linux-toradex.git/mm/memory.c, branch v6.8-rc2

Merge tag 'mm-stable-2024-01-08-15-31' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

2024-01-09T19:18:47+00:00

Pull MM updates from Andrew Morton:
 "Many singleton patches against the MM code. The patch series which are
  included in this merge do the following:

   - Peng Zhang has done some mapletree maintainance work in the series

	'maple_tree: add mt_free_one() and mt_attr() helpers'
	'Some cleanups of maple tree'

   - In the series 'mm: use memmap_on_memory semantics for dax/kmem'
     Vishal Verma has altered the interworking between memory-hotplug
     and dax/kmem so that newly added 'device memory' can more easily
     have its memmap placed within that newly added memory.

   - Matthew Wilcox continues folio-related work (including a few fixes)
     in the patch series

	'Add folio_zero_tail() and folio_fill_tail()'
	'Make folio_start_writeback return void'
	'Fix fault handler's handling of poisoned tail pages'
	'Convert aops->error_remove_page to ->error_remove_folio'
	'Finish two folio conversions'
	'More swap folio conversions'

   - Kefeng Wang has also contributed folio-related work in the series

	'mm: cleanup and use more folio in page fault'

   - Jim Cromie has improved the kmemleak reporting output in the series
     'tweak kmemleak report format'.

   - In the series 'stackdepot: allow evicting stack traces' Andrey
     Konovalov to permits clients (in this case KASAN) to cause eviction
     of no longer needed stack traces.

   - Charan Teja Kalla has fixed some accounting issues in the page
     allocator's atomic reserve calculations in the series 'mm:
     page_alloc: fixes for high atomic reserve caluculations'.

   - Dmitry Rokosov has added to the samples/ dorectory some sample code
     for a userspace memcg event listener application. See the series
     'samples: introduce cgroup events listeners'.

   - Some mapletree maintanance work from Liam Howlett in the series
     'maple_tree: iterator state changes'.

   - Nhat Pham has improved zswap's approach to writeback in the series
     'workload-specific and memory pressure-driven zswap writeback'.

   - DAMON/DAMOS feature and maintenance work from SeongJae Park in the
     series

	'mm/damon: let users feed and tame/auto-tune DAMOS'
	'selftests/damon: add Python-written DAMON functionality tests'
	'mm/damon: misc updates for 6.8'

   - Yosry Ahmed has improved memcg's stats flushing in the series 'mm:
     memcg: subtree stats flushing and thresholds'.

   - In the series 'Multi-size THP for anonymous memory' Ryan Roberts
     has added a runtime opt-in feature to transparent hugepages which
     improves performance by allocating larger chunks of memory during
     anonymous page faults.

   - Matthew Wilcox has also contributed some cleanup and maintenance
     work against eh buffer_head code int he series 'More buffer_head
     cleanups'.

   - Suren Baghdasaryan has done work on Andrea Arcangeli's series
     'userfaultfd move option'. UFFDIO_MOVE permits userspace heap
     compaction algorithms to move userspace's pages around rather than
     UFFDIO_COPY'a alloc/copy/free.

   - Stefan Roesch has developed a 'KSM Advisor', in the series 'mm/ksm:
     Add ksm advisor'. This is a governor which tunes KSM's scanning
     aggressiveness in response to userspace's current needs.

   - Chengming Zhou has optimized zswap's temporary working memory use
     in the series 'mm/zswap: dstmem reuse optimizations and cleanups'.

   - Matthew Wilcox has performed some maintenance work on the writeback
     code, both code and within filesystems. The series is 'Clean up the
     writeback paths'.

   - Andrey Konovalov has optimized KASAN's handling of alloc and free
     stack traces for secondary-level allocators, in the series 'kasan:
     save mempool stack traces'.

   - Andrey also performed some KASAN maintenance work in the series
     'kasan: assorted clean-ups'.

   - David Hildenbrand has gone to town on the rmap code. Cleanups, more
     pte batching, folio conversions and more. See the series 'mm/rmap:
     interface overhaul'.

   - Kinsey Ho has contributed some maintenance work on the MGLRU code
     in the series 'mm/mglru: Kconfig cleanup'.

   - Matthew Wilcox has contributed lruvec page accounting code cleanups
     in the series 'Remove some lruvec page accounting functions'"

* tag 'mm-stable-2024-01-08-15-31' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (361 commits)
  mm, treewide: rename MAX_ORDER to MAX_PAGE_ORDER
  mm, treewide: introduce NR_PAGE_ORDERS
  selftests/mm: add separate UFFDIO_MOVE test for PMD splitting
  selftests/mm: skip test if application doesn't has root privileges
  selftests/mm: conform test to TAP format output
  selftests: mm: hugepage-mmap: conform to TAP format output
  selftests/mm: gup_test: conform test to TAP format output
  mm/selftests: hugepage-mremap: conform test to TAP format output
  mm/vmstat: move pgdemote_* out of CONFIG_NUMA_BALANCING
  mm: zsmalloc: return -ENOSPC rather than -EINVAL in zs_malloc while size is too large
  mm/memcontrol: remove __mod_lruvec_page_state()
  mm/khugepaged: use a folio more in collapse_file()
  slub: use a folio in __kmalloc_large_node
  slub: use folio APIs in free_large_kmalloc()
  slub: use alloc_pages_node() in alloc_slab_page()
  mm: remove inc/dec lruvec page state functions
  mm: ratelimit stat flush from workingset shrinker
  kasan: stop leaking stack trace handles
  mm/mglru: remove CONFIG_TRANSPARENT_HUGEPAGE
  mm/mglru: add dummy pmd_dirty()
  ...

mm: remove unnecessary ia64 code and comment

2023-12-29T19:58:57+00:00

IA64 has gone with commit cf8e8658100d ("arch: Remove Itanium (IA-64)
architecture"), remove unnecessary ia64 special mm code and comment too.

Link: https://lkml.kernel.org/r/20231222070203.2966980-1-wangkefeng.wang@huawei.com
Signed-off-by: Kefeng Wang 
Reviewed-by: Mike Rapoport (IBM) 
Signed-off-by: Andrew Morton

mm/memory: page_try_dup_anon_rmap() -> folio_try_dup_anon_rmap_pte()

2023-12-29T19:58:56+00:00

Let's convert copy_nonpresent_pte().  While at it, perform some more folio
conversion.

Link: https://lkml.kernel.org/r/20231220224504.646757-37-david@redhat.com
Signed-off-by: David Hildenbrand 
Cc: Hugh Dickins 
Cc: Matthew Wilcox (Oracle) 
Cc: Muchun Song 
Cc: Muchun Song 
Cc: Peter Xu 
Cc: Ryan Roberts 
Cc: Yin Fengwei 
Signed-off-by: Andrew Morton

mm/rmap: convert page_dup_file_rmap() to folio_dup_file_rmap_[pte|ptes|pmd]()

2023-12-29T19:58:55+00:00

Let's convert page_dup_file_rmap() like the other rmap functions.  As
there is only a single caller, convert that single caller right away and
remove page_dup_file_rmap().

Add folio_dup_file_rmap_ptes() right away, we want to perform rmap baching
during fork() soon.

Link: https://lkml.kernel.org/r/20231220224504.646757-34-david@redhat.com
Signed-off-by: David Hildenbrand 
Cc: Hugh Dickins 
Cc: Matthew Wilcox (Oracle) 
Cc: Muchun Song 
Cc: Muchun Song 
Cc: Peter Xu 
Cc: Ryan Roberts 
Cc: Yin Fengwei 
Signed-off-by: Andrew Morton

mm/memory: page_remove_rmap() -> folio_remove_rmap_pte()

2023-12-29T19:58:54+00:00

Let's convert zap_pte_range() and closely-related tlb_flush_rmap_batch(). 
While at it, perform some more folio conversion in zap_pte_range().

Link: https://lkml.kernel.org/r/20231220224504.646757-29-david@redhat.com
Signed-off-by: David Hildenbrand 
Cc: Hugh Dickins 
Cc: Matthew Wilcox (Oracle) 
Cc: Muchun Song 
Cc: Muchun Song 
Cc: Peter Xu 
Cc: Ryan Roberts 
Cc: Yin Fengwei 
Signed-off-by: Andrew Morton

mm/memory: page_add_anon_rmap() -> folio_add_anon_rmap_pte()

2023-12-29T19:58:52+00:00

Let's convert restore_exclusive_pte() and do_swap_page().  While at it,
perform some folio conversion in restore_exclusive_pte().

Link: https://lkml.kernel.org/r/20231220224504.646757-21-david@redhat.com
Signed-off-by: David Hildenbrand 
Cc: Hugh Dickins 
Cc: Matthew Wilcox (Oracle) 
Cc: Muchun Song 
Cc: Muchun Song 
Cc: Peter Xu 
Cc: Ryan Roberts 
Cc: Yin Fengwei 
Signed-off-by: Andrew Morton

mm/memory: page_add_file_rmap() -> folio_add_file_rmap_[pte|pmd]()

2023-12-29T19:58:49+00:00

Let's convert insert_page_into_pte_locked() and do_set_pmd().  While at
it, perform some folio conversion.

Link: https://lkml.kernel.org/r/20231220224504.646757-9-david@redhat.com
Signed-off-by: David Hildenbrand 
Reviewed-by: Yin Fengwei 
Reviewed-by: Ryan Roberts 
Cc: Hugh Dickins 
Cc: Matthew Wilcox (Oracle) 
Cc: Muchun Song 
Cc: Muchun Song 
Cc: Peter Xu 
Signed-off-by: Andrew Morton

mm/rmap: convert folio_add_file_rmap_range() into folio_add_file_rmap_[pte|ptes|pmd]()

2023-12-29T19:58:48+00:00

Let's get rid of the compound parameter and instead define explicitly
which mappings we're adding.  That is more future proof, easier to read
and harder to mess up.

Use an enum to express the granularity internally.  Make the compiler
always special-case on the granularity by using __always_inline.  Replace
the "compound" check by a switch-case that will be removed by the compiler
completely.

Add plenty of sanity checks with CONFIG_DEBUG_VM.  Replace the
folio_test_pmd_mappable() check by a config check in the caller and sanity
checks.  Convert the single user of folio_add_file_rmap_range().

While at it, consistently use "int" instead of "unisgned int" in rmap code
when dealing with mapcounts and the number of pages.

This function design can later easily be extended to PUDs and to batch
PMDs.  Note that for now we don't support anything bigger than PMD-sized
folios (as we cleanly separated hugetlb handling).  Sanity checks will
catch if that ever changes.

Next up is removing page_remove_rmap() along with its "compound" parameter
and smilarly converting all other rmap functions.

Link: https://lkml.kernel.org/r/20231220224504.646757-8-david@redhat.com
Signed-off-by: David Hildenbrand 
Reviewed-by: Yin Fengwei 
Reviewed-by: Ryan Roberts 
Cc: Hugh Dickins 
Cc: Matthew Wilcox (Oracle) 
Cc: Muchun Song 
Cc: Muchun Song 
Cc: Peter Xu 
Signed-off-by: Andrew Morton

mm: convert swap_readpage() to swap_read_folio()

2023-12-29T19:58:31+00:00

All callers have a folio, so pass it in, saving two calls to
compound_head().

Link: https://lkml.kernel.org/r/20231213215842.671461-11-willy@infradead.org
Signed-off-by: Matthew Wilcox (Oracle) 
Signed-off-by: Andrew Morton

mm: remove some calls to page_add_new_anon_rmap()

2023-12-29T19:58:25+00:00

We already have the folio in these functions, we just need to use it. 
folio_add_new_anon_rmap() didn't exist at the time they were converted to
folios.

Link: https://lkml.kernel.org/r/20231211162214.2146080-5-willy@infradead.org
Signed-off-by: Matthew Wilcox (Oracle) 
Reviewed-by: David Hildenbrand 
Signed-off-by: Andrew Morton