Hugh Dickins 407f9c8b08 ksm: mem cgroup charge swapin copy ... But ksm swapping does require one small change in mem cgroup handling. When do_swap_page()'s call to ksm_might_need_to_copy() does indeed substitute a duplicate page to accommodate a different anon_vma (or a the !PageSwapCache check in mem_cgroup_try_charge_swapin(). That was returning success without charging, on the assumption that pte_same() would fail after, which is not the case here. Originally I proposed that success, so that an unshrinkable mem cgroup at its limit would not fail unnecessarily; but that's a minor point, and there are plenty of other places where we may fail an overallocation which might later prove unnecessary. So just go ahead and do what all the other exceptions do: proceed to charge current mm. Signed-off-by: Hugh Dickins <hugh.dickins@tiscali.co.uk> Cc: Izik Eidus <ieidus@redhat.com> Cc: Andrea Arcangeli <aarcange@redhat.com> Cc: Chris Wright <chrisw@redhat.com> Acked-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Acked-by: Balbir Singh <balbir@linux.vnet.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2009-12-15 08:53:19 -08:00
..
backing-dev.c	flusher: Fix PF_FROZEN race	2009-12-03 13:49:43 +01:00
bootmem.c	bootmem: Add free_bootmem_late()	2009-11-10 12:31:43 +01:00
bounce.c	block: remove some includings of blktrace_api.h	2009-06-16 11:19:36 +02:00
debug-pagealloc.c	generic debug pagealloc	2009-04-01 08:59:13 -07:00
dmapool.c	dmapools: protect page_list walk in show_pools()	2009-06-30 18:56:00 -07:00
fadvise.c	readahead: move max_sane_readahead() calls into force_page_cache_readahead()	2009-06-16 19:47:28 -07:00
failslab.c	kmemtrace, mm: fix slab.h dependency problem in mm/failslab.c	2009-04-03 12:23:01 +02:00
filemap.c	kill wait_on_page_writeback_range	2009-12-10 15:02:50 +01:00
filemap_xip.c	const: mark struct vm_struct_operations	2009-09-27 11:39:25 -07:00
fremap.c
highmem.c	highmem: Fix debug_kmap_atomic() to also handle KM_IRQ_PTE, KM_NMI, and KM_NMI_PTE	2009-11-10 04:15:47 +01:00
hugetlb.c	mm: add gfp flags for NODEMASK_ALLOC slab allocations	2009-12-15 08:53:13 -08:00
hwpoison-inject.c	HWPOISON: Add simple debugfs interface to inject hwpoison on arbitary PFNs	2009-09-16 11:50:17 +02:00
init-mm.c	mm: consolidate init_mm definition	2009-06-16 19:47:28 -07:00
internal.h	ksm: fix mlockfreed to munlocked	2009-12-15 08:53:19 -08:00
Kconfig	mm: stop ptlock enlarging struct page	2009-12-15 08:53:17 -08:00
Kconfig.debug	trivial: improve help text for mm debug config options	2009-09-21 15:14:57 +02:00
kmemcheck.c	kmemcheck: add hooks for the page allocator	2009-06-15 15:48:33 +02:00
kmemleak-test.c	percpu: clean up percpu variable definitions	2009-06-24 15:13:48 +09:00
kmemleak.c	tree-wide: fix typos "aquire" -> "acquire", "cumsumed" -> "consumed"	2009-11-09 09:40:57 +01:00
ksm.c	ksm: share anon page without allocating	2009-12-15 08:53:19 -08:00
maccess.c	[S390] maccess: add weak attribute to probe_kernel_write	2009-06-12 10:27:37 +02:00
madvise.c	Merge branch 'hwpoison' of git://git.kernel.org/pub/scm/linux/kernel/git/ak/linux-mce-2.6	2009-09-24 07:53:22 -07:00
Makefile	percpu: kill legacy percpu allocator	2009-10-02 13:29:29 +09:00
memcontrol.c	ksm: mem cgroup charge swapin copy	2009-12-15 08:53:19 -08:00
memory-failure.c	mm: CONFIG_MMU for PG_mlocked	2009-12-15 08:53:17 -08:00
memory.c	ksm: let shared pages be swappable	2009-12-15 08:53:19 -08:00
memory_hotplug.c	mm: clear node in N_HIGH_MEMORY and stop kswapd when all memory is offlined	2009-12-15 08:53:13 -08:00
mempolicy.c	hugetlb: derive huge pages nodes allowed from task mempolicy	2009-12-15 08:53:12 -08:00
mempool.c	mm: remove broken 'kzalloc' mempool	2009-09-22 07:17:35 -07:00
migrate.c	mm: define PAGE_MAPPING_FLAGS	2009-12-15 08:53:17 -08:00
mincore.c
mlock.c	ksm: fix mlockfreed to munlocked	2009-12-15 08:53:19 -08:00
mm_init.c
mmap.c	mmap: don't return ENOMEM when mapcount is temporarily exceeded in munmap()	2009-12-15 08:53:11 -08:00
mmu_context.c	mm: reduce atomic use on use_mm fast path	2009-09-22 07:17:42 -07:00
mmu_notifier.c	ksm: add mmu_notifier set_pte_at_notify()	2009-09-22 07:17:31 -07:00
mmzone.c	[ARM] Double check memmap is actually valid with a memmap has unexpected holes V2	2009-05-18 11:22:24 +01:00
mprotect.c	perf: Do the big rename: Performance Counters -> Performance Events	2009-09-21 14:28:04 +02:00
mremap.c	Take arch_mmap_check() into get_unmapped_area()	2009-12-11 06:44:58 -05:00
msync.c
nommu.c	NOMMU: Don't pass NULL pointers to fput() in do_mmap_pgoff()	2009-10-31 12:11:37 -07:00
oom_kill.c	oom: dump stack and VM state when oom killer panics	2009-12-15 08:53:10 -08:00
page-writeback.c	writeback: remove unused nonblocking and congestion checks	2009-12-03 13:54:25 +01:00
page_alloc.c	mm: CONFIG_MMU for PG_mlocked	2009-12-15 08:53:17 -08:00
page_cgroup.c	memory hotplug: alloc page from other node in memory online	2009-09-22 07:17:26 -07:00
page_io.c	swap: rework map_swap_page() again	2009-12-15 08:53:16 -08:00
page_isolation.c
pagewalk.c
percpu.c	Merge branch 'for-linus' into for-next	2009-12-08 10:02:12 +09:00
prio_tree.c
quicklist.c	cpumask: use new-style cpumask ops in mm/quicklist.	2009-09-24 09:34:52 +09:30
readahead.c	readahead: introduce context readahead algorithm	2009-06-16 19:47:30 -07:00
rmap.c	ksm: share anon page without allocating	2009-12-15 08:53:19 -08:00
shmem.c	swap_info: note SWAP_MAP_SHMEM	2009-12-15 08:53:16 -08:00
shmem_acl.c	shmfs: use 'check_acl' instead of 'permission'	2009-09-08 11:08:46 -07:00
slab.c	Merge branch 'perf-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip	2009-12-14 10:13:22 -08:00
slob.c	slab: remove duplicate kmem_cache_init_late() declarations	2009-08-06 11:36:25 +03:00
slub.c	Merge branch 'perf-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip	2009-12-14 10:13:22 -08:00
sparse-vmemmap.c	memory hotplug: alloc page from other node in memory online	2009-09-22 07:17:26 -07:00
sparse.c	memory hotplug: alloc page from other node in memory online	2009-09-22 07:17:26 -07:00
swap.c	mm: replace various uses of num_physpages by totalram_pages	2009-09-22 07:17:38 -07:00
swap_state.c	mm: add_to_swap_cache() does not return -EEXIST	2009-09-22 07:17:35 -07:00
swapfile.c	ksm: let shared pages be swappable	2009-12-15 08:53:19 -08:00
thrash.c	mm: pass mm to grab_swap_token	2009-06-23 12:50:05 -07:00
truncate.c	mm: fix comments for invalidate_inode_pages2()	2009-12-04 15:39:48 +01:00
util.c	fix a struct file leak in do_mmap_pgoff()	2009-12-11 06:44:57 -05:00
vmalloc.c	vmalloc(): adjust gfp mask passed on nested vmalloc() invocation	2009-12-15 08:53:13 -08:00
vmscan.c	vmscan: make consistent of reclaim bale out between do_try_to_free_page and shrink_zone	2009-12-15 08:53:18 -08:00
vmstat.c	vmscan: stop kswapd waiting on congestion when the min watermark is not being met	2009-12-15 08:53:16 -08:00