LKML News v6.13-rc1

[GIT PULL] MM updates for 6.13-rc1 (Andrew Morton) https://lore.kernel.org/20241118193001.6aefcadd7426feafedf824e1@linux-foundation.org Andrew posted memory management subsystem pull request for v6.13-rc1 to Linus Torvalds. [PATCHSET v5 0/17] Uncached buffered IO (Jens Axboe) https://lore.kernel.org/20241114152743.2381672-2-axboe@kernel.dk Jens is continuing his work on support of buffered IO that isn’t page cache persistent. The motivation is the fact that device speed is getting faster while reclaim is not. [RFCv1 0/6] Page Detective (Pasha Tatashin) https://lore.kernel.org/20241116175922.3265872-1-pasha.tatashin@soleen.com Pasha posted an RFC patch series for better debugging of page status....

November 19, 2024 · 2 min · 367 words · Me

LKML News v6.12

[PATCH 0/4] move per-vma lock into vm_area_struct (Suren Baghdasaryan) https://lore.kernel.org/20241111205506.3404479-1-surenb@google.com Suren posted a patch moving vm_lock back into vm_area_struct after confirming the performance regression found before happens only on limited cases (old Broadwell microarchitecture). [PATCH] lib/alloc_tag: Remove the sysctl configuration to prevent users from disabling it at runtime (Hao Ge) https://lore.kernel.org/20241108075004.131911-1-hao.ge@linux.dev Hao tries to remove runtime memory allocation profiling on/off knob, since he believes it is only making users confused....

November 12, 2024 · 1 min · 152 words · Me

LKML News v6.12-rc7

[PATCH 0/3] Introduce acctmem (Matthew Wilcox) https://lore.kernel.org/20241104210602.374975-1-willy@infradead.org Willy tries to split out page->memcg_data reference counting using a new abstract, acctmem. [linus:master] [mm, mmap] d4148aeab4: will-it-scale.per_process_ops 3888.9% improvement (kernel test robot) https://lore.kernel.org/202411072132.a8d2cf0f-oliver.sang@intel.com Kernel test robot reports huge improvement on will-it-scale benchmark, coming from commit d4148aeab412 (“mm, mmap: limit THP alignment of anonymous mappings to PMD-aligned sizes”). Linux 6.12-rc7 (Linus Torvalds) https://lore.kernel.org/CAHk-=wiWK-GCmFGNqknDZzWMZM-u58tmP=jZ9ooTo9b8NURvgQ@mail.gmail.com Linus released the seventh candidate for Linux v6.12. Linus says no big surprises found, so he anticipates final 6....

November 5, 2024 · 1 min · 82 words · Me

LKML News v6.12-rc6

[GIT PULL] hotfixes for 6.12-rc6 (Andrew Morton) https://lore.kernel.org/20241028203743.3fe4d95463aaafe23a239b51@linux-foundation.org Andrew posted mm hotfixes for v6.12-rc6. [PATCH v2 0/4] mm: add more kernel parameters to control mTHP (Maíra Canal) https://lore.kernel.org/20241029002324.1062723-1-mcanal@igalia.com Maira posted a patch series for adding kernel parameters to control mTHP for shmem. [Invitation] Linux MM Alignment Session on Memory Error Detector on Wednesday (David Rientjes) https://lore.kernel.org/9242f7cc-6b9d-b807-9079-db0ca81f3c6d@google.com David invites kernel developers to another MM alignment session. The topic is how to make user-space control memory failure recovery....

October 28, 2024 · 2 min · 238 words · Me

LKML News v6.12-rc5

[PATCH v1 0/6] mm/arm64: re-enable HVO (Yu Zhao) https://lore.kernel.org/20241021042218.746659-1-yuzhao@google.com There were a few attempts to enable hugetlb vmemmap optimization (HVO) on arm64. Yu posted another approach. linus-next: improving functional testing for to-be-merged pull requests (Sasha Levin) https://lore.kernel.org/ZxZ8MStt4e8JXeJb@sashalap Sasha proposes having a new test-purpose tree for Linus’ concern about testing. Re: [GIT PULL] bcachefs fixes for 6.12-rc5 (Sasha Levin) https://lore.kernel.org/Zxf3vp82MfPTWNLx@sashalap Following the feedback to linus-next proposal, Sasha implemented a bot for simple pre-merge check of pull requests, and showcase it on a random pull request....

October 22, 2024 · 2 min · 248 words · Me