Проект OpenNet: MAN vget (9) Ядро (FreeBSD и Linux)

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vget (9)

>> vget (9) ( FreeBSD man: Ядро )

BSD mandoc

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.

Fa vp: The vnode to remove from the free list.
Fa 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_LOOKUP9 then the new user must call vget ();
to increment the reference count and remove it from the free list.

AUTHORS

This manual page was written by An Doug Rabson .

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