[f2fs] code refactoring: Remove goto in GrabMetaPage (checkpoint.cc)

(comment: #16 https://fuchsia-review.googlesource.com/c/third_party/f2fs/+/520885)

Change-Id: I46fe1293fc33253b9a9d4ce7d06dbbadc0650a50
Reviewed-on: https://fuchsia-review.googlesource.com/c/third_party/f2fs/+/530802
Reviewed-by: Brett Wilson <brettw@google.com>
1 file changed
tree: f4a35f2f55c073b6d0a59b9b1329eedbb9b3c9a6
  1. test_files/
  2. third_party/
  3. tools/
  4. AUTHORS
  5. bcache.cc
  6. bcache.h
  7. BUILD.gn
  8. checkpoint.cc
  9. CONTRIBUTING.md
  10. data.cc
  11. dir.cc
  12. dir.h
  13. dir_hash.cc
  14. f2fs.cc
  15. f2fs.h
  16. f2fs_internal.h
  17. f2fs_layout.h
  18. f2fs_lib.h
  19. f2fs_types.h
  20. file.cc
  21. file.h
  22. LICENSE
  23. mkfs.cc
  24. mkfs.h
  25. namei.cc
  26. node.cc
  27. node.h
  28. PATENTS
  29. README.md
  30. recovery.cc
  31. segment.cc
  32. segment.h
  33. super.cc
  34. vnode.cc
  35. vnode.h
README.md

What is F2FS?

F2FS is the most commonly used log-structured file system in Linux. It supports flash-friendly features such as adaptive logging, multi-head logging, fsync acceleration, and node address translation. For more information see: https://www.usenix.org/conference/fast15/technical-sessions/presentation/lee

Major Release

1st release (Apr-06-2021)

  • Features: mkfs, mount/umount, read, write, rmdir, mkdir, rename, fsync, lseek, link, unlink
  • Remarks
  • Fuchsia base code ; Thu Mar 11 08:53:24 2021 Prashanth Swaminathan,76a08ad1474 [speak] Migrate to new component templates
  • There is no cache. Every request is handled as a synchronous operation.
  • fsync() triggers checkpointing
  • lock granularity: file operation
  • LFS is used for block allocation by default, and IPU is forced when the number of free sections is below 50%.
  • no background/foreground gc
  • disable the roll-forward recovery
  • 6 active logs
  • disable the ext-identify feature
  • block allocation: LFS, IPU
  • fsck do nothing, but it returns true
  • no discard

2nd release (May-28-2021)

  • Features: truncate, ssr, fsync, recovery
  • Remarks
  • support the roll-forward recovery and file level fsync()
  • block allocation: LFS, IPU, SSR
  • truncate

3rd release (June-25-2021)

  • Features: fsck, mount option, mkfs option
  • Remarts
  • fsck (base: bbf6e62)
  • support the ext-identify feature
  • support discard

4th release (July-30-2021 ~)

  • Testability
  • Features: buffered IO, gc (if writable PagedVfs is available)
  • Remarks
  • background/foreground gc
  • caching node/meta blocks
  • read ahead
  • Page level locking
  • buffered IO
  • mmap
  • IPU can be disabled.
  • support fvm
  • xattr

How to build

$ fx set bringup.x64 --with //bundles:tools --with-base //bundles/buildbot:bringup --with-base third_party/f2fs --with-base third_party/f2fs/tools:f2fs-tools $ fx build $ fx emu -N --headless -hda third_party/f2fs/test_files/blk{500m or 1g}.bin (see third_party/f2fs/test_files/README.md for test)