Do not bother walking mount point vnode list just to calculate

the number of vnodes. Use precomputed mp->mnt_nvnodelistsize value instead.
2003-11-01 04:36:50 +00:00 · 2003-11-01 04:36:50 +00:00 · b792e03079
commit b792e03079
parent 85bdc65a80
1 changed files with 1 additions and 5 deletions
--- a/sys/fs/unionfs/union_vfsops.c
+++ b/sys/fs/unionfs/union_vfsops.c
@ -351,11 +351,7 @@ union_unmount(mp, mntflags, td)
 		int n;

 		/* count #vnodes held on mount list */
-		mtx_lock(&mntvnode_mtx);
-		n = 0;
-		TAILQ_FOREACH(vp, &mp->mnt_nvnodelist, v_nmntvnodes)
-			n++;
-		mtx_unlock(&mntvnode_mtx);
+		n = mp->mnt_nvnodelistsize;

 		/* if this is unchanged then stop */
 		if (n == freeing)