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Yang Shi f0849ac0b8 mm: thp: fix potential clearing to referenced flag in page_idle_clear_pte_refs_one() 
For PTE-mapped THP, the compound THP has not been split to normal 4K
pages yet, the whole THP is considered referenced if any one of sub page
is referenced.

When walking PTE-mapped THP by pvmw, all relevant PTEs will be checked
to retrieve referenced bit.  But, the current code just returns the
result of the last PTE.  If the last PTE has not referenced, the
referenced flag will be cleared.

Just set referenced when ptep{pmdp}_clear_young_notify() returns true.

Link: http://lkml.kernel.org/r/1518212451-87134-1-git-send-email-yang.shi@linux.alibaba.com
Signed-off-by: Yang Shi <yang.shi@linux.alibaba.com>
Reported-by: Gang Deng <gavin.dg@linux.alibaba.com>
Suggested-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2018-04-05 21:36:25 -07:00
..
kasan
slab, slub: skip unnecessary kasan_cache_shutdown()
2018-04-05 21:36:24 -07:00
backing-dev.c
Revert "bdi: add error handle for bdi_debug_register"
2017-12-21 10:01:30 -07:00
balloon_compaction.c
virtio_balloon: fix deadlock on OOM
2017-11-14 23:57:38 +02:00
bootmem.c
mm: docs: fix parameter names mismatch
2018-02-06 18:32:48 -08:00
cleancache.c
fs: switch ->s_uuid to uuid_t
2017-06-05 16:59:12 +02:00
cma_debug.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
cma.c
mm/cma.c: change pr_info to pr_err for cma_alloc fail log
2017-11-15 18:21:03 -08:00
cma.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
compaction.c
mm/compaction.c: fix comment for try_to_compact_pages()
2018-01-31 17:18:39 -08:00
debug_page_ref.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
debug.c
mm/debug.c: provide useful debugging information for VM_BUG
2018-01-04 16:45:09 -08:00
dmapool.c
lib/vsprintf.c: remove %Z support
2017-02-27 18:43:47 -08:00
early_ioremap.c
mm/early_ioremap: Fix boot hang with earlyprintk=efi,keep
2017-12-11 14:54:44 +01:00
fadvise.c
mm: add ksys_fadvise64_64() helper; remove in-kernel call to sys_fadvise64_64()
2018-04-02 20:16:10 +02:00
failslab.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
filemap.c
mm/filemap.c: remove include of hardirq.h
2018-01-31 17:18:36 -08:00
frame_vector.c
mm/frame_vector.c: release a semaphore in 'get_vaddr_frames()'
2017-12-14 16:00:48 -08:00
frontswap.c
mm, frontswap: convert frontswap_enabled to static key
2016-07-26 16:19:19 -07:00
gup_benchmark.c
mm: add infrastructure for get_user_pages_fast() benchmarking
2017-11-17 16:10:04 -08:00
gup.c
mm/gup.c: teach get_user_pages_unlocked to handle FOLL_NOWAIT
2018-03-09 16:40:01 -08:00
highmem.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
hmm.c
libnvdimm for 4.16
2018-02-06 10:41:33 -08:00
huge_memory.c
mm, thp: do not cause memcg oom for thp
2018-03-22 17:07:02 -07:00
hugetlb_cgroup.c
mm, hugetlb_cgroup: round limit_in_bytes down to hugepage size
2016-05-20 17:58:30 -07:00
hugetlb.c
hugetlbfs: check for pgoff value overflow
2018-03-22 17:07:01 -07:00
hwpoison-inject.c
mm/memory_failure: Remove unused trapno from memory_failure
2018-01-23 12:17:42 -06:00
init-mm.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
internal.h
Revert "mm, thp: Do not make pmd/pud dirty without a reason"
2017-11-29 09:01:01 -08:00
interval_tree.c
mm/interval_tree.c: use vma_pages() helper
2018-01-31 17:18:37 -08:00
Kconfig
treewide: simplify Kconfig dependencies for removed archs
2018-03-26 15:55:57 +02:00
Kconfig.debug
kmemcheck: rip it out
2017-11-15 18:21:05 -08:00
khugepaged.c
mm, thp: do not cause memcg oom for thp
2018-03-22 17:07:02 -07:00
kmemleak-test.c
mm: convert printk(KERN_<LEVEL> to pr_<level>
2016-03-17 15:09:34 -07:00
kmemleak.c
mm/kmemleak.c: wait for scan completion before disabling free
2018-03-28 13:42:05 -10:00
ksm.c
mm/ksm.c: make stable_node_dup() static
2018-04-05 21:36:24 -07:00
list_lru.c
mm/list_lru.c: mark expected switch fall-through
2017-11-15 18:21:07 -08:00
maccess.c
mm: docs: fix parameter names mismatch
2018-02-06 18:32:48 -08:00
madvise.c
mm/memory_failure: Remove unused trapno from memory_failure
2018-01-23 12:17:42 -06:00
Makefile
mm/swap_slots.c: use conditional compilation
2018-04-05 21:36:24 -07:00
memblock.c
mm: initialize pages on demand during boot
2018-04-05 21:36:25 -07:00
memcontrol.c
mm/memcontrol.c: fix parameter description mismatch
2018-03-28 13:42:05 -10:00
memory_hotplug.c
libnvdimm for 4.16
2018-02-06 10:41:33 -08:00
memory-failure.c
x86/mm, mm/hwpoison: Don't unconditionally unmap kernel 1:1 pages
2018-02-13 16:25:06 +01:00
memory.c
mm, swap: Add infrastructure for saving page metadata on swap
2018-03-18 07:38:45 -07:00
mempolicy.c
Merge branch 'syscalls-next' of git://git.kernel.org/pub/scm/linux/kernel/git/brodo/linux
2018-04-02 21:22:12 -07:00
mempool.c
kasan: detect invalid frees for large mempool objects
2018-02-06 18:32:43 -08:00
memtest.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
migrate.c
mm: add kernel_move_pages() helper, move compat syscall to mm/migrate.c
2018-04-02 20:15:32 +02:00
mincore.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
mlock.c
mm, mlock, vmscan: no more skipping pagevecs
2018-02-21 15:35:42 -08:00
mm_init.c
mm: convert printk(KERN_<LEVEL> to pr_<level>
2016-03-17 15:09:34 -07:00
mmap.c
mm: always print RLIMIT_DATA warning
2018-04-05 21:36:24 -07:00
mmu_context.c
sched/headers: Prepare to move the task_lock()/unlock() APIs to <linux/sched/task.h>
2017-03-02 08:42:38 +01:00
mmu_notifier.c
mm, mmu_notifier: annotate mmu notifiers with blockable invalidate callbacks
2018-01-31 17:18:38 -08:00
mmzone.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
mprotect.c
mm: Clear arch specific VM flags on protection change
2018-03-18 07:38:47 -07:00
mremap.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
msync.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
nobootmem.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
nommu.c
Merge branch 'syscalls-next' of git://git.kernel.org/pub/scm/linux/kernel/git/brodo/linux
2018-04-02 21:22:12 -07:00
oom_kill.c
mm, oom: avoid reaping only for mm's with blockable invalidate callbacks
2018-01-31 17:18:38 -08:00
page_alloc.c
mm: initialize pages on demand during boot
2018-04-05 21:36:25 -07:00
page_counter.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
page_ext.c
mm/page_ext.c: make page_ext_init a noop when CONFIG_PAGE_EXTENSION but nothing uses it
2018-01-31 17:18:39 -08:00
page_idle.c
mm: thp: fix potential clearing to referenced flag in page_idle_clear_pte_refs_one()
2018-04-05 21:36:25 -07:00
page_io.c
block: convert to bio_first_bvec_all & bio_first_page_all
2018-01-06 09:18:00 -07:00
page_isolation.c
mm: distinguish CMA and MOVABLE isolation in has_unmovable_pages()
2017-11-15 18:21:02 -08:00
page_owner.c
mm/page_owner: fix recursion bug after changing skip entries
2018-03-28 13:42:05 -10:00
page_poison.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
page_vma_mapped.c
mm, page_vma_mapped: Introduce pfn_in_hpage()
2018-01-22 12:15:57 -08:00
page-writeback.c
Revert "mm/page-writeback.c: print a warning if the vm dirtiness settings are illogical"
2017-11-29 18:40:43 -08:00
pagewalk.c
mm: docs: add blank lines to silence sphinx "Unexpected indentation" errors
2018-02-06 18:32:48 -08:00
percpu-internal.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
percpu-km.c
percpu: allow select gfp to be passed to underlying allocators
2018-02-18 05:33:01 -08:00
percpu-stats.c
percpu: fix starting offset for chunk statistics traversal
2017-09-27 14:45:57 -07:00
percpu-vm.c
percpu: allow select gfp to be passed to underlying allocators
2018-02-18 05:33:01 -08:00
percpu.c
arch: remove obsolete architecture ports
2018-04-02 20:20:12 -07:00
pgtable-generic.c
mm: do not lose dirty and accessed bits in pmdp_invalidate()
2018-01-31 17:18:38 -08:00
process_vm_access.c
mm: docs: add blank lines to silence sphinx "Unexpected indentation" errors
2018-02-06 18:32:48 -08:00
quicklist.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
readahead.c
mm: add ksys_readahead() helper; remove in-kernel calls to sys_readahead()
2018-04-02 20:16:12 +02:00
rmap.c
mm, swap: Add infrastructure for saving page metadata on swap
2018-03-18 07:38:45 -07:00
rodata_test.c
mm: fix RODATA_TEST failure "rodata_test: test data was not read only"
2017-10-03 17:54:24 -07:00
shmem.c
mm/shmem: do not wait for lock_page() in shmem_unused_huge_shrink()
2018-03-22 17:07:01 -07:00
slab_common.c
mm/slab_common.c: remove test if cache name is accessible
2018-04-05 21:36:24 -07:00
slab.c
slab, slub: skip unnecessary kasan_cache_shutdown()
2018-04-05 21:36:24 -07:00
slab.h
slab, slub: skip unnecessary kasan_cache_shutdown()
2018-04-05 21:36:24 -07:00
slob.c
slab, slub, slob: add slab_flags_t
2017-11-15 18:21:01 -08:00
slub.c
slab, slub: skip unnecessary kasan_cache_shutdown()
2018-04-05 21:36:24 -07:00
sparse-vmemmap.c
mm: merge vmem_altmap_alloc into altmap_alloc_block_buf
2018-01-08 11:46:23 -08:00
sparse.c
arch: remove obsolete architecture ports
2018-04-02 20:20:12 -07:00
swap_cgroup.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
swap_slots.c
mm/swap_slots.c: use conditional compilation
2018-04-05 21:36:24 -07:00
swap_state.c
mm: remove cold parameter for release_pages
2017-11-15 18:21:06 -08:00
swap.c
mm/swap.c: make functions and their kernel-doc agree (again)
2018-02-21 15:35:43 -08:00
swapfile.c
vfs: do bulk POLL* -> EPOLL* replacement
2018-02-11 14:34:03 -08:00
truncate.c
mm: add unmap_mapping_pages()
2018-01-31 17:18:37 -08:00
usercopy.c
usercopy: WARN() on slab cache usercopy region violations
2018-01-15 12:07:48 -08:00
userfaultfd.c
mm/userfaultfd.c: remove duplicate include
2018-02-06 18:32:47 -08:00
util.c
new primitive: vmemdup_user()
2018-01-07 13:06:15 -05:00
vmacache.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
vmalloc.c
vmalloc: fix __GFP_HIGHMEM usage for vmalloc_32 on 32b systems
2018-02-21 15:35:43 -08:00
vmpressure.c
mm, vmpressure: pass-through notification support
2017-07-10 16:32:31 -07:00
vmscan.c
mm/vmscan: wake up flushers for legacy cgroups too
2018-03-22 17:07:01 -07:00
vmstat.c
mm/vmstat.c: fix vmstat_update() preemption BUG
2018-03-28 13:42:05 -10:00
workingset.c
mm, truncate: do not check mapping for every page being truncated
2017-11-15 18:21:06 -08:00
z3fold.c
mm: docs: fix parameter names mismatch
2018-02-06 18:32:48 -08:00
zbud.c
mm: docs: fix parameter names mismatch
2018-02-06 18:32:48 -08:00
zpool.c
mm/zpool.c: zpool_evictable: fix mismatch in parameter name and kernel-doc
2018-02-21 15:35:43 -08:00
zsmalloc.c
mm/zsmalloc: Prepare to variable MAX_PHYSMEM_BITS
2018-02-14 13:11:13 +01:00
zswap.c
mm, swap, frontswap: fix THP swap if frontswap enabled
2018-02-21 15:35:43 -08:00