A small minor release, driven by features proposed by@sosthene-nitrokey and@yamt, with bug fixes from@DvdGiessen,@selimkeles, and yours truly.

What's new?

• Thanks to@sosthene-nitrokey,lfs_fs_grow now supports alimited form of filesystem shrinking (#1094)

  If compiled withLFS_SHRINKNONRELOCATING,lfs_fs_grow can be used to reduce theblock_count, as long is it does not require block relocation. This provides a useful path for migrating from old filesystem images created when littlefs ignored the on-diskblock_count.

  Note that this is unreliable for general use. littlefs allocates blocks pseudorandomly as a part of wear-leveling, soLFS_SHRINKNONRELOCATING is unlikely to succeed even with small filesystems.

• Thanks to@yamt,make test should now work on Mac out of the box. This required linker and Makefile changes due to littlefs's test-runner quirks (#1090,#1091)

  As a side-effect, littlefs's Makefile can now compile with Clang. The only limitation being that stack measurements are currently broken. If anyone knows a good Clang alternative to GCC's-fcallgraph-info=su, feel free to create an issue (or PR if you're willing to write a bit of python).

  littlefs's Makefile can also compile with other non-Clang non-GCC compilers if you set theNO_GCC environment variable.

• @DvdGiessen fixed several bugs related to LFS_CRC (1095)

  • User provided LFS_CRCs no longer create multiple definitions iflfs_util.h is included in more than one file.
  • LFS_CRC no longer needs a trailing semicolon.

• Thanks to@selimkeles,lfs_fromle32/lfs_frombe32 no longer risk overflow on 16-bit devices (#1100)

• Found by@Hugh-Baoa, fixed a double deorphan that can occur if an mdir relocates during a remove operation (#1099)

• Thanks to@DvdGiessen,changeprefix.py no longer breaks if /tmp lives on a different filesystem (#1104)

Changes

8434536 Bumped minor version to v2.11
ba250a3 use shutil.move instead of os.rename to move file
0115cf6 gha: Dropped explicit CFLAGS from clang testing in CI
bff4dfd Added NO_GCC to allow users to explicitly disable GCC-specific flags
edaaaf8 Apply review comments
7d79423 Rename SHRINKIFCHEAP to SHRINKNONRELOCATING
7782d3d Mention that shrinking is unlikely to work
f4a1bb3 fix: added uint32_t cast to the bitshift places In 16 bit and 8 bit architectures, overflow and underflow issues were occuring while using functions lfs_frombe32 and lfs_fromle32
9b8f802 fixup! Add support for shrinking a filesystem
a3d6bec Fixed a double deorphan caused by relocation mid dir remove
0634d13 tests: Added non-reentrant variants of orphan/relocation tests
2105e50 Add support for shrinking a filesystem
b823728 lfs_crc should be static if LFS_CRC is defined
0d861b7 adapt the linker sections usage to mach-o
26bee8a drop a few unsupported CFLAGS for clang

Sponsors

A special thanks to littlefs's sponsors:@micropython,@fusedFET

Contributors