On Tue, Jun 28, 2005 at 11:42:16AM +1000, Nick Piggin wrote:
Well it switches between page and swap cache, but it seems to just
use the normal pagecache / swapcache functions for that. It could be
that I've got a big hole somewhere, but so far I don't think you've
pointed oen out.
Its radix tree movement bypasses the page allocator.
On Tue, Jun 28, 2005 at 11:42:16AM +1000, Nick Piggin wrote:
Well what's the trouble with it?
hugetlb reallocation doesn't go through the page allocator either.
On Tue, Jun 28, 2005 at 11:42:16AM +1000, Nick Piggin wrote:
I know what a memory barrier is and does, so you said the
necessary memory barriers aren't in place, so can you deal
with it?
spin_unlock() does not imply a memory barrier.
William Lee Irwin III wrote:
The above is as much as I wanted to go into it. I need to direct my
capacity for the grunt work of devising adversary arguments elsewhere.
On Tue, Jun 28, 2005 at 11:42:16AM +1000, Nick Piggin wrote:
I don't think there is anything wrong with it. I would be very
keen to see real adversary arguments elsewhere though.
They take time to construct.
William Lee Irwin III wrote:
You requested comments. I made some.
On Tue, Jun 28, 2005 at 11:42:16AM +1000, Nick Piggin wrote:
Well yeah thanks, you did point out a thinko I made, and that was very
helpful and I value any time you spend looking at it. But just saying
"this is wrong, that won't work, that's crap, ergo the concept is
useless" without finding anything specifically wrong is not very
constructive.
I said nothing of that kind, and I did point out specific things.