Matthew Wilcox wrote:
On Fri, Dec 14, 2007 at 05:42:37PM +0000, Mel Gorman wrote:
Regrettably this interferes with anti-fragmentation because the "next" page
on the list on return from rmqueue_bulk is not guaranteed to be of the right
mobility type. I fixed it as an additional patch but it adds additional cost
that should not be necessary and it's visible in microbenchmark results on
at least one machine.
Is this patch to be preferred to the one Andrew Morton posted to do
list_for_each_entry_reverse?
..
This patch replaces my earlier patch that Andrew has:
- list_add(&page->lru, list);
+ list_add_tail(&page->lru, list);
Which, in turn, replaced the even-earlier list_for_each_entry_reverse patch.
-ml
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