Back out all the buffer cache changes I committed during c2k9. This reverts three

commits:

1) The sysctl allowing bufcachepercent to be changed at boot time.
2) The change moving the buffer cache hash chains to a red-black tree
3) The dynamic buffer cache (Which depended on the earlier too).

ok on the backout from marco and todd

1 files changed, 1 insertions, 16 deletions

diff --git a/sys/kern/vfs_subr.c b/sys/kern/vfs_subr.c
index ced2bdc291e..4d09d4f20a0 100644
--- a/sys/kern/vfs_subr.c
+++ b/sys/kern/vfs_subr.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: vfs_subr.c,v 1.177 2009/06/06 18:06:22 art Exp $	*/
+/*	$OpenBSD: vfs_subr.c,v 1.178 2009/06/15 17:01:26 beck Exp $	*/
 /*	$NetBSD: vfs_subr.c,v 1.53 1996/04/22 01:39:13 christos Exp $	*/
 
 /*
@@ -59,7 +59,6 @@
 #include <sys/mbuf.h>
 #include <sys/syscallargs.h>
 #include <sys/pool.h>
-#include <sys/tree.h>
 
 #include <uvm/uvm_extern.h>
 #include <sys/sysctl.h>
@@ -116,19 +115,6 @@ void printlockedvnodes(void);
 
 struct pool vnode_pool;
 
-static int rb_buf_compare(struct buf *b1, struct buf *b2);
-RB_GENERATE(buf_rb_bufs, buf, b_rbbufs, rb_buf_compare);
-
-static int
-rb_buf_compare(struct buf *b1, struct buf *b2)
-{
-	if (b1->b_lblkno < b2->b_lblkno)
-		return(-1);
-	if (b1->b_lblkno > b2->b_lblkno)
-		return(1);
-	return(0);
-}
-
 /*
  * Initialize the vnode management data structures.
  */
@@ -359,7 +345,6 @@ getnewvnode(enum vtagtype tag, struct mount *mp, int (**vops)(void *),
 	    ((TAILQ_FIRST(listhd = &vnode_hold_list) == NULL) || toggle))) {
 		splx(s);
 		vp = pool_get(&vnode_pool, PR_WAITOK | PR_ZERO);
-		RB_INIT(&vp->v_bufs_tree);
 		numvnodes++;
 	} else {
 		for (vp = TAILQ_FIRST(listhd); vp != NULLVP;