mm/hotplug: invalid PFNs from pfn_to_online_page()

[mirror_ubuntu-bionic-kernel.git] / include / linux / hyperv.h

diff --git a/include/linux/hyperv.h b/include/linux/hyperv.h
index 6c9336626592b0a07e4216ea97a72a050e7146d4..a08587861f12d7866057c367a637400cd09954db 100644 (file)
--- a/include/linux/hyperv.h
+++ b/include/linux/hyperv.h
@@ -878,6 +878,13 @@ struct vmbus_channel {
 
        bool probe_done;
 
+       /*
+        * We must offload the handling of the primary/sub channels
+        * from the single-threaded vmbus_connection.work_queue to
+        * two different workqueue, otherwise we can block
+        * vmbus_connection.work_queue and hang: see vmbus_process_offer().
+        */
+       struct work_struct add_channel_work;
 };
 
 static inline bool is_hvsock_channel(const struct vmbus_channel *c)
@@ -1035,6 +1042,8 @@ extern int vmbus_establish_gpadl(struct vmbus_channel *channel,
 extern int vmbus_teardown_gpadl(struct vmbus_channel *channel,
                                     u32 gpadl_handle);
 
+void vmbus_reset_channel_cb(struct vmbus_channel *channel);
+
 extern int vmbus_recvpacket(struct vmbus_channel *channel,
                                  void *buffer,
                                  u32 bufferlen,
@@ -1131,8 +1140,9 @@ struct hv_ring_buffer_debug_info {
        u32 bytes_avail_towrite;
 };
 
-void hv_ringbuffer_get_debuginfo(const struct hv_ring_buffer_info *ring_info,
-                           struct hv_ring_buffer_debug_info *debug_info);
+
+int hv_ringbuffer_get_debuginfo(const struct hv_ring_buffer_info *ring_info,
+                               struct hv_ring_buffer_debug_info *debug_info);
 
 /* Vmbus interface */
 #define vmbus_driver_register(driver)  \