filesystems: add set_nlink()

Replace remaining direct i_nlink updates with a new set_nlink()
updater function.

Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
Tested-by: Toshiyuki Okajima <toshi.okajima@jp.fujitsu.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>

1 files changed, 13 insertions, 0 deletions

diff --git a/include/linux/fs.h b/include/linux/fs.h
index 7a049fd2aa4c..48c1f5fc7411 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -1755,6 +1755,19 @@ static inline void mark_inode_dirty_sync(struct inode *inode)
 }
 
 /**
+ * set_nlink - directly set an inode's link count
+ * @inode: inode
+ * @nlink: new nlink (should be non-zero)
+ *
+ * This is a low-level filesystem helper to replace any
+ * direct filesystem manipulation of i_nlink.
+ */
+static inline void set_nlink(struct inode *inode, unsigned int nlink)
+{
+        inode->i_nlink = nlink;
+}
+
+/**
  * inc_nlink - directly increment an inode's link count
  * @inode: inode
  *