KOSAKI Motohiro 6c6d528043 pagewalk: don't look up vma if walk->hugetlb_entry is unused ...

Currently, walk_page_range() calls find_vma() every page table for walk
iteration.  but it's completely unnecessary if walk->hugetlb_entry is
unused.  And we don't have to assume find_vma() is a lightweight
operation.  So this patch checks the walk->hugetlb_entry and avoids the
find_vma() call if possible.

This patch also makes some cleanups.  1) remove ugly uninitialized_var()
and 2) #ifdef in function body.

Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Cc: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Cc: Hiroyuki Kamezawa <kamezawa.hiroyuki@gmail.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Matt Mackall <mpm@selenic.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

2011-07-25 20:57:08 -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

generic debug pagealloc

2009-04-01 08:59:13 -07:00

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: remove khugepaged double thp vmstat update with CONFIG_NUMA=n

2011-06-15 20:03:58 -07:00

hugetlb.c

hugetlb: add phys addr to struct huge_bootmem_page

2011-07-25 20:57:07 -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: properly handle overlaps and fix error path

2011-03-22 17:44:09 -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: __tlb_remove_page() check the correct batch

2011-07-08 21:14:43 -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

mm: mminit_loglevel cannot be __meminitdata anymore

2008-08-20 15:40:30 -07:00

mmap.c

mm: get rid of the most spurious find_vma_prev() users

2011-06-16 00:35:09 -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

Merge branch 'ptrace' of git://git.kernel.org/pub/scm/linux/kernel/git/oleg/misc

2011-07-22 15:06:50 -07:00

oom_kill.c

ptrace: kill task_ptrace()

2011-06-22 19:26:27 +02:00

page_alloc.c

x86, numa: Implement pfn -> nid mapping granularity check

2011-07-12 21:58:29 -07:00

page_cgroup.c

memcg: fix init_page_cgroup nid with sparsemem

2011-06-15 20:04:01 -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: don't look up vma if walk->hugetlb_entry is unused

2011-07-25 20:57:08 -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