btrfs file system · Maintained

Maintainers

• M Chris Mason <clm@fb.com>
• M David Sterba <dsterba@suse.com>

Paths

• F Documentation/filesystems/btrfs.rst
• F fs/btrfs/
• F include/linux/btrfs*
• F include/trace/events/btrfs.h
• F include/uapi/linux/btrfs*

Last 30 days

Active reviewers (last 30 days)

• Eric Biggers <ebiggers@kernel.org>
  4 attestations (4 Acked-by) · last on 2026-08-14
• Darrick J. Wong <djwong@kernel.org>
  3 attestations (3 Reviewed-by) · last on 2026-08-14
• David Sterba <dsterba@suse.com>
  2 attestations (2 Acked-by) · last on 2026-08-14
• Christoph Hellwig <hch@lst.de>
  1 attestation (1 Reviewed-by) · last on 2026-08-14

Recent patches

Most-recent 30 patches in this subsystem on linux-ext4 (capped at 30), ordered by date desc.

• COOLING11d REVIEWED: 9 (9M) [PATCH v15 06/25] fsverity: hoist statx reporting of fs-verity flag
  2026-08-14 · Andrey Albershteyn <aalbersh@kernel.org>
• COOLING11d REVIEWED: 8 (8M) [PATCH v15 03/25] fsverity: pass digest size and hash of the all-zeroes block to ->write
  2026-08-14 · Andrey Albershteyn <aalbersh@kernel.org>
• COLD20d REVIEWED: 4 (4M) [PATCH v14 07/21] fsverity: hoist statx reporting of fs-verity flag
  2026-08-03 · Andrey Albershteyn <aalbersh@kernel.org>
• COLD20d REVIEWED: 8 (8M) [PATCH v14 03/21] fsverity: pass digest size and hash of the all-zeroes block to ->write
  2026-08-03 · Andrey Albershteyn <aalbersh@kernel.org>
• COLD31d REVIEWED: 13 (13M) [PATCH v5 21/22] iomap: pass iomap_iter_next_fn directly instead of struct iomap_ops
  2026-07-29 · Joanne Koong <joannelkoong@gmail.com>
• COLD31d REVIEWED: 3 (3M) [PATCH v5 07/22] btrfs: convert iomap ops to ->iomap_next()
  2026-07-29 · Joanne Koong <joannelkoong@gmail.com>
• COLD33d REVIEWED: 13 (13M) [PATCH v4 20/21] iomap: pass iomap_iter_next_fn directly instead of struct iomap_ops
  2026-07-27 · Joanne Koong <joannelkoong@gmail.com>
• COLD33d REVIEWED: 3 (3M) [PATCH v4 06/21] btrfs: convert iomap ops to ->iomap_next()
  2026-07-27 · Joanne Koong <joannelkoong@gmail.com>
• COLD35d [PATCH v13 08/23] fsverity: hoist statx reporting of fs-verity flag
  2026-07-21 · Andrey Albershteyn <aalbersh@kernel.org>
• COLD35d REVIEWED: 8 (8M) [PATCH v13 03/23] fsverity: pass digest size and hash of the all-zeroes block to ->write
  2026-07-21 · Andrey Albershteyn <aalbersh@kernel.org>
• COLD41d REVIEWED: 5 (5M) [PATCH v12 03/21] fsverity: pass digest size and hash of the all-zeroes block to ->write
  2026-07-20 · Andrey Albershteyn <aalbersh@kernel.org>
• COLD42d REVIEWED: 5 (5M) [PATCH v11 03/20] fsverity: pass digest size and hash of the all-zeroes block to ->write
  2026-07-10 · Andrey Albershteyn <aalbersh@kernel.org>
• COLD42d [PATCH v2 17/18] iomap: pass iomap_next_fn directly instead of struct iomap_ops
  2026-07-01 · Joanne Koong <joannelkoong@gmail.com>
• STALE68d [PATCH RFC v2 12/18] fs: look up superblocks via the device table in fs_holder_ops
  2026-06-16 · Christian Brauner <brauner@kernel.org>
• STALE68d REVIEWED: 1 (0M) [PATCH RFC v2 10/18] btrfs: open via dedicated fs bdev helpers
  2026-06-16 · Christian Brauner <brauner@kernel.org>
• WARM2d [PATCH RFC 5/8] btrfs: open via dedicated fs bdev helpers
  2026-06-02 · Christian Brauner <brauner@kernel.org>
• STALE90d [PATCH v2 4/4] fs: retire sget()
  2026-05-29 · Christian Brauner <brauner@kernel.org>
• STALE89d [PATCH 4/8] fs: retire sget()
  2026-05-26 · Christian Brauner <brauner@kernel.org>
• STALE68d REVIEWED: 5 (5M) [PATCH v10 05/22] fsverity: pass digest size and hash of the all-zeroes block to ->write
  2026-05-20 · Andrey Albershteyn <aalbersh@kernel.org>
• STALE105d [PATCH 09/12] swap: push down setting sis->bdev into ->swap_activate
  2026-05-12 · Christoph Hellwig <hch@lst.de>
• STALE105d [PATCH 03/12] swap,fs: move swapfile operations to struct file_operations
  2026-05-12 · Christoph Hellwig <hch@lst.de>
• STALE105d [PATCH 02/12] swap: move boilerplate code into the core swap code
  2026-05-12 · Christoph Hellwig <hch@lst.de>
• STALE68d REVIEWED: 5 (5M) [PATCH v9 05/22] fsverity: pass digest size and hash of the all-zeroes block to ->write
  2026-04-28 · Andrey Albershteyn <aalbersh@kernel.org>
• STALE131d REVIEWED: 5 (5M) [PATCH v8 05/22] fsverity: pass digest size and hash of the all-zeroes block to ->write
  2026-04-20 · Andrey Albershteyn <aalbersh@kernel.org>
• STALE138d REVIEWED: 5 (5M) [PATCH v7 05/22] fsverity: pass digest size and hash of the all-zeroes block to ->write
  2026-04-09 · Andrey Albershteyn <aalbersh@kernel.org>
• STALE144d [PATCH 6/6] exfat: map ptime to exFAT creation time with rename-over
  2026-04-05 · Sean Smith <hidden>
• STALE144d [PATCH 2/6] btrfs: add provenance time (ptime) support
  2026-04-05 · Sean Smith <hidden>
• STALE144d [PATCH 1/6] vfs: add provenance_time (ptime) infrastructure
  2026-04-05 · Sean Smith <hidden>
• STALE151d REVIEWED: 1 (1M) [PATCH v6 04/22] fsverity: pass digest size and hash of the empty block to ->write
  2026-03-31 · Andrey Albershteyn <aalbersh@kernel.org>
• STALE126d [PATCH v2 2/3] btrfs: derive f_fsid from on-disk fsuuid and dev_t
  2026-03-21 · Anand Jain <asj@kernel.org>

Needs attention (review trailers in, no pickup)

Patches with review trailers that haven't landed in mainline and haven't been Acked by a maintainer. Oldest first.

• STALE68d REVIEWED: 1 (0M) [PATCH RFC v2 10/18] btrfs: open via dedicated fs bdev helpers
  2026-06-16 · Christian Brauner <brauner@kernel.org> · 1 Tested-by

Quiet for 30+ days

Patches with no review trailers and no replies. Either the author is heads-down elsewhere or these slipped through. Oldest first.

• STALE126d [PATCH v2 1/3] btrfs: use on-disk uuid for s_uuid in temp_fsid mounts
  2026-03-21 · Anand Jain <asj@kernel.org>
• STALE126d [PATCH v2 2/3] btrfs: derive f_fsid from on-disk fsuuid and dev_t
  2026-03-21 · Anand Jain <asj@kernel.org>
• STALE144d [PATCH 1/6] vfs: add provenance_time (ptime) infrastructure
  2026-04-05 · Sean Smith <hidden>
• STALE144d [PATCH 2/6] btrfs: add provenance time (ptime) support
  2026-04-05 · Sean Smith <hidden>
• STALE144d [PATCH 6/6] exfat: map ptime to exFAT creation time with rename-over
  2026-04-05 · Sean Smith <hidden>
• STALE89d [PATCH 4/8] fs: retire sget()
  2026-05-26 · Christian Brauner <brauner@kernel.org>
• WARM2d [PATCH RFC 5/8] btrfs: open via dedicated fs bdev helpers
  2026-06-02 · Christian Brauner <brauner@kernel.org>
• STALE68d [PATCH RFC v2 12/18] fs: look up superblocks via the device table in fs_holder_ops
  2026-06-16 · Christian Brauner <brauner@kernel.org>