Huang Ying 42012e0436 migrate_pages: restrict number of pages to migrate in batch ... This is a preparation patch to batch the folio unmapping and moving for non-hugetlb folios. If we had batched the folio unmapping, all folios to be migrated would be unmapped before copying the contents and flags of the folios. If the folios that were passed to migrate_pages() were too many in unit of pages, the execution of the processes would be stopped for too long time, thus too long latency. For example, migrate_pages() syscall will call migrate_pages() with all folios of a process. To avoid this possible issue, in this patch, we restrict the number of pages to be migrated to be no more than HPAGE_PMD_NR. That is, the influence is at the same level of THP migration. Link: https://lkml.kernel.org/r/20230213123444.155149-4-ying.huang@intel.com Signed-off-by: "Huang, Ying" <ying.huang@intel.com> Reviewed-by: Baolin Wang <baolin.wang@linux.alibaba.com> Cc: Zi Yan <ziy@nvidia.com> Cc: Yang Shi <shy828301@gmail.com> Cc: Oscar Salvador <osalvador@suse.de> Cc: Matthew Wilcox <willy@infradead.org> Cc: Bharata B Rao <bharata@amd.com> Cc: Alistair Popple <apopple@nvidia.com> Cc: Xin Hao <xhao@linux.alibaba.com> Cc: Minchan Kim <minchan@kernel.org> Cc: Mike Kravetz <mike.kravetz@oracle.com> Cc: Hyeonggon Yoo <42.hyeyoo@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>		2023-02-16 20:43:53 -08:00
..
damon	mm/damon/dbgfs: print DAMON debugfs interface deprecation message	2023-02-13 15:54:33 -08:00
kasan	lib/stacktrace, kasan, kmsan: rework extra_bits interface	2023-02-16 20:43:51 -08:00
kfence	hardening updates for v6.2-rc1	2022-12-14 12:20:00 -08:00
kmsan	lib/stacktrace, kasan, kmsan: rework extra_bits interface	2023-02-16 20:43:51 -08:00
backing-dev.c	mm: add /sys/class/bdi/<bdi>/min_ratio_fine knob	2022-11-30 15:59:06 -08:00
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.c	mm/cma: fix potential memory loss on cma_declare_contiguous_nid	2023-02-02 22:33:24 -08:00
cma.h
cma_debug.c	mm/cma_debug: show complete cma name in debugfs directories	2022-09-11 20:25:50 -07:00
cma_sysfs.c
compaction.c	mm, compaction: finish pageblocks on complete migration failure	2023-02-02 22:33:30 -08:00
debug.c	mm: export dump_mm()	2023-02-09 16:51:40 -08:00
debug_page_ref.c
debug_vm_pgtable.c	mm: remove __HAVE_ARCH_PTE_SWP_EXCLUSIVE	2023-02-02 22:33:11 -08:00
dmapool.c
early_ioremap.c
fadvise.c	mm: support POSIX_FADV_NOREUSE	2023-01-18 17:12:57 -08:00
failslab.c	mm: fix unexpected changes to {failslab|fail_page_alloc}.attr	2022-11-22 18:50:44 -08:00
filemap.c	filemap: add mapping_read_folio_gfp()	2023-02-09 16:51:42 -08:00
folio-compat.c	mm: add folio_add_new_anon_rmap()	2023-02-02 22:32:56 -08:00
frontswap.c	frontswap: don't call ->init if no ops are registered	2022-09-26 12:14:34 -07:00
gup.c	mm/hugetlb: convert isolate_hugetlb to folios	2023-02-13 15:54:26 -08:00
gup_test.c	mm/gup_test: free memory allocated via kvcalloc() using kvfree()	2022-12-15 16:37:48 -08:00
gup_test.h	mm/gup_test: start/stop/read functionality for PIN LONGTERM test	2022-11-08 17:37:15 -08:00
highmem.c	highmem: fix kmap_to_page() for kmap_local_page() addresses	2022-10-12 18:51:51 -07:00
hmm.c	mm/hugetlb: make walk_hugetlb_range() safe to pmd unshare	2023-01-18 17:12:39 -08:00
huge_memory.c	mm/gup: simplify the external interface functions and consolidate invariants	2023-02-09 16:51:44 -08:00
hugetlb.c	mm/hugetlb: convert hugetlb_wp() to take in a folio	2023-02-13 15:54:29 -08:00
hugetlb_cgroup.c	mm/hugetlb: increase use of folios in alloc_huge_page()	2023-02-13 15:54:27 -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	mm: hugetlb_vmemmap: improve hugetlb_vmemmap code readability	2022-08-08 18:06:43 -07:00
hwpoison-inject.c	mm/hwpoison: add __init/__exit annotations to module init/exit funcs	2022-10-03 14:03:05 -07:00
init-mm.c	mm: remove rb tree.	2022-09-26 19:46:16 -07:00
internal.h	mm/gup: move private gup FOLL_ flags to internal.h	2023-02-09 16:51:45 -08:00
interval_tree.c
io-mapping.c
ioremap.c	mm: ioremap: Add ioremap/iounmap_allowed()	2022-06-27 12:22:31 +01:00
Kconfig	zsmalloc: set default zspage chain size to 8	2023-02-02 22:33:23 -08:00
Kconfig.debug	mm: move KMEMLEAK's Kconfig items from lib to mm	2023-02-02 22:33:26 -08:00
khugepaged.c	mm/khugepaged: fix invalid page access in release_pte_pages()	2023-02-13 15:54:26 -08:00
kmemleak.c	lib/stackdepot, mm: rename stack_depot_want_early_init	2023-02-16 20:43:49 -08:00
ksm.c	Merge branch 'mm-hotfixes-stable' into mm-stable	2023-02-10 15:34:48 -08:00
list_lru.c
maccess.c	maccess: Fix writing offset in case of fault in strncpy_from_kernel_nofault()	2022-11-11 11:44:46 -08:00
madvise.c	mm: replace vma->vm_flags direct modifications with modifier calls	2023-02-09 16:51:39 -08:00
Makefile	mm: memcontrol: drop dead CONFIG_MEMCG_SWAP config symbol	2022-10-03 14:03:36 -07:00
mapping_dirty_helpers.c	mm/mmu_notifier: remove unused mmu_notifier_range_update_to_read_only export	2023-02-02 22:32:54 -08:00
memblock.c	mm: Always release pages to the buddy allocator in memblock_free_late().	2023-01-08 18:49:33 +02:00
memcontrol.c	mm: multi-gen LRU: section for memcg LRU	2023-02-02 22:33:27 -08:00
memfd.c	mm/memfd: add write seals when apply SEAL_EXEC to executable memfd	2023-01-18 17:12:37 -08:00
memory-failure.c	mm/hugetlb: convert isolate_hugetlb to folios	2023-02-13 15:54:26 -08:00
memory-tiers.c	memory tier: release the new_memtier in find_create_memory_tier()	2023-02-09 16:51:40 -08:00
memory.c	Merge branch 'mm-hotfixes-stable' into mm-stable	2023-02-10 15:34:48 -08:00
memory_hotplug.c	mm/hugetlb: convert isolate_hugetlb to folios	2023-02-13 15:54:26 -08:00
mempolicy.c	mm/mempolicy: convert migrate_page_add() to migrate_folio_add()	2023-02-13 15:54:31 -08:00
mempool.c	mempool: do not use ksize() for poisoning	2022-11-30 15:58:41 -08:00
memremap.c	mm/memremap.c: fix outdated comment in devm_memremap_pages	2023-02-09 16:51:46 -08:00
memtest.c
migrate.c	migrate_pages: restrict number of pages to migrate in batch	2023-02-16 20:43:53 -08:00
migrate_device.c	mm/mmu_notifier: remove unused mmu_notifier_range_update_to_read_only export	2023-02-02 22:32:54 -08:00
mincore.c	mm: convert find_get_incore_page() to filemap_get_incore_folio()	2022-11-08 17:37:18 -08:00
mlock.c	mm: introduce vm_flags_reset_once to replace WRITE_ONCE vm_flags updates	2023-02-09 16:51:41 -08:00
mm_init.c	memory: move hotplug memory notifier priority to same file for easy sorting	2022-11-08 17:37:17 -08:00
mm_slot.h	mm: introduce common struct mm_slot	2022-10-03 14:02:43 -07:00
mmap.c	mm: introduce __vm_flags_mod and use it in untrack_pfn	2023-02-09 16:51:40 -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	mm/mmu_notifier: remove unused mmu_notifier_range_update_to_read_only export	2023-02-02 22:32:54 -08:00
mmzone.c	mm: multi-gen LRU: groundwork	2022-09-26 19:46:09 -07:00
mprotect.c	mm: replace vma->vm_flags direct modifications with modifier calls	2023-02-09 16:51:39 -08:00
mremap.c	mm: replace vma->vm_flags direct modifications with modifier calls	2023-02-09 16:51:39 -08:00
msync.c	mm/msync: use vma_find() instead of vma linked list	2022-09-26 19:46:25 -07:00
nommu.c	mm: replace vma->vm_flags direct modifications with modifier calls	2023-02-09 16:51:39 -08:00
oom_kill.c	mm/mmu_notifier: remove unused mmu_notifier_range_update_to_read_only export	2023-02-02 22:32:54 -08:00
page-writeback.c	fs: convert writepage_t callback to pass a folio	2023-02-02 22:33:34 -08:00
page_alloc.c	mm/page_alloc: reduce fallbacks to (MIGRATE_PCPTYPES - 1)	2023-02-09 16:51:41 -08:00
page_counter.c	mm: page_counter: remove unneeded atomic ops for low/min	2022-09-11 20:26:01 -07:00
page_ext.c	mm/page_ext: init page_ext early if there are no deferred struct pages	2023-02-02 22:33:22 -08:00
page_idle.c	mm: page_idle: convert page idle to use a folio	2023-01-18 17:12:52 -08:00
page_io.c	block: remove ->rw_page	2023-02-02 22:33:34 -08:00
page_isolation.c	mm/page_isolation: fix clang deadcode warning	2022-10-28 13:37:22 -07:00
page_owner.c	lib/stackdepot, mm: rename stack_depot_want_early_init	2023-02-16 20:43:49 -08:00
page_poison.c
page_reporting.c	mm/page_reporting: replace rcu_access_pointer() with rcu_dereference_protected()	2023-01-18 17:12:50 -08:00
page_reporting.h
page_table_check.c	mm/page_ext: do not allocate space for page_ext->flags if not needed	2023-02-02 22:33:11 -08:00
page_vma_mapped.c	mm/hugetlb: introduce hugetlb_walk()	2023-01-18 17:12:39 -08:00
pagewalk.c	mm/hugetlb: introduce hugetlb_walk()	2023-01-18 17:12:39 -08:00
percpu-internal.h
percpu-km.c
percpu-stats.c
percpu-vm.c
percpu.c	mm/percpu.c: remove the lcm code since block size is fixed at page size	2022-11-07 22:59:18 -08:00
pgalloc-track.h
pgtable-generic.c
process_vm_access.c	use less confusing names for iov_iter direction initializers	2022-11-25 13:01:55 -05:00
ptdump.c	mm: pagewalk: Fix race between unmap and page walker	2022-09-03 10:13:13 -07:00
readahead.c	readahead: convert readahead_expand() to use a folio	2023-02-02 22:33:21 -08:00
rmap.c	mm/hugetlb: convert hugetlb fault paths to use alloc_hugetlb_folio()	2023-02-13 15:54:29 -08:00
rodata_test.c	mm/rodata_test: use PAGE_ALIGNED() helper	2022-10-03 14:03:05 -07:00
secretmem.c	mm: replace vma->vm_flags direct modifications with modifier calls	2023-02-09 16:51:39 -08:00
shmem.c	shmem: fix W=1 build warnings with CONFIG_SHMEM=n	2023-02-09 16:51:42 -08:00
shrinker_debug.c	mm: shrinkers: fix deadlock in shrinker debugfs	2023-02-09 15:56:51 -08:00
shuffle.c	mm/shuffle: convert module_param_call to module_param_cb	2022-10-03 14:03:07 -07:00
shuffle.h
slab.c	mm: introduce folio_is_pfmemalloc	2023-01-18 17:12:57 -08:00
slab.h	mm/slab: add is_kmalloc_cache() helper function	2023-01-18 17:12:54 -08:00
slab_common.c	mm/kasan: simplify and refine kasan_cache code	2023-01-18 17:12:55 -08:00
slob.c	Merge branch 'slab/for-6.1/kmalloc_size_roundup' into slab/for-next	2022-09-29 11:30:55 +02:00
slub.c	lib/stackdepot, mm: rename stack_depot_want_early_init	2023-02-16 20:43:49 -08:00
sparse-vmemmap.c	mm/sparse-vmemmap: generalise vmemmap_populate_hugepages()	2022-12-11 18:12:12 -08:00
sparse.c	mm/sparse: fix "unused function 'pgdat_to_phys'" warning	2023-02-02 22:33:29 -08:00
swap.c	mm: clean up mlock_page / munlock_page references in comments	2023-02-02 22:33:20 -08:00
swap.h	mm: remove the __swap_writepage return value	2023-02-02 22:33:33 -08:00
swap_cgroup.c	mm: memcontrol: don't allocate cgroup swap arrays when memcg is disabled	2022-10-03 14:03:36 -07:00
swap_slots.c	mm/swap: convert put_swap_page() to put_swap_folio()	2022-10-03 14:02:46 -07:00
swap_state.c	swap_state: update shadow_nodes for anonymous page	2023-02-02 22:33:24 -08:00
swapfile.c	Merge branch 'mm-hotfixes-stable' into mm-stable	2023-02-10 15:34:48 -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	mm/uffd: detect pgtable allocation failures	2023-01-18 17:12:53 -08:00
util.c	mm: fix typo in __vm_enough_memory warning	2023-02-13 15:54:33 -08:00
vmalloc.c	mm/vmalloc: skip the uninitilized vmalloc areas	2023-02-09 16:51:43 -08:00
vmpressure.c
vmscan.c	Merge branch 'mm-hotfixes-stable' into mm-stable	2023-02-10 15:34:48 -08:00
vmstat.c	mm: vmscan: split khugepaged stats from direct reclaim stats	2022-11-30 15:58:41 -08:00
workingset.c	swap_state: update shadow_nodes for anonymous page	2023-02-02 22:33:24 -08:00
z3fold.c	mm: remove PageMovable export	2023-01-18 17:12:57 -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: make zspage chain size configurable	2023-02-02 22:33:23 -08:00
zswap.c	zswap: fix writeback lock ordering for zsmalloc	2022-12-11 18:12:09 -08:00