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x86_64-pc-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-Rspamd-Server: rspam08 X-Rspamd-Queue-Id: 82399120009 X-Stat-Signature: dzdx7bx178rmgocdkdjnm518ywiino7w X-Rspam-User: X-HE-Tag: 1776577115-726969 X-HE-Meta: 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 n135aP13 iSMu5xdy5IGXduoOuiDQw4p3qnRJzAKpndVYZr98FvMPZL0aFc9TW9hBi8+Est1xcYWiviomoObI9NO0M7ya46ZqtcON5pq0OL6IH3E/E4kAi5LfiNgU90ZbhUMYCV09Oom7j4Ww5UYosfftPCQcYV0YZkd0zdKM9LY53AJEyOy9Rxh7m/khphGkDNthCZ666KEMRYnnbbrBhmm3N/YF4I2H89jYRxavxt98YJIOGwk5/hoDBwJa4LnjS/5IufViJbJ9AYPf3LAFOBOJm8yQpQItdnVgy+8KRfjZzkoQv2UH2mg7AMxMJ47uVlNS8uQgdeXyqvFaDBM5z/To= Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: Linus, please merge this second batch of MM updates for the current merge window, thanks. I'm seeing no conflicts against mainline at this time. If some do pop up, they will hopefully be addressed in the first-round merge at https://lore.kernel.org/20260413214952.62836ac9df0eb348ee4aeb2b@linux-foundation.org The following changes since commit 3bac01168982ec3e3bf87efdc1807c7933590a85: mm: fix deferred split queue races during migration (2026-04-05 13:53:47 -0700) are available in the Git repository at: git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm tags/mm-stable-2026-04-18-02-14 for you to fetch changes up to 0b5e8d7999076ac3c490fc18376a404e2626abff: MAINTAINERS: add page cache reviewer (2026-04-18 00:10:56 -0700) ---------------------------------------------------------------- mm.git review status for linus..mm-stable Everything: Total patches: 121 Reviews/patch: 2.11 Reviewed rate: 90% Excluding DAMON: Total patches: 113 Reviews/patch: 2.25 Reviewed rate: 96% - The 33 patch series "Eliminate Dying Memory Cgroup" from Qi Zheng and Muchun Song addresses the longstanding "dying memcg problem". A situation wherein a no-longer-used memory control group will hang around for an extended period pointlessly consuming memory. The [0/N] changelog has a good overview of this work. - The 3 patch series "fix unexpected type conversions and potential overflows" from Qi Zheng fixes a couple of potential 32-bit/64-bit issues which were identified during review of the "Eliminate Dying Memory Cgroup" series. - The 6 patch series "kho: history: track previous kernel version and kexec boot count" from Breno Leitao uses Kexec Handover (KHO) to pass the previous kernel's version string and the number of kexec reboots since the last cold boot to the next kernel, and prints it at boot time. - The 4 patch series "liveupdate: prevent double preservation" from Pasha Tatashin teaches LUO to avoid managing the same file across different active sessions. - The 10 patch series "liveupdate: Fix module unloading and unregister API" from Pasha Tatashin addresses an issue with how LUO handles module reference counting and unregistration during module unloading. - The 2 patch series "zswap pool per-CPU acomp_ctx simplifications" from Kanchana Sridhar simplifies and cleans up the zswap crypto compression handling and improves the lifecycle management of zswap pool's per-CPU acomp_ctx resources. - The 2 patch series "mm/damon/core: fix damon_call()/damos_walk() vs kdmond exit race" from SeongJae Park addresses unlikely but possible leaks and deadlocks in damon_call() and damon_walk(). - The 2 patch series "mm/damon/core: validate damos_quota_goal->nid" from SeongJae Park fixes a couple of root-only wild pointer dereferences. - The 2 patch series "Docs/admin-guide/mm/damon: warn commit_inputs vs other params race" from SeongJae Park updates the DAMON documentation to warn operators about potential races which can occur if the commit_inputs parameter is altered at the wrong time. - The 3 patch series "Minor hmm_test fixes and cleanups" from Alistair Popple implements two bugfixes a cleanup for the HMM kernel selftests. - The 6 patch series "Modify memfd_luo code" from Chenghao Duan provides cleanups, simplifications and speedups in the memfd_lou code. - The 4 patch series "mm, kvm: allow uffd support in guest_memfd" from Mike Rapoport enables support for userfaultfd in guest_memfd. - The 6 patch series "selftests/mm: skip several tests when thp is not available" from Chunyu Hu fixes several issues in the selftests code which were causing breakage when the tests were run on CONFIG_THP=n kernels. - The 2 patch series "mm/mprotect: micro-optimization work" from Pedro Falcato implements a couple of nice speedups for mprotect(). - The 3 patch series "MAINTAINERS: update KHO and LIVE UPDATE entries" from Pratyush Yadav reflects upcoming changes in the maintenance of KHO, LUO, memfd_luo, kexec, crash, kdump and probably other kexec-based things - they are being moved out of mm.git and into a new git tree. ---------------------------------------------------------------- Alistair Popple (3): lib: test_hmm: evict device pages on file close to avoid use-after-free selftests/mm: hmm-tests: don't hardcode THP size to 2MB lib: test_hmm: implement a device release method Andrew Stellman (1): zram: reject unrecognized type= values in recompress_store() Arnd Bergmann (1): mm/vmscan: avoid false-positive -Wuninitialized warning Baolin Wang (1): mm: vmscan: fix dirty folios throttling on cgroup v1 for MGLRU Breno Leitao (8): mm: kmemleak: add CONFIG_DEBUG_KMEMLEAK_VERBOSE build option kho: add size parameter to kho_add_subtree() kho: rename fdt parameter to blob in kho_add/remove_subtree() kho: persist blob size in KHO FDT kho: fix kho_in_debugfs_init() to handle non-FDT blobs kho: kexec-metadata: track previous kernel chain kho: document kexec-metadata tracking feature mm/vmstat: fix vmstat_shepherd double-scheduling vmstat_update Cao Ruichuang (1): selftests: mm: skip charge_reserved_hugetlb without killall Chenghao Duan (6): mm/memfd: use folio_nr_pages() for shmem inode accounting mm/memfd_luo: optimize shmem_recalc_inode calls in retrieve path mm/memfd_luo: remove unnecessary memset in zero-size memfd path mm/memfd_luo: use i_size_write() to set inode size during retrieve mm/memfd_luo: fix physical address conversion in put_folios cleanup mm/memfd_luo: remove folio from page cache when accounting fails Chunyu Hu (6): selftests/mm/guard-regions: skip collapse test when thp not enabled selftests/mm: soft-dirty: skip two tests when thp is not available selftests/mm: move write_file helper to vm_util selftests/mm/vm_util: robust write_file() selftests/mm: split_huge_page_test: skip the test when thp is not available selftests/mm: transhuge_stress: skip the test when thp not available Dave Young (1): MAINTAINERS: update Dave's kdump reviewer email address David Carlier (1): mm/page_io: use sio->len for PSWPIN accounting in sio_read_complete() Davidlohr Bueso (1): mm/migrate_device: remove dead migration entry check in migrate_vma_collect_huge_pmd() Denis M. Karpov (1): userfaultfd: allow registration of ranges below mmap_min_addr Hao Ge (1): mm/alloc_tag: clear codetag for pages allocated before page_ext initialization Jackie Liu (2): mm/damon/stat: fix memory leak on damon_start() failure in damon_stat_start() mm/mempolicy: fix memory leaks in weighted_interleave_auto_store() Jan Kara (1): MAINTAINERS: add page cache reviewer Kanchana P. Sridhar (2): mm: zswap: remove redundant checks in zswap_cpu_comp_dead() mm: zswap: tie per-CPU acomp_ctx lifetime to the pool Kevin Brodsky (1): docs: proc: document ProtectionKey in smaps Li Wang (1): selftests/mm: skip hugetlb_dio tests when DIO alignment is incompatible Lorenzo Stoakes (1): mm/vma: remove __vma_check_mmap_hook() Lorenzo Stoakes (Oracle) (2): MAINTAINERS: update MGLRU entry to reflect current status tools/testing/selftests: add merge test for partial msealed range Mike Rapoport (Microsoft) (11): userfaultfd: introduce mfill_copy_folio_locked() helper userfaultfd: introduce struct mfill_state userfaultfd: introduce mfill_establish_pmd() helper userfaultfd: introduce mfill_get_vma() and mfill_put_vma() userfaultfd: retry copying with locks dropped in mfill_atomic_pte_copy() userfaultfd: move vma_can_userfault out of line userfaultfd: introduce vm_uffd_ops shmem, userfaultfd: use a VMA callback to handle UFFDIO_CONTINUE userfaultfd: introduce vm_uffd_ops->alloc_folio() shmem, userfaultfd: implement shmem uffd operations using vm_uffd_ops userfaultfd: mfill_atomic(): remove retry logic Muchun Song (24): mm: memcontrol: remove dead code of checking parent memory cgroup mm: workingset: use folio_lruvec() in workingset_refault() mm: rename unlock_page_lruvec_irq and its variants mm: vmscan: refactor move_folios_to_lru() mm: memcontrol: allocate object cgroup for non-kmem case mm: memcontrol: return root object cgroup for root memory cgroup mm: memcontrol: prevent memory cgroup release in get_mem_cgroup_from_folio() buffer: prevent memory cgroup release in folio_alloc_buffers() writeback: prevent memory cgroup release in writeback module mm: memcontrol: prevent memory cgroup release in count_memcg_folio_events() mm: page_io: prevent memory cgroup release in page_io module mm: migrate: prevent memory cgroup release in folio_migrate_mapping() mm: mglru: prevent memory cgroup release in mglru mm: memcontrol: prevent memory cgroup release in mem_cgroup_swap_full() mm: workingset: prevent memory cgroup release in lru_gen_eviction() mm: workingset: prevent lruvec release in workingset_refault() mm: zswap: prevent lruvec release in zswap_folio_swapin() mm: swap: prevent lruvec release in lru_gen_clear_refs() mm: workingset: prevent lruvec release in workingset_activation() mm: memcontrol: prepare for reparenting LRU pages for lruvec lock mm: memcontrol: eliminate the problem of dying memory cgroup for LRU folios mm: lru: add VM_WARN_ON_ONCE_FOLIO to lru maintenance helpers mm/sparse: fix preinited section_mem_map clobbering on failure path mm/sparse: fix comment for section map alignment Pasha Tatashin (14): liveupdate: prevent double management of files memfd: implement get_id for memfd_luo selftests: liveupdate: add test for double preservation liveupdate: safely print untrusted strings liveupdate: synchronize lazy initialization of FLB private state liveupdate: protect file handler list with rwsem liveupdate: protect FLB lists with luo_register_rwlock liveupdate: defer FLB module refcounting to active sessions liveupdate: remove luo_session_quiesce() liveupdate: auto unregister FLBs on file handler unregistration liveupdate: remove liveupdate_test_unregister() liveupdate: make unregister functions return void liveupdate: defer file handler module refcounting to active sessions MAINTAINERS: update kexec/kdump maintainers entries Pedro Falcato (2): mm/mprotect: move softleaf code out of the main function mm/mprotect: special-case small folios when applying permissions Pratyush Yadav (Google) (3): MAINTAINERS: update KHO and LIVE UPDATE maintainers MAINTAINERS: drop include/linux/kho/abi/ from KHO MAINTAINERS: drop include/linux/liveupdate from LIVE UPDATE Qi Zheng (14): mm: vmscan: prepare for the refactoring the move_folios_to_lru() mm: thp: prevent memory cgroup release in folio_split_queue_lock{_irqsave}() mm: zswap: prevent memory cgroup release in zswap_compress() mm: do not open-code lruvec lock mm: vmscan: prepare for reparenting traditional LRU folios mm: vmscan: prepare for reparenting MGLRU folios mm: memcontrol: refactor memcg_reparent_objcgs() mm: workingset: use lruvec_lru_size() to get the number of lru pages mm: memcontrol: refactor mod_memcg_state() and mod_memcg_lruvec_state() mm: memcontrol: prepare for reparenting non-hierarchical stats mm: memcontrol: convert objcg to be per-memcg per-node type mm: memcontrol: correct the type of stats_updates to unsigned long mm: memcontrol: change val type to long in __mod_memcg_{lruvec_}state() mm: memcontrol: correct the nr_pages parameter type of mem_cgroup_update_lru_size() SeongJae Park (7): mm/damon/core: fix damon_call() vs kdamond_fn() exit race mm/damon/core: fix damos_walk() vs kdamond_fn() exit race mm/damon/core: validate damos_quota_goal->nid for node_mem_{used,free}_bp mm/damon/core: validate damos_quota_goal->nid for node_memcg_{used,free}_bp mm/damon/core: use time_in_range_open() for damos quota window start Docs/admin-guide/mm/damon/reclaim: warn commit_inputs vs param updates race Docs/admin-guide/mm/damon/lru_sort: warn commit_inputs vs param updates race Sergey Senozhatsky (1): zram: do not forget to endio for partial discard requests Suren Baghdasaryan (1): mm/vmscan: prevent MGLRU reclaim from pinning address space Thorsten Blum (1): mm/hugetlb: fix early boot crash on parameters without '=' separator Zhaoyang Huang (1): mm: remove '!root_reclaim' checking in should_abort_scan() CREDITS | 8 + Documentation/admin-guide/mm/damon/lru_sort.rst | 4 + Documentation/admin-guide/mm/damon/reclaim.rst | 4 + Documentation/admin-guide/mm/kho.rst | 41 +- Documentation/filesystems/proc.rst | 4 + MAINTAINERS | 29 +- drivers/block/zram/zram_drv.c | 5 +- fs/buffer.c | 4 +- fs/fs-writeback.c | 22 +- fs/userfaultfd.c | 2 - include/linux/alloc_tag.h | 2 + include/linux/damon.h | 2 + include/linux/fs.h | 9 +- include/linux/kexec_handover.h | 13 +- include/linux/kho/abi/kexec_handover.h | 20 +- include/linux/kho/abi/kexec_metadata.h | 46 ++ include/linux/liveupdate.h | 17 +- include/linux/memcontrol.h | 191 +++--- include/linux/mm.h | 5 + include/linux/mm_inline.h | 6 + include/linux/mmzone.h | 42 +- include/linux/pgalloc_tag.h | 2 +- include/linux/sched.h | 2 +- include/linux/shmem_fs.h | 14 - include/linux/swap.h | 25 +- include/linux/userfaultfd_k.h | 73 ++- include/trace/events/memcg.h | 10 +- include/trace/events/writeback.h | 3 + kernel/cgroup/cgroup.c | 9 +- kernel/liveupdate/kexec_handover.c | 158 ++++- kernel/liveupdate/kexec_handover_debugfs.c | 55 +- kernel/liveupdate/kexec_handover_internal.h | 15 +- kernel/liveupdate/luo_core.c | 11 +- kernel/liveupdate/luo_file.c | 112 ++-- kernel/liveupdate/luo_flb.c | 182 +++--- kernel/liveupdate/luo_internal.h | 7 +- kernel/liveupdate/luo_session.c | 46 +- lib/alloc_tag.c | 109 ++++ lib/test_hmm.c | 130 ++-- lib/test_kho.c | 5 +- lib/tests/liveupdate.c | 18 - mm/Kconfig.debug | 11 + mm/compaction.c | 43 +- mm/damon/core.c | 88 +-- mm/damon/stat.c | 5 +- mm/huge_memory.c | 22 +- mm/hugetlb.c | 18 + mm/kmemleak.c | 2 +- mm/memblock.c | 4 +- mm/memcontrol-v1.c | 31 +- mm/memcontrol-v1.h | 7 + mm/memcontrol.c | 632 ++++++++++++------- mm/memfd_luo.c | 34 +- mm/mempolicy.c | 23 +- mm/migrate.c | 2 + mm/migrate_device.c | 6 - mm/mlock.c | 2 +- mm/mprotect.c | 218 ++++--- mm/page_alloc.c | 10 +- mm/page_io.c | 10 +- mm/percpu.c | 2 +- mm/shmem.c | 176 +++--- mm/shrinker.c | 6 +- mm/sparse.c | 1 - mm/swap.c | 59 +- mm/userfaultfd.c | 682 ++++++++++++--------- mm/util.c | 10 - mm/vmscan.c | 303 ++++++--- mm/vmstat.c | 2 +- mm/workingset.c | 30 +- mm/zswap.c | 187 +++--- tools/testing/selftests/liveupdate/liveupdate.c | 41 ++ .../selftests/mm/charge_reserved_hugetlb.sh | 5 + tools/testing/selftests/mm/guard-regions.c | 4 + tools/testing/selftests/mm/hmm-tests.c | 83 +-- tools/testing/selftests/mm/hugetlb_dio.c | 91 ++- tools/testing/selftests/mm/merge.c | 88 +++ tools/testing/selftests/mm/soft-dirty.c | 4 +- tools/testing/selftests/mm/split_huge_page_test.c | 19 +- tools/testing/selftests/mm/thp_settings.c | 35 +- tools/testing/selftests/mm/thp_settings.h | 1 - tools/testing/selftests/mm/transhuge-stress.c | 4 + tools/testing/selftests/mm/vm_util.c | 24 + tools/testing/selftests/mm/vm_util.h | 2 + 84 files changed, 2814 insertions(+), 1675 deletions(-) create mode 100644 include/linux/kho/abi/kexec_metadata.h