Aneesh Kumar K.V 56eecdb912 mm: Use ptep/pmdp_set_numa() for updating _PAGE_NUMA bit ... Archs like ppc64 doesn't do tlb flush in set_pte/pmd functions when using a hash table MMU for various reasons (the flush is handled as part of the PTE modification when necessary). ppc64 thus doesn't implement flush_tlb_range for hash based MMUs. Additionally ppc64 require the tlb flushing to be batched within ptl locks. The reason to do that is to ensure that the hash page table is in sync with linux page table. We track the hpte index in linux pte and if we clear them without flushing hash and drop the ptl lock, we can have another cpu update the pte and can end up with duplicate entry in the hash table, which is fatal. We also want to keep set_pte_at simpler by not requiring them to do hash flush for performance reason. We do that by assuming that set_pte_at() is never *ever* called on a PTE that is already valid. This was the case until the NUMA code went in which broke that assumption. Fix that by introducing a new pair of helpers to set _PAGE_NUMA in a way similar to ptep/pmdp_set_wrprotect(), with a generic implementation using set_pte_at() and a powerpc specific one using the appropriate mechanism needed to keep the hash table in sync. Acked-by: Mel Gorman <mgorman@suse.de> Reviewed-by: Rik van Riel <riel@redhat.com> Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>		2014-02-17 11:19:36 +11:00
..
backing-dev.c	mm/backing-dev.c: check user buffer length before copying data to the related user buffer	2013-09-11 15:58:03 -07:00
balloon_compaction.c	mm: print more details for bad_page()	2014-01-23 16:36:50 -08:00
bootmem.c	mm/bootmem.c: remove unused local `map'	2013-11-13 12:09:09 +09:00
bounce.c	block: Convert bio_for_each_segment() to bvec_iter	2013-11-23 22:33:49 -08:00
cleancache.c	mm: dump page when hitting a VM_BUG_ON using VM_BUG_ON_PAGE	2014-01-23 16:36:50 -08:00
compaction.c	mm: improve documentation of page_order	2014-01-23 16:36:53 -08:00
debug-pagealloc.c
dmapool.c
fadvise.c
failslab.c
filemap.c	fix O_SYNC|O_APPEND syncing the wrong range on write()	2014-02-09 15:18:09 -05:00
filemap_xip.c	seqcount: Add lockdep functionality to seqcount/seqlock structures	2013-11-06 12:40:26 +01:00
fremap.c	mm: fix use-after-free in sys_remap_file_pages	2014-01-02 14:40:30 -08:00
frontswap.c
highmem.c
huge_memory.c	mm: Use ptep/pmdp_set_numa() for updating _PAGE_NUMA bit	2014-02-17 11:19:36 +11:00
hugetlb.c	mm: dump page when hitting a VM_BUG_ON using VM_BUG_ON_PAGE	2014-01-23 16:36:50 -08:00
hugetlb_cgroup.c	mm: dump page when hitting a VM_BUG_ON using VM_BUG_ON_PAGE	2014-01-23 16:36:50 -08:00
hwpoison-inject.c	mm/hwpoison: add '#' to hwpoison_inject	2014-01-21 16:19:48 -08:00
init-mm.c
internal.h	mm/page-writeback.c: do not count anon pages as dirtyable memory	2014-01-29 16:22:39 -08:00
interval_tree.c
Kconfig	zsmalloc: move it under mm	2014-01-30 16:56:55 -08:00
Kconfig.debug
kmemcheck.c
kmemleak-test.c
kmemleak.c	mm: kmemleak: avoid false negatives on vmalloc'ed objects	2013-11-13 12:09:07 +09:00
ksm.c	mm: audit/fix non-modular users of module_init in core code	2014-01-23 16:36:52 -08:00
list_lru.c	mm: list_lru: fix almost infinite loop causing effective livelock	2013-10-30 12:57:46 -07:00
maccess.c
madvise.c	mm/hwpoison: fix traversal of hugetlbfs pages to avoid printk flood	2013-09-30 14:31:02 -07:00
Makefile	zsmalloc: move it under mm	2014-01-30 16:56:55 -08:00
memblock.c	memblock: add limit checking to memblock_virt_alloc	2014-01-29 16:22:40 -08:00
memcontrol.c	memcg: fix mutex not unlocked on memcg_create_kmem_cache fail path	2014-01-30 16:56:56 -08:00
memory-failure.c	mm/memory-failure.c: shift page lock from head page to tail page after thp split	2014-01-23 16:36:52 -08:00
memory.c	mm: dump page when hitting a VM_BUG_ON using VM_BUG_ON_PAGE	2014-01-23 16:36:50 -08:00
memory_hotplug.c	mm/memory_hotplug.c: move register_memory_resource out of the lock_memory_hotplug	2014-01-23 16:36:52 -08:00
mempolicy.c	mm/mempolicy.c: fix mempolicy printing in numa_maps	2014-01-30 16:56:56 -08:00
mempool.c	mm/mempool.c: convert kmalloc_node(...GFP_ZERO...) to kzalloc_node(...)	2013-09-11 15:58:14 -07:00
migrate.c	mm/migrate.c: fix setting of cpupid on page migration twice against normal page	2014-01-27 21:02:40 -08:00
mincore.c	mm: do_mincore() cleanup	2014-01-23 16:36:52 -08:00
mlock.c	mm: dump page when hitting a VM_BUG_ON using VM_BUG_ON_PAGE	2014-01-23 16:36:50 -08:00
mm_init.c	mm: bring back /sys/kernel/mm	2014-01-27 21:02:39 -08:00
mmap.c	mm: ignore VM_SOFTDIRTY on VMA merging	2014-01-23 16:36:53 -08:00
mmu_context.c
mmu_notifier.c	mm: audit/fix non-modular users of module_init in core code	2014-01-23 16:36:52 -08:00
mmzone.c	mm: numa: Change page last {nid,pid} into {cpu,pid}	2013-10-09 14:47:45 +02:00
mprotect.c	mm: Use ptep/pmdp_set_numa() for updating _PAGE_NUMA bit	2014-02-17 11:19:36 +11:00
mremap.c	mm: revert mremap pud_free anti-fix	2013-10-16 21:35:53 -07:00
msync.c
nobootmem.c	mm/nobootmem: free_all_bootmem again	2014-01-23 16:36:52 -08:00
nommu.c	mm: add overcommit_kbytes sysctl variable	2014-01-21 16:19:44 -08:00
oom_kill.c	mm, oom: base root bonus on current usage	2014-01-30 16:56:56 -08:00
page-writeback.c	mm: __set_page_dirty_nobuffers() uses spin_lock_irqsave() instead of spin_lock_irq()	2014-02-06 13:48:51 -08:00
page_alloc.c	mm: show message when updating min_free_kbytes in thp	2014-01-23 16:36:52 -08:00
page_cgroup.c	Merge branch 'akpm' (incoming from Andrew)	2014-01-21 19:05:45 -08:00
page_io.c	Merge branch 'for-3.14/core' of git://git.kernel.dk/linux-block	2014-01-30 11:19:05 -08:00
page_isolation.c	mm: memory-hotplug: enable memory hotplug to handle hugepage	2013-09-11 15:57:48 -07:00
pagewalk.c	mm/pagewalk.c: fix walk_page_range() access of wrong PTEs	2013-10-30 14:27:03 -07:00
percpu-km.c
percpu-vm.c
percpu.c	Merge branch 'akpm' (incoming from Andrew)	2014-01-21 19:05:45 -08:00
pgtable-generic.c	mm: fix TLB flush race between migration, and change_protection_range	2013-12-18 19:04:51 -08:00
process_vm_access.c
quicklist.c
readahead.c	mm/readahead.c: fix do_readahead() for no readpage(s)	2014-01-29 16:22:40 -08:00
rmap.c	mm/rmap: fix coccinelle warnings	2014-01-23 16:36:53 -08:00
shmem.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2014-01-28 08:38:04 -08:00
slab.c	mm: Fix warning on make htmldocs caused by slab.c	2014-01-31 13:52:25 +02:00
slab.h	memcg, slab: RCU protect memcg_params for root caches	2014-01-23 16:36:51 -08:00
slab_common.c	slab: fix wrong retval on kmem_cache_create_memcg error path	2014-01-29 16:22:40 -08:00
slob.c	mm/sl[aou]b: Move kmallocXXX functions to common code	2013-09-04 20:51:33 +03:00
slub.c	Merge branch 'slab/next' of git://git.kernel.org/pub/scm/linux/kernel/git/penberg/linux	2014-02-02 11:30:08 -08:00
sparse-vmemmap.c	mm/sparse: use memblock apis for early memory allocations	2014-01-21 16:19:47 -08:00
sparse.c	mm/sparse: use memblock apis for early memory allocations	2014-01-21 16:19:47 -08:00
swap.c	mm: dump page when hitting a VM_BUG_ON using VM_BUG_ON_PAGE	2014-01-23 16:36:50 -08:00
swap_state.c	swap: add a simple detector for inappropriate swapin readahead	2014-02-06 13:48:51 -08:00
swapfile.c	mm/swap: fix race on swap_info reuse between swapoff and swapon	2014-02-06 13:48:51 -08:00
truncate.c	truncate: drop 'oldsize' truncate_pagecache() parameter	2013-09-12 15:38:02 -07:00
util.c	mm: add overcommit_kbytes sysctl variable	2014-01-21 16:19:44 -08:00
vmalloc.c	Revert "mm/vmalloc: interchage the implementation of vmalloc_to_{pfn,page}"	2014-01-27 21:02:39 -08:00
vmpressure.c	memcg: make cgroup_event deal with mem_cgroup instead of cgroup_subsys_state	2013-11-22 18:20:43 -05:00
vmscan.c	mm/page-writeback.c: do not count anon pages as dirtyable memory	2014-01-29 16:22:39 -08:00
vmstat.c	mm, x86: Account for TLB flushes only when debugging	2014-01-25 09:10:41 +01:00
zbud.c	mm/zbud: fix some trivial typos in comments	2013-09-11 15:57:35 -07:00
zsmalloc.c	zsmalloc: add copyright	2014-01-30 16:56:55 -08:00
zswap.c	mm/zswap.c: change params from hidden to ro	2014-01-23 16:36:50 -08:00