Zi Yan 3372c3ffc3 mm/migrate: set swap entry values of THP tail pages properly. ... The tail pages in a THP can have swap entry information stored in their private field. When migrating to a new page, all tail pages of the new page need to update ->private to avoid future data corruption. This fix is stable-only, since after commit 07e09c483c ("mm/huge_memory: work on folio->swap instead of page->private when splitting folio"), subpages of a swapcached THP no longer requires the maintenance. Adding THPs to the swapcache was introduced in commit 38d8b4e6bd ("mm, THP, swap: delay splitting THP during swap out"), where each subpage of a THP added to the swapcache had its own swapcache entry and required the ->private field to point to the correct swapcache entry. Later, when THP migration functionality was implemented in commit 616b837153 ("mm: thp: enable thp migration in generic path"), it initially did not handle the subpages of swapcached THPs, failing to update their ->private fields or replace the subpage pointers in the swapcache. Subsequently, commit e71769ae52 ("mm: enable thp migration for shmem thp") addressed the swapcache update aspect. This patch fixes the update of subpage ->private fields. Closes: https://lore.kernel.org/linux-mm/1707814102-22682-1-git-send-email-quic_charante@quicinc.com/ Fixes: 616b837153 ("mm: thp: enable thp migration in generic path") Signed-off-by: Zi Yan <ziy@nvidia.com> Acked-by: David Hildenbrand <david@redhat.com> Reported-and-tested-by: Charan Teja Kalla <quic_charante@quicinc.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2024-04-03 15:19:47 +02:00
..
damon	mm/damon/reclaim: fix quota stauts loss due to online tunings	2024-03-01 13:26:39 +01:00
kasan	kasan/test: avoid gcc warning for intentional overflow	2024-04-03 15:19:27 +02:00
kfence	mm,kfence: decouple kfence from page granularity mapping judgement	2023-12-03 07:32:08 +01:00
kmsan	mm: kmsan: handle alloc failures in kmsan_vmap_pages_range_noflush()	2023-04-26 14:28:41 +02:00
Kconfig	mm: introduce new 'lock_mm_and_find_vma()' page fault helper	2023-07-01 13:16:24 +02:00
Kconfig.debug	mm: page_table_check: Make it dependent on EXCLUSIVE_SYSTEM_RAM	2023-06-14 11:15:29 +02:00
Makefile	…
backing-dev.c	writeback, cgroup: fix null-ptr-deref write in bdi_split_work_to_wbs	2023-04-26 14:28:39 +02:00
balloon_compaction.c	…
bootmem_info.c	…
cma.c	mm/cma: use nth_page() in place of direct struct page manipulation	2023-11-28 17:07:14 +00:00
cma.h	…
cma_debug.c	…
cma_sysfs.c	…
compaction.c	mm, vmscan: prevent infinite loop for costly GFP_NOIO | __GFP_RETRY_MAYFAIL allocations	2024-04-03 15:19:42 +02:00
debug.c	…
debug_page_ref.c	…
debug_vm_pgtable.c	…
dmapool.c	…
early_ioremap.c	…
fadvise.c	…
failslab.c	…
filemap.c	mm: merge folio_has_private()/filemap_release_folio() call pairs	2024-01-10 17:10:31 +01:00
folio-compat.c	…
frontswap.c	…
gup.c	mm: always expand the stack with the mmap write lock held	2023-07-01 13:16:25 +02:00
gup_test.c	…
gup_test.h	…
highmem.c	…
hmm.c	…
huge_memory.c	mm: huge_memory: don't force huge page alignment on 32 bit	2024-03-06 14:45:06 +00:00
hugetlb.c	hugetlb: fix null-ptr-deref in hugetlb_vma_lock_write	2023-12-13 18:39:20 +01:00
hugetlb_cgroup.c	…
hugetlb_vmemmap.c	mm: hugetlb_vmemmap: fix a race between vmemmap pmd split	2023-09-19 12:27:56 +02:00
hugetlb_vmemmap.h	…
hwpoison-inject.c	…
init-mm.c	…
internal.h	mm, netfs, fscache: stop read optimisation when folio removed from pagecache	2024-01-10 17:10:31 +01:00
interval_tree.c	…
io-mapping.c	…
ioremap.c	…
khugepaged.c	mm: merge folio_has_private()/filemap_release_folio() call pairs	2024-01-10 17:10:31 +01:00
kmemleak.c	…
ksm.c	mm/ksm: fix race with VMA iteration and mm_struct teardown	2023-03-30 12:49:29 +02:00
list_lru.c	…
maccess.c	mm: Fix copy_from_user_nofault().	2023-06-28 11:12:17 +02:00
madvise.c	madvise:madvise_free_pte_range(): don't use mapcount() against large folio for sharing check	2023-08-30 16:11:11 +02:00
mapping_dirty_helpers.c	…
memblock.c	x86/numa: Fix the address overlap check in numa_fill_memblks()	2024-03-01 13:26:36 +01:00
memcontrol.c	mm: memcontrol: clarify swapaccount=0 deprecation warning	2024-03-01 13:26:32 +01:00
memfd.c	memfd: check for non-NULL file_seals in memfd_create() syscall	2023-06-28 11:12:27 +02:00
memory-failure.c	mm: merge folio_has_private()/filemap_release_folio() call pairs	2024-01-10 17:10:31 +01:00
memory-tiers.c	memory tier: release the new_memtier in find_create_memory_tier()	2023-03-10 09:34:27 +01:00
memory.c	mm/swap: fix race when skipping swapcache	2024-03-01 13:26:32 +01:00
memory_hotplug.c	mm/memory_hotplug: fix error handling in add_memory_resource()	2024-01-10 17:10:33 +01:00
mempolicy.c	mm/mempolicy: fix set_mempolicy_home_node() previous VMA pointer	2023-11-08 14:11:02 +01:00
mempool.c	…
memremap.c	…
memtest.c	memtest: use {READ,WRITE}_ONCE in memory scanning	2024-04-03 15:19:36 +02:00
migrate.c	mm/migrate: set swap entry values of THP tail pages properly.	2024-04-03 15:19:47 +02:00
migrate_device.c	…
mincore.c	mm: teach mincore_hugetlb about pte markers	2023-03-22 13:34:03 +01:00
mlock.c	…
mm_init.c	…
mm_slot.h	…
mmap.c	mmap: fix error paths with dup_anon_vma()	2023-11-08 14:11:03 +01:00
mmap_lock.c	…
mmu_gather.c	…
mmu_notifier.c	…
mmzone.c	…
mprotect.c	…
mremap.c	mm, mremap: fix mremap() expanding for vma's with vm_ops->close()	2023-02-09 11:28:22 +01:00
msync.c	…
nommu.c	xtensa: fix lock_mm_and_find_vma in case VMA not found	2023-07-05 18:27:37 +01:00
oom_kill.c	…
page-writeback.c	mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again	2024-02-23 09:12:32 +01:00
page_alloc.c	mm, vmscan: prevent infinite loop for costly GFP_NOIO | __GFP_RETRY_MAYFAIL allocations	2024-04-03 15:19:42 +02:00
page_counter.c	…
page_ext.c	…
page_idle.c	…
page_io.c	use less confusing names for iov_iter direction initializers	2023-02-09 11:28:04 +01:00
page_isolation.c	…
page_owner.c	…
page_poison.c	…
page_reporting.c	…
page_reporting.h	…
page_table_check.c	mm: page_table_check: Ensure user pages are not slab pages	2023-06-14 11:15:29 +02:00
page_vma_mapped.c	…
pagewalk.c	…
percpu-internal.h	…
percpu-km.c	…
percpu-stats.c	…
percpu-vm.c	…
percpu.c	…
pgalloc-track.h	…
pgtable-generic.c	…
process_vm_access.c	use less confusing names for iov_iter direction initializers	2023-02-09 11:28:04 +01:00
ptdump.c	…
readahead.c	readahead: avoid multiple marked readahead pages	2024-03-15 10:48:19 -04:00
rmap.c	mm/hwpoison: convert TTU_IGNORE_HWPOISON to TTU_HWPOISON	2023-03-10 09:34:25 +01:00
rodata_test.c	…
secretmem.c	…
shmem.c	mm/shmem: fix race in shmem_undo_range w/THP	2023-12-20 17:00:26 +01:00
shrinker_debug.c	mm: shrinkers: fix deadlock in shrinker debugfs	2023-02-22 12:59:46 +01:00
shuffle.c	…
shuffle.h	…
slab.c	mm/slab: Fix undefined init_cache_node_node() for NUMA and !SMP	2023-03-30 12:49:23 +02:00
slab.h	…
slab_common.c	mm/slab_common: fix slab_caches list corruption after kmem_cache_destroy()	2023-10-06 14:57:03 +02:00
slob.c	…
slub.c	…
sparse-vmemmap.c	…
sparse.c	mm/sparsemem: fix race in accessing memory_section->usage	2024-01-31 16:17:02 -08:00
swap.c	…
swap.h	mm/swap: fix race when skipping swapcache	2024-03-01 13:26:32 +01:00
swap_cgroup.c	…
swap_slots.c	…
swap_state.c	…
swapfile.c	mm: swap: fix race between free_swap_and_cache() and swapoff()	2024-04-03 15:19:32 +02:00
truncate.c	mm: merge folio_has_private()/filemap_release_folio() call pairs	2024-01-10 17:10:31 +01:00
usercopy.c	mm: Fix copy_from_user_nofault().	2023-06-28 11:12:17 +02:00
userfaultfd.c	userfaultfd: fix mmap_changing checking in mfill_atomic_hugetlb	2024-02-23 09:12:51 +01:00
util.c	rcu: dump vmalloc memory info safely	2023-09-13 09:42:59 +02:00
vmalloc.c	mm/vmalloc: add a safer version of find_vm_area() for debug	2023-09-13 09:43:00 +02:00
vmpressure.c	net-memcg: Fix scope of sockmem pressure indicators	2023-09-13 09:42:33 +02:00
vmscan.c	mm, vmscan: prevent infinite loop for costly GFP_NOIO | __GFP_RETRY_MAYFAIL allocations	2024-04-03 15:19:42 +02:00
vmstat.c	…
workingset.c	mm/mglru: fix underprotected page cache	2023-12-20 17:00:26 +01:00
z3fold.c	…
zbud.c	…
zpool.c	…
zsmalloc.c	zsmalloc: allow only one active pool compaction context	2023-08-23 17:52:40 +02:00
zswap.c	mm: zswap: fix missing folio cleanup in writeback race path	2024-03-01 13:26:39 +01:00