linux/arch/powerpc/platforms
Johannes Weiner e97ca8e5b8 mm: fix GFP_THISNODE callers and clarify
GFP_THISNODE is for callers that implement their own clever fallback to
remote nodes.  It restricts the allocation to the specified node and
does not invoke reclaim, assuming that the caller will take care of it
when the fallback fails, e.g.  through a subsequent allocation request
without GFP_THISNODE set.

However, many current GFP_THISNODE users only want the node exclusive
aspect of the flag, without actually implementing their own fallback or
triggering reclaim if necessary.  This results in things like page
migration failing prematurely even when there is easily reclaimable
memory available, unless kswapd happens to be running already or a
concurrent allocation attempt triggers the necessary reclaim.

Convert all callsites that don't implement their own fallback strategy
to __GFP_THISNODE.  This restricts the allocation a single node too, but
at the same time allows the allocator to enter the slowpath, wake
kswapd, and invoke direct reclaim if necessary, to make the allocation
happen when memory is full.

Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Acked-by: Rik van Riel <riel@redhat.com>
Cc: Jan Stancek <jstancek@redhat.com>
Cc: Mel Gorman <mgorman@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-03-10 17:26:19 -07:00
..
8xx powerpc: Remove unused REDBOOT Kconfig parameter 2013-12-30 14:17:00 +11:00
40x Removal of GENERIC_GPIO for v3.10 2013-05-09 09:59:16 -07:00
44x i2c: move OF helpers into the core 2013-08-23 10:22:20 +02:00
52xx Merge remote-tracking branch 'agust/next' into next 2014-01-29 16:53:55 +11:00
82xx powerpc: add explicit OF includes 2013-10-09 20:04:11 -05:00
83xx powerpc: Delete non-required instances of include <linux/init.h> 2014-01-15 13:46:44 +11:00
85xx Merge remote-tracking branch 'scott/next' into next 2014-01-15 14:22:35 +11:00
86xx powerpc: add explicit OF includes 2013-10-09 20:04:11 -05:00
512x powerpc/512x: clk: support MPC5121/5123/5125 SoC variants 2014-01-12 18:59:36 +01:00
amigaone pcspkr: Cleanup Kconfig dependencies 2011-06-09 15:01:41 +02:00
cell mm: fix GFP_THISNODE callers and clarify 2014-03-10 17:26:19 -07:00
chrp powerpc: Delete non-required instances of include <linux/init.h> 2014-01-15 13:46:44 +11:00
embedded6xx Merge remote-tracking branch 'scott/next' into next 2014-01-15 14:22:35 +11:00
maple POWERPC: drivers: remove __dev* attributes. 2013-01-03 15:57:04 -08:00
pasemi powerpc: Delete non-required instances of include <linux/init.h> 2014-01-15 13:46:44 +11:00
powermac powerpc: Delete non-required instances of include <linux/init.h> 2014-01-15 13:46:44 +11:00
powernv powerpc/powernv: Fix indirect XSCOM unmangling 2014-02-28 19:15:49 +11:00
ps3 powerpc/ps3: Remove inline marking of EXPORT_SYMBOL functions 2013-12-02 14:06:53 +11:00
pseries powerpc/le: Ensure that the 'stop-self' RTAS token is handled correctly 2014-02-28 18:06:24 +11:00
wsp powerpc/iommu: Add it_page_shift field to determine iommu page size 2013-12-30 14:17:13 +11:00
fsl_uli1575.c of/irq: Refactor interrupt-map parsing 2013-10-24 11:43:04 +01:00
Kconfig powerpc: Better split CONFIG_PPC_INDIRECT_PIO and CONFIG_PPC_INDIRECT_MMIO 2013-08-14 14:57:50 +10:00
Kconfig.cputype powerpc/mm: Enable _PAGE_NUMA for book3s 2013-12-09 11:40:30 +11:00
Makefile powerpc: Remove the main legacy iSerie platform code 2012-03-09 10:35:11 +11:00