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)

• WARM1d [RFC PATCH v4 0/3] ext4: speed up fast commit on random writes
  2026-07-30 00:39 · 3 replies in 7d · Daejun Park <hidden>
• HOTtoday [PATCH] ext4: don't enable DAX on new encrypted files
  2026-07-30 17:57 · 0 replies in 7d · Eric Biggers <ebiggers@kernel.org>
• WARM2d [RFC PATCH 0/9] ext4: phase out inline data write paths for regular files
  2026-07-27 11:00 · 9 replies in 7d · Yun Zhou <hidden>
• HOTtoday [PATCH 0/2] ext4: ensure WRITE_ZEROES is power-failure-safe.
  2026-07-29 09:08 · 2 replies in 7d · Zhang Yi <hidden>
• WARM1d [PATCH] ext4: turn off DAX on new files when encryption is set
  2026-07-27 20:13 · 1 reply in 7d · Ojaswin Mujoo <ojaswin@linux.ibm.com>
• WARM2d [PATCH 1/1] ext4: fix incorrect function call when initializing s_resgid
  2026-07-27 10:41 · 0 replies in 7d · Jiazi Liu <hidden>
• COOLING6d Linux 6.12.98
  2026-07-25 06:05 · 1 reply in 7d · Greg Kroah-Hartman <gregkh@linuxfoundation.org>
• HOTtoday [PATCH] ext4: Reduce object size of ext4_msg uses
  2026-07-25 01:23 · 0 replies in 7d · Joe Perches <joe@perches.com>

Active reviewers (last 30 days)

• Jan Kara <jack@suse.cz>
  35 attestations (4 Reported-by, 22 Reviewed-by, 9 Suggested-by) · last on 2026-07-29
• <hidden>
  7 attestations (6 Reported-by, 1 Tested-by) · last on 2026-07-18
• <hidden>
  5 attestations (5 Reported-by) · last on 2026-07-27
• <hidden>
  3 attestations (3 Reported-by) · last on 2026-07-03
• Disha Goel <hidden>
  2 attestations (2 Reported-by) · last on 2026-07-30
• <hidden>
  2 attestations (2 Reported-by) · last on 2026-07-06
• Ojaswin Mujoo <ojaswin@linux.ibm.com>
  1 attestation (1 Reported-by) · last on 2026-07-30
• <hidden>
  1 attestation (1 Reported-by) · last on 2026-07-24
• <hidden>
  1 attestation (1 Reported-by) · last on 2026-07-23
• Baokun Li <hidden>
  1 attestation (1 Reviewed-by) · last on 2026-07-13

Recent patches

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

• HOTtoday [PATCH] ext4: don't enable DAX on new encrypted files
  2026-07-30 · Eric Biggers <ebiggers@kernel.org>
• DORMANTno replies [RFC PATCH v4 3/3] ext4: fast commit: bound the tracked range count
  2026-07-30 · Daejun Park <hidden>
• WARM1d [RFC PATCH v4 2/3] ext4: fast commit: keep the first range inline, allocate the tree lazily
  2026-07-30 · Daejun Park <hidden>
• WARM1d [RFC PATCH v4 1/3] ext4: fast commit: track disjoint modified ranges in a private rbtree
  2026-07-30 · Daejun Park <hidden>
• HOTtoday [PATCH 2/2] ext4: protect WRITE_ZEROES written extents with orphan list
  2026-07-29 · Zhang Yi <hidden>
• HOTtoday [PATCH 1/2] ext4: export converted block count from ext4_convert_unwritten_extents()
  2026-07-29 · Zhang Yi <hidden>
• WARM1d Re: [PATCH] ext4: turn off DAX on new files when encryption is set
  2026-07-27 · Eric Biggers <ebiggers@kernel.org>
• WARM2d [RFC PATCH 2/9] ext4: stop creating inline data for new regular files
  2026-07-27 · Yun Zhou <hidden>
• WARM2d [RFC PATCH 8/9] ext4: document inline_data deprecation
  2026-07-27 · Yun Zhou <hidden>
• WARM2d [RFC PATCH 7/9] ext4: remove DA convert path for regular file inline data
  2026-07-27 · Yun Zhou <hidden>
• WARM2d [RFC PATCH 6/9] ext4: allocate block before destroying inline data in conversion
  2026-07-27 · Yun Zhou <hidden>
• WARM2d [RFC PATCH 1/9] ext4: add deprecation warning for inline_data feature
  2026-07-27 · Yun Zhou <hidden>
• WARM2d [RFC PATCH 9/9] ext4: populate extent entry atomically during inline data destroy
  2026-07-27 · Yun Zhou <hidden>
• WARM2d [RFC PATCH 5/9] ext4: remove dead inline data write code
  2026-07-27 · Yun Zhou <hidden>
• WARM2d [RFC PATCH 3/9] ext4: use safe convert path for inline data write overflow
  2026-07-27 · Yun Zhou <hidden>
• WARM2d [RFC PATCH 4/9] ext4: remove inline data write paths for regular files
  2026-07-27 · Yun Zhou <hidden>
• WARM2d [PATCH 1/1] ext4: fix incorrect function call when initializing s_resgid
  2026-07-27 · Jiazi Liu <hidden>
• DORMANTno replies Re: Linux 6.12.98
  2026-07-25 · Greg Kroah-Hartman <gregkh@linuxfoundation.org>
• HOTtoday [PATCH] ext4: Reduce object size of ext4_msg uses
  2026-07-25 · Joe Perches <joe@perches.com>
• DORMANTno replies Re: Linux 6.18.40
  2026-07-24 · Greg Kroah-Hartman <gregkh@linuxfoundation.org>
• DORMANTno replies Re: Linux 6.12.97
  2026-07-24 · Greg Kroah-Hartman <gregkh@linuxfoundation.org>
• COOLING7d Re: Linux 6.6.145
  2026-07-24 · Greg Kroah-Hartman <gregkh@linuxfoundation.org>
• DORMANTno replies Re: Linux 6.1.178
  2026-07-24 · Greg Kroah-Hartman <gregkh@linuxfoundation.org>
• DORMANTno replies Re: Linux 5.10.261
  2026-07-24 · Greg Kroah-Hartman <gregkh@linuxfoundation.org>
• DORMANTno replies Re: Linux 5.15.212
  2026-07-24 · Greg Kroah-Hartman <gregkh@linuxfoundation.org>
• WARM3d [PATCH v5] ext4: validate EA inode i_nlink in ext4_xattr_inode_iget
  2026-07-24 · Yun Zhou <hidden>
• WARM3d [PATCH] ext4: do not WARN when starting a journal on a frozen filesystem
  2026-07-23 · Luyao Bai <hidden>
• WARM1d [PATCH] ext4: turn off DAX on new files when encryption is set
  2026-07-23 · Ojaswin Mujoo <ojaswin@linux.ibm.com>
• COOLING9d Re: [PATCH] ext4: cache full extents during mapping lookup
  2026-07-22 · changfengnan <hidden>
• COOLING8d [RFC PATCH v3 1/2] ext4: fast commit: track disjoint modified ranges per inode
  2026-07-22 · Daejun Park <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.

• STALE134d REVIEWED: 10 (10M) [PATCH v4 8/8] ext4: Allow zeroout when doing written to unwritten split
  2026-01-23 · Ojaswin Mujoo <ojaswin@linux.ibm.com> · 2 Reviewed-by
• STALE134d REVIEWED: 10 (10M) [PATCH v4 7/8] ext4: Refactor split and convert extents
  2026-01-23 · Ojaswin Mujoo <ojaswin@linux.ibm.com> · 2 Reviewed-by
• STALE127d REVIEWED: 1 (0M) [PATCH] ext4: convert inline data to extents when truncate exceeds inline size
  2026-02-07 · Deepanshu Kartikey <hidden> · 1 Tested-by
• STALE123d REVIEWED: 1 (0M) [PATCH] ext4: add bounds check in ext4_xattr_ibody_get() to prevent out-of-bounds access
  2026-02-24 · Deepanshu Kartikey <hidden> · 1 Tested-by
• STALE112d REVIEWED: 1 (0M) [PATCH v4] ext4: simplify mballoc preallocation size rounding for small files
  2026-02-25 · Weixie Cui <hidden> · 1 Reviewed-by
• STALE126d REVIEWED: 2 (0M) [PATCH] ext4: avoid infinite loops caused by data conflicts
  2026-03-01 · Edward Adam Davis <hidden> · 2 Tested-by
• STALE126d REVIEWED: 2 (0M) [PATCH v2] ext4: avoid infinite loops caused by data conflicts
  2026-03-02 · Edward Adam Davis <hidden> · 2 Tested-by
• STALE137d REVIEWED: 9 (9M) [PATCH v3 09/12] ext4: widen trace event i_ino fields to u64
  2026-03-04 · Jeff Layton <jlayton@kernel.org> · 1 Reviewed-by
• STALE126d REVIEWED: 2 (0M) [PATCH v3] ext4: avoid infinite loops caused by residual data
  2026-03-05 · Edward Adam Davis <hidden> · 2 Tested-by
• STALE126d REVIEWED: 2 (0M) [PATCH v4] ext4: avoid infinite loops caused by residual data
  2026-03-05 · 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.

• STALE200d [PATCH 2/7] ext4: kunit tests for higher level extent manipulation functions
  2026-01-04 · Ojaswin Mujoo <ojaswin@linux.ibm.com>
• STALE200d [PATCH 1/7] ext4: kunit tests for extent splitting and conversion
  2026-01-04 · Ojaswin Mujoo <ojaswin@linux.ibm.com>
• DORMANTno replies Re: Linux 6.12.64
  2026-01-08 · Greg Kroah-Hartman <gregkh@linuxfoundation.org>
• DORMANTno replies Re: Linux 6.1.160
  2026-01-11 · Greg Kroah-Hartman <gregkh@linuxfoundation.org>
• STALE201d Re: Linux 6.6.120
  2026-01-11 · Greg Kroah-Hartman <gregkh@linuxfoundation.org>
• STALE199d [PATCH V6 3/9] ext4: specify the free pointer offset for ext4_inode_cache
  2026-01-13 · Harry Yoo <hidden>
• DORMANTno replies Re: Linux 6.1.161
  2026-01-17 · Greg Kroah-Hartman <gregkh@linuxfoundation.org>
• DORMANTno replies Re: Linux 5.15.198
  2026-01-19 · Greg Kroah-Hartman <gregkh@linuxfoundation.org>
• DORMANTno replies Re: Linux 5.10.248
  2026-01-19 · Greg Kroah-Hartman <gregkh@linuxfoundation.org>
• STALE192d [PATCH 08/12] mm: update all remaining mmap_prepare users to use vma_flags_t
  2026-01-19 · Lorenzo Stoakes <hidden>