svn commit: r192212 - user/kmacy/ZFS_MFC/sys/cddl/contrib/opensolaris/uts/common/fs/zfs

[Kip Macy]

Author: kmacy
Date: Sat May 16 20:34:57 2009
New Revision: 192212
URL: http://svn.freebsd.org/changeset/base/192212

Log:
  only use direct map if we have more than 2GB

Modified:
  user/kmacy/ZFS_MFC/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/arc.c

Modified: user/kmacy/ZFS_MFC/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/arc.c
==============================================================================
--- user/kmacy/ZFS_MFC/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/arc.c	Sat May 16 20:33:13 2009	(r192211)
+++ user/kmacy/ZFS_MFC/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/arc.c	Sat May 16 20:34:57 2009	(r192212)
@@ -3434,7 +3434,7 @@ arc_init(void)
 	/* Start out with 1/8 of all memory */
 #if defined(_KERNEL) && (__amd64__)
 	arc_c = physmem*PAGE_SIZE / 8;
-	if (physmem*PAGE_SIZE > kmem_size())
+	if (physmem*PAGE_SIZE > kmem_size() && (1UL<<31))
 		arc_large_memory_enabled = 1;
 #else
 	arc_c = kmem_size() / 8;