Gowans, James 14c99d6594 mm: split huge PUD on wp_huge_pud fallback ... 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>		2022-07-03 15:42:33 -07:00
..
damon	mm/damon: use set_huge_pte_at() to make huge pte old	2022-07-03 15:42:32 -07:00
kasan	mm: kasan: fix input of vmalloc_to_page()	2022-05-27 09:33:46 -07:00
kfence	mm/kfence: select random number before taking raw lock	2022-06-16 19:11:31 -07:00
backing-dev.c	init: Initialize noop_backing_dev_info early	2022-06-16 10:55:57 +02:00
balloon_compaction.c	mm/balloon_compaction: make balloon page compaction callbacks static	2022-03-28 16:52:57 -04:00
bootmem_info.c
cma_debug.c
cma_sysfs.c
cma.c	Revert "mm/cma.c: remove redundant cma_mutex lock"	2022-05-13 15:11:26 -07:00
cma.h	mm/cma: provide option to opt out from exposing pages on activation failure	2022-03-22 15:57:09 -07:00
compaction.c	mm, compaction: fast_find_migrateblock() should return pfn in the target zone	2022-05-13 16:48:57 -07:00
debug_page_ref.c
debug_vm_pgtable.c	mm/debug_vm_pgtable: add tests for __HAVE_ARCH_PTE_SWP_EXCLUSIVE	2022-05-09 18:20:45 -07:00
debug.c	mm: unexport page_init_poison	2022-03-24 19:06:45 -07:00
dmapool.c
early_ioremap.c	mm/early_ioremap: declare early_memremap_pgprot_adjust()	2022-03-22 15:57:11 -07:00
fadvise.c	riscv: compat: syscall: Add compat_sys_call_table implementation	2022-04-26 13:36:25 -07:00
failslab.c	mm: fix missing handler for __GFP_NOWARN	2022-05-19 14:08:55 -07:00
filemap.c	filemap: Handle sibling entries in filemap_get_read_batch()	2022-06-20 16:37:45 -04:00
folio-compat.c	fs: Remove aop flags parameter from grab_cache_page_write_begin()	2022-05-08 14:28:19 -04:00
frontswap.c
gup_test.c
gup_test.h
gup.c	Yang Shi has improved the behaviour of khugepaged collapsing of readonly	2022-05-26 12:32:41 -07:00
highmem.c	highmem: fix checks in __kmap_local_sched_{in,out}	2022-04-08 14:20:36 -10:00
hmm.c	mm: teach core mm about pte markers	2022-05-13 07:20:09 -07:00
huge_memory.c	mm: Clear page->private when splitting or migrating a page	2022-06-23 12:21:44 -04:00
hugetlb_cgroup.c
hugetlb_vmemmap.c	mm: hugetlb_vmemmap: fix CONFIG_HUGETLB_PAGE_FREE_VMEMMAP_DEFAULT_ON	2022-06-01 15:57:16 -07:00
hugetlb_vmemmap.h	mm: hugetlb_vmemmap: cleanup CONFIG_HUGETLB_PAGE_FREE_VMEMMAP*	2022-04-28 23:16:15 -07:00
hugetlb.c	delayacct: track delays from write-protect copy	2022-06-01 15:55:25 -07:00
hwpoison-inject.c	mm/memory-failure: disable unpoison once hw error happens	2022-06-16 19:11:32 -07:00
init-mm.c
internal.h	mm: split free page with properly free memory accounting and without race	2022-05-27 09:33:43 -07:00
interval_tree.c
io-mapping.c
ioremap.c
Kconfig	mm: Kconfig: reorganize misplaced mm options	2022-05-27 09:33:47 -07:00
Kconfig.debug	Two followon fixes for the post-5.19 series "Use pageblock_order for cma	2022-05-27 11:40:49 -07:00
khugepaged.c	mm: khugepaged: introduce khugepaged_enter_vma() helper	2022-05-19 14:08:50 -07:00
kmemleak.c	mm: kmemleak: take a full lowmem check in kmemleak_*_phys()	2022-04-15 14:49:56 -07:00
ksm.c	ksm: fix typo in comment	2022-05-25 10:47:48 -07:00
list_lru.c	mm/list_lru.c: revert "mm/list_lru: optimize memcg_reparent_list_lru_node()"	2022-04-08 14:20:36 -10:00
maccess.c	asm-generic updates for 5.18	2022-03-23 18:03:08 -07:00
madvise.c	mm/memory-failure: disable unpoison once hw error happens	2022-06-16 19:11:32 -07:00
Makefile	mm: hugetlb_vmemmap: cleanup CONFIG_HUGETLB_PAGE_FREE_VMEMMAP*	2022-04-28 23:16:15 -07:00
mapping_dirty_helpers.c
memblock.c	memblock: test suite and a small cleanup	2022-03-27 13:36:06 -07:00
memcontrol.c	mm: memcontrol: reference to tools/cgroup/memcg_slabinfo.py	2022-06-16 19:11:32 -07:00
memfd.c
memory_hotplug.c	mm: hugetlb_vmemmap: add hugetlb_optimize_vmemmap sysctl	2022-05-13 16:48:56 -07:00
memory-failure.c	mm/memory-failure: disable unpoison once hw error happens	2022-06-16 19:11:32 -07:00
memory.c	mm: split huge PUD on wp_huge_pud fallback	2022-07-03 15:42:33 -07:00
mempolicy.c	mm/mempolicy: fix uninit-value in mpol_rebind_policy()	2022-05-19 14:08:54 -07:00
mempool.c
memremap.c	mm/memremap: fix missing call to untrack_pfn() in pagemap_range()	2022-06-01 15:57:16 -07:00
memtest.c
migrate_device.c	mm: remember exclusively mapped anonymous pages with PG_anon_exclusive	2022-05-09 18:20:44 -07:00
migrate.c	mm: Clear page->private when splitting or migrating a page	2022-06-23 12:21:44 -04:00
mincore.c	mm: teach core mm about pte markers	2022-05-13 07:20:09 -07:00
mlock.c	mm/munlock: protect the per-CPU pagevec by a local_lock_t	2022-04-01 11:46:09 -07:00
mm_init.c
mmap_lock.c
mmap.c	powerpc updates for 5.19	2022-05-28 11:27:17 -07:00
mmu_gather.c	mm/mmu_gather: limit free batch count and add schedule point in tlb_batch_pages_flush	2022-04-28 23:16:12 -07:00
mmu_notifier.c	mm/mmu_notifier.c: fix race in mmu_interval_notifier_remove()	2022-04-21 20:01:10 -07:00
mmzone.c	Folio changes for 5.18	2022-03-22 17:03:12 -07:00
mprotect.c	mm/hugetlb: handle UFFDIO_WRITEPROTECT	2022-05-13 07:20:11 -07:00
mremap.c	Yang Shi has improved the behaviour of khugepaged collapsing of readonly	2022-05-26 12:32:41 -07:00
msync.c
nommu.c	no-MMU: expose vmalloc_huge() for alloc_large_system_hash()	2022-04-25 10:11:49 -07:00
oom_kill.c	mm/oom_kill.c: fix vm_oom_kill_table[] ifdeffery	2022-06-01 15:57:16 -07:00
page_alloc.c	Two followon fixes for the post-5.19 series "Use pageblock_order for cma	2022-05-27 11:40:49 -07:00
page_counter.c
page_ext.c	mm: use for_each_online_node and node_online instead of open coding	2022-04-29 14:36:58 -07:00
page_idle.c	mm: don't be stuck to rmap lock on reclaim path	2022-05-19 14:08:54 -07:00
page_io.c	Yang Shi has improved the behaviour of khugepaged collapsing of readonly	2022-05-26 12:32:41 -07:00
page_isolation.c	mm/page_isolation.c: fix one kernel-doc comment	2022-06-16 19:11:30 -07:00
page_owner.c	Yang Shi has improved the behaviour of khugepaged collapsing of readonly	2022-05-26 12:32:41 -07:00
page_poison.c
page_reporting.c
page_reporting.h
page_table_check.c	Six hotfixes. One from Miaohe Lin is considered a minor thing so it isn't	2022-05-27 11:29:35 -07:00
page_vma_mapped.c	mm: pvmw: add support for walking devmap pages	2022-04-28 23:16:10 -07:00
page-writeback.c	sysctl changes for v5.19-rc1	2022-05-26 16:57:20 -07:00
pagewalk.c
percpu-internal.h	percpu: improve percpu_alloc_percpu event trace	2022-05-13 07:20:18 -07:00
percpu-km.c
percpu-stats.c	mm: use vmalloc_array and vcalloc for array allocations	2022-03-08 09:30:46 -05:00
percpu-vm.c
percpu.c	percpu: improve percpu_alloc_percpu event trace	2022-05-13 07:20:18 -07:00
pgalloc-track.h
pgtable-generic.c	mm: avoid unnecessary flush on change_huge_pmd()	2022-05-13 07:20:05 -07:00
process_vm_access.c
ptdump.c	mm: sparsemem: use page table lock to protect kernel pmd operations	2022-03-22 15:57:08 -07:00
readahead.c	filemap: Fix serialization adding transparent huge pages to page cache	2022-06-23 12:22:00 -04:00
rmap.c	mm/rmap: fix dereferencing invalid subpage pointer in try_to_migrate_one()	2022-07-03 15:42:33 -07:00
rodata_test.c
secretmem.c	secretmem: Convert to free_folio	2022-05-09 23:12:53 -04:00
shmem.c	Two followon fixes for the post-5.19 series "Use pageblock_order for cma	2022-05-27 11:40:49 -07:00
shuffle.c
shuffle.h
slab_common.c	Yang Shi has improved the behaviour of khugepaged collapsing of readonly	2022-05-26 12:32:41 -07:00
slab.c	Yang Shi has improved the behaviour of khugepaged collapsing of readonly	2022-05-26 12:32:41 -07:00
slab.h	slab changes for 5.19	2022-05-25 10:24:04 -07:00
slob.c	mm: make minimum slab alignment a runtime property	2022-05-13 07:20:07 -07:00
slub.c	mm/slub: add missing TID updates on slab deactivation	2022-06-13 17:41:36 +02:00
sparse-vmemmap.c	mm: sparsemem: fix missing higher order allocation splitting	2022-07-03 15:42:32 -07:00
sparse.c	mm/memory-failure.c: move clear_hwpoisoned_pages	2022-05-13 07:20:19 -07:00
swap_cgroup.c	mm: use vmalloc_array and vcalloc for array allocations	2022-03-08 09:30:46 -05:00
swap_slots.c	mm/swap: remove buggy cache->nr check in refill_swap_slots_cache	2022-05-19 14:08:51 -07:00
swap_state.c	mm: filter out swapin error entry in shmem mapping	2022-05-27 09:33:46 -07:00
swap.c	mm: lru_cache_disable: use synchronize_rcu_expedited	2022-06-16 19:11:30 -07:00
swap.h	swap: convert add_to_swap() to take a folio	2022-05-13 07:20:15 -07:00
swapfile.c	Two followon fixes for the post-5.19 series "Use pageblock_order for cma	2022-05-27 11:40:49 -07:00
truncate.c	Filesystem folio changes for 5.18	2022-03-22 18:26:56 -07:00
usercopy.c	usercopy: Make usercopy resilient against ridiculously large copies	2022-06-13 09:54:52 -07:00
userfaultfd.c	mm: userfaultfd: fix UFFDIO_CONTINUE on fallocated shmem pages	2022-07-03 15:42:32 -07:00
util.c	powerpc updates for 5.19	2022-05-28 11:27:17 -07:00
vmacache.c
vmalloc.c	usercopy: Handle vm_map_ram() areas	2022-06-13 09:54:52 -07:00
vmpressure.c
vmscan.c	Yang Shi has improved the behaviour of khugepaged collapsing of readonly	2022-05-26 12:32:41 -07:00
vmstat.c	Bitmap patches for 5.19-rc1	2022-06-04 14:04:27 -07:00
workingset.c	memcg: sync flush only if periodic flush is delayed	2022-04-21 20:01:09 -07:00
z3fold.c	mm/z3fold: fix z3fold_page_migrate races with z3fold_map	2022-05-27 09:33:44 -07:00
zbud.c
zpool.c
zsmalloc.c	zsmalloc: fix races between asynchronous zspage free and page migration	2022-05-13 15:11:26 -07:00
zswap.c	zswap: memcg accounting	2022-05-19 14:08:53 -07:00