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authorBalbir Singh <balbir@linux.vnet.ibm.com>2008-02-07 00:14:02 -0800
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2008-02-07 08:42:19 -0800
commite1a1cd590e3fcb0d2e230128daf2337ea55387dc (patch)
treeeb660ab340c657a1eb595b2d4d8e8b62783bf6fb /include/linux/swap.h
parentbed7161a519a2faef53e1bce1b47595e297c1d14 (diff)
Memory controller: make charging gfp mask aware
Nick Piggin pointed out that swap cache and page cache addition routines could be called from non GFP_KERNEL contexts. This patch makes the charging routine aware of the gfp context. Charging might fail if the cgroup is over it's limit, in which case a suitable error is returned. This patch was tested on a Powerpc box. I am still looking at being able to test the path, through which allocations happen in non GFP_KERNEL contexts. [kamezawa.hiroyu@jp.fujitsu.com: problem with ZONE_MOVABLE] Signed-off-by: Balbir Singh <balbir@linux.vnet.ibm.com> Cc: Pavel Emelianov <xemul@openvz.org> Cc: Paul Menage <menage@google.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Cc: Nick Piggin <nickpiggin@yahoo.com.au> Cc: Kirill Korotaev <dev@sw.ru> Cc: Herbert Poetzl <herbert@13thfloor.at> Cc: David Rientjes <rientjes@google.com> Cc: Vaidyanathan Srinivasan <svaidy@linux.vnet.ibm.com> Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/linux/swap.h')
-rw-r--r--include/linux/swap.h3
1 files changed, 2 insertions, 1 deletions
diff --git a/include/linux/swap.h b/include/linux/swap.h
index 4d91bc0e0fd5..3ca5c4bd6d3f 100644
--- a/include/linux/swap.h
+++ b/include/linux/swap.h
@@ -183,7 +183,8 @@ extern void swap_setup(void);
/* linux/mm/vmscan.c */
extern unsigned long try_to_free_pages(struct zone **zones, int order,
gfp_t gfp_mask);
-extern unsigned long try_to_free_mem_cgroup_pages(struct mem_cgroup *mem);
+extern unsigned long try_to_free_mem_cgroup_pages(struct mem_cgroup *mem,
+ gfp_t gfp_mask);
extern int __isolate_lru_page(struct page *page, int mode);
extern unsigned long shrink_all_memory(unsigned long nr_pages);
extern int vm_swappiness;