LKML News v6.6-rc5

[PATCH 0/5] riscv: Use READ_ONCE()/WRITE_ONCE() for pte accesses (Alexandre Ghiti) https://lkml.kernel.org/r/20231002151031.110551-1-alexghiti@rivosinc.com A patchset for making all page table entries accesses use READ_ONCE()/WRITE_ONCE(), to avoid compiler reordering of the accesses. [PATCH v1 0/3] mm/gup: Introduce pin_user_pages_fd() for pinning shmem/hugetlbfs file pages (Vivek Kasireddy) https://lkml.kernel.org/r/20231003074447.3245729-1-vivek.kasireddy@intel.com A patchset introducing a new function for long-term pages pinning. [RFC PATCH v3 0/3] Introduce persistent memory pool (Stanislav Kinsburskii) https://lkml.kernel.org/r/169645773092.11424.7258549771090599226.stgit@skinsburskii. An RFC implementing a memory allocator in the kernel for persistent memory has posted....

October 3, 2023 · 2 min · 223 words · Me

LKML News v6.6-rc4

[PATCH v3 0/4] Smart scanning mode for KSM (Stefan Roesch) https://lkml.kernel.org/r/20230926040939.516161-1-shr@devkernel.io KSM scans pages without historic information, so pages that already found to be not eligible for deduplication are scanned unnecessarily. This patchset introduces smart scanning for KSM, which utilizes the historic information. [PATCH -V2 00/10] mm: PCP high auto-tuning (Huang Ying) https://lkml.kernel.org/r/20230926060911.266511-1-ying.huang@intel.com This patchset implements auto-tuning of Per-CPU Pageset high to optimize page allocation performance. [PATCH rfc 0/5] mm: improve performance of kernel memory accounting (Roman Gushchin) https://lkml....

September 26, 2023 · 2 min · 251 words · Me

LKML News v6.6-rc3

[Invitation] Linux MM Alignment Session on APIs for Sparse Mappings on Wednesday (David Rientjes) https://lkml.kernel.org/r/fba78307-e4a3-2621-2917-464f19bb4c57@google.com David is organizing yet another Linux MM alignment session for proper API for sparse mappings. [PATCH v2] vmscan: add trace events for lru_gen (Jaewon Kim) https://lkml.kernel.org/r/20230921062206.14429-1-jaewon31.kim@samsung.com This patch adds two new tracevents called trace_mm_vmscan_lru_gen_scan and trace_mm_vmscan_lru_gen_evict that similar to trace_mm_vmscan_lru_isolate and trace_mm_vmscan_lru_shrink_[in]active. [PATCH v3 00/15] futex: More futex2 bits (Peter Zijlstra) https://lkml.kernel.org/r/20230921104505.717750284@noisy.programming.kicks-ass.net Peter sent third version of the patchset that introduces a new interface for same futex core, futex2....

September 20, 2023 · 1 min · 191 words · Me

LKML News v6.6-rc2

[syzbot] Monthly mm report (Sep 2023) https://lkml.kernel.org/r/000000000000c06b600605127cb3@google.com Syzbot posted its mm subsystem report for last 31 days. For the period, seven new issues were found and two among those were fixed. In total, 43/232 issues are still open. [PATCH 0/2] workload-specific and memory pressure-driven zswap writeback (Nhat Pham) https://lkml.kernel.org/r/20230911164024.2541401-1-nphamcs@gmail.com Zswap has only single LRU list and shrinks under user-defined limit. This patch series seperates the LRU list out to per-memcg and per-NUMA, and perform workload-specific writeback under memory pressure....

September 12, 2023 · 2 min · 319 words · Me

LKML News v6.6-rc1

[GIT PULL] MM updates for 6.6-rc1 (Andrew Morton) https://lkml.kernel.org/r/20230828184251.bfbc164280503903eacf498c@linux-foundation.org Andrew sent the mm subsystem pull request for v6.6-rc1 to Linus Torvalds. And, it pulled. [PATCH 1/2] mm/vmalloc: Add a safer version of find_vm_area() for debug (Joel Fernendes) https://lkml.kernel.org/r/20230830110402.386898-1-joel@joelfernandes.org A patchset implementing safe trylock version of vmalloc dump function. [PATCH v2 0/6] Introduce __mt_dup() to improve the performance of fork() (Peng Zhang) https://lkml.kernel.org/r/20230830125654.21257-1-zhangpeng.00@bytedance.com When doing fork(), vma of the parent should be inserted into the maple tree of the child....

August 28, 2023 · 3 min · 465 words · Me