Re: [PATCH v6] add MAP_UNLOCKED mmap flag

[Gleb Natapov]

On Mon, Jan 18, 2010 at 02:32:32PM +0000, Alan Cox wrote:
> > this kind of control. As of use of mlockall(MCL_FUTURE) how can I make
> > sure that all memory allocated behind my application's back (by dynamic
> > linker, libraries, stack) will be locked otherwise?
> 
> If you add this flag you can't do that anyway - some library will
> helpfully start up using it and then you are completely stuffed or will
> be back in two or three years adding MLOCKALL_ALWAYS.
> 
Libraries can do many other bad things. They can do mlockall(0) today
too and this is not the reason to ditch mlockall(). I don't expect libc will
do that though.

--
			Gleb.
--
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/