Re: [BUG][PATCH] 2.4.* mlockall(MCL_FUTURE) is broken -- child inherits

[Bruce Blinn]

Andrew Morton wrote:
> 
> Dave Anderson wrote:
> >
> > In 2.4.*, mlockall(MCL_FUTURE) is erroneously inherited by child processes
> > across fork() and exec():
> 
> The Linux manpage says that it is not inherited across either.
> 
> However SUS says that it is not inherited across exec, and
> doesn't mention fork() at all.
> http://www.opengroup.org/onlinepubs/007908799/xsh/mlockall.html
> 
> So...  Shouldn't we be clearing it in the exec() path?
> 

But, the SUS documentation for fork() says that it does not inherit the
memory locks of the parent.  It explicitly mentions mlockall().

	http://www.opengroup.org/onlinepubs/007908799/xsh/fork.html