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)

• HOTtoday [PATCH v5 00/22] iomap: convert to in-iter iomap_next() model
  2026-07-29 19:30 · 3 replies in 7d · Joanne Koong <joannelkoong@gmail.com>
• WARM1d [PATCH 0/2] ext4: ensure WRITE_ZEROES is power-failure-safe.
  2026-07-29 09:08 · 2 replies in 7d · Zhang Yi <hidden>
• HOTtoday [PATCH v4 00/21] iomap: convert to in-iter iomap_next() model
  2026-07-27 21:25 · 3 replies in 7d · Joanne Koong <joannelkoong@gmail.com>
• WARM1d [PATCH v5 0/20] fs: Fix missed inode write during fsync
  2026-07-27 10:50 · 2 replies in 7d · Jan Kara <jack@suse.cz>

Active reviewers (last 30 days)

• Jan Kara <jack@suse.cz>
  38 attestations (3 Acked-by, 4 Reported-by, 23 Reviewed-by, 8 Suggested-by) · last on 2026-07-29
• Christoph Hellwig <hch@lst.de>
  15 attestations (14 Reviewed-by, 1 Suggested-by) · last on 2026-07-29
• Darrick J. Wong <djwong@kernel.org>
  7 attestations (7 Reviewed-by) · last on 2026-07-29
• Eric Biggers <ebiggers@kernel.org>
  6 attestations (6 Acked-by) · last on 2026-07-21
• Theodore Ts'o <tytso@mit.edu>
  3 attestations (3 Acked-by) · last on 2026-07-27
• <hidden>
  3 attestations (3 Reported-by) · last on 2026-07-03
• Baokun Li <libaokun@linux.alibaba.com>
  2 attestations (2 Reviewed-by) · last on 2026-07-29
• Joanne Koong <joannelkoong@gmail.com>
  2 attestations (2 Reviewed-by) · last on 2026-07-29
• Fengnan Chang <hidden>
  1 attestation (1 Reviewed-by) · last on 2026-07-29
• David Sterba <dsterba@suse.com>
  1 attestation (1 Acked-by) · last on 2026-07-21

Recent patches

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

• HOTtoday 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>
• HOTtoday REVIEWED: 10 (10M) [PATCH v5 10/22] ext4: convert iomap ops to ->iomap_next()
  2026-07-29 · Joanne Koong <joannelkoong@gmail.com>
• HOTtoday REVIEWED: 3 (2M) [PATCH v5 03/22] iomap: decouple simple direct I/O reads from iomap_dio_rw
  2026-07-29 · Joanne Koong <joannelkoong@gmail.com>
• WARM1d [PATCH 2/2] ext4: protect WRITE_ZEROES written extents with orphan list
  2026-07-29 · Zhang Yi <hidden>
• WARM1d [PATCH 1/2] ext4: export converted block count from ext4_convert_unwritten_extents()
  2026-07-29 · Zhang Yi <hidden>
• HOTtoday 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>
• HOTtoday REVIEWED: 10 (10M) [PATCH v4 09/21] ext4: convert iomap ops to ->iomap_next()
  2026-07-27 · Joanne Koong <joannelkoong@gmail.com>
• HOTtoday REVIEWED: 1 (1M) [PATCH v4 02/21] iomap: decouple simple direct I/O reads from iomap_dio_rw
  2026-07-27 · Joanne Koong <joannelkoong@gmail.com>
• WARM1d [PATCH v5 17/20] ext4: Fix data integrity writeout issues in nojournal mode
  2026-07-27 · Jan Kara <jack@suse.cz>
• WARM1d REVIEWED: 6 (6M) [PATCH v5 04/20] ext4: Allocate mapping_metadata_bhs struct on demand
  2026-07-27 · Jan Kara <jack@suse.cz>
• WARM2d [PATCH 2/3] iomap: decouple simple direct I/O reads from iomap_dio_rw
  2026-07-23 · Christoph Hellwig <hch@lst.de>
• WARM1d [PATCH 2/3] iomap: decouple simple direct I/O reads from iomap_dio_rw
  2026-07-22 · Christoph Hellwig <hch@lst.de>
• WARM3d [PATCH v13 08/23] fsverity: hoist statx reporting of fs-verity flag
  2026-07-21 · Andrey Albershteyn <aalbersh@kernel.org>
• WARM3d REVIEWED: 9 (9M) [PATCH v13 04/23] fsverity: hoist pagecache_read from f2fs/ext4 to fsverity
  2026-07-21 · Andrey Albershteyn <aalbersh@kernel.org>
• WARM3d REVIEWED: 9 (9M) [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>
• COOLING7d Re: [PATCH v3 00/20] iomap: convert to in-iter iomap_next() model
  2026-07-21 · Christoph Hellwig <hch@lst.de>
• COOLING7d REVIEWED: 13 (13M) [PATCH v3 19/20] iomap: pass iomap_iter_next_fn directly instead of struct iomap_ops
  2026-07-20 · Joanne Koong <joannelkoong@gmail.com>
• COOLING7d REVIEWED: 9 (9M) [PATCH v3 08/20] ext4: convert iomap ops to ->iomap_next()
  2026-07-20 · Joanne Koong <joannelkoong@gmail.com>
• COOLING7d [PATCH v3 03/20] iomap: skip the finishing iomap_iter() on the simple DIO read fast path
  2026-07-20 · Joanne Koong <joannelkoong@gmail.com>
• COOLING9d REVIEWED: 9 (9M) [PATCH v12 04/21] fsverity: hoist pagecache_read from f2fs/ext4 to fsverity
  2026-07-20 · Andrey Albershteyn <aalbersh@kernel.org>
• COOLING9d 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>
• WARM3d [PATCH v4 17/21] ext4: Fix data integrity writeout issues in nojournal mode
  2026-07-16 · Jan Kara <jack@suse.cz>
• WARM3d REVIEWED: 6 (6M) [PATCH v4 04/21] ext4: Allocate mapping_metadata_bhs struct on demand
  2026-07-16 · Jan Kara <jack@suse.cz>
• COOLING9d [PATCH] ext4: skip i_extra_isize expansion during inode eviction
  2026-07-15 · Helen Koike <hidden>
• COOLING7d REVIEWED: 9 (9M) [PATCH v4 8/9] ext4: write back partial-zeroed edges in WRITE_ZEROES
  2026-07-14 · Zhang Yi <hidden>
• COOLING7d REVIEWED: 9 (9M) [PATCH v4 5/9] ext4: clarify return semantics of ext4_load_tail_bh()
  2026-07-14 · Zhang Yi <hidden>
• COOLING7d REVIEWED: 9 (9M) [PATCH v4 4/9] ext4: move partial block zeroing earlier in ext4_zero_range()
  2026-07-14 · Zhang Yi <hidden>
• COOLING7d REVIEWED: 9 (9M) [PATCH v4 6/9] ext4: track partial-zero outcome per edge in ext4_zero_partial_blocks()
  2026-07-14 · Zhang Yi <hidden>
• COOLING7d REVIEWED: 9 (9M) [PATCH v4 9/9] ext4: protect WRITE_ZEROES written extents with orphan list
  2026-07-14 · Zhang Yi <hidden>
• COOLING7d REVIEWED: 9 (9M) [PATCH v4 7/9] ext4: zero out whole block for clean edges in WRITE_ZEROES
  2026-07-14 · Zhang Yi <hidden>

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: 10 (10M) [PATCH 01/16] fs,fsverity: reject size changes on fsverity files in setattr_prepare
  2026-01-26 · Christoph Hellwig <hch@lst.de> · 2 Reviewed-by
• STALE183d REVIEWED: 10 (10M) [PATCH 02/16] fs,fsverity: clear out fsverity_info from common code
  2026-01-26 · Christoph Hellwig <hch@lst.de> · 2 Reviewed-by
• STALE183d REVIEWED: 2 (1M) [PATCH 05/16] fsverity: pass struct file to ->write_merkle_tree_block
  2026-01-26 · Christoph Hellwig <hch@lst.de> · 2 Reviewed-by
• STALE183d REVIEWED: 11 (10M) [PATCH 06/16] fsverity: start consolidating pagecache code
  2026-01-26 · Christoph Hellwig <hch@lst.de> · 3 Reviewed-by
• STALE183d REVIEWED: 1 (1M) [PATCH 11/16] fsverity: push out fsverity_info lookup
  2026-01-26 · Christoph Hellwig <hch@lst.de> · 1 Reviewed-by
• STALE183d REVIEWED: 1 (1M) [PATCH 13/16] ext4: consolidate fsverity_info lookup
  2026-01-26 · Christoph Hellwig <hch@lst.de> · 1 Reviewed-by
• STALE162d REVIEWED: 1 (1M) [PATCH 10/15] fsverity: push out fsverity_info lookup
  2026-01-28 · Christoph Hellwig <hch@lst.de> · 1 Reviewed-by
• STALE162d REVIEWED: 1 (1M) [PATCH 12/15] ext4: consolidate fsverity_info lookup
  2026-01-28 · Christoph Hellwig <hch@lst.de> · 1 Reviewed-by
• STALE162d REVIEWED: 1 (1M) [PATCH 15/15] fsverity: use a hashtable to find the fsverity_info
  2026-01-28 · Christoph Hellwig <hch@lst.de> · 1 Reviewed-by
• STALE125d REVIEWED: 2 (0M) [PATCH] ext4: avoid infinite loops caused by data conflicts
  2026-03-01 · Edward Adam Davis <hidden> · 2 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.

• STALE191d [PATCH 1/6] fs,fsverity: reject size changes on fsverity files in setattr_prepare
  2026-01-19 · Christoph Hellwig <hch@lst.de>
• STALE191d [PATCH 2/6] fs,fsverity: clear out fsverity_info from common code
  2026-01-19 · Christoph Hellwig <hch@lst.de>
• STALE191d [PATCH 5/6] fsverity: pass struct file to ->write_merkle_tree_block
  2026-01-19 · Christoph Hellwig <hch@lst.de>
• STALE191d [PATCH 6/6] fsverity: kick off hash readahead at data I/O submission time
  2026-01-19 · Christoph Hellwig <hch@lst.de>
• STALE191d [PATCH 08/12] mm: update all remaining mmap_prepare users to use vma_flags_t
  2026-01-19 · Lorenzo Stoakes <hidden>
• STALE162d LANDED [PATCH 04/11] fsverity: kick off hash readahead at data I/O submission time
  2026-02-02 · Christoph Hellwig <hch@lst.de>
• STALE168d [PATCH -next v2 04/22] ext4: factor out journalled block zeroing range
  2026-02-03 · Zhang Yi <yi.zhang@huawei.com>
• STALE168d [PATCH -next v2 01/22] ext4: make ext4_block_zero_page_range() pass out did_zero
  2026-02-03 · Zhang Yi <yi.zhang@huawei.com>
• STALE168d [PATCH -next v2 06/22] ext4: don't zero partial block under an active handle when truncating down
  2026-02-03 · Zhang Yi <yi.zhang@huawei.com>
• STALE168d [PATCH -next v2 02/22] ext4: make ext4_block_truncate_page() return zeroed length
  2026-02-03 · Zhang Yi <yi.zhang@huawei.com>