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Command: vget | Section: 9 | Source: FreeBSD | File: vget.9.gz
VGET(9) FreeBSD Kernel Developer's Manual 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 reference 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.
FreeBSD 14.1-RELEASE-p8 July 24, 1996 FreeBSD 14.1-RELEASE-p8