vget(9)

NAME

vget - get a vnode from the free list

SYNOPSIS

#include <sys/param.h>
#include <sys/vnode.h>
int
vget(struct vnode *vp, int lockflag, struct thread *td);

DESCRIPTION

Get a vnode from the free list and increment its reference

count.

vp The vnode to remove from the free list.

lockflag If non-zero, the vnode will also be locked.

When not in use, vnodes are kept on a free list. The vnodes

still reference valid files but may be reused to refer to a new file at

any time.
Often, these vnodes are also held in caches in the system,

such as the
name cache.

When a vnode which is on the free list is used again, for

instance if the
vnode was found in the name cache as a result of a call to

VOP_LOOKUP(9)
then the new user must call vget() to increment the refer

ence count and
remove it from the free list.

SEE ALSO

vnode(9), vput(9), vref(9), vrele(9)

AUTHORS

This manual page was written by Doug Rabson.

BSD July 24, 1996

BSD