vref - increment the use count for a vnode

CONTENTS

Synopsis
Description
See Also
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.In sys/param.h
.In sys/vnode.h void vref struct vnode *vp

Increment the v_usecount field of a vnode.

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.

vget(9), vnode(9), vput(9), vrele(9)

This manual page was written by
.An Doug Rabson .

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