NAME    [Toc]    [Back]

     vwaitforio - wait for all outstanding asynchronous writes

SYNOPSIS    [Toc]    [Back]

     #include <sys/types.h>
     #include <sys/vnode.h>

     int
     vwaitforio(struct vnode *vp, int slpflag, char  *wmesg,  int
slptimeo);

DESCRIPTION    [Toc]    [Back]

     The  vwaitforio()  call sleeps until all asynchronous writes
associated
     with the vnode vp finish.  This is used  by  functions  that
need to make
     sure that the writes they initiated have completed.

     The  vwaitforio()  call sleeps at priority PRIBIO + 1 .  The
slpflag,
     wmesg, and slptimeo arguments indicate flags to be passed to
tsleep(9).

     This function must be called at splbio(9).

     It  may be important to ensure that no other process submits
asynchronous
     writes while a process is waiting for  I/O  on  this  vnode.
Otherwise,
     vwaitforio() may never return.

RETURN VALUES    [Toc]    [Back]

     The   vwaitforio()  function  returns  0  on  success.   See
tsleep(9) for possible
 error returns.

SEE ALSO    [Toc]    [Back]

     tsleep(9), vnode(9)

OpenBSD     3.6                        February     26,      2001