svn commit: r327708 - user/jeff/numa/sys/kern

[Jeff Roberson]

Author: jeff
Date: Mon Jan  8 22:59:36 2018
New Revision: 327708
URL: https://svnweb.freebsd.org/changeset/base/327708

Log:
  Allow the per-domain kernel vmems to dip into reserves.

Modified:
  user/jeff/numa/sys/kern/subr_vmem.c

Modified: user/jeff/numa/sys/kern/subr_vmem.c
==============================================================================
--- user/jeff/numa/sys/kern/subr_vmem.c	Mon Jan  8 21:27:41 2018	(r327707)
+++ user/jeff/numa/sys/kern/subr_vmem.c	Mon Jan  8 22:59:36 2018	(r327708)
@@ -257,11 +257,11 @@ bt_fill(vmem_t *vm, int flags)
 	VMEM_ASSERT_LOCKED(vm);
 
 	/*
-	 * Only allow the kernel arena to dip into reserve tags.  It is the
-	 * vmem where new tags come from.
+	 * Only allow the kernel arena and arenas derived from kernel arena to
+	 * dip into reserve tags.  They are where new tags come from.
 	 */
 	flags &= BT_FLAGS;
-	if (vm != kernel_arena)
+	if (vm != kernel_arena && vm->vm_arg != kernel_arena)
 		flags &= ~M_USE_RESERVE;
 
 	/*