xnu-4903.231.4.tar.gz

[apple/xnu.git] / osfmk / vm / vm_pageout.c

diff --git a/osfmk/vm/vm_pageout.c b/osfmk/vm/vm_pageout.c
index bf722548b023d5a64d32add02f84b4ebf62529df..7aaef6cdd3b584db98ad2c9dc4d5dc6e34081e2e 100644 (file)
--- a/osfmk/vm/vm_pageout.c
+++ b/osfmk/vm/vm_pageout.c
@@ -1742,6 +1742,7 @@ void update_vm_info(void)
        record_memory_pressure();
 }
 
+extern boolean_t hibernation_vmqueues_inspection;
 
 void
 vm_page_balance_inactive(int max_to_move)
@@ -1750,6 +1751,17 @@ vm_page_balance_inactive(int max_to_move)
 
        LCK_MTX_ASSERT(&vm_page_queue_lock, LCK_MTX_ASSERT_OWNED);
 
+       if (hibernation_vmqueues_inspection == TRUE) {
+               /*
+                * It is likely that the hibernation code path is
+                * dealing with these very queues as we are about
+                * to move pages around in/from them and completely
+                * change the linkage of the pages.
+                *
+                * And so we skip the rebalancing of these queues.
+                */
+               return;
+       }
        vm_page_inactive_target = VM_PAGE_INACTIVE_TARGET(vm_page_active_count +
                                                          vm_page_inactive_count +
                                                          vm_page_speculative_count);