Re: [PATCH v7 3/6] mm: Introduce VM_LOCKONFAULT

On Wed 19-08-15 17:33:45, Eric B Munson wrote: [...]

The group which asked for this feature here wants the ability to distinguish between LOCKED and LOCKONFAULT regions and without the VMA flag there isn't a way to do that.

Could you be more specific on why this is needed?

Do we know that these last two open flags are needed right now or is this speculation that they will be and that none of the other VMA flags can be reclaimed?

I do not think they are needed by anybody right now but that is not a reason why it should be used without a really strong justification. If the discoverability is really needed then fair enough but I haven't seen any justification for that yet.