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linux-yocto/mm
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Hugh Dickins 895fab2a42 mm: folio_may_be_lru_cached() unless folio_test_large() 
[ Upstream commit 2da6de30e60dd9bb14600eff1cc99df2fa2ddae3 ]

mm/swap.c and mm/mlock.c agree to drain any per-CPU batch as soon as a
large folio is added: so collect_longterm_unpinnable_folios() just wastes
effort when calling lru_add_drain[_all]() on a large folio.

But although there is good reason not to batch up PMD-sized folios, we
might well benefit from batching a small number of low-order mTHPs (though
unclear how that "small number" limitation will be implemented).

So ask if folio_may_be_lru_cached() rather than !folio_test_large(), to
insulate those particular checks from future change.  Name preferred to
"folio_is_batchable" because large folios can well be put on a batch: it's
just the per-CPU LRU caches, drained much later, which need care.

Marked for stable, to counter the increase in lru_add_drain_all()s from
"mm/gup: check ref_count instead of lru before migration".

Link: https://lkml.kernel.org/r/57d2eaf8-3607-f318-e0c5-be02dce61ad0@google.com
Fixes: 9a4e9f3b2d ("mm: update get_user_pages_longterm to migrate pages allocated from CMA region")
Signed-off-by: Hugh Dickins <hughd@google.com>
Suggested-by: David Hildenbrand <david@redhat.com>
Acked-by: David Hildenbrand <david@redhat.com>
Cc: "Aneesh Kumar K.V" <aneesh.kumar@kernel.org>
Cc: Axel Rasmussen <axelrasmussen@google.com>
Cc: Chris Li <chrisl@kernel.org>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: Jason Gunthorpe <jgg@ziepe.ca>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: John Hubbard <jhubbard@nvidia.com>
Cc: Keir Fraser <keirf@google.com>
Cc: Konstantin Khlebnikov <koct9i@gmail.com>
Cc: Li Zhe <lizhe.67@bytedance.com>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: Peter Xu <peterx@redhat.com>
Cc: Rik van Riel <riel@surriel.com>
Cc: Shivank Garg <shivankg@amd.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Wei Xu <weixugc@google.com>
Cc: Will Deacon <will@kernel.org>
Cc: yangge <yangge1116@126.com>
Cc: Yuanchu Xie <yuanchu@google.com>
Cc: Yu Zhao <yuzhao@google.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
[ Clean cherry-pick now into this tree ]
Signed-off-by: Hugh Dickins <hughd@google.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2025-10-02 13:44:11 +02:00
..
damon mm/damon/reclaim: avoid divide-by-zero in damon_reclaim_apply_parameters() 2025-09-19 16:35:47 +02:00
kasan mm: introduce and use {pgd,p4d}_populate_kernel() 2025-09-19 16:35:42 +02:00
kfence kfence: skip __GFP_THISNODE allocations on NUMA systems 2025-02-17 10:05:31 +01:00
kmsan dma: kmsan: export kmsan_handle_dma() for modules 2025-03-13 13:01:58 +01:00
backing-dev.c
balloon_compaction.c mm: remove MIGRATE_SYNC_NO_COPY mode 2024-07-03 19:30:00 -07:00
bootmem_info.c
cma_debug.c
cma_sysfs.c
cma.c mm/cma: add cma_{alloc,free}_folio() 2024-09-03 21:15:36 -07:00
cma.h
compaction.c mm/compaction: fix bug in hugetlb handling pathway 2025-04-25 10:47:53 +02:00
debug_page_alloc.c
debug_page_ref.c
debug_vm_pgtable.c mm/debug_vm_pgtable: clear page table entries at destroy_args() 2025-08-28 16:31:05 +02:00
debug.c mm: open-code page_folio() in dump_page() 2024-12-14 20:03:33 +01:00
dmapool_test.c mm/dmapool: add MODULE_DESCRIPTION() 2024-07-03 19:29:58 -07:00
dmapool.c
early_ioremap.c
execmem.c
fadvise.c introduce fd_file(), convert all accessors to it. 2024-08-12 22:00:43 -04:00
fail_page_alloc.c fault-inject: improve build for CONFIG_FAULT_INJECTION=n 2024-09-01 20:43:33 -07:00
failslab.c fault-inject: improve build for CONFIG_FAULT_INJECTION=n 2024-09-01 20:43:33 -07:00
filemap.c readahead: fix return value of page_cache_next_miss() when no hole is found 2025-08-28 16:30:58 +02:00
folio-compat.c mm: remove putback_lru_page() 2024-09-09 16:38:59 -07:00
gup_test.c
gup_test.h
gup.c mm: folio_may_be_lru_cached() unless folio_test_large() 2025-10-02 13:44:11 +02:00
highmem.c mm/highmem: make nr_free_highpages() return "unsigned long" 2024-07-03 19:30:06 -07:00
hmm.c mm/hmm: move pmd_to_hmm_pfn_flags() to the respective #ifdeffery 2025-08-15 12:14:13 +02:00
huge_memory.c mm/huge_memory: fix dereferencing invalid pmd migration entry 2025-05-18 08:24:51 +02:00
hugetlb_cgroup.c mm: memcg: don't call propagate_protected_usage() needlessly 2024-09-01 20:25:50 -07:00
hugetlb_vmemmap.c mm/hugetlb_vmemmap: don't synchronize_rcu() without HVO 2024-09-01 20:25:45 -07:00
hugetlb_vmemmap.h
hugetlb.c mm/hugetlb: add missing hugetlb_lock in __unmap_hugepage_range() 2025-09-19 16:35:47 +02:00
hwpoison-inject.c mm/hwpoison: add MODULE_DESCRIPTION() 2024-07-03 19:29:58 -07:00
init-mm.c
internal.h mm: fix folio_pte_batch() on XEN PV 2025-05-18 08:24:51 +02:00
interval_tree.c
io-mapping.c
ioremap.c
Kconfig Disable SLUB_TINY for build testing 2025-09-19 16:35:48 +02:00
Kconfig.debug slub: Introduce CONFIG_SLUB_RCU_DEBUG 2024-08-27 14:12:51 +02:00
khugepaged.c mm/khugepaged: fix the address passed to notifier on testing young 2025-09-19 16:35:46 +02:00
kmemleak.c mm: fix possible deadlock in kmemleak 2025-09-09 18:58:16 +02:00
ksm.c mm/ksm: fix -Wsometimes-uninitialized from clang-21 in advisor_mode_show() 2025-08-01 09:48:42 +01:00
list_lru.c mm: list_lru: fix UAF for memory cgroup 2024-08-07 18:33:56 -07:00
maccess.c
madvise.c mm: close theoretical race where stale TLB entries could linger 2025-06-27 11:11:38 +01:00
Makefile mm: introduce numa_emulation 2024-09-03 21:15:31 -07:00
mapping_dirty_helpers.c
memblock.c memblock: Accept allocated memory before use in memblock_double_array() 2025-05-18 08:24:54 +02:00
memcontrol-v1.c mm/thp: fix deferred split unqueue naming and locking 2024-11-05 16:49:54 -08:00
memcontrol-v1.h mm: memcg: declare do_memsw_account inline 2024-12-14 20:03:33 +01:00
memcontrol.c memcg: always call cond_resched() after fn() 2025-05-29 11:03:22 +02:00
memfd.c mm: reinstate ability to map write-sealed memfd mappings read-only 2025-01-09 13:33:54 +01:00
memory_hotplug.c mm/hwpoison: introduce folio_contain_hwpoisoned_page() helper 2025-04-20 10:15:50 +02:00
memory-failure.c mm/memory-failure: fix redundant updates for already poisoned pages 2025-09-19 16:35:46 +02:00
memory-tiers.c memory tiers: use default_dram_perf_ref_source in log message 2024-09-26 14:01:44 -07:00
memory.c mm: fix apply_to_existing_page_range() 2025-04-25 10:47:53 +02:00
mempolicy.c mm/mempolicy: fix migrate_to_node() assuming there is at least one VMA in a MM 2024-12-14 20:03:32 +01:00
mempool.c
memremap.c
memtest.c
migrate_device.c mm/migrate_device: don't add folio to be freed to LRU in migrate_device_finalize() 2025-02-27 04:30:22 -08:00
migrate.c mm: add folio_expected_ref_count() for reference count calculation 2025-09-25 11:13:50 +02:00
mincore.c mm: provide mm_struct and address to huge_ptep_get() 2024-07-12 15:52:15 -07:00
mlock.c mm: folio_may_be_lru_cached() unless folio_test_large() 2025-10-02 13:44:11 +02:00
mm_init.c mm: drop CONFIG_HAVE_ARCH_NODEDATA_EXTENSION 2024-09-03 21:15:28 -07:00
mm_slot.h
mmap_lock.c mm: mmap_lock: replace get_memcg_path_buf() with on-stack buffer 2024-07-03 19:30:26 -07:00
mmap.c mm: reinstate ability to map write-sealed memfd mappings read-only 2025-01-09 13:33:54 +01:00
mmu_gather.c
mmu_notifier.c mm: move internal core VMA manipulation functions to own file 2024-09-01 20:25:54 -07:00
mmzone.c mm: improve code consistency with zonelist_* helper functions 2024-09-01 20:25:55 -07:00
mprotect.c mm: refactor map_deny_write_exec() 2024-11-05 16:49:55 -08:00
mremap.c mm/mremap: correctly handle partial mremap() of VMA starting at 0 2025-04-20 10:15:49 +02:00
mseal.c ALong with the usual shower of singleton patches, notable patch series in 2024-09-21 07:29:05 -07:00
msync.c
nommu.c nommu: pass NULL argument to vma_iter_prealloc() 2024-11-11 17:20:23 -08:00
numa_emulation.c mm: introduce numa_emulation 2024-09-03 21:15:31 -07:00
numa_memblks.c mm: numa_clear_kernel_node_hotplug: Add NUMA_NO_NODE check for node id 2024-10-28 21:40:40 -07:00
numa.c mm: make range-to-target_node lookup facility a part of numa_memblks 2024-09-03 21:15:32 -07:00
oom_kill.c memcg: fix soft lockup in the OOM process 2025-02-08 09:58:19 +01:00
page_alloc.c page_pool: Move pp_magic check into helper functions 2025-06-19 15:31:42 +02:00
page_counter.c mm, memcg: cg2 memory{.swap,}.peak write handlers 2024-09-01 20:25:53 -07:00
page_ext.c mm: don't account memmap per-node 2024-08-15 22:16:14 -07:00
page_idle.c
page_io.c mm: count zeromap read and set for swapout and swapin 2024-11-11 00:00:37 -08:00
page_isolation.c mm/hugetlb: wait for hugetlb folios to be freed 2025-03-22 12:54:28 -07:00
page_owner.c
page_poison.c
page_reporting.c
page_reporting.h
page_table_check.c
page_vma_mapped.c mm: make page_mapped_in_vma() hugetlb walk aware 2025-04-20 10:15:49 +02:00
page-writeback.c mm: fix ratelimit_pages update error in dirty_ratio_handler() 2025-06-27 11:11:22 +01:00
pagewalk.c mm/pagewalk: fix usage of pmd_leaf()/pud_leaf() without present check 2024-10-28 21:40:38 -07:00
percpu-internal.h mm: remove CONFIG_MEMCG_KMEM 2024-07-10 12:14:54 -07:00
percpu-km.c
percpu-stats.c
percpu-vm.c
percpu.c mm: introduce and use {pgd,p4d}_populate_kernel() 2025-09-19 16:35:42 +02:00
pgalloc-track.h
pgtable-generic.c
process_vm_access.c
ptdump.c mm/ptdump: take the memory hotplug lock inside ptdump_walk_pgd() 2025-08-20 18:30:55 +02:00
readahead.c mm/readahead: fix large folio support in async readahead 2025-01-09 13:33:54 +01:00
rmap.c mm/rmap: reject hugetlb folios in folio_make_device_exclusive() 2025-04-20 10:15:49 +02:00
rodata_test.c
secretmem.c fs: export anon_inode_make_secure_inode() and fix secretmem LSM bypass 2025-07-10 16:05:09 +02:00
shmem_quota.c shmem_quota: build the object file conditionally to the config option 2024-09-01 20:25:45 -07:00
shmem.c mm/hwpoison: introduce folio_contain_hwpoisoned_page() helper 2025-04-20 10:15:50 +02:00
show_mem.c mm/show_mem.c: report alloc tags in human readable units 2024-09-17 01:07:00 -07:00
shrinker_debug.c mm: shrinker: use min() to improve shrinker_debugfs_scan_write() 2024-09-03 21:15:40 -07:00
shrinker.c mm: shrinker: avoid memleak in alloc_shrinker_info 2024-10-31 20:27:04 -07:00
shuffle.c
shuffle.h
slab_common.c slab: Fix too strict alignment check in create_cache() 2024-12-09 10:41:07 +01:00
slab.h mm/slub: Avoid list corruption when removing a slab from the full list 2024-12-09 10:41:04 +01:00
slub.c mm/slub: avoid accessing metadata when pointer is invalid in object_err() 2025-09-09 18:58:22 +02:00
sparse-vmemmap.c mm: introduce and use {pgd,p4d}_populate_kernel() 2025-09-19 16:35:42 +02:00
sparse.c mm: fix accounting of memmap pages 2025-09-09 18:58:22 +02:00
swap_cgroup.c mm: attempt to batch free swap entries for zap_pte_range() 2024-09-03 21:15:33 -07:00
swap_slots.c
swap_state.c mm: add nr argument in mem_cgroup_swapin_uncharge_swap() helper to support large folios 2024-09-17 01:07:01 -07:00
swap.c mm: folio_may_be_lru_cached() unless folio_test_large() 2025-10-02 13:44:11 +02:00
swap.h mm: fix swap_read_folio_zeromap() for large folios with partial zeromap 2024-09-17 01:07:01 -07:00
swapfile.c mm: swap: fix potential buffer overflow in setup_clusters() 2025-08-15 12:14:14 +02:00
truncate.c mm: Fix missing folio invalidation calls during truncation 2024-08-24 16:09:16 +02:00
usercopy.c
userfaultfd.c mm/userfaultfd: fix kmap_local LIFO ordering for CONFIG_HIGHPTE 2025-09-09 18:58:15 +02:00
util.c mm: only enforce minimum stack gap size if it's sensible 2024-09-01 20:26:02 -07:00
vma_internal.h mm/hugetlb: unshare page tables during VMA split, not before 2025-06-27 11:11:40 +01:00
vma.c mm/vma: reset VMA iterator on commit_merge() OOM failure 2025-07-06 11:01:48 +02:00
vma.h mm/vma: add give_up_on_oom option on modify/merge, use in uffd release 2025-04-25 10:48:06 +02:00
vmalloc.c mm/vmalloc: leave lazy MMU mode on PTE mapping error 2025-07-17 18:37:14 +02:00
vmpressure.c
vmscan.c mm: revert "mm: vmscan.c: fix OOM on swap stress test" 2025-09-25 11:13:45 +02:00
vmstat.c vmstat: call fold_vm_zone_numa_events() before show per zone NUMA event 2024-12-09 10:41:01 +01:00
workingset.c cachestat: do not flush stats in recency check 2024-07-03 22:40:37 -07:00
z3fold.c mm/z3fold: add __percpu annotation to *unbuddied pointer in struct z3fold_pool 2024-09-01 20:25:56 -07:00
zbud.c
zpool.c
zsmalloc.c mm/zsmalloc: do not pass __GFP_MOVABLE if CONFIG_COMPACTION=n 2025-08-01 09:48:44 +01:00
zswap.c mm: zswap: fix crypto_free_acomp() deadlock in zswap_cpu_comp_dead() 2025-04-10 14:39:40 +02:00