Gowans, James 931dbcc2e0 mm: split huge PUD on wp_huge_pud fallback ... commit 14c99d65941538aa33edd8dc7b1bbbb593c324a2 upstream. Currently the implementation will split the PUD when a fallback is taken inside the create_huge_pud function. This isn't where it should be done: the splitting should be done in wp_huge_pud, just like it's done for PMDs. Reason being that if a callback is taken during create, there is no PUD yet so nothing to split, whereas if a fallback is taken when encountering a write protection fault there is something to split. It looks like this was the original intention with the commit where the splitting was introduced, but somehow it got moved to the wrong place between v1 and v2 of the patch series. Rebase mistake perhaps. Link: https://lkml.kernel.org/r/6f48d622eb8bce1ae5dd75327b0b73894a2ec407.camel@amazon.com Fixes: 327e9fd489 ("mm: Split huge pages on write-notify or COW") Signed-off-by: James Gowans <jgowans@amazon.com> Reviewed-by: Thomas Hellström <thomas.hellstrom@linux.intel.com> Cc: Christian König <christian.koenig@amd.com> Cc: Jan H. Schönherr <jschoenh@amazon.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2022-07-21 21:19:59 +02:00
..
kasan	kasan: prevent cpu_quarantine corruption when CPU offline and cache shrink occur at same time	2022-05-09 09:05:07 +02:00
backing-dev.c	mm: bdi: initialize bdi_min_ratio when bdi is unregistered	2021-12-14 11:32:37 +01:00
balloon_compaction.c
cleancache.c
cma_debug.c
cma.c
cma.h
compaction.c	mm, compaction: fast_find_migrateblock() should return pfn in the target zone	2022-06-09 10:21:23 +02:00
debug_page_ref.c
debug_vm_pgtable.c	mm/debug_vm_pgtable: remove pte entry from the page table	2022-02-08 18:30:35 +01:00
debug.c
dmapool.c
early_ioremap.c
fadvise.c
failslab.c
filemap.c	mm/filemap: add missing mem_cgroup_uncharge() to __add_to_page_cache_locked()	2021-02-10 09:29:21 +01:00
frame_vector.c
frontswap.c
gup_benchmark.c
gup.c	mm/gup: fix try_grab_compound_head() race with split_huge_page()	2021-07-14 16:55:42 +02:00
highmem.c
hmm.c	mm/hmm.c: allow VM_MIXEDMAP to work with hmm_range_fault	2022-01-27 10:54:36 +01:00
huge_memory.c	mm/userfaultfd: fix uffd-wp special cases for fork()	2021-07-25 14:36:18 +02:00
hugetlb_cgroup.c	hugetlb_cgroup: fix imbalanced css_get and css_put pair for shared mappings	2021-03-30 14:31:54 +02:00
hugetlb.c	hugetlb: fix huge_pmd_unshare address update	2022-06-09 10:21:27 +02:00
hwpoison-inject.c
init-mm.c	mm/gup: prevent gup_fast from racing with COW during fork	2020-12-30 11:53:54 +01:00
internal.h	mm/thp: fix vma_address() if virtual address below file offset	2021-06-30 08:47:27 -04:00
interval_tree.c
ioremap.c
Kconfig	mm/zsmalloc.c: drop ZSMALLOC_PGTABLE_MAPPING	2020-12-06 10:19:07 -08:00
Kconfig.debug
khugepaged.c	mm: khugepaged: skip huge page collapse for special files	2021-11-06 14:10:09 +01:00
kmemleak.c	mm: kmemleak: take a full lowmem check in kmemleak_*_phys()	2022-04-20 09:23:25 +02:00
ksm.c	ksm: fix potential missing rmap_item for stable_node	2021-05-19 10:13:07 +02:00
list_lru.c	mm: list_lru: set shrinker map bit when child nr_items is not zero	2020-12-06 10:19:07 -08:00
maccess.c
madvise.c	Revert "mm: madvise: skip unmapped vma holes passed to process_madvise"	2022-04-08 14:39:54 +02:00
Makefile
mapping_dirty_helpers.c
memblock.c	memblock: use kfree() to release kmalloced memblock regions	2022-03-02 11:42:57 +01:00
memcontrol.c	mm/memcontrol: return 1 from cgroup.memory __setup() handler	2022-04-08 14:40:43 +02:00
memfd.c	memfd: fix F_SEAL_WRITE after shmem huge page allocated	2022-03-08 19:09:36 +01:00
memory_hotplug.c	mm/memory_hotplug: use "unsigned long" for PFN in zone_for_pfn_range()	2021-09-22 12:27:59 +02:00
memory-failure.c	mm/hwpoison: clear MF_COUNT_INCREASED before retrying get_any_page()	2021-12-29 12:26:05 +01:00
memory.c	mm: split huge PUD on wp_huge_pud fallback	2022-07-21 21:19:59 +02:00
mempolicy.c	mm/mempolicy: fix mpol_new leak in shared_policy_replace	2022-04-13 21:01:08 +02:00
mempool.c
memremap.c	mm: fix memory_failure() handling of dax-namespace metadata	2021-03-04 11:38:21 +01:00
memtest.c
migrate.c	mm: fix missing cache flush for all tail pages of compound page	2022-05-15 20:00:09 +02:00
mincore.c
mlock.c
mm_init.c
mmap.c	mm, hugetlb: allow for "high" userspace addresses	2022-04-27 13:53:54 +02:00
mmu_gather.c
mmu_notifier.c	mm/mmu_notifier.c: fix race in mmu_interval_notifier_remove()	2022-04-27 13:53:54 +02:00
mmzone.c	arm: remove CONFIG_ARCH_HAS_HOLES_MEMORYMODEL	2022-05-15 20:00:09 +02:00
mprotect.c	mm: don't try to NUMA-migrate COW pages that have other uses	2022-02-23 12:00:57 +01:00
mremap.c	mmmremap.c: avoid pointless invalidate_range_start/end on mremap(old_size=0)	2022-04-13 21:01:08 +02:00
msync.c
nommu.c
oom_kill.c	oom_kill.c: futex: delay the OOM reaper to allow time for proper futex cleanup	2022-04-27 13:53:54 +02:00
page_alloc.c	mm: page_alloc: fix building error on -Werror=array-compare	2022-04-27 13:53:45 +02:00
page_counter.c
page_ext.c
page_idle.c
page_io.c	mm: fix unexpected zeroed page mapping with zram swap	2022-04-20 09:23:25 +02:00
page_isolation.c
page_owner.c
page_poison.c
page_reporting.c
page_reporting.h
page_vma_mapped.c	mm/thp: another PVMW_SYNC fix in page_vma_mapped_walk()	2021-06-30 08:47:29 -04:00
page-writeback.c	mm: make wait_on_page_writeback() wait for multiple pending writebacks	2021-01-12 20:18:22 +01:00
pagewalk.c
percpu-internal.h	percpu: make pcpu_nr_empty_pop_pages per chunk type	2021-04-14 08:42:03 +02:00
percpu-km.c
percpu-stats.c	percpu: make pcpu_nr_empty_pop_pages per chunk type	2021-04-14 08:42:03 +02:00
percpu-vm.c
percpu.c	percpu: make pcpu_nr_empty_pop_pages per chunk type	2021-04-14 08:42:03 +02:00
pgalloc-track.h
pgtable-generic.c	mm/thp: fix __split_huge_pmd_locked() on shmem migration entry	2021-06-30 08:47:26 -04:00
process_vm_access.c	mm/process_vm_access.c: include compat.h	2021-01-19 18:27:21 +01:00
ptdump.c	mm: ptdump: fix build failure	2021-04-21 13:00:57 +02:00
readahead.c
rmap.c	mm: fix race between MADV_FREE reclaim and blkdev direct IO read	2022-04-13 21:01:03 +02:00
rodata_test.c
shmem.c	shmem: fix a race between shmem_unused_huge_shrink and shmem_evict_inode	2022-01-27 10:53:44 +01:00
shuffle.c
shuffle.h
slab_common.c	mm/slub: fix redzoning for small allocations	2021-06-23 14:42:54 +02:00
slab.c	mm/sl?b.c: remove ctor argument from kmem_cache_flags	2021-05-14 09:50:45 +02:00
slab.h	mm: kmemleak: slob: respect SLAB_NOLEAKTRACE flag	2021-11-26 10:39:19 +01:00
slob.c
slub.c	mm/slub: add missing TID updates on slab deactivation	2022-07-12 16:32:16 +02:00
sparse-vmemmap.c
sparse.c	mm/sparse: add the missing sparse_buffer_fini() in error branch	2021-05-14 09:50:45 +02:00
swap_cgroup.c
swap_slots.c
swap_state.c	mm: swap: get rid of livelock in swapin readahead	2022-03-23 09:13:27 +01:00
swap.c
swapfile.c	mm/swap: fix pte_same_as_swp() not removing uffd-wp bit when compare	2021-06-23 14:42:53 +02:00
truncate.c	mm/thp: unmap_mapping_page() to fix THP truncate_cleanup_page()	2021-06-30 08:47:27 -04:00
usercopy.c	mm/usercopy: return 1 from hardened_usercopy __setup() handler	2022-04-08 14:40:43 +02:00
userfaultfd.c	mm: userfaultfd: fix missing cache flush in mcopy_atomic_pte() and __mcopy_atomic()	2022-05-15 20:00:09 +02:00
util.c	random: move randomize_page() into mm where it belongs	2022-05-30 09:33:45 +02:00
vmacache.c
vmalloc.c	mm/vmalloc.c: fix potential memory leak	2021-01-19 18:27:21 +01:00
vmpressure.c
vmscan.c	mm,vmscan: fix divide by zero in get_scan_count	2021-09-18 13:40:36 +02:00
vmstat.c	arm: remove CONFIG_ARCH_HAS_HOLES_MEMORYMODEL	2022-05-15 20:00:09 +02:00
workingset.c
z3fold.c	mm/z3fold: use release_z3fold_page_locked() to release locked z3fold page	2021-07-14 16:56:51 +02:00
zbud.c
zpool.c
zsmalloc.c	zsmalloc: fix races between asynchronous zspage free and page migration	2022-06-06 08:42:43 +02:00
zswap.c