Posts

Project: Improving the PCP allocator (Matthew Wilcox) https://lkml.kernel.org/r/Za6RXtSE_TSdrRm_@casper.infradead.org Matthew introduces an idea to improve the PCP allocator, roughly saying, keeping only compound memory on the PCP list. [PATCH v2 0/3] Enable >0 order folio memory compaction (Zi Yan) https://lkml.kernel.org/r/20240123034636.1095672-1-zi.yan@sent.com Zi enables larger than zero order folio compaction, which is the prerequisite for large folio support. [PATCH v2 1/3] mm: make vm_area_struct anon_name field RCU-safe (Suren Baghdasaryan) https://lkml.kernel.org/r/20240123231014.3801041-1-surenb@google.com For lockless /proc/pid/maps reads, this patch makes anon_name field of vm_area_struct, which is the only one field that need to be accessed for reading the file but not RCU-protected, to be protected by RCU....

[GIT PULL] MM updates for 6.8-rc1 (Andrew Morton) https://lkml.kernel.org/r/20240108155039.fd2798712a2a93a108b710ce@linux-foundation.org/ Andrew Morton sent the memory management subsystem side pull request for Linux v6.8-rc1 to Linus Torvalds. The request has many interesting changes including zswap writeback improvement, Feedback-based DAMOS autotuning, Multi-size anon THP, KSM advisor and many more. [GIT PULL] non-MM updates for 6.8-rc1 (Andrew Morton) https://lkml.kernel.org/r/20240109110420.dcdefe80d76257d9ff645a32@linux-foundation.org Andrew sent yet another pull request for out of memory management subsystem changes to Linus Torvalds....

[PATCH v3 0/7] hugetlb: parallelize hugetlb page init on boot (Gang Li) https://lkml.kernel.org/r/20240102131249.76622-1-gang.li@linux.dev The thrid version of hugetlb initialization prallelization patchset has posted. [PATCH v3 00/11] Mitigate a vmap lock contention v3 (Uladzislau Rezki) https://lkml.kernel.org/r/20240102184633.748113-1-urezki@gmail.com Third version of vmap lock contention mitigation patch has posted. [PATCH v6 0/2] Add swappiness argument to memory.reclaim (Dan Schatzberg) https://lkml.kernel.org/r/20240103164841.2800183-1-schatzberg.dan@gmail.com Sixth version of the patchset for letting memory.reclaim memcg file be used with swappiness argument has posted....

As today is the last day of 2023, I checked some open source commits statistics using my simple and buggy script, and github. Similar statistics for 2022 is available at another post. In short, I made 8th and 4th biggest changes to Linux kernel memory management subsystem among the 295 people, for lines of changes (1,910) and commits (66). For the Linux kernel whole tree, the numbers become 264th (3,562 lines) and 80th (147 commits) among 5,006 people....

[PATCH] kernel: Introduce a write lock/unlock wrapper for tasklist_lock (Maria Yu) https://lkml.kernel.org/r/20231225081932.17752-1-quic_aiquny@quicinc.com A patch introducing a write lock/unlock wrapper for tasklist_lock, to overcome bad responsive performance of system that coming from scenarios that acquiring read lock which wrote lock needed to be waiting for. [PATCH v3 00/10] IOMMU memory observability (Pasha Tatashin) https://lkml.kernel.org/r/20231226200205.562565-1-pasha.tatashin@soleen.com Third version of patchset to allow monitoring and limiting IOMMU memory usage is posted. [GIT PULL] hotfixes for 6....