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David Hildenbrand 0cf459866a mm/gup: use gup_can_follow_protnone() also in GUP-fast 
There seems to be no reason why FOLL_FORCE during GUP-fast would have to
fallback to the slow path when stumbling over a PROT_NONE mapped page.  We
only have to trigger hinting faults in case FOLL_FORCE is not set, and any
kind of fault handling naturally happens from the slow path -- where NUMA
hinting accounting/handling would be performed.

Note that the comment regarding THP migration is outdated: commit
2b4847e73004 ("mm: numa: serialise parallel get_user_page against THP
migration") described that this was required for THP due to lack of PMD
migration entries.  Nowadays, we do have proper PMD migration entries in
place -- see set_pmd_migration_entry(), which does a proper
pmdp_invalidate() when placing the migration entry.

So let's just reuse gup_can_follow_protnone() here to make it consistent
and drop the somewhat outdated comments.

Link: https://lkml.kernel.org/r/20220825164659.89824-3-david@redhat.com
Signed-off-by: David Hildenbrand <david@redhat.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Jason Gunthorpe <jgg@nvidia.com>
Cc: John Hubbard <jhubbard@nvidia.com>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Mel Gorman <mgorman@suse.de>
Cc: Peter Xu <peterx@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2022-09-26 19:46:28 -07:00
..
damon
damon: convert __damon_va_three_regions to use the VMA iterator
2022-09-26 19:46:16 -07:00
kasan
- The usual batches of cleanups from Baoquan He, Muchun Song, Miaohe
2022-08-05 16:32:45 -07:00
kfence
kfence: add sysfs interface to disable kfence for selected slabs.
2022-09-11 20:25:52 -07:00
backing-dev.c
mm: backing-dev: Remove the unneeded result variable
2022-09-11 20:26:02 -07:00
balloon_compaction.c
mm: Convert all PageMovable users to movable_operations
2022-08-02 12:34:03 -04:00
bootmem_info.c
bootmem: remove the vmemmap pages from kmemleak in put_page_bootmem
2022-08-28 14:02:45 -07:00
cma_debug.c
mm/cma_debug: show complete cma name in debugfs directories
2022-09-11 20:25:50 -07:00
cma_sysfs.c
mm: cma: support sysfs
2021-05-05 11:27:24 -07:00
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: fix null-ptr-deref in kswapd_is_running()
2022-09-11 20:26:04 -07:00
debug_page_ref.c
…
debug_vm_pgtable.c
docs: rename Documentation/vm to Documentation/mm
2022-06-27 12:52:53 -07:00
debug.c
mm: remove the vma linked list
2022-09-26 19:46:26 -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
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
delayacct: support re-entrance detection of thrashing accounting
2022-09-26 19:46:07 -07:00
folio-compat.c
mm/folio-compat: Remove migration compatibility functions
2022-08-02 12:34:04 -04:00
frontswap.c
frontswap: don't call ->init if no ops are registered
2022-09-26 12:14:34 -07:00
gup_test.c
mm: rename is_pinnable_page() to is_longterm_pinnable_page()
2022-07-17 17:14:27 -07:00
gup_test.h
selftests/vm: gup_test: fix test flag
2021-05-05 11:27:26 -07:00
gup.c
mm/gup: use gup_can_follow_protnone() also in GUP-fast
2022-09-26 19:46:28 -07:00
highmem.c
- The usual batches of cleanups from Baoquan He, Muchun Song, Miaohe
2022-08-05 16:32:45 -07:00
hmm.c
mm/swap: add swp_offset_pfn() to fetch PFN from swap entry
2022-09-26 19:46:05 -07:00
huge_memory.c
mm/gup: replace FOLL_NUMA by gup_can_follow_protnone()
2022-09-26 19:46:28 -07:00
hugetlb_cgroup.c
hugetlb_cgroup: use helper for_each_hstate and hstate_index
2022-09-11 20:25:53 -07:00
hugetlb_vmemmap.c
mm: hugetlb_vmemmap: simplify reset_struct_pages()
2022-09-11 20:25:58 -07:00
hugetlb_vmemmap.h
mm: hugetlb_vmemmap: improve hugetlb_vmemmap code readability
2022-08-08 18:06:43 -07:00
hugetlb.c
Merge branch 'mm-hotfixes-stable' into mm-stable
2022-09-26 13:13:15 -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
mm: remove rb tree.
2022-09-26 19:46:16 -07:00
internal.h
mm: remove the vma linked list
2022-09-26 19:46:26 -07:00
interval_tree.c
mm/interval_tree: add comments to improve code readability
2021-04-30 11:20:38 -07:00
io-mapping.c
mm: add a io_mapping_map_user helper
2021-04-30 11:20:39 -07:00
ioremap.c
mm: ioremap: Add ioremap/iounmap_allowed()
2022-06-27 12:22:31 +01:00
Kconfig
mm: multi-gen LRU: admin guide
2022-09-26 19:46:10 -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: stop using vma linked list
2022-09-26 19:46:23 -07:00
kmemleak.c
mm/kmemleak: make create_object return void
2022-09-11 20:26:10 -07:00
ksm.c
mm: fix the handling Non-LRU pages returned by follow_page
2022-09-26 19:46:28 -07:00
list_lru.c
mm: kmem: make mem_cgroup_from_obj() vmalloc()-safe
2022-06-16 19:48:31 -07:00
maccess.c
asm-generic updates for 5.18
2022-03-23 18:03:08 -07:00
madvise.c
mm/madvise: use vma_find() instead of vma linked list
2022-09-26 19:46:23 -07:00
Makefile
mm: remove vmacache
2022-09-26 19:46:18 -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 updates for v5.20
2022-08-09 09:48:30 -07:00
memcontrol.c
mm/memcontrol: stop using mm->highest_vm_end
2022-09-26 19:46:23 -07:00
memfd.c
memfd: fix F_SEAL_WRITE after shmem huge page allocated
2022-03-05 11:08:32 -08:00
memory_hotplug.c
mm: fix null-ptr-deref in kswapd_is_running()
2022-09-11 20:26:04 -07:00
memory-failure.c
mm/swap: add swp_offset_pfn() to fetch PFN from swap entry
2022-09-26 19:46:05 -07:00
memory-tiers.c
mm/demotion: expose memory tier details via sysfs
2022-09-26 19:46:13 -07:00
memory.c
mm: remove the vma linked list
2022-09-26 19:46:26 -07:00
mempolicy.c
mm/mempolicy: use vma iterator & maple state instead of vma linked list
2022-09-26 19:46:24 -07:00
mempool.c
mm/mempool: use might_alloc()
2022-06-16 19:48:30 -07:00
memremap.c
mm/mremap_pages: save a few cycles in get_dev_pagemap()
2022-09-11 20:26:11 -07:00
memtest.c
…
migrate_device.c
mm: remember young/dirty bit for page migrations
2022-09-26 19:46:05 -07:00
migrate.c
mm: fix the handling Non-LRU pages returned by follow_page
2022-09-26 19:46:28 -07:00
mincore.c
mm: teach core mm about pte markers
2022-05-13 07:20:09 -07:00
mlock.c
mm/mlock: drop dead code in count_mm_mlocked_page_nr()
2022-09-26 19:46:27 -07:00
mm_init.c
mm: multi-gen LRU: groundwork
2022-09-26 19:46:09 -07:00
mmap_lock.c
mm: mmap_lock: fix disabling preemption directly
2021-07-23 17:43:28 -07:00
mmap.c
mm: refactor of vma_merge()
2022-09-26 19:46:27 -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
mm: multi-gen LRU: groundwork
2022-09-26 19:46:09 -07:00
mprotect.c
mm/mprotect: use maple tree navigation instead of VMA linked list
2022-09-26 19:46:24 -07:00
mremap.c
mm: add merging after mremap resize
2022-09-26 19:46:28 -07:00
msync.c
mm/msync: use vma_find() instead of vma linked list
2022-09-26 19:46:25 -07:00
nommu.c
mm: remove the vma linked list
2022-09-26 19:46:26 -07:00
oom_kill.c
mm: delete unused MMF_OOM_VICTIM flag
2022-09-26 19:46:27 -07:00
page_alloc.c
Merge branch 'mm-hotfixes-stable' into mm-stable
2022-09-26 13:13:15 -07:00
page_counter.c
mm: page_counter: remove unneeded atomic ops for low/min
2022-09-11 20:26:01 -07:00
page_ext.c
page_ext: introduce boot parameter 'early_page_ext'
2022-09-11 20:26:02 -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
mm/page_io: count submission time as thrashing delay for delayacct
2022-09-26 19:46:08 -07:00
page_isolation.c
mm/page_isolation: fix isolate_single_pageblock() isolation behavior
2022-09-26 12:14:34 -07:00
page_owner.c
mm/page_owner.c: add llseek for page_owner
2022-09-11 20:25:59 -07:00
page_poison.c
mm: page_poison: print page info when corruption is caught
2021-04-30 11:20:36 -07:00
page_reporting.c
mm/page_reporting: allow driver to specify reporting order
2021-06-29 10:53:47 -07:00
page_reporting.h
mm/page_reporting: export reporting order as module parameter
2021-06-29 10:53:47 -07:00
page_table_check.c
mm: fix use-after free of page_ext after race with memory-offline
2022-09-11 20:25:57 -07:00
page_vma_mapped.c
mm/swap: add swp_offset_pfn() to fetch PFN from swap entry
2022-09-26 19:46:05 -07:00
page-writeback.c
writeback: avoid use-after-free after removing device
2022-08-28 14:02:43 -07:00
pagewalk.c
mm/pagewalk: use vma_find() instead of vma linked list
2022-09-26 19:46:25 -07:00
percpu-internal.h
percpu: improve percpu_alloc_percpu event trace
2022-05-13 07:20:18 -07:00
percpu-km.c
percpu: flush tlb in pcpu_reclaim_populated()
2021-07-04 18:30:17 +00:00
percpu-stats.c
mm: use vmalloc_array and vcalloc for array allocations
2022-03-08 09:30:46 -05:00
percpu-vm.c
percpu: flush tlb in pcpu_reclaim_populated()
2021-07-04 18:30:17 +00:00
percpu.c
mm: percpu: use kmemleak_ignore_phys() instead of kmemleak_free()
2022-07-17 17:14:47 -07:00
pgalloc-track.h
mm: fix typos in comments
2021-05-07 00:26:35 -07:00
pgtable-generic.c
mm: avoid unnecessary flush on change_huge_pmd()
2022-05-13 07:20:05 -07:00
process_vm_access.c
mm/process_vm_access.c: remove duplicate include
2021-05-05 11:27:27 -07:00
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: multi-gen LRU: exploit locality in rmap
2022-09-26 19:46:09 -07:00
rodata_test.c
…
secretmem.c
mm: fix dereferencing possible ERR_PTR
2022-09-11 16:22:31 -07:00
shmem.c
shmem: update folio if shmem_replace_page() updates the page
2022-08-28 14:02:43 -07:00
shrinker_debug.c
mm: shrinkers: fix double kfree on shrinker name
2022-07-29 18:07:13 -07:00
shuffle.c
…
shuffle.h
mm/shuffle: fix section mismatch warning
2021-05-22 15:09:07 -10:00
slab_common.c
mm/slab_common: move generic bulk alloc/free functions to SLOB
2022-07-20 13:30:12 +02:00
slab.c
- The usual batches of cleanups from Baoquan He, Muchun Song, Miaohe
2022-08-05 16:32:45 -07:00
slab.h
mm/slab_common: move generic bulk alloc/free functions to SLOB
2022-07-20 13:30:12 +02:00
slob.c
mm/slab_common: move generic bulk alloc/free functions to SLOB
2022-07-20 13:30:12 +02:00
slub.c
kfence: add sysfs interface to disable kfence for selected slabs.
2022-09-11 20:25:52 -07:00
sparse-vmemmap.c
mm: hugetlb_vmemmap: move vmemmap code related to HugeTLB to hugetlb_vmemmap.c
2022-08-08 18:06:42 -07:00
sparse.c
mm: memory_hotplug: enumerate all supported section flags
2022-07-03 18:08:49 -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
arm64: enable THP_SWAP for arm64
2022-07-20 10:52:40 +01:00
swap_state.c
mm: fix VM_BUG_ON in __delete_from_swap_cache()
2022-09-11 16:22:31 -07:00
swap.c
mm: multi-gen LRU: exploit locality in rmap
2022-09-26 19:46:09 -07:00
swap.h
mm/swap: remove the end_write_func argument to __swap_writepage
2022-09-11 20:25:50 -07:00
swapfile.c
mm/swapfile: use vma iterator instead of vma linked list
2022-09-26 19:46:25 -07:00
truncate.c
mm: Remove __delete_from_page_cache()
2022-06-29 08:51:05 -04:00
usercopy.c
usercopy: use unsigned long instead of uintptr_t
2022-07-01 17:03:38 -07:00
userfaultfd.c
mm/uffd: reset write protection when unregister with wp-mode
2022-08-20 15:17:45 -07:00
util.c
mm: remove the vma linked list
2022-09-26 19:46:26 -07:00
vmalloc.c
mm/vmalloc: extend find_vmap_lowest_match_check with extra arguments
2022-09-11 20:26:05 -07:00
vmpressure.c
mm/vmpressure: fix data-race with memcg->socket_pressure
2021-11-06 13:30:40 -07:00
vmscan.c
mm/vmscan: use vma iterator instead of vm_next
2022-09-26 19:46:26 -07:00
vmstat.c
mm: remove vmacache
2022-09-26 19:46:18 -07:00
workingset.c
mm: multi-gen LRU: minimal implementation
2022-09-26 19:46:09 -07:00
z3fold.c
mm: Convert all PageMovable users to movable_operations
2022-08-02 12:34:03 -04:00
zbud.c
mm/zbud: add kerneldoc fields for zbud_pool
2021-07-01 11:06:03 -07:00
zpool.c
zpool: remove the list of pools_head
2022-01-15 16:30:31 +02:00
zsmalloc.c
zsmalloc: zs_object_copy: replace email link to doc
2022-09-11 20:25:56 -07:00
zswap.c
mm/swap: remove the end_write_func argument to __swap_writepage
2022-09-11 20:25:50 -07:00