From af1fa2025c1adbd3aa43852fd421e5de95e7e48a Mon Sep 17 00:00:00 2001
From: phk <phk@FreeBSD.org>
Date: Thu, 17 Feb 2005 10:49:51 +0000
Subject: Introduce vx_wait{l}() and use it instead of home-rolled versions.

---
 sys/fs/deadfs/dead_vnops.c | 31 +++++--------------------------
 1 file changed, 5 insertions(+), 26 deletions(-)

(limited to 'sys/fs/deadfs')

diff --git a/sys/fs/deadfs/dead_vnops.c b/sys/fs/deadfs/dead_vnops.c
index 3d3a65a..ca32893 100644
--- a/sys/fs/deadfs/dead_vnops.c
+++ b/sys/fs/deadfs/dead_vnops.c
@@ -38,7 +38,6 @@
 #include <sys/poll.h>
 #include <sys/vnode.h>
 
-static int	chkvnlock(struct vnode *);
 /*
  * Prototypes for dead operations on vnodes.
  */
@@ -129,7 +128,7 @@ dead_read(ap)
 	} */ *ap;
 {
 
-	if (chkvnlock(ap->a_vp))
+	if (vx_wait(ap->a_vp))
 		panic("dead_read: lock");
 	/*
 	 * Return EOF for tty devices, EIO for others
@@ -153,7 +152,7 @@ dead_write(ap)
 	} */ *ap;
 {
 
-	if (chkvnlock(ap->a_vp))
+	if (vx_wait(ap->a_vp))
 		panic("dead_write: lock");
 	return (EIO);
 }
@@ -174,7 +173,7 @@ dead_ioctl(ap)
 	} */ *ap;
 {
 
-	if (!chkvnlock(ap->a_vp))
+	if (!vx_wait(ap->a_vp))
 		return (ENOTTY);
 	/* XXX: Doesn't this just recurse back here ? */
 	return (VOP_IOCTL_AP(ap));
@@ -202,7 +201,7 @@ dead_lock(ap)
 		mtx_unlock(&vp->v_interlock);
 		ap->a_flags &= ~LK_INTERLOCK;
 	}
-	if (!chkvnlock(vp))
+	if (!vx_wait(vp))
 		return (0);
 	return (VOP_LOCK_AP(ap));
 }
@@ -222,32 +221,12 @@ dead_bmap(ap)
 	} */ *ap;
 {
 
-	if (!chkvnlock(ap->a_vp))
+	if (!vx_wait(ap->a_vp))
 		return (EIO);
 	return (VOP_BMAP(ap->a_vp, ap->a_bn, ap->a_bop, ap->a_bnp, ap->a_runp, ap->a_runb));
 }
 
 /*
- * We have to wait during times when the vnode is
- * in a state of change.
- */
-static int
-chkvnlock(vp)
-	register struct vnode *vp;
-{
-	int locked = 0;
-
-	VI_LOCK(vp);
-	while (vp->v_iflag & VI_XLOCK) {
-		vp->v_iflag |= VI_XWANT;
-		(void) msleep((caddr_t)vp, VI_MTX(vp), PINOD, "ckvnlk", 0);
-		locked = 1;
-	}
-	VI_UNLOCK(vp);
-	return (locked);
-}
-
-/*
  * Trivial poll routine that always returns POLLHUP.
  * This is necessary so that a process which is polling a file
  * gets notified when that file is revoke()d.
-- 
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