when to mark reserved low memory pages

[John Rose]

Hi Linda-

You might consider posting your patch to the external list, in response
to ben's note here, like you did in the bug text.  I haven't had much
luck getting responses from Paul or Anton lately :(

Just a thought..

Thanks-
John


On Mon, 2004-09-27 at 17:27, Benjamin Herrenschmidt wrote:
> On Tue, 2004-09-28 at 01:11, John Rose wrote:
> > On Fri, 2004-09-24 at 21:15, Benjamin Herrenschmidt wrote:
> > > Why ? because they get freed when you mmap them and later quit the
> > > userland process ? In this case, the option of marking them reserved
> > > might lead to an ever increasing page count (or not), make very sure
> > > of that, as get_page() will increase count but free_page() will not
> > > decrease it for a reserved page.
> > 
> > Ok retry :)  If you were in a hypothetical situation where page count
> > wasn't the issue, and you specifically needed the pages marked reserved,
> > where would you do it?
> 
> Some time right after mem_init() I suppose...
> 
> > And how to handle the discontig case?
> 
> Not too sure
> 
> Ben.
> 
> 
>