From: Youling Tang <tangyouling@kylinos.cn>

- Improves error reporting by returning the semantically correct
  -EMLINK error code.
- Fixes the maximum link count validation logic during hard link
  creation.
- Consolidates link count checks at the VFS layer for better
  maintainability.

NOTE: Patch3 alone can resolve this series of issues, but patches1-2
are retained to better trace the problem origins.

Youling Tang (3):
  bcachefs: return -EMLINK instead of -EINVAL when hard link count
    exceeds limit
  bcachefs: Fix maximum link count check when creating hard links
  bcachefs: Move the link counting check to the VFS layer

 fs/bcachefs/bcachefs.h |  1 +
 fs/bcachefs/fs.c       |  1 +
 fs/bcachefs/inode.c    | 10 ++--------
 fs/bcachefs/inode.h    |  2 +-
 fs/bcachefs/namei.c    |  4 +---
 5 files changed, 6 insertions(+), 12 deletions(-)

-- 
2.43.0