MirOS Manual: vref(9)

VREF(9)                       BSD Kernel Manual                        VREF(9)

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 the vnode specified by vp.

     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 uses a vnode (e.g. during the operation of
     some algorithm or to store in a data structure) should call vref().

SEE ALSO

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

AUTHORS

     This man page was originally written by Doug Rabson for FreeBSD.

MirOS BSD #10-current           July 24, 1996                                1

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