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fuchsia / third_party / f2fs / 5ef37bfb381bfbda0d3666f61467306cb6dfe992
commit5ef37bfb381bfbda0d3666f61467306cb6dfe992[log] [tgz]
authorSeokhwan Kim <sukka.kim@samsung.com>Sat Jul 31 05:01:38 2021 +0900
committerBrett Wilson <brettw@google.com>Fri Jul 30 21:09:54 2021 +0000
tree90d9307cd730aa149f25a277d368e603648c3429
parentdf345be41b6baea8ab141464371bd01a6ffa2bc4 [diff]
[f2fs] Correct syncing node blocks

It modifies NodeMgr::SyncInodePage() to mark vnodes as dirty
instead of writting out them. NodeMgr::SyncInodePage() is
to synchronize in-memory vnode page and vnode object. Currently,
we have vnode cache but not page cache, and thus it is enough to set
the vnode as dirty. It also corrects a bug in NodeMgr::NewNodePage()
that used hot node segments to log warm/cold node blocks.

Test: fx test f2fs-unittest f2fs-fs-tests f2fs-slow-fs-tests

Change-Id: Ibb22b47f080981769c7c3c123c2c4b906f822768
Reviewed-on: https://fuchsia-review.googlesource.com/c/third_party/f2fs/+/562941
Reviewed-by: Brett Wilson <brettw@google.com>
1 file changed
tree: 90d9307cd730aa149f25a277d368e603648c3429
  1. patches/
  2. test/
  3. test_files/
  4. third_party/
  5. tools/
  6. AUTHORS
  7. bcache.cc
  8. bcache.h
  9. BUILD.gn
  10. checkpoint.cc
  11. CONTRIBUTING.md
  12. data.cc
  13. dir.cc
  14. dir.h
  15. dir_hash.cc
  16. f2fs.cc
  17. f2fs.h
  18. f2fs_internal.h
  19. f2fs_layout.h
  20. f2fs_lib.h
  21. f2fs_types.h
  22. file.cc
  23. file.h
  24. fsck.cc
  25. fsck.h
  26. gc.cc
  27. inline.cc
  28. LICENSE
  29. mkfs.cc
  30. mkfs.h
  31. mount.cc
  32. mount.h
  33. namei.cc
  34. namestring.h
  35. node.cc
  36. node.h
  37. PATENTS
  38. README.md
  39. recovery.cc
  40. segment.cc
  41. segment.h
  42. super.cc
  43. vnode.cc
  44. vnode.h
  45. vnode_cache.cc
  46. vnode_cache.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
  • Fuchsia base code ; Thu May 20 07:25:45 2021 Yilong Li, 02c0dfff0fdb
  • 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
  • all fs-tests and large-fs-tests passed
  • Remarks
  • fsck (base: 7f35b548d4b)
  • support the ext-identify feature
  • support discard

4th release (July-30-2021)

  • Features: vnode cache, inline dentry
  • unit test coverage

5th release (August-27-2021)

  • Features: dentry cache
  • Landing
  • Linux compatibility test coverage

6th release (September-30-2021 ~)

  • Features: gc, node cache, pager support, mmap, wb, readahead, ... (as new fuchsia features coming)
  • stress test coverage
  • performance test

How to build

$ fx set core.x64 --with-base //bundles:tools --with-base //bundles:tests --with-base third_party/f2fs
(see third_party/f2fs/test_files/README.md for test)