linux/include/linux/fs.h
Linus Torvalds c84d3e3130 Various ext4 updates for 7.3-rc1, including:
* Improve performance by allowing parallel DIO writes when we were
   previously being overly conservative when checking whether it was safe
   to avoid requiring an exclusive lock
 * Improve the performance of ext4_mb_prefetch() used by fallocate() by
   avoiding work when it is not needed
 * Remove the unnecessary custom end_io function ext4_end_buffer_io_sync()
 * Improve performance when performing an overwrite to an already uptodate folio
 * Clean up how we handle deallocating EA inodes to avoid a potential
   lock ordering issue when there is a failed mount while an EA inode is
   still being evicted.
 * Use str_plural() instead of a custom macro
 * Avoid soft lockups or RCU stalls if there are many busy buffers
   (caused by heavy I/O) while checkpointing
 * Use scoped NOFS when starting a handle in nojournal mode
 * Align fields in handle structure to optimize setting and getting
   the h_type and h_line_no fields
 * Fix documentation of the meta_bg block group layout
 * Bug fixes, including
    - Fix a potential out-of-bounds read in ext4_read_inline_dir()
    - Fix a potential deadlock when concurrent xattr operations are racing
      with each other when some of the xattrs are using the ea_inode feature.
    - Fix a spurious warning with data=journal that can be triggered when
      writeback races with remounting the file system read-only
    - Fix a potential deadlock when EXT4_IOC_MIGRATE races with a file system
      freeze operation
    - Make sure all in-flight direct I/O operations are complete before
      falling back to buffered I/O.
    - Handle IOCB_NOWAIT properly when performing a extending DAX write
    - Prevent potentially sleeping on a block allocation when
      IOCB_NOWAIT is set
    - Fix potential races when racing an inline data write with a page fault
    - Propagate errors when adding or removing extent ranges
      during a fast commit replay
    - Avoid trying to expand an inode's extra size when it is being
      evicted to avoid a number of corner case or deadlocks
    - Avoid spurious error when retrying inode extra size expansion
    - Fix corner cases where we underestimate the number of journal
      credits needed
    - Avoid hangs/crashes/WARNINGS caused by maliciously corrupted
      file systems
    - Don't issue spurious orphan clean message on RO file systems
    - Avoid leaving the file system in an inconsistent state after a
      crash when a WRITE_ZEROS in progress converting an unwritten
      extent to a written extent
    - Handle WRITE_ZEROS correctly when there are some partially dirtied
      regions in the page cache
    - Pass errors during zero-rage, truncate, or punch hole to the caller
      if ext4_get_block() fails
    - Wait for writeback to finish when triggered by zero-range or
      zero-range for those devices that require stable writes
    - If the reserved gid superblock field is set, set the reserved gid
      instead of the reserved uid
 -----BEGIN PGP SIGNATURE-----
 
 iQEzBAABCAAdFiEEK2m5VNv+CHkogTfJ8vlZVpUNgaMFAmqD4ikACgkQ8vlZVpUN
 gaO5wwf+I8AyUIsTJRUEHshfkcx+9TIEgIMy20haw641366rhP6h0dnkkypLjeVp
 QyuO3Npivm7C9SO/IOX/ljhI7IBfoJtjfSpItBXRL/7TsSHYiqzxnCSNMWSwTBqP
 wcfVqXHGZVMX2TIepqszrkp3sRFzsXTsT/pk5j78IVGgMAQ+T+LJP8EEB3SNEHuF
 nTtXoHO8Rf0RZALE1oc1ywsZz6gvyBst5lTZxhAagRojNV15gPkns+oBkiQ6usUP
 f8co5HXmscFOlqPvX1DK3oifKzXcD1DrQDJwIRULBnoj0Rhlx8zZbqm37uZ5ULoS
 56G3YdMSziCzg7m0xlPMhWe68Eoabg==
 =TbiH
 -----END PGP SIGNATURE-----

Merge tag 'ext4_for_linus-7.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4

Pull ext4 updates from Ted Ts'o:

 - Improve performance by allowing parallel DIO writes when we were
   previously being overly conservative when checking whether it was
   safe to avoid requiring an exclusive lock

 - Improve the performance of ext4_mb_prefetch() used by fallocate() by
   avoiding work when it is not needed

 - Remove the unnecessary custom end_io function
   ext4_end_buffer_io_sync()

 - Improve performance when performing an overwrite to an already
   uptodate folio

 - Clean up how we handle deallocating EA inodes to avoid a potential
   lock ordering issue when there is a failed mount while an EA inode is
   still being evicted

 - Use str_plural() instead of a custom macro

 - Avoid soft lockups or RCU stalls if there are many busy buffers
   (caused by heavy I/O) while checkpointing

 - Use scoped NOFS when starting a handle in nojournal mode

 - Align fields in handle structure to optimize setting and getting the
   h_type and h_line_no fields

 - Fix documentation of the meta_bg block group layout

 - Bug fixes:
    - Fix a potential out-of-bounds read in ext4_read_inline_dir()
    - Fix a potential deadlock when concurrent xattr operations are
      racing with each other when some of the xattrs are using the
      ea_inode feature
    - Fix a spurious warning with data=journal that can be triggered
      when writeback races with remounting the file system read-only
    - Fix a potential deadlock when EXT4_IOC_MIGRATE races with a file
      system freeze operation
    - Make sure all in-flight direct I/O operations are complete before
      falling back to buffered I/O
    - Handle IOCB_NOWAIT properly when performing a extending DAX write
    - Prevent potentially sleeping on a block allocation when
      IOCB_NOWAIT is set
    - Fix potential races when racing an inline data write with a page
      fault
    - Propagate errors when adding or removing extent ranges during a
      fast commit replay
    - Avoid trying to expand an inode's extra size when it is being
      evicted to avoid a number of corner case or deadlocks
    - Avoid spurious error when retrying inode extra size expansion
    - Fix corner cases where we underestimate the number of journal
      credits needed
    - Avoid hangs/crashes/WARNINGS caused by maliciously corrupted file
      systems
    - Don't issue spurious orphan clean message on RO file systems
    - Avoid leaving the file system in an inconsistent state after a
      crash when a WRITE_ZEROS in progress converting an unwritten
      extent to a written extent
    - Handle WRITE_ZEROS correctly when there are some partially dirtied
      regions in the page cache
    - Pass errors during zero-rage, truncate, or punch hole to the
      caller if ext4_get_block() fails
    - Wait for writeback to finish when triggered by zero-range or
      zero-range for those devices that require stable writes
    - If the reserved gid superblock field is set, set the reserved gid
      instead of the reserved uid

* tag 'ext4_for_linus-7.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4: (56 commits)
  ext4: fix estimate extent index blocks in ext4_ext_index_trans_blocks()
  ext4: fix transaction overflow during writeback
  ext4: teach ext4_meta_trans_blocks() about number of allocated extents
  ext4: guard against NULL s_group_info in ext4_get_group_info
  ext4: fix spurious message about orphan cleanup on RO fs
  ext4: stop retrying saturated xattr cache entries
  ext4: don't enable DAX on new encrypted files
  ext4: protect WRITE_ZEROES written extents with orphan list
  ext4: export converted block count from ext4_convert_unwritten_extents()
  ext4: fix incorrect function call when initializing s_resgid
  ext4: validate EA inode i_nlink in ext4_xattr_inode_iget
  jbd2: align h_type and h_line_no in the handle structure on byte boundaries
  ext4: enable scoped NOFS when starting a handle in nojournal mode
  ext4: write back partial-zeroed edges in WRITE_ZEROES
  ext4: zero out whole block for clean edges in WRITE_ZEROES
  ext4: track partial-zero outcome per edge in ext4_zero_partial_blocks()
  ext4: clarify return semantics of ext4_load_tail_bh()
  ext4: move partial block zeroing earlier in ext4_zero_range()
  ext4: check return value of ext4_get_block() in ext4_load_tail_bh()
  ext4: skip tail block zeroing for inline data files
  ...
2026-08-20 13:17:11 -07:00

3690 lines
120 KiB