vwaitforio man page on OpenBSD

vwaitforio man page on OpenBSD

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VWAITFORIO(9)		     OpenBSD Kernel Manual		 VWAITFORIO(9)

NAME
     vwaitforio - wait for all outstanding asynchronous writes

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

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

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

SEE ALSO
     tsleep(9), vnode(9)

OpenBSD 4.9			March 18, 2009			   OpenBSD 4.9

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