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David Hildenbrand cfeed8ffe5 mm/swap: stop using page->private on tail pages for THP_SWAP 
Patch series "mm/swap: stop using page->private on tail pages for THP_SWAP
+ cleanups".

This series stops using page->private on tail pages for THP_SWAP, replaces
folio->private by folio->swap for swapcache folios, and starts using
"new_folio" for tail pages that we are splitting to remove the usage of
page->private for swapcache handling completely.


This patch (of 4):

Let's stop using page->private on tail pages, making it possible to just
unconditionally reuse that field in the tail pages of large folios.

The remaining usage of the private field for THP_SWAP is in the THP
splitting code (mm/huge_memory.c), that we'll handle separately later.

Update the THP_SWAP documentation and sanity checks in mm_types.h and
__split_huge_page_tail().

[david@redhat.com: stop using page->private on tail pages for THP_SWAP]
  Link: https://lkml.kernel.org/r/6f0a82a3-6948-20d9-580b-be1dbf415701@redhat.com
Link: https://lkml.kernel.org/r/20230821160849.531668-1-david@redhat.com
Link: https://lkml.kernel.org/r/20230821160849.531668-2-david@redhat.com
Signed-off-by: David Hildenbrand <david@redhat.com>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>	[arm64]
Reviewed-by: Yosry Ahmed <yosryahmed@google.com>
Cc: Dan Streetman <ddstreet@ieee.org>
Cc: Hugh Dickins <hughd@google.com>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: Peter Xu <peterx@redhat.com>
Cc: Seth Jennings <sjenning@redhat.com>
Cc: Vitaly Wool <vitaly.wool@konsulko.com>
Cc: Will Deacon <will@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2023-08-24 16:20:28 -07:00
..
damon merge mm-hotfixes-stable into mm-stable to pick up depended-upon changes 2023-08-21 14:26:20 -07:00
kasan kasan, slub: fix HW_TAGS zeroing with slub_debug 2023-07-08 09:29:32 -07:00
kfence mm: kfence: allocate kfence_metadata at runtime 2023-08-18 10:12:39 -07:00
kmsan mm: kmsan: use helper macros PAGE_ALIGN and PAGE_ALIGN_DOWN 2023-08-21 13:37:29 -07:00
backing-dev.c writeback: remove redundant checks for root memcg 2023-08-21 13:37:48 -07:00
balloon_compaction.c
bootmem_info.c
cma.c mm: cma: print cma name as well in cma_alloc debug 2023-08-18 10:12:12 -07:00
cma.h
cma_debug.c
cma_sysfs.c
compaction.c merge mm-hotfixes-stable into mm-stable to pick up depended-upon changes 2023-08-21 14:26:20 -07:00
debug.c mm: update validate_mm() to use vma iterator 2023-06-09 16:25:31 -07:00
debug_page_alloc.c mm: page_alloc: split out DEBUG_PAGEALLOC 2023-06-09 16:25:23 -07:00
debug_page_ref.c
debug_vm_pgtable.c mm: change pudp_huge_get_and_clear_full take vm_area_struct as arg 2023-08-18 10:12:53 -07:00
dmapool.c dmapool: create/destroy cleanup 2023-06-09 16:25:17 -07:00
dmapool_test.c
early_ioremap.c mm/early_ioremap.c: improve the execution efficiency of early_ioremap_setup() 2023-06-09 16:25:56 -07:00
fadvise.c mm: remove unnecessary pagevec includes 2023-06-23 16:59:31 -07:00
fail_page_alloc.c mm: page_alloc: split out FAIL_PAGE_ALLOC 2023-06-09 16:25:23 -07:00
failslab.c
filemap.c filemap: batch PTE mappings 2023-08-24 16:20:26 -07:00
folio-compat.c
gup.c mm/gup: don't implicitly set FOLL_HONOR_NUMA_FAULT 2023-08-21 14:28:41 -07:00
gup_test.c Merge mm-hotfixes-stable into mm-stable to pick up depended-upon changes. 2023-06-23 16:58:19 -07:00
gup_test.h
highmem.c mm: ptep_get() conversion 2023-06-19 16:19:25 -07:00
hmm.c mm: enable page walking API to lock vmas during the walk 2023-08-21 13:07:20 -07:00
huge_memory.c mm/swap: stop using page->private on tail pages for THP_SWAP 2023-08-24 16:20:28 -07:00
hugetlb.c hugetlb: clear flags in tail pages that will be freed individually 2023-08-24 16:20:15 -07:00
hugetlb_cgroup.c
hugetlb_vmemmap.c mm: hugetlb_vmemmap: fix a race between vmemmap pmd split 2023-08-18 10:12:14 -07:00
hugetlb_vmemmap.h
hwpoison-inject.c
init-mm.c mm: move dummy_vm_ops out of a header 2023-08-21 13:37:46 -07:00
internal.h mm: free up a word in the first tail page 2023-08-21 14:28:45 -07:00
interval_tree.c
io-mapping.c
ioremap.c mm: ioremap: remove unneeded ioremap_allowed and iounmap_allowed 2023-08-18 10:12:36 -07:00
Kconfig mm/memory_hotplug: simplify ARCH_MHP_MEMMAP_ON_MEMORY_ENABLE kconfig 2023-08-21 13:37:48 -07:00
Kconfig.debug mm: page_table_check: Make it dependent on EXCLUSIVE_SYSTEM_RAM 2023-05-29 16:14:28 +01:00
khugepaged.c mm/khugepaged: fix collapse_pte_mapped_thp() versus uffd 2023-08-24 16:20:15 -07:00
kmemleak.c Rename kmemleak_initialized to kmemleak_late_initialized 2023-08-21 13:38:02 -07:00
ksm.c merge mm-hotfixes-stable into mm-stable to pick up depended-upon changes 2023-08-21 14:26:20 -07:00
list_lru.c
maccess.c
madvise.c swap: remove remnants of polling from read_swap_cache_async 2023-08-24 16:20:16 -07:00
Makefile mm: kill frontswap 2023-08-21 13:37:26 -07:00
mapping_dirty_helpers.c mm: ptep_get() conversion 2023-06-19 16:19:25 -07:00
memblock.c mm: disable kernelcore=mirror when no mirror memory 2023-08-21 13:37:43 -07:00
memcontrol.c mm: memcg: use rstat for non-hierarchical stats 2023-08-24 16:20:18 -07:00
memfd.c memfd: replace ratcheting feature from vm.memfd_noexec with hierarchy 2023-08-21 13:37:59 -07:00
memory-failure.c mm: memory-failure: fix potential page refcnt leak in memory_failure() 2023-08-24 16:20:16 -07:00
memory-tiers.c memory tier: use helper macro __ATTR_RW() 2023-08-18 10:12:38 -07:00
memory.c mm/swap: stop using page->private on tail pages for THP_SWAP 2023-08-24 16:20:28 -07:00
memory_hotplug.c mm/memory_hotplug: embed vmem_altmap details in memory block 2023-08-21 13:37:49 -07:00
mempolicy.c mm: convert prep_transhuge_page() to folio_prep_large_rmappable() 2023-08-21 14:28:43 -07:00
mempool.c
memremap.c
memtest.c mm: memtest: convert to memtest_report_meminfo() 2023-08-21 13:37:47 -07:00
migrate.c migrate: use folio_set_bh() instead of set_bh_page() 2023-08-18 10:12:30 -07:00
migrate_device.c merge mm-hotfixes-stable into mm-stable to pick up depended-upon changes 2023-08-21 14:26:20 -07:00
mincore.c mm: enable page walking API to lock vmas during the walk 2023-08-21 13:07:20 -07:00
mlock.c merge mm-hotfixes-stable into mm-stable to pick up depended-upon changes 2023-08-21 14:26:20 -07:00
mm_init.c mm/mm_init: use helper macro BITS_PER_LONG and BITS_PER_BYTE 2023-08-21 13:37:47 -07:00
mm_slot.h
mmap.c mm: move vma locking out of vma_prepare and dup_anon_vma 2023-08-21 13:37:46 -07:00
mmap_lock.c
mmu_gather.c
mmu_notifier.c mmu_notifiers: rename invalidate_range notifier 2023-08-18 10:12:41 -07:00
mmzone.c
mprotect.c merge mm-hotfixes-stable into mm-stable to pick up depended-upon changes 2023-08-21 14:26:20 -07:00
mremap.c mm/huge pud: use transparent huge pud helpers only with CONFIG_TRANSPARENT_HUGEPAGE 2023-08-18 10:12:54 -07:00
msync.c
nommu.c mm/nommu.c: use helper macro K() 2023-08-21 13:37:44 -07:00
oom_kill.c mm: remove redundant K() macro definition 2023-08-21 13:37:44 -07:00
page-writeback.c writeback: account the number of pages written back 2023-07-08 09:29:30 -07:00
page_alloc.c mm: add large_rmappable page flag 2023-08-21 14:28:44 -07:00
page_counter.c
page_ext.c mm/page_ext: move functions around for minor cleanups to page_ext 2023-08-18 10:12:31 -07:00
page_idle.c
page_io.c zswap: make zswap_load() take a folio 2023-08-21 13:37:27 -07:00
page_isolation.c mm/hugetlb: get rid of page_hstate() 2023-08-18 10:12:39 -07:00
page_owner.c mm/page_ext: use page_ext_data helper in page_owner 2023-08-21 13:37:27 -07:00
page_poison.c mm/page_poison: remove unused page_ext.h from page_poison 2023-08-21 13:37:30 -07:00
page_reporting.c
page_reporting.h
page_table_check.c mm: convert page_table_check_pte_set() to page_table_check_ptes_set() 2023-08-24 16:20:18 -07:00
page_vma_mapped.c mm: correct stale comment of function check_pte 2023-08-18 10:12:13 -07:00
pagewalk.c mm: enable page walking API to lock vmas during the walk 2023-08-21 13:07:20 -07:00
percpu-internal.h percpu-internal/pcpu_chunk: re-layout pcpu_chunk structure to reduce false sharing 2023-06-19 16:19:29 -07:00
percpu-km.c
percpu-stats.c
percpu-vm.c
percpu.c
pgalloc-track.h
pgtable-generic.c mm/pgtable: notes on pte_offset_map[_lock]() 2023-08-18 10:12:25 -07:00
process_vm_access.c mm/gup: remove unused vmas parameter from pin_user_pages_remote() 2023-06-09 16:25:25 -07:00
ptdump.c mm: ptdump should use ptep_get_lockless() 2023-06-19 16:19:24 -07:00
readahead.c mm: remove unnecessary pagevec includes 2023-06-23 16:59:31 -07:00
rmap.c mm/swap: stop using page->private on tail pages for THP_SWAP 2023-08-24 16:20:28 -07:00
rodata_test.c
secretmem.c mm/secretmem: use a folio in secretmem_fault() 2023-08-21 13:38:02 -07:00
shmem.c merge mm-hotfixes-stable into mm-stable to pick up depended-upon changes 2023-08-24 15:25:56 -07:00
show_mem.c mm,thp: no space after colon in Mem-Info fields 2023-08-21 13:38:01 -07:00
shrinker_debug.c Revert "mm: shrinkers: make count and scan in shrinker debugfs lockless" 2023-06-19 13:19:34 -07:00
shuffle.c
shuffle.h
slab.c slab updates for 6.5 2023-06-29 16:34:12 -07:00
slab.h kasan, slub: fix HW_TAGS zeroing with slub_debug 2023-07-08 09:29:32 -07:00
slab_common.c slab updates for 6.5 2023-06-29 16:34:12 -07:00
slub.c slab updates for 6.5 2023-06-29 16:34:12 -07:00
sparse-vmemmap.c mm/vmemmap: allow architectures to override how vmemmap optimization works 2023-08-18 10:12:53 -07:00
sparse.c mm/sparse: remove redundant judgments from macro for_each_present_section_nr 2023-08-18 10:12:14 -07:00
swap.c mm: remove references to pagevec 2023-06-23 16:59:30 -07:00
swap.h swap: remove remnants of polling from read_swap_cache_async 2023-08-24 16:20:16 -07:00
swap_cgroup.c
swap_slots.c
swap_state.c mm/swap: stop using page->private on tail pages for THP_SWAP 2023-08-24 16:20:28 -07:00
swapfile.c mm/swap: stop using page->private on tail pages for THP_SWAP 2023-08-24 16:20:28 -07:00
truncate.c mm: merge folio_has_private()/filemap_release_folio() call pairs 2023-08-18 10:12:12 -07:00
usercopy.c
userfaultfd.c mm: userfaultfd: support UFFDIO_POISON for hugetlbfs 2023-08-18 10:12:17 -07:00
util.c mm: remove ARCH_IMPLEMENTS_FLUSH_DCACHE_FOLIO 2023-08-24 16:20:19 -07:00
vmalloc.c mm: add a call to flush_cache_vmap() in vmap_pfn() 2023-08-21 13:07:21 -07:00
vmpressure.c
vmscan.c merge mm-hotfixes-stable into mm-stable to pick up depended-upon changes 2023-08-21 14:26:20 -07:00
vmstat.c mm/vmstat: remove unused page_ext.h from vmstat 2023-08-21 13:37:30 -07:00
workingset.c mm: memcg: use rstat for non-hierarchical stats 2023-08-24 16:20:18 -07:00
z3fold.c mm/z3fold: remove obsolete comment for struct z3fold_pool 2023-08-21 13:37:51 -07:00
zbud.c mm: zswap: remove shrink from zpool interface 2023-06-19 16:19:27 -07:00
zpool.c mm: zswap: remove shrink from zpool interface 2023-06-19 16:19:27 -07:00
zsmalloc.c merge mm-hotfixes-stable into mm-stable to pick up depended-upon changes 2023-08-21 14:26:20 -07:00
zswap.c mm: zswap: update comment for struct zswap_entry 2023-08-21 13:37:47 -07:00