Skip site navigation (1)Skip section navigation (2)

FreeBSD Man Pages

Man Page or Keyword Search:
Man Architecture
Apropos Keyword Search (all sections) Output format
home | help
VREF(9)		       FreeBSD Kernel Developer's Manual	       VREF(9)

NAME
     vref -- increment the use count for a vnode

SYNOPSIS
     #include <sys/param.h>
     #include <sys/vnode.h>

     void
     vref(struct vnode *vp);

DESCRIPTION
     Increment the v_usecount field of a vnode.

     vp	 the vnode to increment

     Each vnode	maintains a reference count of how many	parts of the system
     are using the vnode.  This	allows the system to detect when a vnode is no
     longer being used and can be safely recycled for a	different file.

     Any code in the system which is using a vnode (e.g. during	the operation
     of	some algorithm or to store in a	data structure)	should call vref().

SEE ALSO
     vget(9), vnode(9),	vput(9), vrefcnt(9), vrele(9)

AUTHORS
     This manual page was written by Doug Rabson.

FreeBSD	9.3			 July 24, 1996			   FreeBSD 9.3

NAME | SYNOPSIS | DESCRIPTION | SEE ALSO | AUTHORS

Want to link to this manual page? Use this URL:
<http://www.freebsd.org/cgi/man.cgi?query=vref&sektion=9&manpath=FreeBSD+9.3-RELEASE>

home | help