linux/mm
Vlastimil Babka 95e7a450b8 Revert "mm/compaction: fix set skip in fast_find_migrateblock"
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>
2023-01-29 10:38:43 -08:00
..
damon mm/damon: use kstrtobool() instead of strtobool() 2022-11-30 15:58:45 -08:00
kasan kasan: mark kasan_kunit_executing as static 2023-01-11 16:14:21 -08:00
kfence hardening updates for v6.2-rc1 2022-12-14 12:20:00 -08:00
kmsan kmsan: export kmsan_handle_urb 2022-12-21 14:31:52 -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
bootmem_info.c
cma_debug.c
cma_sysfs.c
cma.c
cma.h
compaction.c Revert "mm/compaction: fix set skip in fast_find_migrateblock" 2023-01-29 10:38:43 -08:00
debug_page_ref.c
debug_vm_pgtable.c mm: remove unused savedwrite infrastructure 2022-11-30 15:58:49 -08:00
debug.c mm,thp,rmap: simplify compound page mapcount handling 2022-11-30 15:58:46 -08:00
dmapool.c
early_ioremap.c
fadvise.c mm/fadvise: use LLONG_MAX instead of -1 for eof 2022-12-11 18:12:11 -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: convert replace_page_cache_page() to replace_page_cache_folio() 2022-12-11 18:12:12 -08:00
folio-compat.c folio-compat: remove lru_cache_add() 2022-12-11 18:12:13 -08:00
frontswap.c frontswap: don't call ->init if no ops are registered 2022-09-26 12:14:34 -07:00
gup_test.c mm/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
gup.c New Feature: 2022-12-17 14:06:53 -06:00
highmem.c highmem: fix kmap_to_page() for kmap_local_page() addresses 2022-10-12 18:51:51 -07:00
hmm.c mm: Remove pointless barrier() after pmdp_get_lockless() 2022-12-15 10:37:27 -08:00
huge_memory.c ARM64: 2022-12-15 11:12:21 -08:00
hugetlb_cgroup.c mm/hugeltb_cgroup: convert hugetlb_cgroup_commit_charge*() to folios 2022-11-30 15:58:43 -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
hugetlb.c mm: update mmap_sem comments to refer to mmap_lock 2023-01-11 16:14:22 -08:00
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/hwpoison: introduce per-memory_block hwpoison counter 2022-11-08 17:37:22 -08:00
interval_tree.c
io-mapping.c
ioremap.c
Kconfig New Feature: 2022-12-17 14:06:53 -06:00
Kconfig.debug mm, slub: add CONFIG_SLUB_TINY 2022-11-27 23:38:02 +01:00
khugepaged.c mm/MADV_COLLAPSE: don't expand collapse when vm_end is past requested end 2023-01-11 16:14:20 -08:00
kmemleak.c mm/kmemleak: use %pK to display kernel pointers in backtrace 2022-12-15 16:37:49 -08:00
ksm.c mm/ksm: convert break_ksm() to use walk_page_range_vma() 2022-12-11 18:12:09 -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: update mmap_sem comments to refer to mmap_lock 2023-01-11 16:14:22 -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: Rename pmd_read_atomic() 2022-12-15 10:37:27 -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: memcg: fix swapcached stat accounting 2022-12-11 18:12:20 -08:00
memfd.c
memory_hotplug.c mm: add pageblock_aligned() macro 2022-10-03 14:03:04 -07:00
memory-failure.c mm/memory-failure.c: cleanup in unpoison_memory 2022-11-30 15:59:08 -08:00
memory-tiers.c mm/demotion: fix NULL vs IS_ERR checking in memory_tier_init 2022-11-30 15:58:54 -08:00
memory.c mm: remove VM_FAULT_WRITE 2022-12-11 18:12:08 -08:00
mempolicy.c mm/mempolicy: fix memory leak in set_mempolicy_home_node system call 2022-12-21 14:31:51 -08:00
mempool.c mempool: do not use ksize() for poisoning 2022-11-30 15:58:41 -08:00
memremap.c mm/memremap.c: map FS_DAX device memory as decrypted 2022-11-08 15:57:23 -08:00
memtest.c
migrate_device.c mm/migrate_device: return number of migrating pages in args->cpages 2022-11-22 18:50:43 -08:00
migrate.c MM patches for 6.2-rc1. 2022-12-13 19:29:45 -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/mlock: drop dead code in count_mm_mlocked_page_nr() 2022-09-26 19:46:27 -07:00
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_lock.c
mmap.c mm: update mmap_sem comments to refer to mmap_lock 2023-01-11 16:14:22 -08:00
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
mmzone.c mm: multi-gen LRU: groundwork 2022-09-26 19:46:09 -07:00
mprotect.c New Feature: 2022-12-17 14:06:53 -06:00
mremap.c mm, mremap: fix mremap() expanding vma with addr inside vma 2022-12-21 14:31:51 -08:00
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 2023-01-11 16:14:23 -08:00
oom_kill.c mm: reduce noise in show_mem for lowmem allocations 2022-09-26 19:46:29 -07:00
page_alloc.c mm/page_alloc: update comments in __free_pages_ok() 2022-12-11 18:12:17 -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 Merge branch 'mm-hotfixes-stable' into mm-stable 2022-11-30 14:58:42 -08:00
page_idle.c
page_io.c use less confusing names for iov_iter direction initializers 2022-11-25 13:01:55 -05:00
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 mm/page_reporting: Add checks for page_reporting_order param 2022-11-28 16:48:19 +00:00
page_reporting.h
page_table_check.c mm: use kstrtobool() instead of strtobool() 2022-11-30 15:58:45 -08:00
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 mm: add bdi_set_min_ratio_no_scale() function 2022-11-30 15:59:06 -08:00
pagewalk.c mm/pagewalk: add walk_page_range_vma() 2022-12-11 18:12:08 -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
readahead.c mm: add PSI accounting around ->read_folio and ->readahead calls 2022-09-20 08:24:38 -06:00
rmap.c mm,thp,rmap: fix races between updates of subpages_mapcount 2022-12-11 18:12:20 -08:00
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 2023-01-11 16:14:20 -08:00
shrinker_debug.c
shuffle.c mm/shuffle: convert module_param_call to module_param_cb 2022-10-03 14:03:07 -07:00
shuffle.h
slab_common.c hardening updates for v6.2-rc1 2022-12-14 12:20:00 -08:00
slab.c mm, slab: periodically resched in drain_freelist() 2023-01-02 09:31:05 +01:00
slab.h Merge branch 'slub-tiny-v1r6' into slab/for-next 2022-12-01 00:14:00 +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 MM patches for 6.2-rc1. 2022-12-13 19:29:45 -08:00
sparse-vmemmap.c mm/sparse-vmemmap: generalise vmemmap_populate_hugepages() 2022-12-11 18:12:12 -08:00
sparse.c mm/hwpoison: introduce per-memory_block hwpoison counter 2022-11-08 17:37:22 -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 mm: mmu_gather: prepare to gather encoded page pointers with flags 2022-11-30 15:58:50 -08:00
swap.c mm: teach release_pages() to take an array of encoded page pointers too 2022-11-30 15:58:50 -08:00
swap.h mm: convert find_get_incore_page() to filemap_get_incore_folio() 2022-11-08 17:37:18 -08:00
swapfile.c MM patches for 6.2-rc1. 2022-12-13 19:29:45 -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 New Feature: 2022-12-17 14:06:53 -06:00
util.c mm,thp,rmap: simplify compound page mapcount handling 2022-11-30 15:58:46 -08:00
vmalloc.c mm: vmalloc: use trace_free_vmap_area_noflush event 2022-11-08 17:37:17 -08:00
vmpressure.c
vmscan.c New Feature: 2022-12-17 14:06:53 -06:00
vmstat.c mm: vmscan: split khugepaged stats from direct reclaim stats 2022-11-30 15:58:41 -08:00
workingset.c folio-compat: remove lru_cache_add() 2022-12-11 18:12:13 -08:00
z3fold.c zpool: clean out dead code 2022-12-11 18:12:10 -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: implement writeback mechanism for zsmalloc 2022-12-11 18:12:10 -08:00
zswap.c zswap: fix writeback lock ordering for zsmalloc 2022-12-11 18:12:09 -08:00