Peter Xu 6041c69179 mm/hugetlb: take care of UFFDIO_COPY_MODE_WP ... Pass the wp_copy variable into hugetlb_mcopy_atomic_pte() thoughout the stack. Apply the UFFD_WP bit if UFFDIO_COPY_MODE_WP is with UFFDIO_COPY. Hugetlb pages are only managed by hugetlbfs, so we're safe even without setting dirty bit in the huge pte if the page is installed as read-only. However we'd better still keep the dirty bit set for a read-only UFFDIO_COPY pte (when UFFDIO_COPY_MODE_WP bit is set), not only to match what we do with shmem, but also because the page does contain dirty data that the kernel just copied from the userspace. Link: https://lkml.kernel.org/r/20220405014904.14643-1-peterx@redhat.com Signed-off-by: Peter Xu <peterx@redhat.com> Cc: Alistair Popple <apopple@nvidia.com> Cc: Andrea Arcangeli <aarcange@redhat.com> Cc: Axel Rasmussen <axelrasmussen@google.com> Cc: David Hildenbrand <david@redhat.com> Cc: Hugh Dickins <hughd@google.com> Cc: Jerome Glisse <jglisse@redhat.com> Cc: "Kirill A . Shutemov" <kirill@shutemov.name> Cc: Matthew Wilcox <willy@infradead.org> Cc: Mike Kravetz <mike.kravetz@oracle.com> Cc: Mike Rapoport <rppt@linux.vnet.ibm.com> Cc: Nadav Amit <nadav.amit@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>		2022-05-13 07:20:10 -07:00
..
damon	mm/damon/reclaim: support online inputs update	2022-05-13 07:20:09 -07:00
kasan	kasan: fix sleeping function called from invalid context on RT kernel	2022-04-29 14:36:58 -07:00
kfence	kfence: enable check kfence canary on panic via boot param	2022-05-13 07:20:06 -07:00
backing-dev.c	remove congestion tracking framework	2022-03-22 15:57:01 -07:00
balloon_compaction.c	mm/balloon_compaction: make balloon page compaction callbacks static	2022-03-28 16:52:57 -04:00
bootmem_info.c
cma.c	mm/cma: provide option to opt out from exposing pages on activation failure	2022-03-22 15:57:09 -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
cma_debug.c
cma_sysfs.c
compaction.c	mm: compaction: make sure highest is above the min_pfn	2022-04-28 23:16:19 -07:00
debug.c	mm: unexport page_init_poison	2022-03-24 19:06:45 -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
dmapool.c	mm/dmapool.c: revert "make dma pool to use kmalloc_node"	2022-01-15 16:30:28 +02:00
early_ioremap.c	mm/early_ioremap: declare early_memremap_pgprot_adjust()	2022-03-22 15:57:11 -07:00
fadvise.c	remove inode_congested()	2022-03-22 15:57:01 -07:00
failslab.c
filemap.c	mm: teach core mm about pte markers	2022-05-13 07:20:09 -07:00
folio-compat.c	mm/rmap: Convert rmap_walk() to take a folio	2022-03-21 13:01:35 -04:00
frontswap.c	frontswap: remove support for multiple ops	2022-01-22 08:33:38 +02:00
gup.c	mm/gup: fix comments to pin_user_pages_*()	2022-05-09 18:20:47 -07:00
gup_test.c
gup_test.h
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: avoid unnecessary flush on change_huge_pmd()	2022-05-13 07:20:05 -07:00
hugetlb.c	mm/hugetlb: take care of UFFDIO_COPY_MODE_WP	2022-05-13 07:20:10 -07:00
hugetlb_cgroup.c	hugetlb: add hugetlb.*.numa_stat file	2022-01-15 16:30:29 +02:00
hugetlb_vmemmap.c	mm/hugetlb_vmemmap: move comment block to Documentation/vm	2022-04-28 23:16:15 -07:00
hugetlb_vmemmap.h	mm: hugetlb_vmemmap: cleanup CONFIG_HUGETLB_PAGE_FREE_VMEMMAP*	2022-04-28 23:16:15 -07:00
hwpoison-inject.c	mm/hwpoison: avoid the impact of hwpoison_filter() return value on mce handler	2022-03-22 15:57:07 -07:00
init-mm.c	kernel/fork: Initialize mm's PASID	2022-02-14 19:51:47 +01:00
internal.h	mm: compaction: clean up comment for sched contention	2022-04-28 23:16:17 -07:00
interval_tree.c
io-mapping.c
ioremap.c
Kconfig	mm/uffd: PTE_MARKER_UFFD_WP	2022-05-13 07:20:09 -07:00
Kconfig.debug	mm: page table check	2022-01-15 16:30:28 +02:00
khugepaged.c	mm/rmap: drop "compound" parameter from page_add_new_anon_rmap()	2022-05-09 18:20:43 -07:00
kmemleak.c	mm: kmemleak: take a full lowmem check in kmemleak_*_phys()	2022-04-15 14:49:56 -07:00
ksm.c	mm: remember exclusively mapped anonymous pages with PG_anon_exclusive	2022-05-09 18:20:44 -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: submit multipage reads for SWP_FS_OPS swap-space	2022-05-09 18:20:49 -07:00
Makefile	mm: hugetlb_vmemmap: cleanup CONFIG_HUGETLB_PAGE_FREE_VMEMMAP*	2022-04-28 23:16:15 -07:00
mapping_dirty_helpers.c	mm: move tlb_flush_pending inline helpers to mm_inline.h	2022-01-15 16:30:27 +02:00
memblock.c	memblock: test suite and a small cleanup	2022-03-27 13:36:06 -07:00
memcontrol.c	mm: teach core mm about pte markers	2022-05-13 07:20:09 -07:00
memfd.c	memfd: fix F_SEAL_WRITE after shmem huge page allocated	2022-03-05 11:08:32 -08:00
memory-failure.c	mm: create new mm/swap.h header file	2022-05-09 18:20:47 -07:00
memory.c	mm/shmem: handle uffd-wp during fork()	2022-05-13 07:20:10 -07:00
memory_hotplug.c	mm/memory_hotplug: use pgprot_val to get value of pgprot	2022-05-13 07:20:07 -07:00
mempolicy.c	mm/mprotect: use mmu_gather	2022-05-13 07:20:05 -07:00
mempool.c
memremap.c	mm/page-flags: reuse PG_mappedtodisk as PG_anon_exclusive for PageAnon() pages	2022-05-09 18:20:44 -07:00
memtest.c
migrate.c	mm: remember exclusively mapped anonymous pages with PG_anon_exclusive	2022-05-09 18:20:44 -07:00
migrate_device.c	mm: remember exclusively mapped anonymous pages with PG_anon_exclusive	2022-05-09 18:20:44 -07:00
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.c	mmap locking API: fix missed mmap_sem references in comments	2022-05-13 07:20:07 -07:00
mmap_lock.c
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/shmem: allows file-back mem to be uffd wr-protected on thps	2022-05-13 07:20:10 -07:00
mremap.c	mm: hugetlb: considering PMD sharing when flushing cache/TLBs	2022-05-13 07:20:07 -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	oom_kill.c: futex: delay the OOM reaper to allow time for proper futex cleanup	2022-04-21 20:01:10 -07:00
page-writeback.c	mm: rework calculation of bdi_min_ratio in bdi_set_min_ratio	2022-04-28 23:15:57 -07:00
page_alloc.c	mm/page_alloc: cache the result of node_dirty_ok()	2022-05-13 07:20:09 -07:00
page_counter.c	mm/page_counter: remove an incorrect call to propagate_protected_usage()	2022-01-15 16:30:27 +02:00
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/rmap: Constify the rmap_walk_control argument	2022-03-21 13:01:35 -04:00
page_io.c	MM: handle THP in swap_*page_fs() - count_vm_events()	2022-05-09 18:20:49 -07:00
page_isolation.c	mm: wrap __find_buddy_pfn() with a necessary buddy page validation	2022-04-28 23:16:01 -07:00
page_owner.c	mm/page_owner.c: record tgid	2022-03-24 19:06:44 -07:00
page_poison.c
page_reporting.c
page_reporting.h
page_table_check.c	mm/page_table_check.c: use strtobool for param parsing	2022-03-22 15:57:11 -07:00
page_vma_mapped.c	mm: pvmw: add support for walking devmap pages	2022-04-28 23:16:10 -07:00
pagewalk.c
percpu-internal.h	mm: memcg/percpu: account extra objcg space to memory cgroups	2022-01-15 16:30:31 +02:00
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	bitmap patches for 5.17-rc1	2022-01-23 06:20:44 +02:00
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	readahead: Update comments	2022-04-01 14:40:42 -04:00
rmap.c	mm/shmem: persist uffd-wp bit across zapping for file-backed	2022-05-13 07:20:10 -07:00
rodata_test.c
secretmem.c	mm/secretmem: fix panic when growing a memfd_secret	2022-04-15 14:49:54 -07:00
shmem.c	mm/shmem: take care of UFFDIO_COPY_MODE_WP	2022-05-13 07:20:10 -07:00
shuffle.c
shuffle.h
slab.c	mm: make minimum slab alignment a runtime property	2022-05-13 07:20:07 -07:00
slab.h	mm, kfence: support kmem_dump_obj() for KFENCE objects	2022-04-15 14:49:55 -07:00
slab_common.c	mm: make minimum slab alignment a runtime property	2022-05-13 07:20:07 -07:00
slob.c	mm: make minimum slab alignment a runtime property	2022-05-13 07:20:07 -07:00
slub.c	mm, kfence: support kmem_dump_obj() for KFENCE objects	2022-04-15 14:49:55 -07:00
sparse-vmemmap.c	mm/sparse-vmemmap: improve memory savings for compound devmaps	2022-04-28 23:16:16 -07:00
sparse.c	mm/sparse-vmemmap: add a pgmap argument to section activation	2022-04-28 23:16:15 -07:00
swap.c	mm/munlock: protect the per-CPU pagevec by a local_lock_t	2022-04-01 11:46:09 -07:00
swap.h	mm: submit multipage write for SWP_FS_OPS swap-space	2022-05-09 18:20:49 -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
swap_state.c	mm: submit multipage reads for SWP_FS_OPS swap-space	2022-05-09 18:20:49 -07:00
swapfile.c	mm: introduce ->swap_rw and use it for reads from SWP_FS_OPS swap-space	2022-05-09 18:20:48 -07:00
truncate.c	Filesystem folio changes for 5.18	2022-03-22 18:26:56 -07:00
usercopy.c	Merge branch 'akpm' (patches from Andrew)	2022-03-22 16:11:53 -07:00
userfaultfd.c	mm/hugetlb: take care of UFFDIO_COPY_MODE_WP	2022-05-13 07:20:10 -07:00
util.c	mm: create new mm/swap.h header file	2022-05-09 18:20:47 -07:00
vmacache.c
vmalloc.c	vmap(): don't allow invalid pages	2022-04-28 23:16:00 -07:00
vmpressure.c
vmscan.c	mm: submit multipage write for SWP_FS_OPS swap-space	2022-05-09 18:20:49 -07:00
vmstat.c	mm/vmstat: add events for ksm cow	2022-04-28 23:16:16 -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: remove unneeded PAGE_HEADLESS check in free_handle()	2022-04-28 23:16:06 -07:00
zbud.c
zpool.c	zpool: remove the list of pools_head	2022-01-15 16:30:31 +02:00
zsmalloc.c	zsmalloc: replace get_cpu_var with local_lock	2022-01-22 08:33:37 +02:00
zswap.c	mm: create new mm/swap.h header file	2022-05-09 18:20:47 -07:00