Naoya Horiguchi fafaa4264e pagewalk: improve vma handling ... Current implementation of page table walker has a fundamental problem in vma handling, which started when we tried to handle vma(VM_HUGETLB). Because it's done in pgd loop, considering vma boundary makes code complicated and bug-prone. From the users viewpoint, some user checks some vma-related condition to determine whether the user really does page walk over the vma. In order to solve these, this patch moves vma check outside pgd loop and introduce a new callback ->test_walk(). Signed-off-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com> Acked-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com> Cc: Andrea Arcangeli <aarcange@redhat.com> Cc: Cyrill Gorcunov <gorcunov@openvz.org> Cc: Dave Hansen <dave.hansen@intel.com> Cc: Pavel Emelyanov <xemul@parallels.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2015-02-11 17:06:05 -08:00
..
backing-dev.c
balloon_compaction.c
bootmem.c
cleancache.c	mm: fix cleancache debugfs directory path	2015-01-20 14:08:31 +01:00
cma.c	mm: cma: fix totalcma_pages to include DT defined CMA regions	2015-02-11 17:06:03 -08:00
compaction.c	mm/compaction: add tracepoint to observe behaviour of compaction defer	2015-02-11 17:06:04 -08:00
debug-pagealloc.c	mm/debug-pagealloc: make debug-pagealloc boottime configurable	2014-12-13 12:42:48 -08:00
debug.c	mm: account pmd page tables to the process	2015-02-11 17:06:04 -08:00
dmapool.c
early_ioremap.c
fadvise.c	mm: fadvise: document the fadvise(FADV_DONTNEED) behaviour for partial pages	2014-12-13 12:42:49 -08:00
failslab.c
filemap.c	mm: drop vm_ops->remap_pages and generic_file_remap_pages() stub	2015-02-10 14:30:30 -08:00
filemap_xip.c	mm: drop vm_ops->remap_pages and generic_file_remap_pages() stub	2015-02-10 14:30:30 -08:00
frontswap.c
gup.c	mm: gup: use get_user_pages_unlocked within get_user_pages_fast	2015-02-11 17:06:05 -08:00
highmem.c
huge_memory.c	mm/thp: allocate transparent hugepages on local node	2015-02-11 17:06:04 -08:00
hugetlb.c	mm: account pmd page tables to the process	2015-02-11 17:06:04 -08:00
hugetlb_cgroup.c	mm: page_counter: pull "-1" handling out of page_counter_memparse()	2015-02-11 17:06:02 -08:00
hwpoison-inject.c
init-mm.c
internal.h	mm: reduce try_to_compact_pages parameters	2015-02-11 17:06:02 -08:00
interval_tree.c	mm: replace vma->sharead.linear with vma->shared	2015-02-10 14:30:31 -08:00
iov_iter.c
Kconfig	rcu: Make SRCU optional by using CONFIG_SRCU	2015-01-06 11:04:29 -08:00
Kconfig.debug	mm/debug_pagealloc: remove obsolete Kconfig options	2015-01-08 15:10:52 -08:00
kmemcheck.c
kmemleak-test.c
kmemleak.c
ksm.c	mm: remove rest usage of VM_NONLINEAR and pte_file()	2015-02-10 14:30:31 -08:00
list_lru.c
maccess.c
madvise.c	mm: remove rest usage of VM_NONLINEAR and pte_file()	2015-02-10 14:30:31 -08:00
Makefile	mm: replace remap_file_pages() syscall with emulation	2015-02-10 14:30:30 -08:00
memblock.c	mm/memblock.c: refactor functions to set/clear MEMBLOCK_HOTPLUG	2014-12-13 12:42:46 -08:00
memcontrol.c	mm: memcontrol: consolidate swap controller code	2015-02-11 17:06:03 -08:00
memory-failure.c	mm: vmscan: invoke slab shrinkers from shrink_zone()	2014-12-13 12:42:48 -08:00
memory.c	mm: account pmd page tables to the process	2015-02-11 17:06:04 -08:00
memory_hotplug.c
mempolicy.c	mm/mempolicy.c: merge alloc_hugepage_vma to alloc_pages_vma	2015-02-11 17:06:04 -08:00
mempool.c
migrate.c	mm/hugetlb: take page table lock in follow_huge_pmd()	2015-02-11 17:06:01 -08:00
mincore.c	mm: remove rest usage of VM_NONLINEAR and pte_file()	2015-02-10 14:30:31 -08:00
mlock.c
mm_init.c
mmap.c	mm: fix false-positive warning on exit due mm_nr_pmds(mm)	2015-02-11 17:06:04 -08:00
mmu_context.c
mmu_notifier.c
mmzone.c	mm: microoptimize zonelist operations	2015-02-11 17:06:02 -08:00
mprotect.c	mm: remove rest usage of VM_NONLINEAR and pte_file()	2015-02-10 14:30:31 -08:00
mremap.c	mm: remove rest usage of VM_NONLINEAR and pte_file()	2015-02-10 14:30:31 -08:00
msync.c	mm: remove rest usage of VM_NONLINEAR and pte_file()	2015-02-10 14:30:31 -08:00
nobootmem.c
nommu.c	mm: gup: add __get_user_pages_unlocked to customize gup_flags	2015-02-11 17:06:05 -08:00
oom_kill.c	mm: account pmd page tables to the process	2015-02-11 17:06:04 -08:00
page-writeback.c	page_writeback: put account_page_redirty() after set_page_dirty()	2015-02-11 17:06:04 -08:00
page_alloc.c	oom, PM: make OOM detection in the freezer path raceless	2015-02-11 17:06:03 -08:00
page_counter.c	mm: page_counter: pull "-1" handling out of page_counter_memparse()	2015-02-11 17:06:02 -08:00
page_ext.c	mm/page_owner: keep track of page owners	2014-12-13 12:42:48 -08:00
page_io.c
page_isolation.c
page_owner.c	mm/page_owner: correct owner information for early allocated pages	2014-12-13 12:42:48 -08:00
pagewalk.c	pagewalk: improve vma handling	2015-02-11 17:06:05 -08:00
percpu-km.c
percpu-vm.c
percpu.c
pgtable-generic.c
process_vm_access.c	mm: gup: use get_user_pages_unlocked	2015-02-11 17:06:05 -08:00
quicklist.c
readahead.c
rmap.c	mm: memcontrol: track move_lock state internally	2015-02-11 17:06:00 -08:00
shmem.c	swap: remove unused mem_cgroup_uncharge_swapcache declaration	2015-02-11 17:06:00 -08:00
slab.c	slab: fix cpuset check in fallback_alloc	2014-12-13 12:42:53 -08:00
slab.h	memcg: zap __memcg_{charge,uncharge}_slab	2015-02-10 14:30:34 -08:00
slab_common.c	memcg: zap memcg_slab_caches and memcg_slab_mutex	2015-02-10 14:30:34 -08:00
slob.c
slub.c	mm/slub.c: fix typo in comment	2015-02-10 14:30:30 -08:00
sparse-vmemmap.c
sparse.c
swap.c	rmap: drop support of non-linear mappings	2015-02-10 14:30:31 -08:00
swap_cgroup.c
swap_state.c
swapfile.c
truncate.c
util.c	mm: gup: use get_user_pages_unlocked within get_user_pages_fast	2015-02-11 17:06:05 -08:00
vmacache.c	mm,vmacache: count number of system-wide flushes	2014-12-13 12:42:48 -08:00
vmalloc.c	mm/vmalloc.c: fix memory ordering bug	2014-12-13 12:42:49 -08:00
vmpressure.c
vmscan.c	mm: memcontrol: default hierarchy interface for memory	2015-02-11 17:06:02 -08:00
vmstat.c	mm/vmstat.c: fix/cleanup ifdefs	2015-02-10 14:30:30 -08:00
workingset.c
zbud.c	mm/zbud: init user ops only when it is needed	2014-12-13 12:42:51 -08:00
zpool.c
zsmalloc.c	mm/zsmalloc: adjust order of functions	2014-12-18 19:08:11 -08:00
zswap.c	mm/zswap: delete unnecessary check before calling free_percpu()	2014-12-13 12:42:50 -08:00