linux-kernel - [PATCH 0/3] bcachefs: Fix some hard link count issues

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Message-ID: <20250926022150.493115-1-youling.tang@linux.dev>
Date: Fri, 26 Sep 2025 10:21:47 +0800
From: Youling Tang <youling.tang@...ux.dev>
To: Kent Overstreet <kent.overstreet@...ux.dev>
Cc: linux-bcachefs@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	youling.tang@...ux.dev,
	Youling Tang <tangyouling@...inos.cn>
Subject: [PATCH 0/3] bcachefs: Fix some hard link count issues

From: Youling Tang <tangyouling@...inos.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