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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 (.);
     

    SEE ALSO

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

    AUTHORS

    This manual page was written by An Doug Rabson .


     

    Index

    NAME
    SYNOPSIS
    DESCRIPTION
    SEE ALSO
    AUTHORS


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