Active subsystems in linux-mm

100 subsystems with patch activity in the last 7 days, busiest first. Each links to its own dashboard: recent patches, active threads and reviewers for the paths that subsystem claims in MAINTAINERS.

• memory management
  386 messages in 7d · last 2026-09-05 03:05 · Andrew Morton
• damon
  120 messages in 7d · last 2026-09-04 00:28 · SJ Park
• memory management - core
  90 messages in 7d · last 2026-09-04 16:07 · Andrew Morton et al.
• kernel selftest framework
  75 messages in 7d · last 2026-09-04 22:51 · Shuah Khan et al.
• memory management - mglru (multi-gen lru)
  54 messages in 7d · last 2026-09-04 09:46 · Andrew Morton
• control group - memory resource controller (memcg)
  52 messages in 7d · last 2026-09-05 03:05 · Johannes Weiner et al.
• memory management - reclaim
  48 messages in 7d · last 2026-09-04 09:46 · Andrew Morton et al.
• documentation
  44 messages in 7d · last 2026-09-05 01:55 · Jonathan Corbet
• memory management - misc
  42 messages in 7d · last 2026-09-04 19:34 · Andrew Morton et al.
• memory management - thp (transparent huge page)
  35 messages in 7d · last 2026-09-04 15:11 · Andrew Morton et al.
• kernel virtual machine (kvm) Supported
  31 messages in 7d · last 2026-09-02 19:47 · Paolo Bonzini
• x86 architecture (32-bit and 64-bit)
  29 messages in 7d · last 2026-09-03 12:21 · Thomas Gleixner et al.
• memory management - memory policy and migration
  23 messages in 7d · last 2026-09-04 18:20 · Andrew Morton et al.
• arm64 port (aarch64 architecture)
  21 messages in 7d · last 2026-09-04 10:45 · Catalin Marinas et al.
• kernel virtual machine for x86 (kvm/x86) Supported
  21 messages in 7d · last 2026-08-31 00:26 · Sean Christopherson et al.
• hugetlb subsystem
  18 messages in 7d · last 2026-09-04 00:22 · Muchun Song et al.
• memblock and memory management initialization
  17 messages in 7d · last 2026-09-03 15:59 · Mike Rapoport
• scheduler
  16 messages in 7d · last 2026-09-04 18:20 · Ingo Molnar et al.
• memory management - page allocator
  16 messages in 7d · last 2026-09-04 16:09 · Andrew Morton et al.
• tracing
  16 messages in 7d · last 2026-09-04 16:07 · Steven Rostedt et al.
• memory mapping
  16 messages in 7d · last 2026-09-04 14:54 · Andrew Morton et al.
• exec & binfmt api, elf Supported
  15 messages in 7d · last 2026-09-04 16:07 · Kees Cook
• rust Supported
  15 messages in 7d · last 2026-09-02 13:28 · Miguel Ojeda
• page cache Supported
  14 messages in 7d · last 2026-09-04 19:31 · Matthew Wilcox et al.
• bpf [general] (safe dynamic programs and tools) Supported
  14 messages in 7d · last 2026-09-04 14:54 · Alexei Starovoitov et al.
• live update
  13 messages in 7d · last 2026-09-04 22:06 · Pasha Tatashin et al.
• slab allocator
  13 messages in 7d · last 2026-09-03 20:37 · Vlastimil Babka et al.
• tmpfs (shmem filesystem)
  13 messages in 7d · last 2026-09-03 11:57 · Hugh Dickins
• zswap compressed swap caching
  12 messages in 7d · last 2026-09-04 23:21 · Johannes Weiner et al.
• memory management - swap
  12 messages in 7d · last 2026-09-04 17:14 · Andrew Morton et al.
• generic include/asm header files
  12 messages in 7d · last 2026-09-04 10:49 · Arnd Bergmann
• loongarch
  12 messages in 7d · last 2026-09-04 10:10 · Huacai Chen
• risc-v architecture Supported
  12 messages in 7d · last 2026-09-03 12:21 · Paul Walmsley et al.
• s390 architecture Supported
  12 messages in 7d · last 2026-09-03 09:29 · Heiko Carstens et al.
• control group (cgroup)
  11 messages in 7d · last 2026-09-04 22:51 · Tejun Heo et al.
• drm drivers
  11 messages in 7d · last 2026-09-04 10:45 · David Airlie et al.
• memory management - gup (get user pages)
  10 messages in 7d · last 2026-09-04 12:37 · Andrew Morton et al.
• linux for powerpc (32-bit and 64-bit) Supported
  9 messages in 7d · last 2026-09-03 07:41 · Madhavan Srinivasan
• arm port Odd Fixes
  9 messages in 7d · last 2026-09-03 07:41 · Russell King
• memory mapping - madvise (memory advice)
  8 messages in 7d · last 2026-09-04 16:01 · Andrew Morton et al.
• memory management - rmap (reverse mapping)
  8 messages in 7d · last 2026-09-03 18:29 · Andrew Morton et al.
• vmalloc
  8 messages in 7d · last 2026-09-03 15:50 · Andrew Morton et al.
• superh
  8 messages in 7d · last 2026-09-03 07:41 · Yoshinori Sato et al.
• mips
  8 messages in 7d · last 2026-09-03 07:41 · Thomas Bogendoerfer
• xarray api [rust] Supported
  8 messages in 7d · last 2026-09-02 13:28 · Tamir Duberstein et al.
• networking [general]
  8 messages in 7d · last 2026-09-01 01:43 · "David S. Miller" et al.
• memory hot(un)plug
  7 messages in 7d · last 2026-09-03 12:21 · David Hildenbrand et al.
• cbs/etf/taprio qdiscs
  7 messages in 7d · last 2026-09-01 01:43 · Vinicius Costa Gomes
• tc subsystem
  7 messages in 7d · last 2026-09-01 01:43 · Jamal Hadi Salim et al.
• shrinker
  6 messages in 7d · last 2026-09-04 19:01 · Andrew Morton et al.
• bpf [selftests] (test runners & infrastructure)
  6 messages in 7d · last 2026-09-04 14:54 · Andrii Nakryiko et al.
• x86 mm
  6 messages in 7d · last 2026-09-03 09:29 · Dave Hansen et al.
• arm mali tyr drm driver Supported
  6 messages in 7d · last 2026-09-01 16:09 · Daniel Almeida et al.
• drm drivers and common infrastructure [rust] Supported
  6 messages in 7d · last 2026-09-01 16:09 · Danilo Krummrich et al.
• memory management - execmem
  5 messages in 7d · last 2026-09-03 15:50 · Andrew Morton et al.
• proc filesystem
  5 messages in 7d · last 2026-09-03 10:31
• sparc + ultrasparc (sparc/sparc64)
  5 messages in 7d · last 2026-09-03 07:41 · "David S. Miller" et al.
• memory management - rust
  5 messages in 7d · last 2026-09-02 13:27 · Alice Ryhl
• m68k architecture
  5 messages in 7d · last 2026-09-01 11:08 · Geert Uytterhoeven
• bpf [core]
  4 messages in 7d · last 2026-09-04 14:54 · Alexei Starovoitov et al.
• open firmware and flattened device tree
  4 messages in 7d · last 2026-09-04 10:45 · Rob Herring et al.
• kexec handover (kho)
  4 messages in 7d · last 2026-09-04 10:10 · Mike Rapoport et al.
• memory management - userfaultfd
  4 messages in 7d · last 2026-09-03 10:31 · Andrew Morton et al.
• openrisc architecture
  4 messages in 7d · last 2026-09-02 11:58 · Jonas Bonn et al.
• kernel virtual machine for s390 (kvm/s390) Supported
  4 messages in 7d · last 2026-09-02 06:15 · Christian Borntraeger et al.
• xarray Supported
  3 messages in 7d · last 2026-09-04 12:13 · Matthew Wilcox
• char and misc drivers Supported
  3 messages in 7d · last 2026-09-04 10:49 · Arnd Bergmann et al.
• drm drivers and misc gpu patches
  3 messages in 7d · last 2026-09-04 10:45 · Maarten Lankhorst et al.
• open firmware and flattened device tree bindings
  3 messages in 7d · last 2026-09-04 10:45 · Rob Herring et al.
• hwpoison memory failure handling
  3 messages in 7d · last 2026-09-04 08:30 · Miaohe Lin
• memory management - ksm (kernel samepage merging)
  3 messages in 7d · last 2026-09-04 08:30 · Andrew Morton et al.
• xfs filesystem Supported
  3 messages in 7d · last 2026-09-03 18:30 · Carlos Maiolino
• f2fs file system
  3 messages in 7d · last 2026-09-03 13:00 · Jaegeuk Kim et al.
• usb subsystem Supported
  3 messages in 7d · last 2026-09-03 11:20 · Greg Kroah-Hartman
• media input infrastructure (v4l/dvb)
  3 messages in 7d · last 2026-09-03 11:19 · Mauro Carvalho Chehab
• alpha port Odd Fixes
  3 messages in 7d · last 2026-09-03 07:41 · Richard Henderson et al.
• nfs, sunrpc, and lockd clients
  3 messages in 7d · last 2026-09-02 10:55 · Trond Myklebust et al.
• memory management - allocation profiling (alloc tag)
  3 messages in 7d · last 2026-09-02 08:18 · Suren Baghdasaryan
• memory mapping - locking
  3 messages in 7d · last 2026-09-01 11:08 · Andrew Morton et al.
• parisc architecture
  3 messages in 7d · last 2026-09-01 11:08 · "James E.J. Bottomley" et al.
• synopsys arc architecture Supported
  3 messages in 7d · last 2026-09-01 11:08 · Vineet Gupta
• c-sky architecture Supported
  3 messages in 7d · last 2026-09-01 11:08 · Guo Ren
• qualcomm hexagon architecture Supported
  3 messages in 7d · last 2026-09-01 11:08 · Brian Cain
• microblaze architecture Supported
  3 messages in 7d · last 2026-09-01 11:08 · Michal Simek
• nios2 architecture Supported
  3 messages in 7d · last 2026-09-01 11:08 · Dinh Nguyen et al.
• tensilica xtensa port (xtensa)
  3 messages in 7d · last 2026-09-01 11:08 · Chris Zankel et al.
• s390 mm Supported
  3 messages in 7d · last 2026-09-01 03:13 · Alexander Gordeev et al.
• tty layer and serial drivers Supported
  3 messages in 7d · last 2026-08-31 08:28 · Greg Kroah-Hartman et al.
• dma buffer sharing framework
  2 messages in 7d · last 2026-09-04 10:45 · Sumit Semwal et al.
• drm drivers for nvidia tegra Supported
  2 messages in 7d · last 2026-09-04 10:45 · Thierry Reding et al.
• bpf [memory management extensions]
  2 messages in 7d · last 2026-09-04 10:20 · Roman Gushchin et al.
• filesystems [iomap] Supported
  2 messages in 7d · last 2026-09-03 18:30 · Christian Brauner
• filesystems (vfs and infrastructure)
  2 messages in 7d · last 2026-09-03 18:29 · Alexander Viro et al.
• spi subsystem
  2 messages in 7d · last 2026-09-03 11:19 · Mark Brown
• xen hypervisor interface Supported
  2 messages in 7d · last 2026-09-03 10:32 · Juergen Gross et al.
• kasan
  2 messages in 7d · last 2026-09-03 10:31 · Andrey Ryabinin
• mmu gather and tlb invalidation
  2 messages in 7d · last 2026-09-03 10:31 · Will Deacon et al.
• memory management - secretmem
  2 messages in 7d · last 2026-09-03 09:29 · Andrew Morton et al.
• oracle cluster filesystem 2 (ocfs2) Supported
  2 messages in 7d · last 2026-09-03 09:05 · Mark Fasheh et al.
• dma mapping helpers Supported
  2 messages in 7d · last 2026-09-03 01:29 · Marek Szyprowski