lkml.org 
[lkml]   [2011]   [Apr]   [21]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH v3] mm: make expand_downwards symmetrical to expand_upwards
On Thu, 21 Apr 2011, Christoph Lameter wrote:

> In 32 bit configurations some architectures (like x86) provide nodes
> that have only high memory. Slab allocators only handle normal memory.
> SLAB operates in a kind of degraded mode in that case by falling back for
> each allocation to the nodes that have normal memory.
>

Let's do this:

- parisc: James has already queued "parisc: set memory ranges in
N_NORMAL_MEMORY when onlined" for 2.6.39, so all he needs now is
to merge a hybrid of the Kconfig changes requiring CONFIG_NUMA for
CONFIG_DISCONTIGMEM from KOSAKI-san and myself which also fix the
compile issues,

- generic code: we pull check_for_regular_memory() out from under
CONFIG_HIGHMEM so that N_NORMAL_MEMORY gets set appropriately for
all callers of free_area_init_nodes() from paging_init(); this fixes
ia64 and mips,

- alpha, m32r, m68k: push the changes to those individual architectures
that I proposed earlier that set N_NORMAL_MEMORY for DISCONTINGMEM
when memory regions have memory; KOSAKI-san says a couple of these
architectures may be orphaned so hopefully Andrew can pick them up
in -mm.

I'll reply to this email with the parisc Kconfig changes for James, the
generic change to check_for_regular_memory() for Andrew, and the
arch-specific changes to the appropriate maintainers and email lists (but
may need to go through -mm if they aren't picked up).


\
 
 \ /
  Last update: 2011-04-21 23:23    [W:0.163 / U:0.048 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site