have to unlock object and page queues before sleeping

SCCS-vsn: sys/vm/vm_pageout.c 8.7

diff --git a/usr/src/sys/vm/vm_pageout.c b/usr/src/sys/vm/vm_pageout.c
index 32f0ca5..7a4c2cc 100644 (file)
--- a/usr/src/sys/vm/vm_pageout.c
+++ b/usr/src/sys/vm/vm_pageout.c
@@ -7,7 +7,7 @@
  *
  * %sccs.include.redist.c%
  *
  *
  * %sccs.include.redist.c%
  *

- *     @(#)vm_pageout.c        8.6 (Berkeley) %G%
+ *     @(#)vm_pageout.c        8.7 (Berkeley) %G%

  *
  *
  * Copyright (c) 1987, 1990 Carnegie-Mellon University.
  *
  *
  * Copyright (c) 1987, 1990 Carnegie-Mellon University.


@@ -295,7 +295,11 @@ vm_pageout_page(m, object)
                 * shortage, so we put pause for awhile and try again.
                 * XXX could get stuck here.
                 */
                 * shortage, so we put pause for awhile and try again.
                 * XXX could get stuck here.
                 */

+               vm_page_unlock_queues();
+               vm_object_unlock(object);

                (void) tsleep((caddr_t)&lbolt, PZERO|PCATCH, "pageout", 0);
                (void) tsleep((caddr_t)&lbolt, PZERO|PCATCH, "pageout", 0);

+               vm_object_lock(object);
+               vm_page_lock_queues();

                break;
        }
        case VM_PAGER_FAIL:
                break;
        }
        case VM_PAGER_FAIL: