[src/netbsd-7]: src/sys/external/bsd/drm2/ttm Pull up following revision(s) (...

[snj <snj%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/8848385e19bc
branches:  netbsd-7
changeset: 798358:8848385e19bc
user:      snj <snj%NetBSD.org@localhost>
date:      Sun Sep 21 18:04:38 2014 +0000

description:
Pull up following revision(s) (requested by riastradh in ticket #98):
        sys/external/bsd/drm2/ttm/ttm_bo_vm.c: revision 1.5
We dropped vmobjlock, so reacquire it before uvmfault_unlockall.

diffstat:

 sys/external/bsd/drm2/ttm/ttm_bo_vm.c |  10 ++++++----
 1 files changed, 6 insertions(+), 4 deletions(-)

diffs (32 lines):

diff -r 47f30681bc2f -r 8848385e19bc sys/external/bsd/drm2/ttm/ttm_bo_vm.c
--- a/sys/external/bsd/drm2/ttm/ttm_bo_vm.c     Sun Sep 21 18:03:33 2014 +0000
+++ b/sys/external/bsd/drm2/ttm/ttm_bo_vm.c     Sun Sep 21 18:04:38 2014 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: ttm_bo_vm.c,v 1.2.4.2 2014/08/22 10:35:59 martin Exp $ */
+/*     $NetBSD: ttm_bo_vm.c,v 1.2.4.3 2014/09/21 18:04:38 snj Exp $    */
 
 /*-
  * Copyright (c) 2014 The NetBSD Foundation, Inc.
@@ -30,7 +30,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: ttm_bo_vm.c,v 1.2.4.2 2014/08/22 10:35:59 martin Exp $");
+__KERNEL_RCSID(0, "$NetBSD: ttm_bo_vm.c,v 1.2.4.3 2014/09/21 18:04:38 snj Exp $");
 
 #include <sys/types.h>
 
@@ -107,9 +107,11 @@
                if (ret != -EBUSY)
                        goto out0;
                /*
-                * It's currently locked.  Unlock the fault, wait for
-                * it, and start over.
+                * It's currently locked.  Unlock the fault (requires
+                * relocking uobj's vmobjlock first), wait for it, and
+                * start over.
                 */
+               mutex_enter(uobj->vmobjlock);
                uvmfault_unlockall(ufi, ufi->entry->aref.ar_amap, uobj);
                (void)ttm_bo_wait_unreserved(bo);
                return -ERESTART;