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
AUTHORS
This manual page was written by Doug Rabson.