Gowans, James e4967d2288 mm: split huge PUD on wp_huge_pud fallback ... commit 14c99d6594 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 21:24:11 +02:00
..
damon	mm/damon/dbgfs: fix 'struct pid' leaks in 'dbgfs_target_ids_write()'	2022-01-05 12:42:39 +01:00
kasan	kasan: prevent cpu_quarantine corruption when CPU offline and cache shrink occur at same time	2022-05-09 09:14:41 +02:00
kfence	mm/kfence: reset PG_slab and memcg_data before freeing __kfence_pool	2022-05-25 09:57:23 +02:00
Kconfig	kmap_local: don't assume kmap PTEs are linear arrays in memory	2021-11-25 09:48:43 +01:00
Kconfig.debug	…
Makefile	mm: introduce Data Access MONitor (DAMON)	2021-09-08 11:50:24 -07:00
backing-dev.c	init: Initialize noop_backing_dev_info early	2022-06-22 14:22:02 +02:00
balloon_compaction.c	…
bootmem_info.c	…
cleancache.c	…
cma.c	Revert "mm/cma.c: remove redundant cma_mutex lock"	2022-06-09 10:23:27 +02:00
cma.h	…
cma_debug.c	…
cma_sysfs.c	…
compaction.c	mm, compaction: fast_find_migrateblock() should return pfn in the target zone	2022-06-09 10:23:21 +02:00
debug.c	mm/debug: sync up latest migrate_reason to migrate_reason_names	2021-09-24 16:13:35 -07:00
debug_page_ref.c	…
debug_vm_pgtable.c	mm/debug_vm_pgtable: remove pte entry from the page table	2022-02-08 18:34:05 +01:00
dmapool.c	…
early_ioremap.c	mm/early_ioremap.c: remove redundant early_ioremap_shutdown()	2021-09-08 11:50:24 -07:00
fadvise.c	…
failslab.c	…
filemap.c	mm/filemap: fix UAF in find_lock_entries	2022-07-12 16:34:47 +02:00
frontswap.c	…
gup.c	mm: fix invalid page pointer returned with FOLL_PIN gups	2022-05-15 20:18:53 +02:00
gup_test.c	…
gup_test.h	…
highmem.c	highmem: fix checks in __kmap_local_sched_{in,out}	2022-04-13 20:59:21 +02:00
hmm.c	mm/hmm.c: allow VM_MIXEDMAP to work with hmm_range_fault	2022-01-27 11:05:43 +01:00
huge_memory.c	mm/huge_memory: do not overkill when splitting huge_zero_page	2022-05-18 10:26:55 +02:00
hugetlb.c	mm/hwpoison: fix race between hugetlb free/demotion and memory_failure_hugetlb()	2022-07-12 16:35:06 +02:00
hugetlb_cgroup.c	…
hugetlb_vmemmap.c	…
hugetlb_vmemmap.h	…
hwpoison-inject.c	mm/hwpoison: avoid the impact of hwpoison_filter() return value on mce handler	2022-07-12 16:35:05 +02:00
init-mm.c	…
internal.h	…
interval_tree.c	…
io-mapping.c	…
ioremap.c	mm: move ioremap_page_range to vmalloc.c	2021-09-08 11:50:24 -07:00
khugepaged.c	mm: khugepaged: skip huge page collapse for special files	2021-10-28 17:18:55 -07:00
kmemleak.c	mm: kmemleak: take a full lowmem check in kmemleak_*_phys()	2022-04-20 09:34:18 +02:00
ksm.c	mm/ksm: remove old GCC 4.9+ check	2021-09-13 10:18:28 -07:00
list_lru.c	…
maccess.c	…
madvise.c	mm/hwpoison: avoid the impact of hwpoison_filter() return value on mce handler	2022-07-12 16:35:05 +02:00
mapping_dirty_helpers.c	…
memblock.c	memblock: use kfree() to release kmalloced memblock regions	2022-03-02 11:48:10 +01:00
memcontrol.c	memcg: sync flush only if periodic flush is delayed	2022-04-27 14:38:57 +02:00
memfd.c	memfd: fix F_SEAL_WRITE after shmem huge page allocated	2022-03-08 19:12:48 +01:00
memory-failure.c	Revert "mm/memory-failure.c: fix race with changing page compound again"	2022-07-12 16:35:17 +02:00
memory.c	mm: split huge PUD on wp_huge_pud fallback	2022-07-21 21:24:11 +02:00
memory_hotplug.c	Merge branch 'akpm' (patches from Andrew)	2021-09-08 12:55:35 -07:00
mempolicy.c	mm/mempolicy: fix mpol_new leak in shared_policy_replace	2022-04-13 20:59:22 +02:00
mempool.c	…
memremap.c	mm/memremap: fix missing call to untrack_pfn() in pagemap_range()	2022-06-09 10:23:28 +02:00
memtest.c	…
migrate.c	mm: fix missing cache flush for all tail pages of compound page	2022-05-15 20:18:52 +02:00
mincore.c	…
mlock.c	mm/mlock: fix potential imbalanced rlimit ucounts adjustment	2022-05-15 20:18:53 +02:00
mm_init.c	…
mmap.c	mm, hugetlb: allow for "high" userspace addresses	2022-04-27 14:38:57 +02:00
mmap_lock.c	…
mmu_gather.c	…
mmu_notifier.c	mm/mmu_notifier.c: fix race in mmu_interval_notifier_remove()	2022-04-27 14:38:58 +02:00
mmzone.c	…
mprotect.c	mm: don't try to NUMA-migrate COW pages that have other uses	2022-02-23 12:03:03 +01:00
mremap.c	mmmremap.c: avoid pointless invalidate_range_start/end on mremap(old_size=0)	2022-04-13 20:59:22 +02:00
msync.c	…
nommu.c	Merge tag 'denywrite-for-5.15' of git://github.com/davidhildenbrand/linux	2021-09-04 11:35:47 -07:00
oom_kill.c	oom_kill.c: futex: delay the OOM reaper to allow time for proper futex cleanup	2022-04-27 14:38:58 +02:00
page-writeback.c	Merge branch 'akpm' (patches from Andrew)	2021-09-03 10:08:28 -07:00
page_alloc.c	mm/page_alloc: always attempt to allocate at least one page during bulk allocation	2022-06-09 10:23:27 +02:00
page_counter.c	…
page_ext.c	mm/migrate: add CPU hotplug to demotion #ifdef	2021-10-18 20:22:02 -10:00
page_idle.c	mm/idle_page_tracking: make PG_idle reusable	2021-09-08 11:50:24 -07:00
page_io.c	mm: fix unexpected zeroed page mapping with zram swap	2022-04-20 09:34:18 +02:00
page_isolation.c	Merge branch 'akpm' (patches from Andrew)	2021-09-08 12:55:35 -07:00
page_owner.c	mm: remove pfn_valid_within() and CONFIG_HOLES_IN_ZONE	2021-09-08 11:50:22 -07:00
page_poison.c	…
page_reporting.c	…
page_reporting.h	…
page_vma_mapped.c	…
pagewalk.c	…
percpu-internal.h	…
percpu-km.c	…
percpu-stats.c	…
percpu-vm.c	…
percpu.c	Merge branch 'akpm' (patches from Andrew)	2021-09-08 12:55:35 -07:00
pgalloc-track.h	…
pgtable-generic.c	…
process_vm_access.c	…
ptdump.c	…
readahead.c	…
rmap.c	mm: fix race between MADV_FREE reclaim and blkdev direct IO read	2022-04-13 20:59:14 +02:00
rodata_test.c	…
secretmem.c	mm/secretmem: fix panic when growing a memfd_secret	2022-04-20 09:34:18 +02:00
shmem.c	mm: shmem: fix missing cache flush in shmem_mfill_atomic_pte()	2022-05-15 20:18:53 +02:00
shuffle.c	…
shuffle.h	…
slab.c	mm, kfence: support kmem_dump_obj() for KFENCE objects	2022-04-27 14:38:51 +02:00
slab.h	mm, kfence: support kmem_dump_obj() for KFENCE objects	2022-04-27 14:38:51 +02:00
slab_common.c	mm, kfence: support kmem_dump_obj() for KFENCE objects	2022-04-27 14:38:51 +02:00
slob.c	mm, kfence: support kmem_dump_obj() for KFENCE objects	2022-04-27 14:38:51 +02:00
slub.c	mm/slub: add missing TID updates on slab deactivation	2022-07-12 16:34:47 +02:00
sparse-vmemmap.c	…
sparse.c	…
swap.c	mm: fs: invalidate bh_lrus for only cold path	2021-09-24 16:13:35 -07:00
swap_cgroup.c	…
swap_slots.c	…
swap_state.c	mm: swap: get rid of livelock in swapin readahead	2022-03-23 09:16:41 +01:00
swapfile.c	…
truncate.c	Merge branch 'akpm' (patches from Andrew)	2021-09-03 10:08:28 -07:00
usercopy.c	mm/usercopy: return 1 from hardened_usercopy __setup() handler	2022-04-08 14:24:14 +02:00
userfaultfd.c	mm: userfaultfd: fix UFFDIO_CONTINUE on fallocated shmem pages	2022-07-21 21:24:11 +02:00
util.c	mm: vmalloc: introduce array allocation functions	2022-07-12 16:35:01 +02:00
vmacache.c	…
vmalloc.c	mm: defer kmemleak object creation of module_alloc()	2022-03-08 19:12:38 +01:00
vmpressure.c	mm/vmpressure: replace vmpressure_to_css() with vmpressure_to_memcg()	2021-09-03 09:58:17 -07:00
vmscan.c	mm,vmscan: fix divide by zero in get_scan_count	2021-09-08 18:45:53 -07:00
vmstat.c	mm/vmstat: protect per cpu variables with preempt disable on RT	2021-09-08 15:32:34 -07:00
workingset.c	memcg: sync flush only if periodic flush is delayed	2022-04-27 14:38:57 +02:00
z3fold.c	…
zbud.c	…
zpool.c	…
zsmalloc.c	zsmalloc: fix races between asynchronous zspage free and page migration	2022-06-06 08:43:39 +02:00
zswap.c	…