On Tue,  7 Jul 2015 13:03:41 -0400
Eric B Munson [off-list ref] wrote:

This patch introduces the ability to request that pages are not
pre-faulted, but are placed on the unevictable LRU when they are finally
faulted in.  This can be done area at a time via the
mlock2(MLOCK_ONFAULT) or the mlockall(MCL_ONFAULT) system calls.  These
calls can be undone via munlock2(MLOCK_ONFAULT) or
munlockall2(MCL_ONFAULT).

Quick, possibly dumb question: I've been beating my head against these for
a little bit, and I can't figure out what's supposed to happen in this
case:

	mlock2(addr, len, MLOCK_ONFAULT);
	munlock2(addr, len, MLOCK_LOCKED);

It looks to me like it will clear VM_LOCKED without actually unlocking any
pages.  Is that the intended result?

Thanks,

jon