suse man page for drop_nlink

DROP_NLINK(9)							   The Linux VFS						     DROP_NLINK(9)

NAME
       drop_nlink - directly drop an inode's link count

SYNOPSIS
       void drop_nlink(struct inode * inode);

ARGUMENTS
       inode
	   inode

DESCRIPTION
       This is a low-level filesystem helper to replace any direct filesystem manipulation of i_nlink. In cases where we are attempting to track
       writes to the filesystem, a decrement to zero means an imminent write when the file is truncated and actually unlinked on the filesystem.

COPYRIGHT
Kernel Hackers Manual 2.6.					     July 2010							     DROP_NLINK(9)