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

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vref (9)

>> vref (9) ( FreeBSD man: Ядро )

BSD mandoc

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.

Fa 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 (.);

AUTHORS

This manual page was written by An Doug Rabson .

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