$OpenBSD: vwakeup.9,v 1.5 2013/08/14 06:32:33 jmc Exp $
Written by Jared Yanovich
This file belongs to the public domain.
.Dd $Mdocdate: June 4 2013 $ .Dt VWAKEUP 9 .Os .Sh NAME .Nm vwakeup .Nd update outstanding I/O count and do wakeup on a vnode .Sh SYNOPSIS n sys/param.h n sys/vnode.h .Ft void .Fn vwakeup "struct vnode *vp" .Sh DESCRIPTION The .Fn vwakeup function updates the number of outstanding I/O operations on the target vnode, stored in its .Va v_numoutput field. If the target vnode has the .Dv VBIOWAIT flag set in its .Va v_bioflag field and has no outstanding I/O operations remaining, a .Xr wakeup 9 is performed as well.
Written by Jared Yanovich
This file belongs to the public domain.
.Dd $Mdocdate: June 4 2013 $ .Dt VWAKEUP 9 .Os .Sh NAME .Nm vwakeup .Nd update outstanding I/O count and do wakeup on a vnode .Sh SYNOPSIS n sys/param.h n sys/vnode.h .Ft void .Fn vwakeup "struct vnode *vp" .Sh DESCRIPTION The .Fn vwakeup function updates the number of outstanding I/O operations on the target vnode, stored in its .Va v_numoutput field. If the target vnode has the .Dv VBIOWAIT flag set in its .Va v_bioflag field and has no outstanding I/O operations remaining, a .Xr wakeup 9 is performed as well.
p The .Fn vwakeup function must be called at .Xr splbio 9 . .Sh SEE ALSO .Xr panic 9 , .Xr splbio 9 , .Xr vnode 9 , .Xr vwaitforio 9 , .Xr wakeup 9 .Sh HISTORY This document first appeared in .Ox 3.7 . .Sh CAVEATS Calling .Fn vwakeup more times than the number of outstanding I/O operations will cause the system to .Xr panic 9 .