Index: zfs_vnops.c
===================================================================
RCS file: /zoo/pjd/repo/src/sys/contrib/opensolaris/uts/common/fs/zfs/zfs_vnops.c,v
retrieving revision 1.24
diff -u -p -r1.24 zfs_vnops.c
--- zfs_vnops.c	24 Jul 2007 15:00:43 -0000	1.24
+++ zfs_vnops.c	9 Nov 2007 22:20:26 -0000
@@ -305,6 +305,8 @@ mappedwrite(vnode_t *vp, int nbytes, uio
 		uint64_t fsize;
 
 again:
+		vm_page_cache_free(obj, OFF_TO_IDX(start),
+		    OFF_TO_IDX(start) + 1);
 		if ((m = vm_page_lookup(obj, OFF_TO_IDX(start))) != NULL &&
 		    vm_page_is_valid(m, (vm_offset_t)off, bytes)) {
 			uint64_t woff;
@@ -395,6 +397,8 @@ mappedread(vnode_t *vp, int nbytes, uio_
 		uint64_t bytes = MIN(PAGESIZE - off, len);
 
 again:
+		vm_page_cache_free(obj, OFF_TO_IDX(start),
+		    OFF_TO_IDX(start) + 1);
 		if ((m = vm_page_lookup(obj, OFF_TO_IDX(start))) != NULL &&
 		    vm_page_is_valid(m, (vm_offset_t)off, bytes)) {
 			if (vm_page_sleep_if_busy(m, FALSE, "zfsmrb"))