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Pass DIOCCACHESYNC ioctl down to the underlying disk. 

Addresses PR 41016.
This commit is contained in:
apb 2009-03-14 17:56:47 +00:00
parent 1bb89ee28f
commit caccc8126b
1 changed files with 17 additions and 2 deletions
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19
sys/dev/cgd.c
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@ -1,4 +1,4 @@
/* $NetBSD: cgd.c,v 1.56 2009/01/11 09:51:38 cegger Exp $ */
/* $NetBSD: cgd.c,v 1.57 2009/03/14 17:56:47 apb Exp $ */
/*-
* Copyright (c) 2002 The NetBSD Foundation, Inc.
@ -30,7 +30,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: cgd.c,v 1.56 2009/01/11 09:51:38 cegger Exp $");
__KERNEL_RCSID(0, "$NetBSD: cgd.c,v 1.57 2009/03/14 17:56:47 apb Exp $");
#include <sys/types.h>
#include <sys/param.h>
@ -462,6 +462,21 @@ cgdioctl(dev_t dev, u_long cmd, void *data, int flag, struct lwp *l)
}
ret = cgd_ioctl_clr(cs, data, l);
break;
case DIOCCACHESYNC:
/*
* XXX Do we really need to care about having a writable
* file descriptor here?
*/
if ((flag & FWRITE) == 0)
return (EBADF);
/*
* We pass this call down to the underlying disk.
*/
ret = VOP_IOCTL(cs->sc_tvn, cmd, data, flag, l->l_cred);
break;
default:
ret = dk_ioctl(di, dksc, dev, cmd, data, flag, l);
break;