Re: Regression: Requiring CAP_SYS_ADMIN for /proc/<pid>/pagemap causes application-level breakage

[Kirill A. Shutemov]

On Wed, Apr 29, 2015 at 02:02:01PM -0700, Linus Torvalds wrote:
> On Wed, Apr 29, 2015 at 1:44 PM, Konstantin Khlebnikov <koct9i@xxxxxxxxx> wrote:
> >
> > This's no longer true. After recent fixes for "anon_vma endless growing" new vma
> > might reuse old anon_vma from grandparent vma.
> 
> Oh well. I guess that was too simple.
> 
> If Mark is ok with the rule that "it's not reliably if you have two
> nested forks" (ie it only works if you exec for every fork you do), it
> should still work, right? It sounds like Mark doesn't necessarily need
> to handle the *generic* case.

This sounds too ugly to be exposed it as ABI.

-- 
 Kirill A. Shutemov
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/