Mike Kravetz e700898fa0 hugetlb: really allocate vma lock for all sharable vmas ... Commit bbff39cc6c ("hugetlb: allocate vma lock for all sharable vmas") removed the pmd sharable checks in the vma lock helper routines. However, it left the functional version of helper routines behind #ifdef CONFIG_ARCH_WANT_HUGE_PMD_SHARE. Therefore, the vma lock is not being used for sharable vmas on architectures that do not support pmd sharing. On these architectures, a potential fault/truncation race is exposed that could leave pages in a hugetlb file past i_size until the file is removed. Move the functional vma lock helpers outside the ifdef, and remove the non-functional stubs. Since the vma lock is not just for pmd sharing, rename the routine __vma_shareable_flags_pmd. Link: https://lkml.kernel.org/r/20221212235042.178355-1-mike.kravetz@oracle.com Fixes: bbff39cc6c ("hugetlb: allocate vma lock for all sharable vmas") Signed-off-by: Mike Kravetz <mike.kravetz@oracle.com> Reviewed-by: Miaohe Lin <linmiaohe@huawei.com> Cc: "Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com> Cc: David Hildenbrand <david@redhat.com> Cc: James Houghton <jthoughton@google.com> Cc: Mina Almasry <almasrymina@google.com> Cc: Muchun Song <songmuchun@bytedance.com> Cc: Naoya Horiguchi <naoya.horiguchi@linux.dev> Cc: Peter Xu <peterx@redhat.com> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>		2022-12-21 14:31:52 -08:00
..
damon	mm/damon: use kstrtobool() instead of strtobool()	2022-11-30 15:58:45 -08:00
kasan	hardening updates for v6.2-rc1	2022-12-14 12:20:00 -08:00
kfence	hardening updates for v6.2-rc1	2022-12-14 12:20:00 -08:00
kmsan	kmsan: export kmsan_handle_urb	2022-12-21 14:31:52 -08:00
Kconfig	New Feature:	2022-12-17 14:06:53 -06:00
Kconfig.debug	…
Makefile	…
backing-dev.c	mm: add /sys/class/bdi/<bdi>/min_ratio_fine knob	2022-11-30 15:59:06 -08:00
balloon_compaction.c	…
bootmem_info.c	…
cma.c	…
cma.h	…
cma_debug.c	…
cma_sysfs.c	…
compaction.c	mm, compaction: fix fast_isolate_around() to stay within boundaries	2022-11-30 15:59:07 -08:00
debug.c	mm,thp,rmap: simplify compound page mapcount handling	2022-11-30 15:58:46 -08:00
debug_page_ref.c	…
debug_vm_pgtable.c	mm: remove unused savedwrite infrastructure	2022-11-30 15:58:49 -08:00
dmapool.c	…
early_ioremap.c	…
fadvise.c	mm/fadvise: use LLONG_MAX instead of -1 for eof	2022-12-11 18:12:11 -08:00
failslab.c	…
filemap.c	filemap: convert replace_page_cache_page() to replace_page_cache_folio()	2022-12-11 18:12:12 -08:00
folio-compat.c	folio-compat: remove lru_cache_add()	2022-12-11 18:12:13 -08:00
frontswap.c	…
gup.c	New Feature:	2022-12-17 14:06:53 -06:00
gup_test.c	mm/gup_test: free memory allocated via kvcalloc() using kvfree()	2022-12-15 16:37:48 -08:00
gup_test.h	…
highmem.c	…
hmm.c	mm: Remove pointless barrier() after pmdp_get_lockless()	2022-12-15 10:37:27 -08:00
huge_memory.c	ARM64:	2022-12-15 11:12:21 -08:00
hugetlb.c	hugetlb: really allocate vma lock for all sharable vmas	2022-12-21 14:31:52 -08:00
hugetlb_cgroup.c	mm/hugeltb_cgroup: convert hugetlb_cgroup_commit_charge*() to folios	2022-11-30 15:58:43 -08:00
hugetlb_vmemmap.c	mm/hugetlb_vmemmap: remap head page to newly allocated page	2022-11-30 15:58:47 -08:00
hugetlb_vmemmap.h	…
hwpoison-inject.c	…
init-mm.c	…
internal.h	…
interval_tree.c	…
io-mapping.c	…
ioremap.c	…
khugepaged.c	New Feature:	2022-12-17 14:06:53 -06:00
kmemleak.c	mm/kmemleak: use %pK to display kernel pointers in backtrace	2022-12-15 16:37:49 -08:00
ksm.c	mm/ksm: convert break_ksm() to use walk_page_range_vma()	2022-12-11 18:12:09 -08:00
list_lru.c	…
maccess.c	…
madvise.c	MM patches for 6.2-rc1.	2022-12-13 19:29:45 -08:00
mapping_dirty_helpers.c	mm: Rename pmd_read_atomic()	2022-12-15 10:37:27 -08:00
memblock.c	…
memcontrol.c	mm: memcg: fix swapcached stat accounting	2022-12-11 18:12:20 -08:00
memfd.c	…
memory-failure.c	mm/memory-failure.c: cleanup in unpoison_memory	2022-11-30 15:59:08 -08:00
memory-tiers.c	mm/demotion: fix NULL vs IS_ERR checking in memory_tier_init	2022-11-30 15:58:54 -08:00
memory.c	mm: remove VM_FAULT_WRITE	2022-12-11 18:12:08 -08:00
memory_hotplug.c	…
mempolicy.c	mm/mempolicy: fix memory leak in set_mempolicy_home_node system call	2022-12-21 14:31:51 -08:00
mempool.c	mempool: do not use ksize() for poisoning	2022-11-30 15:58:41 -08:00
memremap.c	…
memtest.c	…
migrate.c	MM patches for 6.2-rc1.	2022-12-13 19:29:45 -08:00
migrate_device.c	…
mincore.c	…
mlock.c	…
mm_init.c	…
mm_slot.h	…
mmap.c	MM patches for 6.2-rc1.	2022-12-13 19:29:45 -08:00
mmap_lock.c	…
mmu_gather.c	mm: mmu_gather: allow more than one batch of delayed rmaps	2022-12-11 18:12:21 -08:00
mmu_notifier.c	…
mmzone.c	…
mprotect.c	New Feature:	2022-12-17 14:06:53 -06:00
mremap.c	mm, mremap: fix mremap() expanding vma with addr inside vma	2022-12-21 14:31:51 -08:00
msync.c	…
nommu.c	…
oom_kill.c	…
page-writeback.c	mm: add bdi_set_min_ratio_no_scale() function	2022-11-30 15:59:06 -08:00
page_alloc.c	mm/page_alloc: update comments in __free_pages_ok()	2022-12-11 18:12:17 -08:00
page_counter.c	…
page_ext.c	…
page_idle.c	…
page_io.c	…
page_isolation.c	…
page_owner.c	…
page_poison.c	…
page_reporting.c	…
page_reporting.h	…
page_table_check.c	mm: use kstrtobool() instead of strtobool()	2022-11-30 15:58:45 -08:00
page_vma_mapped.c	…
pagewalk.c	mm/pagewalk: add walk_page_range_vma()	2022-12-11 18:12:08 -08:00
percpu-internal.h	…
percpu-km.c	…
percpu-stats.c	…
percpu-vm.c	…
percpu.c	…
pgalloc-track.h	…
pgtable-generic.c	…
process_vm_access.c	…
ptdump.c	…
readahead.c	…
rmap.c	mm,thp,rmap: fix races between updates of subpages_mapcount	2022-12-11 18:12:20 -08:00
rodata_test.c	…
secretmem.c	…
shmem.c	MM patches for 6.2-rc1.	2022-12-13 19:29:45 -08:00
shrinker_debug.c	…
shuffle.c	…
shuffle.h	…
slab.c	…
slab.h	Merge branch 'slub-tiny-v1r6' into slab/for-next	2022-12-01 00:14:00 +01:00
slab_common.c	hardening updates for v6.2-rc1	2022-12-14 12:20:00 -08:00
slob.c	…
slub.c	MM patches for 6.2-rc1.	2022-12-13 19:29:45 -08:00
sparse-vmemmap.c	mm/sparse-vmemmap: generalise vmemmap_populate_hugepages()	2022-12-11 18:12:12 -08:00
sparse.c	…
swap.c	mm: teach release_pages() to take an array of encoded page pointers too	2022-11-30 15:58:50 -08:00
swap.h	…
swap_cgroup.c	…
swap_slots.c	…
swap_state.c	mm: mmu_gather: prepare to gather encoded page pointers with flags	2022-11-30 15:58:50 -08:00
swapfile.c	MM patches for 6.2-rc1.	2022-12-13 19:29:45 -08:00
truncate.c	folio-compat: remove lru_cache_add()	2022-12-11 18:12:13 -08:00
usercopy.c	mm: use kstrtobool() instead of strtobool()	2022-11-30 15:58:45 -08:00
userfaultfd.c	New Feature:	2022-12-17 14:06:53 -06:00
util.c	mm,thp,rmap: simplify compound page mapcount handling	2022-11-30 15:58:46 -08:00
vmalloc.c	…
vmpressure.c	…
vmscan.c	New Feature:	2022-12-17 14:06:53 -06:00
vmstat.c	mm: vmscan: split khugepaged stats from direct reclaim stats	2022-11-30 15:58:41 -08:00
workingset.c	folio-compat: remove lru_cache_add()	2022-12-11 18:12:13 -08:00
z3fold.c	zpool: clean out dead code	2022-12-11 18:12:10 -08:00
zbud.c	zpool: clean out dead code	2022-12-11 18:12:10 -08:00
zpool.c	zpool: clean out dead code	2022-12-11 18:12:10 -08:00
zsmalloc.c	zsmalloc: implement writeback mechanism for zsmalloc	2022-12-11 18:12:10 -08:00
zswap.c	zswap: fix writeback lock ordering for zsmalloc	2022-12-11 18:12:09 -08:00