ext4 file system · Maintained

Maintainers

• M "Theodore Ts'o" <tytso@mit.edu>
• R Andreas Dilger <adilger.kernel@dilger.ca>
• R Baokun Li <libaokun@linux.alibaba.com>
• R Jan Kara <jack@suse.cz>
• R Ojaswin Mujoo <ojaswin@linux.ibm.com>
• R Ritesh Harjani <ritesh.list@gmail.com>
• R Zhang Yi <yi.zhang@huawei.com>

Paths

• F Documentation/filesystems/ext4/
• F fs/ext4/
• F include/trace/events/ext4.h
• F include/uapi/linux/ext4.h

Last 30 days

Most active threads (last 7 days)

• COOLING4d [PATCH v2 00/17] fscrypt: Standardize on blk-crypto
  2026-07-05 19:48 · 5 replies in 7d · Eric Biggers <ebiggers@kernel.org>

Active reviewers (last 30 days)

• Christoph Hellwig <hch@lst.de>
  4 attestations (4 Reviewed-by) · last on 2026-07-05
• Jan Kara <jack@suse.cz>
  1 attestation (1 Reviewed-by) · last on 2026-06-16

Recent patches

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

• COOLING4d REVIEWED: 4 (4M) [PATCH v2 13/17] fscrypt: Remove fscrypt_dio_supported()
  2026-07-05 · Eric Biggers <ebiggers@kernel.org>
• COOLING4d [PATCH v2 09/17] ext4: Further de-generalize the bio postprocessing code
  2026-07-05 · Eric Biggers <ebiggers@kernel.org>
• COOLING4d REVIEWED: 4 (4M) [PATCH v2 08/17] ext4: Make ext4_bio_write_folio() return void
  2026-07-05 · Eric Biggers <ebiggers@kernel.org>
• COOLING4d REVIEWED: 4 (4M) [PATCH v2 07/17] ext4: Remove fs-layer file contents en/decryption code
  2026-07-05 · Eric Biggers <ebiggers@kernel.org>
• COOLING4d REVIEWED: 4 (4M) [PATCH v2 05/17] fscrypt: Always use blk-crypto for contents on block-based filesystems
  2026-07-05 · Eric Biggers <ebiggers@kernel.org>
• COOLING4d [PATCH v2 17/18] iomap: pass iomap_next_fn directly instead of struct iomap_ops
  2026-07-01 · Joanne Koong <joannelkoong@gmail.com>
• COOLING11d [PATCH 2/2] ext4: add unraid mount option for single-disk-per-group mode
  2026-06-24 · Yu Kuai <yukuai@kernel.org>
• COOLING14d [PATCH 12/16] fscrypt: Remove fscrypt_dio_supported()
  2026-06-24 · Eric Biggers <ebiggers@kernel.org>
• COOLING14d [PATCH 07/16] ext4: Make ext4_bio_write_folio() return void
  2026-06-24 · Eric Biggers <ebiggers@kernel.org>
• COOLING14d [PATCH 08/16] ext4: Further de-generalize the bio postprocessing code
  2026-06-24 · Eric Biggers <ebiggers@kernel.org>
• COOLING14d [PATCH 06/16] ext4: Remove fs-layer file contents en/decryption code
  2026-06-24 · Eric Biggers <ebiggers@kernel.org>
• COOLING14d [PATCH 05/16] fscrypt: Always use blk-crypto for contents on block-based filesystems
  2026-06-24 · Eric Biggers <ebiggers@kernel.org>
• COLD15d REVIEWED: 9 (9M) [PATCH RFC v2 11/18] ext4: open via dedicated fs bdev helpers
  2026-06-16 · Christian Brauner <brauner@kernel.org>
• COLD15d [PATCH RFC v2 05/18] ext4: use anonymous devices for KUnit test superblocks
  2026-06-16 · Christian Brauner <brauner@kernel.org>
• COLD23d [PATCH RFC 6/8] ext4: open via dedicated fs bdev helpers
  2026-06-02 · Christian Brauner <brauner@kernel.org>
• COLD53d [PATCH 03/12] swap,fs: move swapfile operations to struct file_operations
  2026-05-12 · Christoph Hellwig <hch@lst.de>
• COLD53d [PATCH 02/12] swap: move boilerplate code into the core swap code
  2026-05-12 · Christoph Hellwig <hch@lst.de>
• STALE99d [PATCH 40/42] ext4: Track metadata bhs in fs-private inode part
  2026-03-26 · Jan Kara <jack@suse.cz>
• STALE99d REVIEWED: 4 (4M) [PATCH 32/42] fs: Switch inode_has_buffers() to take mapping_metadata_bhs
  2026-03-26 · Jan Kara <jack@suse.cz>
• STALE99d REVIEWED: 6 (6M) [PATCH 19/42] ext4: Sync and invalidate metadata buffers from ext4_evict_inode()
  2026-03-26 · Jan Kara <jack@suse.cz>
• STALE99d REVIEWED: 6 (6M) [PATCH 01/42] ext4: Use inode_has_buffers()
  2026-03-26 · Jan Kara <jack@suse.cz>
• STALE106d [PATCH 38/41] ext4: Track metadata bhs in fs-private inode part
  2026-03-20 · Jan Kara <jack@suse.cz>
• STALE106d [PATCH 30/41] fs: Switch inode_has_buffers() to take mapping_metadata_bhs
  2026-03-20 · Jan Kara <jack@suse.cz>
• STALE106d REVIEWED: 6 (6M) [PATCH 17/41] ext4: Sync and invalidate metadata buffers from ext4_evict_inode()
  2026-03-20 · Jan Kara <jack@suse.cz>
• STALE106d REVIEWED: 6 (6M) [PATCH 01/41] ext4: Use inode_has_buffers()
  2026-03-20 · Jan Kara <jack@suse.cz>
• STALE85d [PATCH 04/61] ext4: Prefer IS_ERR_OR_NULL over manual NULL check
  2026-03-10 · Philipp Hahn <hidden>
• STALE98d [PATCH 2/8] fs: use rest_of_page() macro where appropriate
  2026-03-04 · Yury Norov <hidden>
• STALE129d [PATCH] block: remove bdev_nonrot()
  2026-02-26 · Damien Le Moal <dlemoal@kernel.org>
• STALE179d REVIEWED: 4 (4M) [PATCH 9/9] blk-crypto: handle the fallback above the block layer
  2026-01-09 · Christoph Hellwig <hch@lst.de>
• STALE183d REVIEWED: 4 (4M) [PATCH 9/9] blk-crypto: handle the fallback above the block layer
  2026-01-06 · Christoph Hellwig <hch@lst.de>

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.

• STALE183d REVIEWED: 4 (4M) [PATCH 9/9] blk-crypto: handle the fallback above the block layer
  2026-01-06 · Christoph Hellwig <hch@lst.de> · 1 Reviewed-by
• STALE179d REVIEWED: 4 (4M) [PATCH 9/9] blk-crypto: handle the fallback above the block layer
  2026-01-09 · Christoph Hellwig <hch@lst.de> · 1 Reviewed-by
• COLD15d REVIEWED: 9 (9M) [PATCH RFC v2 11/18] ext4: open via dedicated fs bdev helpers
  2026-06-16 · Christian Brauner <brauner@kernel.org> · 1 Reviewed-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.

• STALE98d [PATCH 2/8] fs: use rest_of_page() macro where appropriate
  2026-03-04 · Yury Norov <hidden>
• STALE106d [PATCH 38/41] ext4: Track metadata bhs in fs-private inode part
  2026-03-20 · Jan Kara <jack@suse.cz>
• STALE99d [PATCH 40/42] ext4: Track metadata bhs in fs-private inode part
  2026-03-26 · Jan Kara <jack@suse.cz>