[PATCH][RFC] simpler __alloc_pages{_limit}

From: Roger Larsson (roger.larsson@norran.net)
Date: Fri Aug 24 2001 - 19:48:28 EST

Hi again,

[two typos corrected from the version at linux-mm]

I read through __alloc_pages again and found out that allocs with order > 0
are not treated nicely.

To begin with if order > 0 then direct_reclaim will be false even if it is
allowed to wait...

This version allows "direct_reclaim" with order > 0 !

How?

Like we finally end up doing anyway...
reclaiming pages and freeing.

While adding this I thought why not always do it like this,
even with order == 0?
since it will allow for merging of pages to higher orders.
Before returning a page that was not mergeable...

Doing this - the code started to collaps...
__alloc_pages_limit could suddenly handle all special cases!
(with small functional differences)

Comments?

/RogerL 

-- 
Roger Larsson
Skellefteċ
Sweden
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This archive was generated by hypermail 2b29 : Fri Aug 31 2001 - 21:00:16 EST