Vlastimil Babka e1275a6b2d Revert "mm/compaction: fix set skip in fast_find_migrateblock" ... commit 95e7a450b8 upstream. This reverts commit 7efc3b7261. We have got openSUSE reports (Link 1) for 6.1 kernel with khugepaged stalling CPU for long periods of time. Investigation of tracepoint data shows that compaction is stuck in repeating fast_find_migrateblock() based migrate page isolation, and then fails to migrate all isolated pages. Commit 7efc3b7261 ("mm/compaction: fix set skip in fast_find_migrateblock") was suspected as it was merged in 6.1 and in theory can indeed remove a termination condition for fast_find_migrateblock() under certain conditions, as it removes a place that always marks a scanned pageblock from being re-scanned. There are other such places, but those can be skipped under certain conditions, which seems to match the tracepoint data. Testing of revert also appears to have resolved the issue, thus revert the commit until a more robust solution for the original problem is developed. It's also likely this will fix qemu stalls with 6.1 kernel reported in Link 2, but that is not yet confirmed. Link: https://bugzilla.suse.com/show_bug.cgi?id=1206848 Link: https://lore.kernel.org/kvm/b8017e09-f336-3035-8344-c549086c2340@kernel.org/ Link: https://lore.kernel.org/lkml/20230125134434.18017-1-mgorman@techsingularity.net/ Fixes: 7efc3b7261 ("mm/compaction: fix set skip in fast_find_migrateblock") Cc: <stable@vger.kernel.org> Tested-by: Pedro Falcato <pedro.falcato@gmail.com> Acked-by: Mel Gorman <mgorman@techsingularity.net> Signed-off-by: Vlastimil Babka <vbabka@suse.cz> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2023-02-01 08:34:49 +01:00
..
damon	mm/damon/sysfs: fix wrong empty schemes assumption under online tuning in damon_sysfs_set_schemes()	2022-11-30 14:49:41 -08:00
kasan	panic: Consolidate open-coded panic_on_warn checks	2023-01-24 07:24:41 +01:00
kfence	panic: Consolidate open-coded panic_on_warn checks	2023-01-24 07:24:41 +01:00
kmsan	kmsan: include linux/vmalloc.h	2023-01-04 11:28:59 +01:00
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.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
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	Revert "mm/compaction: fix set skip in fast_find_migrateblock"	2023-02-01 08:34:49 +01:00
debug.c	mm: remove the vma linked list	2022-09-26 19:46:26 -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
dmapool.c
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 unexpected changes to {failslab|fail_page_alloc}.attr	2022-11-22 18:50:44 -08:00
filemap.c	- Yu Zhao's Multi-Gen LRU patches are here. They've been under test in	2022-10-10 17:53:04 -07:00
folio-compat.c	mm: remove try_to_free_swap()	2022-10-03 14:02:53 -07:00
frontswap.c	frontswap: don't call ->init if no ops are registered	2022-09-26 12:14:34 -07:00
gup.c	mm/gup: disallow FOLL_FORCE|FOLL_WRITE on hugetlb mappings	2022-12-31 13:33:11 +01:00
gup_test.c	mm: rename is_pinnable_page() to is_longterm_pinnable_page()	2022-07-17 17:14:27 -07:00
gup_test.h
highmem.c	highmem: fix kmap_to_page() for kmap_local_page() addresses	2022-10-12 18:51:51 -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	Partly revert "mm/thp: carry over dirty bit when thp splits on pmd"	2022-11-08 15:57:23 -08:00
hugetlb.c	mm/hugetlb: pre-allocate pgtable pages for uffd wr-protects	2023-01-24 07:24:36 +01:00
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: include missing linux/moduleparam.h	2022-11-08 15:57:23 -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/page_alloc: make boot_nodestats static	2022-10-03 14:03:30 -07:00
interval_tree.c
io-mapping.c
ioremap.c	mm: ioremap: Add ioremap/iounmap_allowed()	2022-06-27 12:22:31 +01:00
Kconfig	- Yu Zhao's Multi-Gen LRU patches are here. They've been under test in	2022-10-10 17:53:04 -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/MADV_COLLAPSE: don't expand collapse when vm_end is past requested end	2023-01-24 07:24:36 +01:00
kmemleak.c	mm/kmemleak: prevent soft lockup in kmemleak_scan()'s object iteration loops	2022-10-28 13:37:22 -07:00
ksm.c	ksm: use a folio in replace_page()	2022-10-03 14:02:53 -07:00
list_lru.c	mm: kmem: make mem_cgroup_from_obj() vmalloc()-safe	2022-06-16 19:48:31 -07:00
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	madvise: use zap_page_range_single for madvise dontneed	2022-11-30 14:49:40 -08:00
Makefile	mm: memcontrol: drop dead CONFIG_MEMCG_SWAP config symbol	2022-10-03 14:03:36 -07:00
mapping_dirty_helpers.c
memblock.c	mm: Always release pages to the buddy allocator in memblock_free_late().	2023-01-18 11:58:20 +01:00
memcontrol.c	memcg: fix possible use-after-free in memcg_write_event_control()	2022-12-09 18:41:17 -08:00
memfd.c	memfd: fix F_SEAL_WRITE after shmem huge page allocated	2022-03-05 11:08:32 -08:00
memory-failure.c	hugetlbfs: don't delete error page from pagecache	2022-11-08 15:57:22 -08:00
memory-tiers.c	memory tier, sysfs: rename attribute "nodes" to "nodelist"	2022-10-28 13:37:22 -07:00
memory.c	hugetlb: don't delete vma_lock in hugetlb MADV_DONTNEED processing	2022-11-30 14:49:40 -08:00
memory_hotplug.c	mm: add pageblock_aligned() macro	2022-10-03 14:03:04 -07:00
mempolicy.c	mm/mempolicy: fix memory leak in set_mempolicy_home_node system call	2023-01-04 11:28:59 +01:00
mempool.c	mm/mempool: use might_alloc()	2022-06-16 19:48:30 -07:00
memremap.c	mm/memremap.c: map FS_DAX device memory as decrypted	2022-11-08 15:57:23 -08:00
memtest.c
migrate.c	mm: migrate: fix return value if all subpages of THPs are migrated successfully	2022-10-28 13:37:22 -07:00
migrate_device.c	mm/migrate_device: return number of migrating pages in args->cpages	2022-11-22 18:50:43 -08:00
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
mm_slot.h	mm: introduce common struct mm_slot	2022-10-03 14:02:43 -07:00
mmap.c	mm/userfaultfd: enable writenotify while userfaultfd-wp is enabled for a VMA	2023-01-24 07:24:36 +01:00
mmap_lock.c
mmu_gather.c	mm/khugepaged: fix GUP-fast interaction by sending IPI	2022-11-30 14:49:42 -08:00
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/uffd: fix warning without PTE_MARKER_UFFD_WP compiled in	2022-10-12 15:56:46 -07:00
mremap.c	mm, mremap: fix mremap() expanding vma with addr inside vma	2023-01-04 11:28:59 +01:00
msync.c	mm/msync: use vma_find() instead of vma linked list	2022-09-26 19:46:25 -07:00
nommu.c	nommu: fix split_vma() map_count error	2023-01-24 07:24:33 +01:00
oom_kill.c	mm: reduce noise in show_mem for lowmem allocations	2022-09-26 19:46:29 -07:00
page-writeback.c	mm: export balance_dirty_pages_ratelimited_flags()	2022-09-26 12:28:07 +02:00
page_alloc.c	mm: fix unexpected changes to {failslab|fail_page_alloc}.attr	2022-11-22 18:50:44 -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_exit: fix kernel doc warning in page_ext_put()	2022-11-22 18:50:41 -08:00
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	swap: convert swap_writepage() to use a folio	2022-10-03 14:02:52 -07:00
page_isolation.c	mm/page_isolation: fix clang deadcode warning	2022-10-28 13:37:22 -07:00
page_owner.c	mm: reuse pageblock_start/end_pfn() macro	2022-10-03 14:03:03 -07:00
page_poison.c
page_reporting.c
page_reporting.h
page_table_check.c	mm/page_table_check: fix typos	2022-10-03 14:03:27 -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
pagewalk.c	- Yu Zhao's Multi-Gen LRU patches are here. They've been under test in	2022-10-10 17:53:04 -07:00
percpu-internal.h	percpu: improve percpu_alloc_percpu event trace	2022-05-13 07:20:18 -07:00
percpu-km.c
percpu-stats.c	mm: use vmalloc_array and vcalloc for array allocations	2022-03-08 09:30:46 -05:00
percpu-vm.c
percpu.c	mm: percpu: use kmemleak_ignore_phys() instead of kmemleak_free()	2022-07-17 17:14:47 -07:00
pgalloc-track.h
pgtable-generic.c	mm: avoid unnecessary flush on change_huge_pmd()	2022-05-13 07:20:05 -07:00
process_vm_access.c
ptdump.c	mm: pagewalk: Fix race between unmap and page walker	2022-09-03 10:13:13 -07:00
readahead.c	mm: add PSI accounting around ->read_folio and ->readahead calls	2022-09-20 08:24:38 -06:00
rmap.c	- Yu Zhao's Multi-Gen LRU patches are here. They've been under test in	2022-10-10 17:53:04 -07:00
rodata_test.c	mm/rodata_test: use PAGE_ALIGNED() helper	2022-10-03 14:03:05 -07:00
secretmem.c	mm/secretmem: remove reduntant return value	2022-10-03 14:03:36 -07:00
shmem.c	mm/shmem: restore SHMEM_HUGE_DENY precedence over MADV_COLLAPSE	2023-01-24 07:24:33 +01:00
shrinker_debug.c	mm: shrinkers: fix double kfree on shrinker name	2022-07-29 18:07:13 -07:00
shuffle.c	mm/shuffle: convert module_param_call to module_param_cb	2022-10-03 14:03:07 -07:00
shuffle.h
slab.c	Random number generator fixes for Linux 6.1-rc1.	2022-10-16 15:27:07 -07:00
slab.h	- Yu Zhao's Multi-Gen LRU patches are here. They've been under test in	2022-10-10 17:53:04 -07:00
slab_common.c	mm, slab: remove duplicate kernel-doc comment for ksize()	2022-11-07 17:11:27 +01:00
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	treewide: use prandom_u32_max() when possible, part 1	2022-10-11 17:42:55 -06:00
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.c	mm: add folio_add_lru_vma()	2022-10-03 14:02:45 -07:00
swap.h	mm: remove lookup_swap_cache()	2022-10-03 14:02:51 -07:00
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: convert free_swap_cache() to use a folio	2022-10-03 14:02:51 -07:00
swapfile.c	swapfile: fix soft lockup in scan_swap_map_slots	2022-11-22 18:50:44 -08:00
truncate.c	mm: add split_folio()	2022-10-03 14:02:45 -07:00
usercopy.c	usercopy: use unsigned long instead of uintptr_t	2022-07-01 17:03:38 -07:00
userfaultfd.c	mm/shmem: use page_mapping() to detect page cache for uffd continue	2022-11-08 15:57:23 -08:00
util.c	- Yu Zhao's Multi-Gen LRU patches are here. They've been under test in	2022-10-10 17:53:04 -07:00
vmalloc.c	mm: kmsan: maintain KMSAN metadata for page operations	2022-10-03 14:03:20 -07:00
vmpressure.c
vmscan.c	mm: introduce arch_has_hw_nonleaf_pmd_young()	2022-11-30 14:49:41 -08:00
vmstat.c	- Yu Zhao's Multi-Gen LRU patches are here. They've been under test in	2022-10-10 17:53:04 -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
zpool.c
zsmalloc.c	zsmalloc: zs_destroy_pool: add size_class NULL check	2022-10-20 21:27:21 -07:00
zswap.c	mm/swap: remove the end_write_func argument to __swap_writepage	2022-09-11 20:25:50 -07:00