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Dmitry Fink c15bef3099 mmap: fix and tidy up overcommit page arithmetic 
- shmem pages are not immediately available, but they are not
  potentially available either, even if we swap them out, they will just
  relocate from memory into swap, total amount of immediate and
  potentially available memory is not going to be affected, so we
  shouldn't count them as potentially free in the first place.

- nr_free_pages() is not an expensive operation anymore, there is no
  need to split the decision making in two halves and repeat code.

Signed-off-by: Dmitry Fink <dmitry.fink@palm.com>
Reviewed-by: Minchan Kim <minchan.kim@gmail.com>
Acked-by: Hugh Dickins <hughd@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-07-25 20:57:09 -07:00
..
backing-dev.c
mm/backing-dev.c: reset bdi min_ratio in bdi_unregister()
2011-07-25 20:57:07 -07:00
bootmem.c
crash_dump: export is_kdump_kernel to modules, consolidate elfcorehdr_addr, setup_elfcorehdr and saved_max_pfn
2011-03-23 19:47:19 -07:00
bounce.c
bounce: call flush_dcache_page() after bounce_copy_vec()
2010-09-09 18:57:25 -07:00
cleancache.c
mm: cleancache core ops functions and config
2011-05-26 10:01:36 -06:00
compaction.c
mm: compaction: abort compaction if too many pages are isolated and caller is asynchronous V2
2011-06-15 20:04:02 -07:00
debug-pagealloc.c
…
dmapool.c
mm/dmapool.c: use TASK_UNINTERRUPTIBLE in dma_pool_alloc()
2011-01-13 17:32:48 -08:00
fadvise.c
readahead: introduce FMODE_RANDOM for POSIX_FADV_RANDOM
2010-03-06 11:26:25 -08:00
failslab.c
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
2010-03-30 22:02:32 +09:00
filemap_xip.c
mm: Convert i_mmap_lock to a mutex
2011-05-25 08:39:18 -07:00
filemap.c
fs: kill i_alloc_sem
2011-07-20 20:47:46 -04:00
fremap.c
mm: don't access vm_flags as 'int'
2011-05-26 09:20:31 -07:00
highmem.c
mm,x86: fix kmap_atomic_push vs ioremap_32.c
2010-10-27 18:03:05 -07:00
huge_memory.c
mm/huge_memory.c: minor lock simplification in __khugepaged_exit
2011-07-25 20:57:09 -07:00
hugetlb.c
mm: hugetlb: fix coding style issues
2011-07-25 20:57:09 -07:00
hwpoison-inject.c
Fix common misspellings
2011-03-31 11:26:23 -03:00
init-mm.c
mm: convert mm->cpu_vm_cpumask into cpumask_var_t
2011-05-25 08:39:21 -07:00
internal.h
mm: nommu: sort mm->mmap list properly
2011-05-25 08:39:05 -07:00
Kconfig
mm: cleancache core ops functions and config
2011-05-26 10:01:36 -06:00
Kconfig.debug
mm: debug-pagealloc: fix kconfig dependency warning
2011-03-22 17:44:02 -07:00
kmemcheck.c
kmemcheck: Fix build errors due to missing slab.h
2010-03-30 22:02:32 +09:00
kmemleak-test.c
kmemleak: remove memset by using kzalloc
2011-01-27 18:31:51 +00:00
kmemleak.c
kmemleak: Do not return a pointer to an object that kmemleak did not get
2011-05-19 17:35:28 +01:00
ksm.c
ksm: fix NULL pointer dereference in scan_get_next_rmap_item()
2011-06-15 20:04:02 -07:00
maccess.c
maccess,probe_kernel: Make write/read src const void *
2011-05-25 19:56:23 -04:00
madvise.c
fs: kill i_alloc_sem
2011-07-20 20:47:46 -04:00
Makefile
mm: cleancache core ops functions and config
2011-05-26 10:01:36 -06:00
memblock.c
mm/memblock.c: avoid abuse of RED_INACTIVE
2011-07-25 20:57:09 -07:00
memcontrol.c
memcg: fix numa scan information update to be triggered by memory event
2011-07-08 21:14:44 -07:00
memory_hotplug.c
mm: extend memory hotplug API to allow memory hotplug in virtual machines
2011-07-25 20:57:08 -07:00
memory-failure.c
mm/memory-failure.c: fix spinlock vs mutex order
2011-06-27 18:00:13 -07:00
memory.c
mm/memory.c: remove ZAP_BLOCK_SIZE
2011-07-25 20:57:09 -07:00
mempolicy.c
mm: proc: move show_numa_map() to fs/proc/task_mmu.c
2011-05-25 08:39:34 -07:00
mempool.c
mm: remove broken 'kzalloc' mempool
2009-09-22 07:17:35 -07:00
migrate.c
migrate: don't account swapcache as shmem
2011-06-16 15:01:24 -07:00
mincore.c
thp: mincore transparent hugepage support
2011-01-13 17:32:44 -08:00
mlock.c
mm: don't access vm_flags as 'int'
2011-05-26 09:20:31 -07:00
mm_init.c
…
mmap.c
mmap: fix and tidy up overcommit page arithmetic
2011-07-25 20:57:09 -07:00
mmu_context.c
exit: fix oops in sync_mm_rss
2010-03-24 16:31:21 -07:00
mmu_notifier.c
thp: mmu_notifier_test_young
2011-01-13 17:32:46 -08:00
mmzone.c
mm: page allocator: adjust the per-cpu counter threshold when memory is low
2011-01-13 17:32:31 -08:00
mprotect.c
thp: mprotect: transparent huge page support
2011-01-13 17:32:44 -08:00
mremap.c
mm: Convert i_mmap_lock to a mutex
2011-05-25 08:39:18 -07:00
msync.c
sanitize vfs_fsync calling conventions
2010-05-21 18:31:21 -04:00
nobootmem.c
memblock/nobootmem: remove unneeded code from alloc_bootmem_node_high()
2011-05-25 08:39:31 -07:00
nommu.c
mmap: fix and tidy up overcommit page arithmetic
2011-07-25 20:57:09 -07:00
oom_kill.c
oom: remove references to old badness() function
2011-07-25 20:57:09 -07:00
page_alloc.c
x86, numa: Implement pfn -> nid mapping granularity check
2011-07-12 21:58:29 -07:00
page_cgroup.c
mm/page_cgroup.c: simplify code by using SECTION_ALIGN_UP() and SECTION_ALIGN_DOWN() macros
2011-07-25 20:57:09 -07:00
page_io.c
block: kill off REQ_UNPLUG
2011-03-10 08:52:27 +01:00
page_isolation.c
mm: page_isolation: codeclean fix comment and rm unneeded val init
2010-10-26 16:52:11 -07:00
page-writeback.c
Merge branch 'for-2.6.39/core' of git://git.kernel.dk/linux-2.6-block
2011-03-24 10:16:26 -07:00
pagewalk.c
pagewalk: fix code comment for THP
2011-07-25 20:57:09 -07:00
percpu-km.c
percpu: clear memory allocated with the km allocator
2010-10-02 10:28:42 +03:00
percpu-vm.c
mm: remove gfp mask from pcpu_get_vm_areas
2011-01-13 17:32:34 -08:00
percpu.c
Merge branch 'for-2.6.40' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu
2011-05-24 11:53:42 -07:00
pgtable-generic.c
mm/pgtable-generic.c: fix CONFIG_SWAP=n build
2011-01-26 10:49:58 +10:00
prio_tree.c
sanitize <linux/prefetch.h> usage
2011-05-20 12:50:29 -07:00
quicklist.c
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
2010-03-30 22:02:32 +09:00
readahead.c
readahead: readahead page allocations are OK to fail
2011-05-25 08:39:25 -07:00
rmap.c
[S390] reference bit testing for unmapped pages
2011-07-24 10:48:00 +02:00
shmem.c
tmpfs: add shmem_read_mapping_page_gfp
2011-06-27 18:00:12 -07:00
slab.c
Merge branch 'slab-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/penberg/slab-2.6
2011-07-22 12:44:30 -07:00
slob.c
slob/lockdep: Fix gfp flags passed to lockdep
2011-06-07 21:38:07 +03:00
slub.c
Merge branch 'slab-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/penberg/slab-2.6
2011-07-22 12:44:30 -07:00
sparse-vmemmap.c
tree-wide: fix comment/printk typos
2010-11-01 15:38:34 -04:00
sparse.c
mm: make some struct page's const
2011-07-25 20:57:07 -07:00
swap_state.c
block: remove per-queue plugging
2011-03-10 08:52:07 +01:00
swap.c
mm: batch activate_page() to reduce lock contention
2011-05-25 08:39:37 -07:00
swapfile.c
fs: seq_file - add event counter to simplify poll() support
2011-07-20 20:47:50 -04:00
thrash.c
mm: swap-token: add a comment for priority aging
2011-07-25 20:57:08 -07:00
truncate.c
fs: kill i_alloc_sem
2011-07-20 20:47:46 -04:00
util.c
mm: nommu: sort mm->mmap list properly
2011-05-25 08:39:05 -07:00
vmalloc.c
vmalloc,rcu: Convert call_rcu(rcu_free_vb) to kfree_rcu()
2011-07-20 14:10:18 -07:00
vmscan.c
vmscan: add customisable shrinker batch size
2011-07-20 01:44:32 -04:00
vmstat.c
mm, mem-hotplug: update pcp->stat_threshold when memory hotplug occur
2011-05-25 08:39:09 -07:00