linux/Documentation/filesystems
Linus Torvalds fbeea4db51 New features and improvements for the ext4 file system
* Optimize online defragmentation by using folios instead of individual
   buffer heads
 * Improve error codes stored in the superblock when the journal aborts
 * Minor cleanups and clarifications in ext4_map_blocks()
 * Add documentation of the casefold and encrypt flags
 * Add support for file systems with a blocksize greater than the pagesize
 * Improve performance by enabling the caching the fact that an inode does
   not have a Posix ACL.
 
 Various Bug Fixes
 
 * Fix false positive compliants from smatch
 * Fix error code which is returned by ext4fs_dirhash() when Siphash is
   used without the encryption key
 * Fix races when writing to inline data files which could trigger a BUG
 * Fix potential NULL dereference when there is an corrupt file system with
   an extended attribute value stored in a inode
 * Fix false positive lockdep report when syzbot uses ext4 and ocfs2 together
 * Fix false positive reported by DEPT by adjusting lock annotation
 * Avoid a potential BUG_ON in jbd2 when a file system is massively corrupted
 * Fix a WARN_ON when superblock is corrupted with a non-NULL terminated
   mount options field
 * Add check if the userspace passes in a non-NULL terminated mount options
   field to EXT4_IOC_SET_TUNE_SB_PARAM
 * Fix a potential journal checksum failure whena file system is copied while
   it is mounted read-only
 * Fix a potential potential orphan file tracking error which only showed
   on 32-bit systems
 * Fix assertion checks in mballoc (which have to be explicitly enbled by
   manually enabling AGGRESSIVE_CHECKS and recompiling)
 * Avoid complaining about overly large orphan files created by mke2fs with
   with file systems with a 64k block size
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Merge tag 'ext4_for_linus-6.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4

Pull ext4 updates from Ted Ts'o:
 "New features and improvements for the ext4 file system:
   - Optimize online defragmentation by using folios instead of
     individual buffer heads
   - Improve error codes stored in the superblock when the journal
     aborts
   - Minor cleanups and clarifications in ext4_map_blocks()
   - Add documentation of the casefold and encrypt flags
   - Add support for file systems with a blocksize greater than the
     pagesize
   - Improve performance by enabling the caching the fact that an inode
     does not have a Posix ACL

  Various Bug Fixes:
   - Fix false positive complaints from smatch
   - Fix error code which is returned by ext4fs_dirhash() when Siphash
     is used without the encryption key
   - Fix races when writing to inline data files which could trigger a
     BUG
   - Fix potential NULL dereference when there is an corrupt file system
     with an extended attribute value stored in a inode
   - Fix false positive lockdep report when syzbot uses ext4 and ocfs2
     together
   - Fix false positive reported by DEPT by adjusting lock annotation
   - Avoid a potential BUG_ON in jbd2 when a file system is massively
     corrupted
   - Fix a WARN_ON when superblock is corrupted with a non-NULL
     terminated mount options field
   - Add check if the userspace passes in a non-NULL terminated mount
     options field to EXT4_IOC_SET_TUNE_SB_PARAM
   - Fix a potential journal checksum failure whena file system is
     copied while it is mounted read-only
   - Fix a potential potential orphan file tracking error which only
     showed on 32-bit systems
   - Fix assertion checks in mballoc (which have to be explicitly enbled
     by manually enabling AGGRESSIVE_CHECKS and recompiling)
   - Avoid complaining about overly large orphan files created by mke2fs
     with with file systems with a 64k block size"

* tag 'ext4_for_linus-6.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4: (58 commits)
  ext4: mark inodes without acls in __ext4_iget()
  ext4: enable block size larger than page size
  ext4: add checks for large folio incompatibilities when BS > PS
  ext4: support verifying data from large folios with fs-verity
  ext4: make data=journal support large block size
  ext4: support large block size in __ext4_block_zero_page_range()
  ext4: support large block size in mpage_prepare_extent_to_map()
  ext4: support large block size in mpage_map_and_submit_buffers()
  ext4: support large block size in ext4_block_write_begin()
  ext4: support large block size in ext4_mpage_readpages()
  ext4: rename 'page' references to 'folio' in multi-block allocator
  ext4: prepare buddy cache inode for BS > PS with large folios
  ext4: support large block size in ext4_mb_init_cache()
  ext4: support large block size in ext4_mb_get_buddy_page_lock()
  ext4: support large block size in ext4_mb_load_buddy_gfp()
  ext4: add EXT4_LBLK_TO_PG and EXT4_PG_TO_LBLK for block/page conversion
  ext4: add EXT4_LBLK_TO_B macro for logical block to bytes conversion
  ext4: support large block size in ext4_readdir()
  ext4: support large block size in ext4_calculate_overhead()
  ext4: introduce s_min_folio_order for future BS > PS support
  ...
2025-12-03 20:37:15 -08:00
..
caching doc: correcting the debug path for cachefiles 2024-10-24 13:50:27 +02:00
ext4 Documentation: ext4: Document casefold and encrypt flags 2025-11-26 17:13:34 -05:00
fuse Documentation: fuse: Consolidate FUSE docs into its own subdirectory 2025-08-27 14:29:43 +02:00
gfs2 Documentation: gfs2: Consolidate GFS2 docs into its own subdirectory 2025-10-31 21:00:43 +00:00
iomap fs, iomap: remove IOCB_DIO_CALLER_COMP 2025-11-25 10:22:18 +01:00
nfs nfsd: disallow file locking and delegations for NFSv4 reexport 2025-03-10 09:11:08 -04:00
smb cifs: add documentation for smbdirect setup 2025-06-05 10:20:48 -05:00
spufs
xfs xfs: new code for v6.19 2025-12-03 20:19:38 -08:00
9p.rst 9p update for 6.15-rc1 2025-04-03 15:35:46 -07:00
adfs.rst
affs.rst
afs.rst
api-summary.rst
autofs-mount-control.rst
autofs.rst Documentation: filesystems: update filename extensions 2024-11-22 10:31:04 -07:00
automount-support.rst
befs.rst
bfs.rst
btrfs.rst
buffer.rst
ceph.rst
coda.rst documentation/filesystems: fix spelling mistakes 2025-02-10 10:42:28 -07:00
configfs.rst
cramfs.rst
dax.rst doc: Remove misleading reference to brd in dax.rst 2025-06-25 12:49:29 -06:00
debugfs.rst docs: debugfs: do not recommend debugfs_remove_recursive 2025-04-30 19:11:04 +02:00
devpts.rst
directory-locking.rst
dlmfs.rst Documentation: filesystems: update filename extensions 2024-11-22 10:31:04 -07:00
dnotify.rst
ecryptfs.rst
efivarfs.rst
erofs.rst Documentation: Fix filesystems typos 2025-08-18 10:31:19 -06:00
ext2.rst
ext3.rst
f2fs.rst Documentation: f2fs: Reword title 2025-08-28 00:09:02 +00:00
fiemap.rst fiemap: use kernel-doc includes in fiemap docbook 2024-12-22 11:29:50 +01:00
files.rst
fscrypt.rst fscrypt: Drop obsolete recommendation to enable optimized POLYVAL 2025-11-11 11:03:39 -08:00
fsverity.rst fsverity: Switch from crypto_shash to SHA-2 library 2025-07-14 11:29:32 -07:00
hfs.rst
hfsplus.rst
hpfs.rst Documentation: Fix filesystems typos 2025-08-18 10:31:19 -06:00
idmappings.rst doc: correcting two prefix errors in idmappings.rst 2025-03-05 11:54:18 +01:00
index.rst Documentation: gfs2: Consolidate GFS2 docs into its own subdirectory 2025-10-31 21:00:43 +00:00
inotify.rst
isofs.rst
journalling.rst jbd2: remove unused transaction->t_private_list 2025-02-10 07:48:24 -05:00
locking.rst block: switch ->getgeo() to struct gendisk 2025-08-13 02:59:29 -04:00
locks.rst
mount_api.rst change the calling conventions for vfs_parse_fs_string() 2025-09-04 15:20:51 -04:00
multigrain-ts.rst Documentation: add a new file documenting multigrain timestamps 2024-10-10 10:20:52 +02:00
netfs_library.rst fs/netfs: remove unused flag NETFS_SREQ_SEEK_DATA_READ 2025-05-21 14:34:37 +02:00
nilfs2.rst
ntfs3.rst
ocfs2-online-filecheck.rst Documentation: ocfs2: Properly reindent filecheck operations list 2025-08-29 15:50:50 -06:00
ocfs2.rst
omfs.rst
orangefs.rst
overlayfs.rst overlayfs.rst: fix typos 2025-07-15 13:53:46 -06:00
path-lookup.rst Documentation: filesystems: update filename extensions 2024-11-22 10:31:04 -07:00
path-lookup.txt Documentation: filesystems: update filename extensions 2024-11-22 10:31:04 -07:00
porting.rst vfs-6.19-rc1.directory.locking 2025-12-01 16:13:46 -08:00
proc.rst VFIO updates for v6.18-rc1 2025-10-04 08:24:54 -07:00
propagate_umount.txt docs: fix trailing whitespace error and remove repeated words in propagate_umount.txt 2025-08-21 12:49:01 -06:00
qnx6.rst
quota.rst
ramfs-rootfs-initramfs.rst docs: replace broken links in ramfs-rootfs-initramfs docs 2025-10-29 16:19:26 -06:00
relay.rst - The 3 patch series "hung_task: extend blocking task stacktrace dump to 2025-05-31 19:12:53 -07:00
resctrl.rst fs/resctrl: Update bit_usage to reflect io_alloc 2025-11-22 14:30:34 +01:00
romfs.rst
seq_file.rst
sharedsubtree.rst Documentation: sharedsubtree: Convert notes to note directive 2025-08-29 16:40:01 -06:00
splice.rst
squashfs.rst Documentation: update the Squashfs filesystem documentation 2025-01-24 22:47:21 -08:00
sysfs.rst It has been a relatively busy cycle in docsland, with changes all over: 2025-10-03 17:16:13 -07:00
tmpfs.rst docs: tmpfs: Add casefold options 2024-10-28 13:36:55 +01:00
ubifs-authentication.rst Documentation: treewide: Replace remaining spinics links with lore 2025-06-21 14:20:51 -06:00
ubifs.rst
udf.rst
vfat.rst
vfs.rst vfs-6.18-rc1.mount 2025-09-29 09:32:34 -07:00
virtiofs.rst
zonefs.rst