Merge tag 'f2fs-for-6.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs

Pull f2fs updates from Jaegeuk Kim:
 "This focuses on two primary updates for Android devices.

  First, it sets hash-based file name lookup as the default method to
  improve performance, while retaining an option to fall back to a
  linear lookup.

  Second, it resolves a persistent issue with the 'checkpoint=enable'
  feature.

  The update further boosts performance by prefetching node blocks,
  merging FUA writes more efficiently, and optimizing block allocation
  policies.

  The release is rounded out by a comprehensive set of bug fixes that
  address memory safety, data integrity, and potential system hangs,
  along with minor documentation and code clean-ups.

  Enhancements:
   - add mount option and sysfs entry to tune the lookup mode
   - dump more information and add a timeout when enabling/disabling
     checkpoints
   - readahead node blocks in F2FS_GET_BLOCK_PRECACHE mode
   - merge FUA command with the existing writes
   - allocate HOT_DATA for IPU writes
   - Use allocate_section_policy to control write priority in
     multi-devices setups
   - add reserved nodes for privileged users
   - Add bggc_io_aware to adjust the priority of BG_GC when issuing IO
   - show the list of donation files

  Bug fixes:
   - add missing dput() when printing the donation list
   - fix UAF issue in f2fs_merge_page_bio()
   - add sanity check on ei.len in __update_extent_tree_range()
   - fix infinite loop in __insert_extent_tree()
   - fix zero-sized extent for precache extents
   - fix to mitigate overhead of f2fs_zero_post_eof_page()
   - fix to avoid migrating empty section
   - fix to truncate first page in error path of f2fs_truncate()
   - fix to update map->m_next_extent correctly in f2fs_map_blocks()
   - fix wrong layout information on 16KB page
   - fix to do sanity check on node footer for non inode dnode
   - fix to avoid NULL pointer dereference in
     f2fs_check_quota_consistency()
   - fix to detect potential corrupted nid in free_nid_list
   - fix to clear unusable_cap for checkpoint=enable
   - fix to zero data after EOF for compressed file correctly
   - fix to avoid overflow while left shift operation
   - fix condition in __allow_reserved_blocks()"

* tag 'f2fs-for-6.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs: (43 commits)
  f2fs: add missing dput() when printing the donation list
  f2fs: fix UAF issue in f2fs_merge_page_bio()
  f2fs: readahead node blocks in F2FS_GET_BLOCK_PRECACHE mode
  f2fs: add sanity check on ei.len in __update_extent_tree_range()
  f2fs: fix infinite loop in __insert_extent_tree()
  f2fs: fix zero-sized extent for precache extents
  f2fs: fix to mitigate overhead of f2fs_zero_post_eof_page()
  f2fs: fix to avoid migrating empty section
  f2fs: fix to truncate first page in error path of f2fs_truncate()
  f2fs: fix to update map->m_next_extent correctly in f2fs_map_blocks()
  f2fs: fix wrong layout information on 16KB page
  f2fs: clean up error handing of f2fs_submit_page_read()
  f2fs: avoid unnecessary folio_clear_uptodate() for cleanup
  f2fs: merge FUA command with the existing writes
  f2fs: allocate HOT_DATA for IPU writes
  f2fs: Use allocate_section_policy to control write priority in multi-devices setups
  Documentation: f2fs: Reword title
  Documentation: f2fs: Indent compression_mode option list
  Documentation: f2fs: Wrap snippets in literal code blocks
  Documentation: f2fs: Span write hint table section rows
  ...

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