From 9f28715adc09173973fce9dea6606d3ba89b64b1 Mon Sep 17 00:00:00 2001
From: jeff <jeff@FreeBSD.org>
Date: Sun, 5 Oct 2003 06:43:30 +0000
Subject:  - Check XLOCK prior to accessing v_data.

---
 sys/fs/coda/coda_subr.c | 6 ++++++
 1 file changed, 6 insertions(+)

(limited to 'sys/fs')

diff --git a/sys/fs/coda/coda_subr.c b/sys/fs/coda/coda_subr.c
index 9871bd6..edb95c9 100644
--- a/sys/fs/coda/coda_subr.c
+++ b/sys/fs/coda/coda_subr.c
@@ -318,6 +318,11 @@ coda_checkunmounting(mp)
 		nvp = TAILQ_NEXT(vp, v_nmntvnodes);
 		if (vp->v_mount != mp)
 			continue;
+		VI_LOCK(vp);
+		if (vp->v_iflag & VI_XLOCK) {
+			VI_UNLOCK(vp);
+			continue;
+		}
 		cp = VTOC(vp);
 		count++;
 		if (!(cp->c_flags & C_UNMOUNTING)) {
@@ -325,6 +330,7 @@ coda_checkunmounting(mp)
 			printf("vp %p, cp %p missed\n", vp, cp);
 			cp->c_flags |= C_UNMOUNTING;
 		}
+		VI_UNLOCK(vp);
 	}
 	mtx_unlock(&mntvnode_mtx);
 }
-- 
cgit v1.1