Active subsystems in linux-ext4

57 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.

• ext4 file system
  33 messages in 7d · last 2026-10-26 11:59 · "Theodore Ts'o"
• networking [general]
  6 messages in 7d · last 2026-10-21 03:16 · "David S. Miller" et al.
• documentation
  3 messages in 7d · last 2026-10-25 13:16 · Jonathan Corbet
• ext2 file system
  3 messages in 7d · last 2026-10-24 22:27 · Jan Kara
• memory management
  3 messages in 7d · last 2026-10-23 12:45 · Andrew Morton
• kernel nfsd, sunrpc, and lockd servers Supported
  3 messages in 7d · last 2026-10-21 03:17 · Chuck Lever et al.
• generic include/asm header files
  3 messages in 7d · last 2026-10-21 03:17 · Arnd Bergmann
• security subsystem Supported
  3 messages in 7d · last 2026-10-21 03:16 · Paul Moore et al.
• abi/api
  3 messages in 7d · last 2026-10-21 03:16
• fsverity: read-only file-based authenticity protection Supported
  2 messages in 7d · last 2026-10-25 20:49 · Eric Biggers et al.
• tmpfs (shmem filesystem)
  2 messages in 7d · last 2026-10-23 12:45 · Hugh Dickins
• nfs, sunrpc, and lockd clients
  2 messages in 7d · last 2026-10-21 03:17 · Trond Myklebust et al.
• networking [unix sockets]
  2 messages in 7d · last 2026-10-21 03:16 · Kuniyuki Iwashima
• networking [sockets]
  2 messages in 7d · last 2026-10-21 03:16 · Eric Dumazet et al.
• alpha port Odd Fixes
  2 messages in 7d · last 2026-10-21 03:16 · Richard Henderson et al.
• mips
  2 messages in 7d · last 2026-10-21 03:16 · Thomas Bogendoerfer
• parisc architecture
  2 messages in 7d · last 2026-10-21 03:16 · "James E.J. Bottomley" et al.
• sparc + ultrasparc (sparc/sparc64)
  2 messages in 7d · last 2026-10-21 03:16 · "David S. Miller" et al.
• integrity measurement architecture (ima) Supported
  2 messages in 7d · last 2026-10-21 03:16 · Mimi Zohar et al.
• extended verification module (evm) Supported
  2 messages in 7d · last 2026-10-21 03:16 · Mimi Zohar et al.
• btrfs file system
  1 message in 7d · last 2026-10-25 20:49 · David Sterba
• xfs filesystem Supported
  1 message in 7d · last 2026-10-23 12:45 · Carlos Maiolino
• f2fs file system
  1 message in 7d · last 2026-10-23 12:45 · Jaegeuk Kim et al.
• kernel smb3 server (ksmbd)
  1 message in 7d · last 2026-10-21 03:17 · Namjae Jeon et al.
• overlay filesystem Supported
  1 message in 7d · last 2026-10-21 03:17 · Miklos Szeredi et al.
• kernel selftest framework
  1 message in 7d · last 2026-10-21 03:17 · Shuah Khan et al.
• audit subsystem Supported
  1 message in 7d · last 2026-10-21 03:17 · Paul Moore et al.
• ptrace support
  1 message in 7d · last 2026-10-21 03:17 · Oleg Nesterov
• io_uring
  1 message in 7d · last 2026-10-21 03:17 · Jens Axboe
• tty layer and serial drivers Supported
  1 message in 7d · last 2026-10-21 03:16 · Greg Kroah-Hartman et al.
• networking [labeled] (netlabel, labeled ipsec, secmark) Supported
  1 message in 7d · last 2026-10-21 03:16 · Paul Moore
• apparmor security module Supported
  1 message in 7d · last 2026-10-21 03:16 · John Johansen et al.
• integrity policy enforcement (ipe) Supported
  1 message in 7d · last 2026-10-21 03:16 · Fan Wu
• selinux security module Supported
  1 message in 7d · last 2026-10-21 03:16 · Paul Moore et al.
• proc filesystem
  1 message in 7d · last 2026-10-21 03:16
• arm port Odd Fixes
  1 message in 7d · last 2026-10-21 03:16 · Russell King
• arm64 port (aarch64 architecture)
  1 message in 7d · last 2026-10-21 03:16 · Catalin Marinas et al.
• m68k architecture
  1 message in 7d · last 2026-10-21 03:16 · Geert Uytterhoeven
• microblaze architecture Supported
  1 message in 7d · last 2026-10-21 03:16 · Michal Simek
• linux for powerpc (32-bit and 64-bit) Supported
  1 message in 7d · last 2026-10-21 03:16 · Madhavan Srinivasan
• s390 architecture Supported
  1 message in 7d · last 2026-10-21 03:16 · Heiko Carstens et al.
• superh
  1 message in 7d · last 2026-10-21 03:16 · Yoshinori Sato et al.
• x86 architecture (32-bit and 64-bit)
  1 message in 7d · last 2026-10-21 03:16 · Thomas Gleixner et al.
• x86 entry code
  1 message in 7d · last 2026-10-21 03:16 · Andy Lutomirski
• tensilica xtensa port (xtensa)
  1 message in 7d · last 2026-10-21 03:16 · Chris Zankel et al.
• filesystems (vfs and infrastructure)
  1 message in 7d · last 2026-10-21 03:16 · Alexander Viro et al.
• diskquota
  1 message in 7d · last 2026-10-21 03:16 · Jan Kara
• ecrypt file system Odd Fixes
  1 message in 7d · last 2026-10-21 03:16 · Tyler Hicks
• block layer
  1 message in 7d · last 2026-10-21 03:16 · Jens Axboe
• ublk userspace block driver
  1 message in 7d · last 2026-10-21 03:16 · Ming Lei
• keys/keyrings
  1 message in 7d · last 2026-10-21 03:16 · David Howells et al.
• fscrypt: file system level encryption support Supported
  1 message in 7d · last 2026-10-21 03:16 · Eric Biggers et al.
• filesystems [idmapped mounts]
  1 message in 7d · last 2026-10-21 03:15 · Christian Brauner et al.
• memory management - oom killer
  1 message in 7d · last 2026-10-21 03:15 · Michal Hocko
• common internet file system client (cifs and smb3) Supported
  1 message in 7d · last 2026-10-21 03:15 · Paulo Alcantara et al.
• bluetooth subsystem Supported
  1 message in 7d · last 2026-10-21 03:15 · Marcel Holtmann et al.
• uuid helpers
  1 message in 7d · last 2026-10-21 03:15