[RFC PATCH] Introducing lockless cache built on top of slab allocator (Hyeonggon Yoo) https://lkml.kernel.org/r/20210919164239.49905-1-42.hyeyoo@gmail.com
The block layer now has a lockless cache, which increased its IOPS. This RFC generalizes it so that it can be used in some other area, such as NAPI.
[PATCH v5 0/3] virtio-mem: disallow mapping virtio-mem memory via /dev/mem (David Hildenbrand) https://lkml.kernel.org/r/20210920142856.17758-1-david@redhat.com
This patchset makes a basic infrastructure to exclude some physical memory regions that marked as IORESOURCE_SYSTEM_RAM from /dev/mem access, even though they are not marked as IORESOURCE_BUSY.
[PATCH v1] vmpressure: wake up work only when there is registration event (wangyong) https://lkml.kernel.org/r/1631548441-2784-1-git-send-email-wang.yong12@zte.com.cn
Currently, vmpressure works are awaken even though there are no vmpressure callbacks. This commit avoids such unnecessary wakeup by counting the number of registered events and skip waking up works if the number is zero.
[PATCH v3 00/76] Optimize list lru memory consumption (Muchun Song) https://lkml.kernel.org/r/20210914072938.6440-1-songmuchun@bytedance.com
Muchun found kmalloc-32 for list_lru_one allocation consuming 6 GiB of memory on their server.
[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?
[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.
[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.
[PATCH v9 1/2] mm: introduce process_mrelease system call (Suren Baghdasaryan) https://lkml.kernel.org/r/20210809185259.405936-1-surenb@google.com
9th version of the patchset which introducing a new system call for releasing memory of a process in a speedy manner.
mmotm 2021-08-09-19-18 uploaded (Andrew Morton) https://lkml.kernel.org/r/20210810021934.XcpwGUEMn%akpm@linux-foundation.org
-mm tree updated.
[PATCH 0/5] x86: Impplement support for unaccepted memory (Kirill A. Shutemov) https://lkml.kernel.org/r/20210810062626.1012-1-kirill.shutemov@linux.intel.com
Some platforms like Intel TDX or AMD SEV-SNP require memory to be accepted before it can be used by the guest.
[PATCH 0/3] mm: optimize thp for reclaim and migration (Yu Zhao) https://lkml.kernel.org/r/20210731063938.1391602-1-yuzhao@google.com
This patchset drops subpages of THPs which contain only zero contents when splitting those, to reduce memory pressure overheads due to THP internal fragmentations.
[PATCH v4 1/2] mm: introduce process_mrelease system call (Suren Baghdasaryan) https://lkml.kernel.org/r/20210802221431.2251210-1-surenb@google.com
This patchset introduces a new system call, namely process_mrelease(). It can be used to quickly release memory of a process.
[PATCH v7 0/5] Introduce multi-preference mempolicy (Feng Tang) https://lkml.
mmotm 2021-07-28-18-24 uploaded (Andrew Morton) https://lkml.kernel.org/r/20210729012524.S8-WP%akpm@linux-foundation.org
Andrew Morton is updating the -mm tree.
incoming (Andrew Morton) https://lkml.kernel.org/r/20210729145259.24681c326dc3ed18194cf9e5@linux-foundation.org
Seven fixup patches from Andrew Morton.
[PATCH 0/3] mm: optimize thp for reclaim and migration (Yu Zhao) https://lkml.kernel.org/r/20210731063938.1391602-1-yuzhao@google.com
This patch optimizes THP split for reclaim or migration by dropping subpages that contain only zeroes.
Linux 5.14-rc4 (Linus Torvalds) https://lkml.kernel.org/r/CAHk-=whv0g5YqoRXc8oxqJX3r+GP1dN3ia_Qg_V6UTjhi8vg8w@mail.gmail.com
After one week, entirely normal rc4 is released. 5.14 is not so far now.
[PATCH 0/7] Free user PTE page table pages (Qi Zheng) https://lkml.kernel.org/r/20210718043034.76431-1-zhengqi.arch@bytedance.com
This patchset frees user PTE page table pages when all PTE entries are empty, to reduce the memory overhead due to page tables.
[PATCH v15 00/17] Folio support in block + iomap layers (Matthew Wilcox) https://lkml.kernel.org/r/20210719184001.1750630-1-willy@infradead.org
Seems memory folios patchset is now merged in -mm tree and -next tree. This patchset further updates iomap to use folios.
Runtime Memory Validation in Intel-TDX and AMD-SNP (Joerg Roedel) https://lkml.
[PATCH v6 0/6] Introduce multi-preference mempolicy (Feng Tang) https://lkml.kernel.org/r/1626077374-81682-1-git-send-email-feng.tang@intel.com
Six version of the patchset that allows applications to set multiple preferred memory policy.
[PATCH v1] madvise.2: Document MADV_POPULATE_READ and MADV_POPULATE_WRITE (David Hildenbrand) https://lkml.kernel.org/r/20210712083917.16361-1-david@redhat.com
This patch documents the new madvise() options, MADV_POPULATE_(READ|WRITE).
Request for folios (David Howells) https://lkml.kernel.org/r/3398985.1626104609@warthog.procyon.org.uk
David is working for improving local filesystem’s caching and network filesystem support library. He thinks the folio work would make his work easier, though it also makes some of his work challenging.