill Gorcunov discussing c/r of symlink:
    https://lkml.org/lkml/2012/3/16/448

    Thread with Oleg Nesterov re: cleanups:
    https://lkml.org/lkml/2012/3/5/240

    Thread with Alexey Dobriyan re: cleanups:
    https://lkml.org/lkml/2009/6/4/625

    mainline commit 925d1c401fa6cfd0df5d2e37da8981494ccdec07
    Date: Tue Apr 29 01:01:36 2008 -0700

    procfs task exe symlink



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