Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6

[karo-tx-linux.git] / drivers / vhost / vhost.h

diff --git a/drivers/vhost/vhost.h b/drivers/vhost/vhost.h
index edc892989992bdfed2a9cd015b2593f2b28616b2..073d06ae091f26efc519323f37b94d9ab56c2817 100644 (file)
--- a/drivers/vhost/vhost.h
+++ b/drivers/vhost/vhost.h
@@ -104,7 +104,7 @@ struct vhost_virtqueue {
         * vhost_work execution acts instead of rcu_read_lock() and the end of
         * vhost_work execution acts instead of rcu_read_lock().
         * Writers use virtqueue mutex. */
-       void *private_data;
+       void __rcu *private_data;
        /* Log write descriptors */
        void __user *log_base;
        struct vhost_log *log;
@@ -114,7 +114,7 @@ struct vhost_dev {
        /* Readers use RCU to access memory table pointer
         * log base pointer and features.
         * Writers use mutex below.*/
-       struct vhost_memory *memory;
+       struct vhost_memory __rcu *memory;
        struct mm_struct *mm;
        struct mutex mutex;
        unsigned acked_features;
@@ -171,7 +171,11 @@ enum {
 
 static inline int vhost_has_feature(struct vhost_dev *dev, int bit)
 {
-       unsigned acked_features = rcu_dereference(dev->acked_features);
+       unsigned acked_features;
+
+       acked_features =
+               rcu_dereference_index_check(dev->acked_features,
+                                           lockdep_is_held(&dev->mutex));
        return acked_features & (1 << bit);
 }