--- Net2/vm/swap_pager.c	2018/04/24 18:03:57	1.1.1.1
+++ Net2/vm/swap_pager.c	2018/04/24 18:09:23	1.1.1.4
@@ -37,8 +37,17 @@
  *
  * from: Utah $Hdr: swap_pager.c 1.4 91/04/30$
  *
+ *
+ * PATCHES MAGIC                LEVEL   PATCH THAT GOT US HERE
+ * --------------------         -----   ----------------------
+ * CURRENT PATCH LEVEL:         1       00075
+ * --------------------         -----   ----------------------
+ *
+ * 22 Jan 1993		Bruce Evans	Fixed unmatched spl calls
+ *
  *	@(#)swap_pager.c	7.4 (Berkeley) 5/7/91
  */
+static char rcsid[] = "$Header: /var/lib/cvsd/net2/Net2/vm/swap_pager.c,v 1.1.1.4 2018/04/24 18:09:23 root Exp $";
 
 /*
  * Quick hack to page to dedicated partition(s).
@@ -53,12 +62,12 @@
 #include "param.h"
 #include "proc.h"
 #include "buf.h"
-#include "map.h"
 #include "systm.h"
 #include "specdev.h"
 #include "vnode.h"
 #include "malloc.h"
 #include "queue.h"
+#include "rlist.h"
 
 #include "vm_param.h"
 #include "queue.h"
@@ -74,7 +83,7 @@
 #define MAXDADDRS	64	/* max # of disk addrs for fixed allocations */
 
 #ifdef DEBUG
-int	swpagerdebug = 0x100;
+int	swpagerdebug = 0 /*0x100*/;
 #define	SDB_FOLLOW	0x001
 #define SDB_INIT	0x002
 #define SDB_ALLOC	0x004
@@ -345,6 +354,7 @@ swap_pager_dealloc(pager)
 	/*
 	 * Free left over swap blocks
 	 */
+	s = splbio();
 	for (i = 0, bp = swp->sw_blocks; i < swp->sw_nblocks; i++, bp++)
 		if (bp->swb_block) {
 #ifdef DEBUG
@@ -352,8 +362,10 @@ swap_pager_dealloc(pager)
 				printf("swpg_dealloc: blk %x\n",
 				       bp->swb_block);
 #endif
-			rmfree(swapmap, swp->sw_bsize, bp->swb_block);
+			rlist_free(&swapmap, (unsigned)bp->swb_block,
+				(unsigned)bp->swb_block + swp->sw_bsize - 1);
 		}
+	splx(s);
 	/*
 	 * Free swap management resources
 	 */
@@ -515,6 +527,7 @@ swap_pager_io(swp, m, flags)
 #endif
 		return(VM_PAGER_FAIL);
 	}
+	s = splbio();
 	swb = &swp->sw_blocks[ix];
 	off = off % dbtob(swp->sw_bsize);
 	if (flags & B_READ) {
@@ -529,16 +542,23 @@ swap_pager_io(swp, m, flags)
 				       m->offset, m->object->paging_offset);
 #endif
 			/* XXX: should we zero page here?? */
+	splx(s);
 			return(VM_PAGER_FAIL);
 		}
 	} else if (swb->swb_block == 0) {
+#ifdef old
 		swb->swb_block = rmalloc(swapmap, swp->sw_bsize);
 		if (swb->swb_block == 0) {
+#else
+		if (!rlist_alloc(&swapmap, (unsigned)swp->sw_bsize,
+			(unsigned *)&swb->swb_block)) {
+#endif
 #ifdef DEBUG
 			if (swpagerdebug & SDB_FAIL)
 				printf("swpg_io: rmalloc of %x failed\n",
 				       swp->sw_bsize);
 #endif
+	splx(s);
 			return(VM_PAGER_FAIL);
 		}
 #ifdef DEBUG
@@ -547,6 +567,7 @@ swap_pager_io(swp, m, flags)
 			       swp->sw_blocks, swb->swb_block, ix);
 #endif
 	}
+	splx(s);
 
 	/*
 	 * Allocate a kernel virtual address and initialize so that PTE
@@ -652,7 +673,7 @@ swap_pager_io(swp, m, flags)
 		--swap_pager_poip;
 #endif
 	rv = (bp->b_flags & B_ERROR) ? VM_PAGER_FAIL : VM_PAGER_OK;
-	bp->b_flags &= ~(B_BUSY|B_WANTED|B_PHYS|B_PAGET|B_UAREA|B_DIRTY);
+	bp->b_flags &= ~(B_BUSY|B_WANTED|B_PHYS|B_DIRTY);
 	bp->av_forw = bswlist.av_forw;
 	bswlist.av_forw = bp;
 	if (bp->b_vp)
@@ -853,8 +874,10 @@ swap_pager_iodone(bp)
 
 	spc->spc_flags &= ~SPC_BUSY;
 	spc->spc_flags |= SPC_DONE;
-	if (bp->b_flags & B_ERROR)
+	if (bp->b_flags & B_ERROR) {
 		spc->spc_flags |= SPC_ERROR;
+printf("error %d blkno %d sz %d ", bp->b_error, bp->b_blkno, bp->b_bcount);
+	}
 	spc->spc_bp = NULL;
 	blk = bp->b_blkno;
 
@@ -872,7 +895,7 @@ swap_pager_iodone(bp)
 		thread_wakeup((int)spc->spc_swp);
 	}
 		
-	bp->b_flags &= ~(B_BUSY|B_WANTED|B_PHYS|B_PAGET|B_UAREA|B_DIRTY);
+	bp->b_flags &= ~(B_BUSY|B_WANTED|B_PHYS|B_DIRTY);
 	bp->av_forw = bswlist.av_forw;
 	bswlist.av_forw = bp;
 	if (bp->b_vp)