Messages in this thread | | | Date | Mon, 2 Apr 2012 16:04:23 -0700 | From | Matt Helsley <> | Subject | Re: [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
| |