* [GIT PULL] MM updates for 6.19-rc1
@ 2025-12-04 5:29 Andrew Morton
2025-12-05 21:56 ` Linus Torvalds
2025-12-05 22:14 ` pr-tracker-bot
0 siblings, 2 replies; 5+ messages in thread
From: Andrew Morton @ 2025-12-04 5:29 UTC (permalink / raw)
To: Linus Torvalds; +Cc: linux-mm, linux-kernel, mm-commits
Linus, please merge this main batch of MM updates for the 6.19-rc
cycle. There will be another much smaller MM batch next week.
Thanks.
Merge failures which I am seeing and their linux-next resolutions are
as follows:
arch/arm64/mm/mmu.c, vs arm64 tree:
https://lkml.kernel.org/r/20251114112144.366698c7@canb.auug.org.au
include/linux/memory.h, vs s390 tree:
https://lkml.kernel.org/r/20251103100750.4522060e@canb.auug.org.au
mm/memory.c, vs arm64 tree:
https://lkml.kernel.org/r/20251120102532.670ba5b6@canb.auug.org.au
mm/secretmem.c, vs vfs-brauner tree:
https://lkml.kernel.org/r/20251125122934.36f75838@canb.auug.org.au
Forthcoming merge failures and their linux-next resolutions are as follows:
arch/riscv/include/asm/hwcap.h, vs risc-v tree:
https://lkml.kernel.org/r/20251124120543.7dee3c33@canb.auug.org.au
arch/riscv/include/asm/hwcap.h, vs risc-v tree:
https://lkml.kernel.org/r/20251126094830.3b3ed57c@canb.auug.org.au
https://lkml.kernel.org/r/20251128101000.151a81f7@canb.auug.org.au
include/linux/mm.h, vs risc-v tree:
https://lkml.kernel.org/r/20251128102707.15b3f283@canb.auug.org.au
Forthcoming build failures and their linux-next resolutions are as follows:
drivers/vfio/pci/nvgrace-gpu/main.c, vs vfio tree:
https://lkml.kernel.org/r/20251201114439.4fab07f6@canb.auug.org.au
The following changes since commit 7c9580f44f90f7a4c11fc7831efe323ebe446091:
mm/filemap: fix logic around SIGBUS in filemap_map_pages() (2025-11-24 14:25:18 -0800)
are available in the Git repository at:
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm tags/mm-stable-2025-12-03-21-26
for you to fetch changes up to faf3c923523e5c8fc3baaa413d62e913774ae52f:
mm: fix vma_start_write_killable() signal handling (2025-11-29 10:41:11 -0800)
----------------------------------------------------------------
Significant patch series in this merge are as follows:
- The 10 patch series "__vmalloc()/kvmalloc() and no-block support" from
Uladzislau Rezki reworks the vmalloc() code to support non-blocking
allocations (GFP_ATOIC, GFP_NOWAIT).
- The 2 patch series "ksm: fix exec/fork inheritance" from xu xin fixes
a rare case where the KSM MMF_VM_MERGE_ANY prctl state is not inherited
across fork/exec.
- The 4 patch series "mm/zswap: misc cleanup of code and documentations"
from SeongJae Park does some light maintenance work on the zswap code.
- The 5 patch series "mm/page_owner: add debugfs files 'show_handles'
and 'show_stacks_handles'" from Mauricio Faria de Oliveira enhances the
/sys/kernel/debug/page_owner debug feature. It adds unique identifiers
to differentiate the various stack traces so that userspace monitoring
tools can better match stack traces over time.
- The 2 patch series "mm/page_alloc: pcp->batch cleanups" from Joshua
Hahn makes some minor alterations to the page allocator's per-cpu-pages
feature.
- The 2 patch series "Improve UFFDIO_MOVE scalability by removing
anon_vma lock" from Lokesh Gidra addresses a scalability issue in
userfaultfd's UFFDIO_MOVE operation.
- The 2 patch series "kasan: cleanups for kasan_enabled() checks" from
Sabyrzhan Tasbolatov performs some cleanup in the KASAN code.
- The 2 patch series "drivers/base/node: fold node register and
unregister functions" from Donet Tom cleans up the NUMA node handling
code a little.
- The 4 patch series "mm: some optimizations for prot numa" from Kefeng
Wang provides some cleanups and small optimizations to the NUMA
allocation hinting code.
- The 5 patch series "mm/page_alloc: Batch callers of
free_pcppages_bulk" from Joshua Hahn addresses long lock hold times at
boot on large machines. These were causing (harmless) softlockup
warnings.
- The 2 patch series "optimize the logic for handling dirty file folios
during reclaim" from Baolin Wang removes some now-unnecessary work from
page reclaim.
- The 10 patch series "mm/damon: allow DAMOS auto-tuned for per-memcg
per-node memory usage" from SeongJae Park enhances the DAMOS auto-tuning
feature.
- The 2 patch series "mm/damon: fixes for address alignment issues in
DAMON_LRU_SORT and DAMON_RECLAIM" from Quanmin Yan fixes DAMON_LRU_SORT
and DAMON_RECLAIM with certain userspace configuration.
- The 15 patch series "expand mmap_prepare functionality, port more
users" from Lorenzo Stoakes enhances the new(ish)
file_operations.mmap_prepare() method and ports additional callsites
from the old ->mmap() over to ->mmap_prepare().
- The 8 patch series "Fix stale IOTLB entries for kernel address space"
from Lu Baolu fixes a bug (and possible security issue on non-x86) in
the IOMMU code. In some situations the IOMMU could be left hanging onto
a stale kernel pagetable entry.
- The 4 patch series "mm/huge_memory: cleanup __split_unmapped_folio()"
from Wei Yang cleans up and optimizes the folio splitting code.
- The 5 patch series "mm, swap: misc cleanup and bugfix" from Kairui
Song implements some cleanups and a minor fix in the swap discard code.
- The 8 patch series "mm/damon: misc documentation fixups" from SeongJae
Park does as advertised.
- The 9 patch series "mm/damon: support pin-point targets removal" from
SeongJae Park permits userspace to remove a specific monitoring target
in the middle of the current targets list.
- The 2 patch series "mm: MISC follow-up patches for linux/pgalloc.h"
from Harry Yoo implements a couple of cleanups related to mm header file
inclusion.
- The 2 patch series "mm/swapfile.c: select swap devices of default
priority round robin" from Baoquan He improves the selection of swap
devices for NUMA machines.
- The 3 patch series "mm: Convert memory block states (MEM_*) macros to
enums" from Israel Batista changes the memory block labels from macros
to enums so they will appear in kernel debug info.
- The 3 patch series "ksm: perform a range-walk to jump over holes in
break_ksm" from Pedro Demarchi Gomes addresses an inefficiency when KSM
unmerges an address range.
- The 22 patch series "mm/damon/tests: fix memory bugs in kunit tests"
from SeongJae Park fixes leaks and unhandled malloc() failures in DAMON
userspace unit tests.
- The 2 patch series "some cleanups for pageout()" from Baolin Wang
cleans up a couple of minor things in the page scanner's
writeback-for-eviction code.
- The 2 patch series "mm/hugetlb: refactor sysfs/sysctl interfaces" from
Hui Zhu moves hugetlb's sysfs/sysctl handling code into a new file.
- The 9 patch series "introduce VM_MAYBE_GUARD and make it sticky" from
Lorenzo Stoakes makes the VMA guard regions available in /proc/pid/smaps
and improves the mergeability of guarded VMAs.
- The 2 patch series "mm: perform guard region install/remove under VMA
lock" from Lorenzo Stoakes reduces mmap lock contention for callers
performing VMA guard region operations.
- The 2 patch series "vma_start_write_killable" from Matthew Wilcox
starts work in permitting applications to be killed when they are
waiting on a read_lock on the VMA lock.
- The 11 patch series "mm/damon/tests: add more tests for online
parameters commit" from SeongJae Park adds additional userspace testing
of DAMON's "commit" feature.
- The 9 patch series "mm/damon: misc cleanups" from SeongJae Park does
that.
- The 2 patch series "make VM_SOFTDIRTY a sticky VMA flag" from Lorenzo
Stoakes addresses the possible loss of a VMA's VM_SOFTDIRTY flag when
that VMA is merged with another.
- The 16 patch series "mm: support device-private THP" from Balbir Singh
introduces support for Transparent Huge Page (THP) migration in zone
device-private memory.
- The 3 patch series "Optimize folio split in memory failure" from Zi
Yan optimizes folio split operations in the memory failure code.
- The 2 patch series "mm/huge_memory: Define split_type and consolidate
split support checks" from Wei Yang provides some more cleanups in the
folio splitting code.
- The 16 patch series "mm: remove is_swap_[pte, pmd]() + non-swap
entries, introduce leaf entries" from Lorenzo Stoakes cleans up our
handling of pagetable leaf entries by introducing the concept of
'software leaf entries', of type softleaf_t.
- The 4 patch series "reparent the THP split queue" from Muchun Song
reparents the THP split queue to its parent memcg. This is in
preparation for addressing the long-standing "dying memcg" problem,
wherein dead memcg's linger for too long, consuming memory resources.
- The 3 patch series "unify PMD scan results and remove redundant
cleanup" from Wei Yang does a little cleanup in the hugepage collapse
code.
- The 6 patch series "zram: introduce writeback bio batching" from
Sergey Senozhatsky improves zram writeback efficiency by introducing
batched bio writeback support.
- The 4 patch series "memcg: cleanup the memcg stats interfaces" from
Shakeel Butt cleans up our handling of the interrupt safety of some
memcg stats.
- The 4 patch series "make vmalloc gfp flags usage more apparent" from
Vishal Moola cleans up vmalloc's handling of incoming GFP flags.
- The 6 patch series "mm: Add soft-dirty and uffd-wp support for RISC-V"
from Chunyan Zhang teches soft dirty and userfaultfd write protect
tracking to use RISC-V's Svrsw60t59b extension.
- The 5 patch series "mm: swap: small fixes and comment cleanups" from
Youngjun Park fixes a small bug and cleans up some of the swap code.
- The 4 patch series "initial work on making VMA flags a bitmap" from
Lorenzo Stoakes starts work on converting the vma struct's flags to a
bitmap, so we stop running out of them, especially on 32-bit.
- The 2 patch series "mm/swapfile: fix and cleanup swap list iterations"
from Youngjun Park addresses a possible bug in the swap discard code and
cleans things up a little.
----------------------------------------------------------------
Andrew Morton (2):
Merge branch 'mm-hotfixes-stable' into mm-stable to be able to merge "mm: introduce deferred freeing for kernel page tables" into mm-stable.
Merge branch 'mm-hotfixes-stable' into mm-stable in order to merge "mm/huge_memory: only get folio_order() once during __folio_split()" into mm-stable.
Ankit Agrawal (3):
mm: change ghes code to allow poison of non-struct pfn
mm: handle poisoning of pfn without struct pages
vfio/nvgrace-gpu: register device memory for poison handling
Ankit Khushwaha (2):
selftest/mm: fix pointer comparison in mremap_test
selftests/mm/uffd: initialize char variable to Null
Anshuman Khandual (6):
mm/thp: drop follow_devmap_pmd() default stub
mm/ptdump: replace READ_ONCE() with standard page table accessors
mm: replace READ_ONCE() with standard page table accessors
mm/dirty: replace READ_ONCE() with pudp_get()
mm/debug_vm_pgtable: add [pte|pmd]_mkwrite_novma() tests
mm: make INVALID_PHYS_ADDR a generic macro
Bagas Sanjaya (1):
vmalloc: separate gfp_mask adjunctive parentheses in __vmalloc_node_noprof() kernel-doc comment
Balbir Singh (16):
mm/zone_device: support large zone device private folios
mm/zone_device: rename page_free callback to folio_free
mm/huge_memory: add device-private THP support to PMD operations
mm/rmap: extend rmap and migration support device-private entries
mm/huge_memory: implement device-private THP splitting
mm/migrate_device: handle partially mapped folios during collection
mm/migrate_device: implement THP migration of zone device pages
mm/memory/fault: add THP fault handling for zone device private pages
lib/test_hmm: add zone device private THP test infrastructure
mm/memremap: add driver callback support for folio splitting
mm/migrate_device: add THP splitting during migration
lib/test_hmm: add large page allocation failure testing
selftests/mm/hmm-tests: new tests for zone device THP migration
selftests/mm/hmm-tests: new throughput tests including THP
gpu/drm/nouveau: enable THP support for GPU memory migration
mm/huge_memory.c: introduce folio_split_unmapped
Baokun Li (1):
mm/page_alloc: don't warn about large allocations with __GFP_NOFAIL
Baolin Wang (5):
mm: vmscan: filter out the dirty file folios for node_reclaim()
mm: vmscan: simplify the logic for activating dirty file folios
mm: vmscan: remove folio_test_private() check in pageout()
mm: vmscan: simplify the folio refcount check in pageout()
mm: shmem: allow fallback to smaller large orders for tmpfs mmap() access
Baoquan He (2):
mm/swap: do not choose swap device according to numa node
mm/swap: select swap device with default priority round robin
Breno Leitao (1):
mm/kfence: add reboot notifier to disable KFENCE on shutdown
Chen Ridong (1):
memcg: remove inc/dec_lruvec_kmem_state helpers
Chu Guangqing (1):
zram: fix a spelling mistake
Chunyan Zhang (6):
mm: softdirty: add pgtable_supports_soft_dirty()
mm: userfaultfd: add pgtable_supports_uffd_wp()
riscv: add RISC-V Svrsw60t59b extension support
riscv: mm: add soft-dirty page tracking support
riscv: mm: add userfaultfd write-protect support
dt-bindings: riscv: Add Svrsw60t59b extension description
Claudio Imbrenda (1):
KVM: s390: fix missing present bit for gmap puds
Dan Carpenter (1):
mm/damon/tests/sysfs-kunit: fix use after free on error path
Dave Hansen (5):
mm: add a ptdesc flag to mark kernel page tables
mm: actually mark kernel page table pages
x86/mm: use 'ptdesc' when freeing PMD pages
mm: introduce pure page table freeing function
mm: introduce deferred freeing for kernel page tables
Dmitry Ilvokhin (1):
mm: shmem/tmpfs hugepage defaults config choice
Donet Tom (2):
drivers/base/node: fold register_node() into register_one_node()
drivers/base/node: fold unregister_node() into unregister_one_node()
Fushuai Wang (1):
mm/vmscan: remove redundant __GFP_NOWARN
Geert Uytterhoeven (1):
mm: fix DEBUG_RODATA_TEST indentation in Kconfig
Gregory Price (1):
hugetlb: add __read_mostly to sysctl_hugetlb_shm_group
Harry Yoo (2):
MAINTAINERS: add include/linux/pgalloc.h to MM CORE section
treewide: include linux/pgalloc.h instead of asm/pgalloc.h
Huacai Chen (2):
mm: remove the BOUNCE config option
mm: remove unnecessary __GFP_HIGHMEM in __p*d_alloc_one_*()
Hui Zhu (2):
mm/hugetlb: extract sysfs into hugetlb_sysfs.c
mm/hugetlb: extract sysctl into hugetlb_sysctl.c
Israel Batista (3):
mm: convert memory block states (MEM_*) macros to enum
mm: change type of state in struct memory_block
mm: change type of parameter for memory_notify
Jiayuan Chen (2):
mm: vmstat: output reserved_highatomic and free_highatomic in zoneinfo
mm/vmscan: skip increasing kswapd_failures when reclaim was boosted
Jing Su (1):
mm/vmstat: fix indentation in fold_diff function
Joshua Hahn (5):
mm/page_alloc: clarify batch tuning in zone_batchsize
mm/page_alloc: prevent reporting pcp->batch = 0
mm/page_alloc/vmstat: simplify refresh_cpu_vm_stats change detection
mm/page_alloc: batch page freeing in decay_pcp_high
mm/page_alloc: batch page freeing in free_frozen_page_commit
Kairui Song (5):
mm, swap: do not perform synchronous discard during allocation
mm, swap: rename helper for setup bad slots
mm, swap: cleanup swap entry allocation parameter
mm/migrate, swap: drop usage of folio_index
mm, swap: remove redundant argument for isolating a cluster
Kefeng Wang (5):
mm: mprotect: always skip dma pinned folio in prot_numa_skip()
mm: mprotect: avoid unnecessary struct page accessing if pte_protnone()
mm: mprotect: convert to folio_can_map_prot_numa()
mm: huge_memory: use folio_can_map_prot_numa() for pmd folio
mm: kill mm_wr_locked from unmap_vmas() and unmap_single_vma()
Lance Yang (1):
mm/khugepaged: guard is_zero_pfn() calls with pte_present()
Leon Hwang (1):
mm/khugepaged: factor out common logic in [scan,alloc]_sleep_millisecs_store()
Lokesh Gidra (2):
mm: always call rmap_walk() on locked folios
mm/userfaultfd: don't lock anon_vma when performing UFFDIO_MOVE
Lorenzo Stoakes (51):
mm/shmem: update shmem to use mmap_prepare
device/dax: update devdax to use mmap_prepare
mm/vma: remove unused function, make internal functions static
mm: add vma_desc_size(), vma_desc_pages() helpers
relay: update relay to use mmap_prepare
mm/vma: rename __mmap_prepare() function to avoid confusion
mm: add remap_pfn_range_prepare(), remap_pfn_range_complete()
mm: abstract io_remap_pfn_range() based on PFN
mm: introduce io_remap_pfn_range_[prepare, complete]()
mm: add ability to take further action in vm_area_desc
doc: update porting, vfs documentation for mmap_prepare actions
mm/hugetlbfs: update hugetlbfs to use mmap_prepare
mm: add shmem_zero_setup_desc()
mm: update mem char driver to use mmap_prepare
mm: update resctl to use mmap_prepare
mm/vma: small VMA lock cleanups
mm: introduce VM_MAYBE_GUARD and make visible in /proc/$pid/smaps
mm: add atomic VMA flags and set VM_MAYBE_GUARD as such
mm: update vma_modify_flags() to handle residual flags, document
mm: implement sticky VMA flags
mm: introduce copy-on-fork VMAs and make VM_MAYBE_GUARD one
mm: set the VM_MAYBE_GUARD flag on guard region install
tools/testing/vma: add VMA sticky userland tests
tools/testing/selftests/mm: add MADV_COLLAPSE test case
tools/testing/selftests/mm: add smaps visibility guard region test
mm: rename walk_page_range_mm()
mm/madvise: allow guard page install/remove under VMA lock
mm: propagate VM_SOFTDIRTY on merge
testing/selftests/mm: add soft-dirty merge self-test
mm: correctly handle UFFD PTE markers
mm: introduce leaf entry type and use to simplify leaf entry logic
mm: avoid unnecessary uses of is_swap_pte()
mm: eliminate is_swap_pte() when softleaf_from_pte() suffices
mm: use leaf entries in debug pgtable + remove is_swap_pte()
fs/proc/task_mmu: refactor pagemap_pmd_range()
mm: avoid unnecessary use of is_swap_pmd()
mm/huge_memory: refactor copy_huge_pmd() non-present logic
mm/huge_memory: refactor change_huge_pmd() non-present logic
mm: replace pmd_to_swp_entry() with softleaf_from_pmd()
mm: introduce pmd_is_huge() and use where appropriate
mm: remove remaining is_swap_pmd() users and is_swap_pmd()
mm: remove non_swap_entry() and use softleaf helpers instead
mm: remove is_hugetlb_entry_[migration, hwpoisoned]()
mm: eliminate further swapops predicates
mm: replace remaining pte_to_swp_entry() with softleaf_from_pte()
tools/testing/vma: add missing stub
mm: declare VMA flags by bit
mm: simplify and rename mm flags function for clarity
tools/testing/vma: eliminate dependency on vma->__vm_flags
mm: introduce VMA flags bitmap type
fs/proc/task_mmu.c: fix make_uffd_wp_huge_pte() huge pte handling
Lu Baolu (3):
iommu: disable SVA when CONFIG_X86 is set
x86/mm: use pagetable_free()
iommu/sva: invalidate stale IOTLB entries for kernel address space
Ma Ke (1):
mm/hmm/test: fix error handling in dmirror_device_init
Matthew Brost (1):
selftests/mm/hmm-tests: partial unmap, mremap and anon_write tests
Matthew Wilcox (Oracle) (8):
hugetlb: optimise hugetlb_folio_init_tail_vmemmap()
migrate: optimise alloc_migration_target()
memory_hotplug: optimise try_offline_memory_block()
mm: constify __dump_folio() arguments
mm: add vma_start_write_killable()
mm: use vma_start_write_killable() in dup_mmap()
mm: tweak __vma_enter_locked()
mm: fix vma_start_write_killable() signal handling
Mauricio Faria de Oliveira (5):
mm/page_owner: introduce struct stack_print_ctx
mm/page_owner: add struct stack_print_ctx.flags
mm/page_owner: add debugfs file 'show_handles'
mm/page_owner: add debugfs file 'show_stacks_handles'
mm/page_owner: update Documentation with 'show_handles' and 'show_stacks_handles'
Mehdi Ben Hadj Khelifa (2):
mm/vmalloc: use kmalloc_array() instead of kmalloc()
selftests/mm/uffd: remove static address usage in shmem_allocate_area()
Muchun Song (3):
mm: thp: replace folio_memcg() with folio_memcg_charged()
mm: thp: introduce folio_split_queue_lock and its variants
mm: thp: use folio_batch to handle THP splitting in deferred_split_scan()
Pedro Demarchi Gomes (3):
Revert "mm/ksm: convert break_ksm() from walk_page_range_vma() to folio_walk"
ksm: perform a range-walk in break_ksm
ksm: replace function unmerge_ksm_pages with break_ksm
Peng Li (2):
selftests/mm: gup_test: stop testing FOLL_TOUCH
selftests/mm: gup_test: fix comment regarding origin of FOLL_WRITE
Qi Zheng (2):
mm: vmstat: correct the comment above preempt_disable_nested()
mm: thp: reparent the split queue during memcg offline
Quanmin Yan (2):
mm/damon: add a min_sz_region parameter to damon_set_region_biggest_system_ram_default()
mm/damon/reclaim: use min_sz_region for core address alignment when setting regions
Richard Weinberger (1):
pagemap: update BUDDY flag documentation
Roman Gushchin (1):
mm: readahead: make thp readahead conditional to mmap_miss logic
Ryan Roberts (1):
mm: consistently use current->mm in mm_get_unmapped_area()
Sabyrzhan Tasbolatov (2):
kasan: remove __kasan_save_free_info wrapper
kasan: cleanup of kasan_enabled() checks
SeongJae Park (73):
mm/zswap: remove unnecessary dlen writes for incompressible pages
mm/zswap: fix typos: s/zwap/zswap/
mm/zswap: s/red-black tree/xarray/
Docs/admin-guide/mm/zswap: s/red-black tree/xarray/
mm/damon: document damos_quota_goal->nid use case
mm/damon: add DAMOS quota goal type for per-memcg per-node memory usage
mm/damon/core: implement DAMOS_QUOTA_NODE_MEMCG_USED_BP
mm/damon/sysfs-schemes: implement path file under quota goal directory
mm/damon/sysfs-schemes: support DAMOS_QUOTA_NODE_MEMCG_USED_BP
mm/damon/core: add DAMOS quota gaol metric for per-memcg per-numa free memory
mm/damon/sysfs-schemes: support DAMOS_QUOTA_NODE_MEMCG_FREE_BP
Docs/mm/damon/design: document DAMOS_QUOTA_NODE_MEMCG_{USED,FREE}_BP
Docs/admin-guide/mm/damon/usage: document DAMOS quota goal path file
Docs/ABI/damon: document DAMOS quota goal path file
mm/damon/core: fix wrong comment of damon_call() return timing
Docs/mm/damon/design: fix wrong link to intervals goal section
Docs/admin-guide/mm/damon/stat: fix a typo: s/sampling events/sampling interval/
Docs/admin-guide/mm/damon/usage: document empty target regions commit behavior
Docs/admin-guide/mm/damon/reclaim: document addr_unit parameter
Docs/admin-guide/mm/damon/lru_sort: document addr_unit parameter
Docs/admin-guide/mm/damon/stat: document aggr_interval_us parameter
Docs/admin-guide/mm/damon/stat: document negative idle time
mm/damon/core: add damon_target->obsolete for pin-point removal
mm/damon/sysfs: test commit input against realistic destination
mm/damon/sysfs: implement obsolete_target file
Docs/admin-guide/mm/damon/usage: document obsolete_target file
Docs/ABI/damon: document obsolete_target sysfs file
selftests/damon/_damon_sysfs: support obsolete_target file
drgn_dump_damon_status: dump damon_target->obsolete
sysfs.py: extend assert_ctx_committed() for monitoring targets
selftests/damon/sysfs: add obsolete_target test
mm/damon/tests/core-kunit: fix memory leak in damon_test_set_filters_default_reject()
mm/damon/tests/core-kunit: handle allocation failures in damon_test_regions()
mm/damon/tests/core-kunit: handle memory failure from damon_test_target()
mm/damon/tests/core-kunit: handle memory alloc failure from damon_test_aggregate()
mm/damon/tests/core-kunit: handle alloc failures on damon_test_split_at()
mm/damon/tests/core-kunit: handle alloc failures on damon_test_merge_two()
mm/damon/tests/core-kunit: handle alloc failures on dasmon_test_merge_regions_of()
mm/damon/tests/core-kunit: handle alloc failures on damon_test_split_regions_of()
mm/damon/tests/core-kunit: handle alloc failures in damon_test_ops_registration()
mm/damon/tests/core-kunit: handle alloc failures in damon_test_set_regions()
mm/damon/tests/core-kunit: handle alloc failures in damon_test_update_monitoring_result()
mm/damon/tests/core-kunit: handle alloc failure on damon_test_set_attrs()
mm/damon/tests/core-kunit: handle alloc failres in damon_test_new_filter()
mm/damon/tests/core-kunit: handle alloc failure on damos_test_commit_filter()
mm/damon/tests/core-kunit: handle alloc failures on damos_test_filter_out()
mm/damon/tests/core-kunit: handle alloc failures on damon_test_set_filters_default_reject()
mm/damon/tests/vaddr-kunit: handle alloc failures on damon_do_test_apply_three_regions()
mm/damon/tests/vaddr-kunit: handle alloc failures in damon_test_split_evenly_fail()
mm/damon/tests/vaddr-kunit: handle alloc failures on damon_test_split_evenly_succ()
mm/damon/tests/sysfs-kunit: handle alloc failures on damon_sysfs_test_add_targets()
mm/damon/tests/core-kunit: remove unnecessary damon_ctx variable on damon_test_split_at()
mm/damon/tests/core-kunit: remove unused ctx in damon_test_split_regions_of()
mm/damon/tests/core-kunit: remove dynamic allocs on damos_test_commit_filter()
mm/damon/tests/core-kunit: split out damos_test_commit_filter() core logic
mm/damon/tests/core-kunit: extend damos_test_commit_filter_for() for union fields
mm/damon/tests/core-kunit: add test cases to damos_test_commit_filter()
mm/damon/tests/core-kunit: add damos_commit_quota_goal() test
mm/damon/tests/core-kunit: add damos_commit_quota_goals() test
mm/damon/tests/core-kunit: add damos_commit_quota() test
mm/damon/core: pass migrate_dests to damos_commit_dests()
mm/damon/tests/core-kunit: add damos_commit_dests() test
mm/damon/tests/core-kunit: add damos_commit() test
mm/damon/tests/core-kunit: add damon_commit_target_regions() test
mm/damon: rename damos core filter helpers to have word core
mm/damon: rename damos->filters to damos->core_filters
mm/damon/vaddr: cleanup using pmd_trans_huge_lock()
mm/damon/vaddr: use vm_normal_folio{,_pmd}() instead of damon_get_folio()
mm/damon/vaddr: consistently use only pmd_entry for damos_migrate
mm/damon/tests/core-kunit: remove DAMON_MIN_REGION redefinition
selftests/damon/sysfs.py: merge DAMON status dumping into commitment assertion
Docs/mm/damon/maintainer-profile: fix a typo on mm-untable link
Docs/mm/damon/maintainer-profile: fix grammatical errors
Sergey Senozhatsky (6):
zram: introduce writeback bio batching
zram: add writeback batch size device attr
zram: take write lock in wb limit store handlers
zram: drop wb_limit_lock
zram: rework bdev block allocation
zram: read slot block idx under slot lock
Shakeel Butt (7):
memcg: net: track network throttling due to memcg memory pressure
memcg: manually uninline __memcg_memory_event
mm: memcg: dump memcg protection info on oom or alloc failures
memcg: use mod_node_page_state to update stats
memcg: remove __mod_lruvec_kmem_state
memcg: remove __mod_lruvec_state
memcg: remove __lruvec_stat_mod_folio
Song Hu (2):
mm/page_owner: rename proc-prefixed variables for clarity
mm/page_owner: simplify zone iteration logic in init_early_allocated_pages()
Swaraj Gaikwad (1):
mm/damon/sysfs: remove misleading todo comment in nid_show()
Uladzislau Rezki (Sony) (11):
lib/test_vmalloc: add no_block_alloc_test case
lib/test_vmalloc: remove xfail condition check
mm/vmalloc: support non-blocking GFP flags in alloc_vmap_area()
mm/vmalloc: defer freeing partly initialized vm_struct
mm/vmalloc: handle non-blocking GFP in __vmalloc_area_node()
mm/kasan: support non-blocking GFP in kasan_populate_vmalloc()
kmsan: remove hard-coded GFP_KERNEL flags
mm: skip might_alloc() warnings when PF_MEMALLOC is set
mm/vmalloc: update __vmalloc_node_range() documentation
mm: kvmalloc: add non-blocking support for vmalloc
vmalloc: update __vmalloc_node_noprof() documentation
Usama Arif (2):
mm/hugetlb: create hstate_is_gigantic_no_runtime helper
mm/hugetlb: allow overcommitting gigantic hugepages
Vishal Moola (Oracle) (5):
mm/vmalloc: request large order pages from buddy allocator
mm/vmalloc: warn on invalid vmalloc gfp flags
mm/vmalloc: add a helper to optimize vmalloc allocation gfps
mm/vmalloc: cleanup large_gfp in vm_area_alloc_pages()
mm/vmalloc: cleanup gfp flag use in new_vmap_block()
Vlastimil Babka (1):
mm/page_alloc: simplify and cleanup pcp locking
Wei Yang (12):
mm/huge_memory: avoid reinvoking folio_test_anon()
mm/huge_memory: update folio stat after successful split
mm/huge_memory: optimize and simplify folio stat update after split
mm/huge_memory: optimize old_order derivation during folio splitting
mm/huge_memory: add pmd folio to ds_queue in do_huge_zero_wp_pmd()
mm/khugepaged: unify pmd folio installation with map_anon_folio_pmd()
mm/huge_memory: only get folio_order() once during __folio_split()
mm/huge_memory: introduce enum split_type for clarity
mm/huge_memory: merge uniform_split_supported() and non_uniform_split_supported()
mm/khugepaged: remove redundant clearing of struct collapse_control
mm/khugepaged: continue to collapse on SCAN_PMD_NONE
mm/khugepaged: unify SCAN_PMD_NONE and SCAN_PMD_NULL into SCAN_NO_PTE_TABLE
William Kucharski (1):
mm: remove reference to destructor in comment in calculate_sizes()
Xie Yuanbin (1):
mm/memory-failure: remove the selection of RAS
Yadong Qi (1):
mm: vmalloc: WARN_ON if mapping size is not PAGE_SIZE aligned
Ye Liu (2):
tools/mm: use <stdbool.h> in page_owner_sort.c
tools/mm/page_owner_sort: add help option support
Youngjun Park (8):
mm/swap: fix wrong plist empty check in swap_alloc_slow()
mm, swap: fix memory leak in setup_clusters() error path
mm, swap: use SWP_SOLIDSTATE to determine if swap is rotational
mm, swap: remove redundant comment for read_swap_cache_async
mm: swap: change swap_alloc_slow() to void
mm: swap: remove scan_swap_map_slots() references from comments
mm/swapfile: fix list iteration when next node is removed during discard
mm/swapfile: use plist_for_each_entry in __folio_throttle_swaprate
Yuwen Chen (1):
zram: fix the issue that the write - back limits might overflow
Zeng Chi (1):
lib/alloc_tag: use %pe format specifier
Zhang Chujun (1):
mm/debug: fix missing space in case statement
Zi Yan (3):
mm/huge_memory: add split_huge_page_to_order()
mm/memory-failure: improve large block size folio handling
mm/huge_memory: fix kernel-doc comments for folio_split() and related
fujunjie (1):
mm/page_alloc: optimize lowmem_reserve max lookup using its semantic monotonicity
jianyun.gao (1):
mm: fix some typos in mm module
wang lian (1):
mm/khugepaged: fix comment for default scan sleep duration
xu xin (2):
mm/ksm: fix exec/fork inheritance support for prctl
selftests: update ksm inheritance tests for prctl fork/exec
.clang-format | 4 +-
Documentation/ABI/testing/sysfs-kernel-mm-damon | 13 +
Documentation/admin-guide/cgroup-v2.rst | 4 +
Documentation/admin-guide/mm/damon/lru_sort.rst | 22 +
Documentation/admin-guide/mm/damon/reclaim.rst | 22 +
Documentation/admin-guide/mm/damon/stat.rst | 35 +-
Documentation/admin-guide/mm/damon/usage.rst | 29 +-
Documentation/admin-guide/mm/index.rst | 1 -
Documentation/admin-guide/mm/pagemap.rst | 3 +-
Documentation/admin-guide/mm/swap_numa.rst | 78 --
Documentation/admin-guide/mm/transhuge.rst | 5 +
Documentation/admin-guide/mm/zswap.rst | 10 +-
.../devicetree/bindings/riscv/extensions.yaml | 6 +
Documentation/filesystems/porting.rst | 5 +
Documentation/filesystems/proc.rst | 5 +-
Documentation/filesystems/vfs.rst | 4 +
Documentation/mm/damon/design.rst | 25 +-
Documentation/mm/damon/maintainer-profile.rst | 10 +-
Documentation/mm/memory-model.rst | 2 +-
Documentation/mm/page_owner.rst | 32 +-
Documentation/mm/process_addrs.rst | 9 +-
MAINTAINERS | 6 +
arch/arm64/mm/mmu.c | 2 -
arch/csky/include/asm/pgtable.h | 3 -
arch/mips/alchemy/common/setup.c | 9 +-
arch/mips/include/asm/pgtable.h | 5 +-
arch/powerpc/kvm/book3s_hv_uvmem.c | 7 +-
arch/powerpc/platforms/pseries/pci_dlpar.c | 2 +-
arch/riscv/Kconfig | 16 +
arch/riscv/include/asm/hwcap.h | 1 +
arch/riscv/include/asm/pgtable-bits.h | 37 +
arch/riscv/include/asm/pgtable.h | 143 ++-
arch/riscv/kernel/cpufeature.c | 1 +
arch/s390/boot/vmem.c | 1 -
arch/s390/mm/gmap.c | 5 +-
arch/s390/mm/gmap_helpers.c | 20 +-
arch/s390/mm/pgtable.c | 12 +-
arch/sparc/include/asm/pgtable_32.h | 12 +-
arch/sparc/include/asm/pgtable_64.h | 12 +-
arch/sparc/kernel/sys_sparc_64.c | 6 +-
arch/x86/Kconfig | 1 +
arch/x86/kernel/cpu/sgx/driver.c | 2 +-
arch/x86/mm/init_64.c | 2 +-
arch/x86/mm/numa.c | 4 +-
arch/x86/mm/pat/set_memory.c | 2 +-
arch/x86/mm/pgtable.c | 12 +-
drivers/acpi/apei/ghes.c | 6 -
drivers/base/memory.c | 6 +-
drivers/base/node.c | 90 +-
drivers/block/zram/zram_drv.c | 483 ++++++--
drivers/block/zram/zram_drv.h | 2 +-
drivers/char/mem.c | 86 +-
drivers/dax/device.c | 37 +-
drivers/firmware/efi/arm-runtime.c | 4 +-
drivers/firmware/efi/riscv-runtime.c | 4 +-
drivers/gpu/drm/amd/amdkfd/kfd_migrate.c | 7 +-
drivers/gpu/drm/drm_pagemap.c | 12 +-
drivers/gpu/drm/nouveau/nouveau_dmem.c | 311 +++--
drivers/gpu/drm/nouveau/nouveau_svm.c | 6 +-
drivers/gpu/drm/nouveau/nouveau_svm.h | 3 +-
drivers/iommu/iommu-sva.c | 29 +-
drivers/pci/p2pdma.c | 5 +-
drivers/s390/char/sclp_sd.c | 3 +-
drivers/vdpa/vdpa_user/iova_domain.h | 2 -
drivers/vfio/pci/nvgrace-gpu/main.c | 45 +-
fs/dax.c | 2 +-
fs/hugetlbfs/inode.c | 49 +-
fs/ntfs3/file.c | 2 +-
fs/proc/inode.c | 2 +-
fs/proc/task_mmu.c | 314 ++---
fs/ramfs/file-mmu.c | 2 +-
fs/resctrl/pseudo_lock.c | 20 +-
fs/userfaultfd.c | 117 +-
include/asm-generic/hugetlb.h | 8 -
include/asm-generic/pgalloc.h | 24 +-
include/asm-generic/pgtable_uffd.h | 17 +
include/linux/damon.h | 39 +-
include/linux/fs.h | 6 +-
include/linux/gfp.h | 2 +-
include/linux/huge_mm.h | 112 +-
include/linux/hugetlb.h | 13 +-
include/linux/hugetlb_inline.h | 15 +-
include/linux/iommu.h | 4 +
include/linux/kasan.h | 20 +-
include/linux/kmsan.h | 6 +-
include/linux/ksm.h | 4 +-
include/linux/leafops.h | 619 ++++++++++
include/linux/memcontrol.h | 89 +-
include/linux/memory-failure.h | 17 +
include/linux/memory.h | 28 +-
include/linux/memremap.h | 57 +-
include/linux/migrate.h | 4 +-
include/linux/mm.h | 681 ++++++++---
include/linux/mm_inline.h | 16 +-
include/linux/mm_types.h | 156 ++-
include/linux/mmap_lock.h | 37 +-
include/linux/mmzone.h | 4 -
include/linux/node.h | 10 +-
include/linux/pgtable.h | 12 +
include/linux/sched/mm.h | 12 +-
include/linux/shmem_fs.h | 9 +-
include/linux/swap.h | 15 +-
include/linux/swapops.h | 241 +---
include/linux/userfaultfd_k.h | 96 +-
include/linux/vmalloc.h | 8 +-
include/linux/vmstat.h | 48 +-
include/net/sock.h | 6 +-
include/ras/ras_event.h | 86 --
include/trace/events/huge_memory.h | 3 +-
include/trace/events/memory-failure.h | 98 ++
include/trace/events/mmflags.h | 1 +
io_uring/memmap.c | 2 +-
kernel/bpf/arena.c | 2 +-
kernel/bpf/syscall.c | 2 +-
kernel/cgroup/cgroup.c | 1 +
kernel/dma/swiotlb.c | 2 -
kernel/fork.c | 8 +-
kernel/relay.c | 33 +-
lib/alloc_tag.c | 2 +-
lib/test_hmm.c | 457 ++++++--
lib/test_hmm_uapi.h | 3 +
lib/test_vmalloc.c | 28 +-
mm/Kconfig | 105 +-
mm/Kconfig.debug | 6 +-
mm/Makefile | 2 +-
mm/damon/core.c | 129 ++-
mm/damon/lru_sort.c | 3 +-
mm/damon/ops-common.c | 40 +-
mm/damon/reclaim.c | 3 +-
mm/damon/stat.c | 3 +-
mm/damon/sysfs-schemes.c | 59 +-
mm/damon/sysfs.c | 53 +-
mm/damon/tests/core-kunit.h | 708 +++++++++++-
mm/damon/tests/sysfs-kunit.h | 25 +
mm/damon/tests/vaddr-kunit.h | 26 +-
mm/damon/vaddr.c | 143 +--
mm/debug.c | 4 +-
mm/debug_vm_pgtable.c | 111 +-
mm/filemap.c | 99 +-
mm/gup.c | 12 +-
mm/hmm.c | 43 +-
mm/huge_memory.c | 1214 ++++++++++++--------
mm/hugetlb.c | 983 +++-------------
mm/hugetlb_internal.h | 117 ++
mm/hugetlb_sysctl.c | 134 +++
mm/hugetlb_sysfs.c | 502 ++++++++
mm/hugetlb_vmemmap.c | 9 +-
mm/internal.h | 73 +-
mm/kasan/common.c | 3 -
mm/kasan/generic.c | 5 +-
mm/kasan/kasan.h | 7 +-
mm/kasan/shadow.c | 32 +-
mm/kasan/tags.c | 2 +-
mm/kfence/core.c | 24 +
mm/khugepaged.c | 209 ++--
mm/kmsan/core.c | 2 +-
mm/kmsan/shadow.c | 6 +-
mm/ksm.c | 159 ++-
mm/madvise.c | 160 ++-
mm/mapping_dirty_helpers.c | 2 +-
mm/memcontrol.c | 70 +-
mm/memory-failure.c | 192 +++-
mm/memory-tiers.c | 2 +-
mm/memory.c | 327 +++---
mm/memory_hotplug.c | 10 +-
mm/mempolicy.c | 86 +-
mm/memremap.c | 40 +-
mm/migrate.c | 74 +-
mm/migrate_device.c | 629 ++++++++--
mm/mincore.c | 25 +-
mm/mlock.c | 2 +-
mm/mm_init.c | 2 +-
mm/mmap.c | 37 +-
mm/mmap_lock.c | 49 +-
mm/mmu_gather.c | 2 +-
mm/mprotect.c | 150 +--
mm/mremap.c | 26 +-
mm/mseal.c | 9 +-
mm/oom_kill.c | 1 +
mm/page-writeback.c | 2 +-
mm/page_alloc.c | 219 ++--
mm/page_idle.c | 15 +-
mm/page_owner.c | 98 +-
mm/page_table_check.c | 33 +-
mm/page_vma_mapped.c | 68 +-
mm/pagewalk.c | 52 +-
mm/percpu-vm.c | 2 +-
mm/pgtable-generic.c | 44 +-
mm/pt_reclaim.c | 3 +-
mm/ptdump.c | 10 +-
mm/rmap.c | 91 +-
mm/secretmem.c | 4 +-
mm/shmem.c | 123 +-
mm/slab_common.c | 2 +-
mm/slub.c | 31 +-
mm/sparse-vmemmap.c | 2 +-
mm/swap.h | 21 -
mm/swap_state.c | 15 +-
mm/swapfile.c | 234 ++--
mm/userfaultfd.c | 127 +-
mm/util.c | 146 ++-
mm/vma.c | 229 ++--
mm/vma.h | 140 ++-
mm/vma_exec.c | 5 +-
mm/vmalloc.c | 271 ++++-
mm/vmscan.c | 83 +-
mm/vmstat.c | 53 +-
mm/workingset.c | 2 +-
mm/zswap.c | 7 +-
rust/bindgen_parameters | 25 +
rust/bindings/bindings_helper.h | 25 +
rust/kernel/mm/virt.rs | 2 +-
tools/mm/page_owner_sort.c | 14 +-
tools/testing/selftests/damon/_damon_sysfs.py | 11 +-
.../selftests/damon/drgn_dump_damon_status.py | 9 +-
tools/testing/selftests/damon/sysfs.py | 71 +-
tools/testing/selftests/mm/guard-regions.c | 185 +++
tools/testing/selftests/mm/gup_test.c | 24 +-
tools/testing/selftests/mm/hmm-tests.c | 919 ++++++++++++++-
tools/testing/selftests/mm/ksm_functional_tests.c | 57 +
tools/testing/selftests/mm/mremap_test.c | 5 +-
tools/testing/selftests/mm/soft-dirty.c | 127 +-
tools/testing/selftests/mm/uffd-common.c | 24 +-
tools/testing/selftests/mm/uffd-stress.c | 2 +-
tools/testing/selftests/mm/uffd-unit-tests.c | 8 +-
tools/testing/selftests/mm/vm_util.c | 5 +
tools/testing/selftests/mm/vm_util.h | 1 +
tools/testing/vma/vma.c | 112 +-
tools/testing/vma/vma_internal.h | 603 ++++++++--
229 files changed, 11657 insertions(+), 5113 deletions(-)
delete mode 100644 Documentation/admin-guide/mm/swap_numa.rst
create mode 100644 include/linux/leafops.h
create mode 100644 include/linux/memory-failure.h
create mode 100644 include/trace/events/memory-failure.h
create mode 100644 mm/hugetlb_internal.h
create mode 100644 mm/hugetlb_sysctl.c
create mode 100644 mm/hugetlb_sysfs.c
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [GIT PULL] MM updates for 6.19-rc1
2025-12-04 5:29 [GIT PULL] MM updates for 6.19-rc1 Andrew Morton
@ 2025-12-05 21:56 ` Linus Torvalds
2025-12-06 2:54 ` Jason Gunthorpe
2025-12-05 22:14 ` pr-tracker-bot
1 sibling, 1 reply; 5+ messages in thread
From: Linus Torvalds @ 2025-12-05 21:56 UTC (permalink / raw)
To: Andrew Morton, Ankit Agrawal, Alex Williamson
Cc: linux-mm, linux-kernel, mm-commits
On Wed, 3 Dec 2025 at 21:29, Andrew Morton <akpm@linux-foundation.org> wrote:
>
> Ankit Agrawal:
> vfio/nvgrace-gpu: register device memory for poison handling
So I had to look at this one because there was a conflict ("int ret"
had been removed by another commit), and after looking at it I ended
up deciding to revert this patch entirely.
I may be wrong, but that patch looks *COMPETELY* broken.
It did
nvgrace_gpu_mmap() ->
nvgrace_gpu_vfio_pci_register_pfn_range() ->
register_pfn_address_space()
using &nvdev->resmem/usemem, and honestly, that looks mis-designed
from beginning to end.
If somebody maps the same BAR of that device twice, the second call to
nvgrace_gpu_vfio_pci_register_pfn_range() will randomly overwrite a
node (that "region->pfn_address_space.node") that has already been
registered and inserted into the pfn_space_itree interval tree.
You can't *do* things like this!
Maybe I'm misreading this, and somebody should correct me, but it
really looks like completely broken code to me. It basically seems to
assume that those two bar regions are mapped exactly once, and I don't
see why that would ever be true except by pure accident because you
only have one user.
That may be a common case, but that doesn't make any of this correct.
Again - maybe I'm missing something. If so, that commit can be re-done
with explanations of why it's all correct.
Linus
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [GIT PULL] MM updates for 6.19-rc1
2025-12-04 5:29 [GIT PULL] MM updates for 6.19-rc1 Andrew Morton
2025-12-05 21:56 ` Linus Torvalds
@ 2025-12-05 22:14 ` pr-tracker-bot
1 sibling, 0 replies; 5+ messages in thread
From: pr-tracker-bot @ 2025-12-05 22:14 UTC (permalink / raw)
To: Andrew Morton; +Cc: Linus Torvalds, linux-mm, linux-kernel, mm-commits
The pull request you sent on Wed, 3 Dec 2025 21:29:18 -0800:
> git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm tags/mm-stable-2025-12-03-21-26
has been merged into torvalds/linux.git:
https://git.kernel.org/torvalds/c/7203ca412fc8e8a0588e9adc0f777d3163f8dff3
Thank you!
--
Deet-doot-dot, I am a bot.
https://korg.docs.kernel.org/prtracker.html
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [GIT PULL] MM updates for 6.19-rc1
2025-12-05 21:56 ` Linus Torvalds
@ 2025-12-06 2:54 ` Jason Gunthorpe
2025-12-06 3:43 ` Linus Torvalds
0 siblings, 1 reply; 5+ messages in thread
From: Jason Gunthorpe @ 2025-12-06 2:54 UTC (permalink / raw)
To: Linus Torvalds
Cc: Andrew Morton, Ankit Agrawal, Alex Williamson, linux-mm,
linux-kernel, mm-commits
On Fri, Dec 05, 2025 at 01:56:17PM -0800, Linus Torvalds wrote:
> On Wed, 3 Dec 2025 at 21:29, Andrew Morton <akpm@linux-foundation.org> wrote:
> >
> > Ankit Agrawal:
> > vfio/nvgrace-gpu: register device memory for poison handling
>
> So I had to look at this one because there was a conflict ("int ret"
> had been removed by another commit), and after looking at it I ended
> up deciding to revert this patch entirely.
>
> I may be wrong, but that patch looks *COMPETELY* broken.
You are right, it is security broken, it worked functionally in
testing because it used qemu which only mmaps once. mmaping twice will
corrupt an interval tree.
Alex and I also noticed it this week also when we were looking at the
same conflcit. We also found another serious bug in how it uses pgoff
that renders it functionally broken after merging all the branches
together as the merge'd tree also changes how pgoff worked. :\
Ankit has been working on a fix this week and we planned to send you a
fix/revert in the next week, travel permitting and so on.
> Again - maybe I'm missing something. If so, that commit can be re-done
> with explanations of why it's all correct.
Reverting it now works well enough too. Let's see if Ankit can prepare
a new revision and perhaps Alex can forward it next week or very early
rc1 after LPC.
Regards,
Jason
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [GIT PULL] MM updates for 6.19-rc1
2025-12-06 2:54 ` Jason Gunthorpe
@ 2025-12-06 3:43 ` Linus Torvalds
0 siblings, 0 replies; 5+ messages in thread
From: Linus Torvalds @ 2025-12-06 3:43 UTC (permalink / raw)
To: Jason Gunthorpe
Cc: Andrew Morton, Ankit Agrawal, Alex Williamson, linux-mm,
linux-kernel, mm-commits
On Fri, 5 Dec 2025 at 18:54, Jason Gunthorpe <jgg@nvidia.com> wrote:
>
> Reverting it now works well enough too. Let's see if Ankit can prepare
> a new revision and perhaps Alex can forward it next week or very early
> rc1 after LPC.
So adding that memory poisoning logic at mmap time looks crazy to me.
The mmap has *nothing* to do with memory poisoning. The memory is
there whether it is mapped or not, and admittedly it's harder to
_access_ when not mapped, but it still has nothing to do with mmap.
As far as I can tell, that memory poisoning logic should be
added/removed when the device is registered or unregistered, and there
is nothing about mmap that should have any effect what-so-ever.
Linus
^ permalink raw reply [flat|nested] 5+ messages in thread
end of thread, other threads:[~2025-12-06 3:44 UTC | newest]
Thread overview: 5+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2025-12-04 5:29 [GIT PULL] MM updates for 6.19-rc1 Andrew Morton
2025-12-05 21:56 ` Linus Torvalds
2025-12-06 2:54 ` Jason Gunthorpe
2025-12-06 3:43 ` Linus Torvalds
2025-12-05 22:14 ` pr-tracker-bot
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