Messages in this thread | | | Date | Thu, 4 Jun 2009 14:30:33 -0700 | From | Matt Helsley <> | Subject | Re: [PATCH 1/9] exec_path 1/9: introduce ->exec_path and switch /proc/*/exe |
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On Thu, Jun 04, 2009 at 08:07:23AM -0700, Linus Torvalds wrote: > > > On Thu, 4 Jun 2009, Matt Helsley wrote: > > > > Doesn't this pin the vfs mount of the executable for the lifetime of > > the task? > > Well, yes, but so does the current code.
Not quite. The current code pins it as long as the corresponding VMAs are mapped -- not for the lifetime of the task.
> Sure, in _theory_ it can be a non-mmap executable (maybe people still have > those old OMAGIC a.out executables), and in _theory_ you could unmap the > executable even if it was originally mmap'ed, but neither of those is > exactly common, are they?
Not common to my knowledge, no.
> > So in practice, nothing has changed wrt lifetime of the executable.
Almost all of the time, yes.
Cheers, -Matt Helsley
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