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-rw-r--r--drivers/vhost/vhost.h19
1 files changed, 6 insertions, 13 deletions
diff --git a/drivers/vhost/vhost.h b/drivers/vhost/vhost.h
index 35eeb2a..3eda654 100644
--- a/drivers/vhost/vhost.h
+++ b/drivers/vhost/vhost.h
@@ -104,20 +104,18 @@ struct vhost_virtqueue {
struct iovec *indirect;
struct vring_used_elem *heads;
/* Protected by virtqueue mutex. */
+ struct vhost_memory *memory;
void *private_data;
+ unsigned acked_features;
/* Log write descriptors */
void __user *log_base;
struct vhost_log *log;
};
struct vhost_dev {
- /* Readers use RCU to access memory table pointer
- * log base pointer and features.
- * Writers use mutex below.*/
- struct vhost_memory __rcu *memory;
+ struct vhost_memory *memory;
struct mm_struct *mm;
struct mutex mutex;
- unsigned acked_features;
struct vhost_virtqueue **vqs;
int nvqs;
struct file *log_file;
@@ -140,7 +138,7 @@ long vhost_vring_ioctl(struct vhost_dev *d, int ioctl, void __user *argp);
int vhost_vq_access_ok(struct vhost_virtqueue *vq);
int vhost_log_access_ok(struct vhost_dev *);
-int vhost_get_vq_desc(struct vhost_dev *, struct vhost_virtqueue *,
+int vhost_get_vq_desc(struct vhost_virtqueue *,
struct iovec iov[], unsigned int iov_count,
unsigned int *out_num, unsigned int *in_num,
struct vhost_log *log, unsigned int *log_num);
@@ -174,13 +172,8 @@ enum {
(1ULL << VHOST_F_LOG_ALL),
};
-static inline int vhost_has_feature(struct vhost_dev *dev, int bit)
+static inline int vhost_has_feature(struct vhost_virtqueue *vq, int bit)
{
- unsigned acked_features;
-
- /* TODO: check that we are running from vhost_worker or dev mutex is
- * held? */
- acked_features = rcu_dereference_index_check(dev->acked_features, 1);
- return acked_features & (1 << bit);
+ return vq->acked_features & (1 << bit);
}
#endif
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