[v6,0/3] shmemfs stable directory offsets

Message

Chuck Lever June 28, 2023, 3:25 p.m. UTC

The following series implements stable directory offsets for
shmemfs/tmpfs and provides infrastructure for use by other file
systems that are based on simplefs.


Changes since v5:
- Rename functions and structures

Changes since v4:
- Remove new fields from struct inode/dentry
- Remove EXPORT_SYMBOL and extern for new functions
- Try again to fix error handling for rename_exchange

Changes since v3:
- Rebased on v6.4
- Fixed error handling bugs

Changes since v2:
- Move bulk of stable offset support into fs/libfs.c
- Replace xa_find_after with xas_find_next for efficiency

Changes since v1:
- Break the single patch up into a series

Changes since RFC:
- Destroy xarray in shmem_destroy_inode() instead of free_in_core_inode()
- A few cosmetic updates

---

Chuck Lever (3):
      libfs: Add directory operations for stable offsets
      shmem: Refactor shmem_symlink()
      shmem: stable directory offsets


 fs/libfs.c               | 247 +++++++++++++++++++++++++++++++++++++++
 include/linux/fs.h       |  18 +++
 include/linux/shmem_fs.h |   1 +
 mm/shmem.c               |  62 +++++++---
 4 files changed, 313 insertions(+), 15 deletions(-)

--
Chuck Lever