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Changes since last update:

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- support direct I/O for all uncompressed files;
 
  - support fsdax for non-tailpacking regular files;
 
  - use iomap infrastructure for all uncompressed cases;
 
  - support fiemap for both (un)compressed files;
 
  - introduce chunk-based files for chunk deduplication.
 
  - some cleanups.
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Merge tag 'erofs-for-5.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/xiang/erofs

Pull erofs updates from Gao Xiang:
 "In this cycle, direct I/O and fsdax support for uncompressed files are
  now added in order to avoid double-caching for loop device and VM
  container use cases. All uncompressed cases are now turned into iomap
  infrastructure, which looks much simpler and cleaner.

  In addition, fiemap support is added for both (un)compressed files by
  using iomap infrastructure as well so end users can easily get file
  distribution. We've also added chunk-based uncompressed files support
  for data deduplication as the next step of VM container use cases.

  Summary:

   - support direct I/O for all uncompressed files

   - support fsdax for non-tailpacking regular files

   - use iomap infrastructure for all uncompressed cases

   - support fiemap for both (un)compressed files

   - introduce chunk-based files for chunk deduplication

   - some cleanups"

* tag 'erofs-for-5.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/xiang/erofs:
  erofs: fix double free of 'copied'
  erofs: support reading chunk-based uncompressed files
  erofs: introduce chunk-based file on-disk format
  erofs: add fiemap support with iomap
  erofs: add support for the full decompressed length
  erofs: remove the mapping parameter from erofs_try_to_free_cached_page()
  erofs: directly use wrapper erofs_page_is_managed() when shrinking
  erofs: convert all uncompressed cases to iomap
  erofs: dax support for non-tailpacking regular file
  erofs: iomap support for non-tailpacking DIO
This commit is contained in:
Linus Torvalds 2021-09-02 09:12:05 -07:00
commit 412106c203
10 changed files with 517 additions and 217 deletions
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