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Vishal Verma 42d9358252 mm/memory_hotplug: export mhp_supports_memmap_on_memory() 
In preparation for adding sysfs ABI to toggle memmap_on_memory semantics
for drivers adding memory, export the mhp_supports_memmap_on_memory()
helper. This allows drivers to check if memmap_on_memory support is
available before trying to request it, and display an appropriate
message if it isn't available. As part of this, remove the size argument
to this - with recent updates to allow memmap_on_memory for larger
ranges, and the internal splitting of altmaps into respective memory
blocks, the size argument is meaningless.

[akpm@linux-foundation.org: fix build]
Link: https://lkml.kernel.org/r/20240124-vv-dax_abi-v7-4-20d16cb8d23d@intel.com
Signed-off-by: Vishal Verma <vishal.l.verma@intel.com>
Acked-by: David Hildenbrand <david@redhat.com>
Suggested-by: David Hildenbrand <david@redhat.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Cc: Li Zhijian <lizhijian@fujitsu.com>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Oscar Salvador <osalvador@suse.de>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: Dave Jiang <dave.jiang@intel.com>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Huang Ying <ying.huang@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
 		2024-02-22 10:24:40 -08:00
..
damon mm/damon/lru_sort: fix quota status loss due to online tunings 2024-02-20 14:20:50 -08:00
kasan kasan: guard release_free_meta() shadow access with kasan_arch_is_ready() 2024-02-20 14:20:50 -08:00
kfence
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kmsan mm, treewide: rename MAX_ORDER to MAX_PAGE_ORDER 2024-01-08 15:27:15 -08:00
Kconfig IOMMU Updates for Linux v6.8 2024-01-18 15:16:57 -08:00
Kconfig.debug
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Makefile
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backing-dev.c blk-wbt: Fix detection of dirty-throttled tasks 2024-02-06 09:44:03 -07:00
balloon_compaction.c
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bootmem_info.c
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cma.c mm/cma: fix placement of trace_cma_alloc_start/finish 2024-02-21 16:00:01 -08:00
cma.h
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cma_debug.c
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cma_sysfs.c
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compaction.c Generic: 2024-01-17 13:03:37 -08:00
debug.c
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debug_page_alloc.c mm, treewide: rename MAX_ORDER to MAX_PAGE_ORDER 2024-01-08 15:27:15 -08:00
debug_page_ref.c
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debug_vm_pgtable.c mm, treewide: rename MAX_ORDER to MAX_PAGE_ORDER 2024-01-08 15:27:15 -08:00
dmapool.c
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dmapool_test.c
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early_ioremap.c
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fadvise.c
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fail_page_alloc.c
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failslab.c
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filemap.c mm: add pfn_swap_entry_folio() 2024-02-21 16:00:03 -08:00
folio-compat.c
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gup.c mm: convert page_try_share_anon_rmap() to folio_try_share_anon_rmap_[pte|pmd]() 2023-12-29 11:58:56 -08:00
gup_test.c
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gup_test.h
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highmem.c x86/kexec: use pr_err() instead of kexec_dprintk() when an error occurs 2023-12-29 12:22:28 -08:00
hmm.c
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huge_memory.c mm: convert mm_counter_file() to take a folio 2024-02-21 16:00:04 -08:00
hugetlb.c Many singleton patches against the MM code. The patch series which 2024-01-09 11:18:47 -08:00
hugetlb_cgroup.c
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hugetlb_vmemmap.c
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hugetlb_vmemmap.h
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hwpoison-inject.c
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init-mm.c
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internal.h mm/mmap: introduce vma_set_range() 2024-02-22 10:24:40 -08:00
interval_tree.c
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io-mapping.c
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ioremap.c
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khugepaged.c mm: convert mm_counter_file() to take a folio 2024-02-21 16:00:04 -08:00
kmemleak.c
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ksm.c mm: convert page_try_share_anon_rmap() to folio_try_share_anon_rmap_[pte|pmd]() 2023-12-29 11:58:56 -08:00
list_lru.c mm: list_lru: disable memcg_aware when cgroup.memory is set to "nokmem" 2024-02-21 16:00:02 -08:00
maccess.c
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madvise.c mm/madvise: don't forget to leave lazy MMU mode in madvise_cold_or_pageout_pte_range() 2024-02-07 21:20:35 -08:00
mapping_dirty_helpers.c
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memblock.c mm/memblock: add MEMBLOCK_RSRV_NOINIT into flagname[] array 2024-02-20 14:20:49 -08:00
memcontrol.c mm: writeback: ratelimit stat flush from mem_cgroup_wb_stats 2024-02-22 10:24:38 -08:00
memfd.c
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memory-failure.c mm/memory-failure: fix crash in split_huge_page_to_list from soft_offline_page 2024-02-07 21:20:34 -08:00
memory-tiers.c
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memory.c mm: memory: move mem_cgroup_charge() into alloc_anon_folio() 2024-02-22 10:24:38 -08:00
memory_hotplug.c mm/memory_hotplug: export mhp_supports_memmap_on_memory() 2024-02-22 10:24:40 -08:00
mempolicy.c mempolicy: clean up minor dead code in queue_pages_test_walk() 2024-02-22 10:24:39 -08:00
mempool.c Many singleton patches against the MM code. The patch series which 2024-01-09 11:18:47 -08:00
memremap.c
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memtest.c
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migrate.c Generic: 2024-01-17 13:03:37 -08:00
migrate_device.c mm: convert page_try_share_anon_rmap() to folio_try_share_anon_rmap_[pte|pmd]() 2023-12-29 11:58:56 -08:00
mincore.c
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mlock.c
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mm_init.c efi: disable mirror feature during crashkernel 2024-01-12 15:20:47 -08:00
mm_slot.h
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mmap.c mm/mmap: introduce vma_set_range() 2024-02-22 10:24:40 -08:00
mmap_lock.c
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mmu_gather.c
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mmu_notifier.c
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mmzone.c
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mprotect.c mprotect: use pfn_swap_entry_folio 2024-02-21 16:00:03 -08:00
mremap.c
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msync.c
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nommu.c
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oom_kill.c
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page-writeback.c block-6.8-2024-02-10 2024-02-10 08:02:48 -08:00
page_alloc.c Networking changes for 6.8. 2024-01-11 10:07:29 -08:00
page_counter.c
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page_ext.c
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page_idle.c
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page_io.c zswap: memcontrol: implement zswap writeback disabling 2023-12-29 20:22:11 -08:00
page_isolation.c mm, treewide: rename MAX_ORDER to MAX_PAGE_ORDER 2024-01-08 15:27:15 -08:00
page_owner.c mm, treewide: rename MAX_ORDER to MAX_PAGE_ORDER 2024-01-08 15:27:15 -08:00
page_poison.c
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page_reporting.c mm, treewide: rename MAX_ORDER to MAX_PAGE_ORDER 2024-01-08 15:27:15 -08:00
page_reporting.h
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page_table_check.c
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page_vma_mapped.c
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pagewalk.c
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percpu-internal.h
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percpu-km.c
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percpu-stats.c
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percpu-vm.c
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percpu.c
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pgalloc-track.h
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pgtable-generic.c
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process_vm_access.c
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ptdump.c
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readahead.c readahead: use ilog2 instead of a while loop in page_cache_ra_order() 2024-02-22 10:24:38 -08:00
rmap.c mm: convert mm_counter_file() to take a folio 2024-02-21 16:00:04 -08:00
rodata_test.c
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secretmem.c
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shmem.c header cleanups for 6.8 2024-01-10 16:43:55 -08:00
shmem_quota.c
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show_mem.c mm, treewide: introduce NR_PAGE_ORDERS 2024-01-08 15:27:15 -08:00
shrinker.c mm: shrinker: use kvzalloc_node() from expand_one_shrinker_info() 2024-01-05 09:58:32 -08:00
shrinker_debug.c
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shuffle.c
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shuffle.h mm, treewide: rename MAX_ORDER to MAX_PAGE_ORDER 2024-01-08 15:27:15 -08:00
slab.h
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slab_common.c slub: use a folio in __kmalloc_large_node 2024-01-05 10:17:46 -08:00
slub.c Many singleton patches against the MM code. The patch series which 2024-01-09 11:18:47 -08:00
sparse-vmemmap.c
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sparse.c mm/memory_hotplug: introduce MEM_PREPARE_ONLINE/MEM_FINISH_OFFLINE notifiers 2024-02-21 16:00:01 -08:00
swap.c
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swap.h mm/swap: fix race when skipping swapcache 2024-02-20 14:20:48 -08:00
swap_cgroup.c
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swap_slots.c
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swap_state.c mm/swap_state: update zswap LRU's protection range with the folio locked 2024-02-20 14:20:48 -08:00
swapfile.c mm: swap: enforce updating inuse_pages at the end of swap_range_free() 2024-02-22 10:24:39 -08:00
truncate.c
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usercopy.c
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userfaultfd.c mm: convert mm_counter() to take a folio 2024-02-21 16:00:03 -08:00
util.c
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vmalloc.c
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vmpressure.c
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vmscan.c Many singleton patches against the MM code. The patch series which 2024-01-09 11:18:47 -08:00
vmstat.c mm, treewide: rename MAX_ORDER to MAX_PAGE_ORDER 2024-01-08 15:27:15 -08:00
workingset.c mm: ratelimit stat flush from workingset shrinker 2024-01-05 10:17:45 -08:00
z3fold.c
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zbud.c
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zpool.c
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zsmalloc.c mm: zsmalloc: return -ENOSPC rather than -EINVAL in zs_malloc while size is too large 2024-01-05 10:17:47 -08:00
zswap.c mm: zswap: remove unused tree argument in zswap_entry_put() 2024-02-22 10:24:40 -08:00