On Wed, 4 Apr 2007, Andrea Arcangeli wrote: > On Wed, Apr 04, 2007 at 01:45:06PM +0100, Hugh Dickins wrote: > > I'm confused. CONFIG_ZERO_PAGE off is where we'd like to end up: how > > would turning CONFIG_ZERO_PAGE on in -rc kernels help us to get there? > > He most certainly meant on by default.
Okay, I thought it more diplomatic to label myself as the confused one ;) > > I think if we do this, we also need a zeropage counter in the vm stats > so that we'll get a measure of the waste and it'll be possible to > identify apps to optimize/fix. That's a little unfortunate, since we'd then have to lose the win from this change, that we issue a writable zeroed page (when VM_WRITE) in do_anonymous_page, even when it's a read fault, saving subsequent fault. Wouldn't we? Or am I confused ;? Hugh - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
