I will have a talk at the Linux Kernel Summit 2021

I will present DAMON/DAMOS in KernelSummit'21. The title of the talk is “Writing a fine-grained access pattern-oriented lightweight kernel module using DAMON/DAMOS in 10 minutes”. https://linuxplumbersconf.org/event/11/contributions/984/

September 8, 2021 · 1 min · 26 words · Me

I will have a talk at the Linux Kernel Summit 2021

KernelSummit'21 에서 DAMON/DAMOS 를 발표하게 되었습니다. 발표 제목은 “Writing a fine-grained access pattern-oriented lightweight kernel module using DAMON/DAMOS in 10 minutes” 입니다. https://linuxplumbersconf.org/event/11/contributions/984/

September 8, 2021 · 1 min · 23 words · Me

LKML News v5.15-rc1

[RFC PATCH] mm/oom: detect and kill task which has allocation forbidden by cpuset limit (Feng Tang) https://lkml.kernel.org/r/1630399085-70431-1-git-send-email-feng.tang@intel.com Docker needs to allocate memory in non-movable zones for creation of an OS (e.g., GFP_HIGHUSER). However, if it is binded to a cpuset which has only movable zone, the allocation fails and OOM storm attacks other innocent processes. This patch detects the case and kill only the allocation failing process. Folios: Can we resolve this please?...

September 1, 2021 · 3 min · 460 words · Me

LKML News v5.14

[GIT PULL] Memory folios for v5.15 (Matthew Wilcox) https://lkml.kernel.org/r/YSPwmNNuuQhXNToQ@casper.infradead.org Matthew Wilcox sent a pull request for his page folio works to Linus Torvalds. Linus Torvalds replied he wants this to work in reverse. That is, calling head pages as normal pages but calling tail pages something other, as the term, page, is more common and de-facto standard in the industry. mmotm 2021-08-23-16-42 uploaded (Andrew Morton) https://lkml.kernel.org/r/20210823234329.H9WD-du1K%akpm@linux-foundation.org MMOTM is rebased on v5....

August 24, 2021 · 2 min · 334 words · Me

LKML News v5.14-rc7

[PATCH v2 0/3] virtio-mem: disallow mapping virtio-mem memory via /dev/mem (David Hildenbrand) https://lkml.kernel.org/r/20210816142505.28359-1-david@redhat.com Once the virtio-mem driver is plugging/unplugging memory of virtual machines, accessing the memory region via /dev/mem from the user space makes no sense. To avoid such insane use case, this patchset adds a basic infrastructure to exclude some physical memory regions completely from /dev/mem. [PATCH v2 00/61] Introducing the Maple Tree (Liam Howlett) https://lkml.kernel.org/r/20210817154651.1570984-1-Liam.Howlett@oracle.com This patchset introduces a new data structure called maple tree, which intended to replace the rbtree for vm_area_struct....

August 17, 2021 · 3 min · 477 words · Me