diff options
| -rw-r--r-- | drivers/xen/xenfs/xenbus.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/xen/xenfs/xenbus.c b/drivers/xen/xenfs/xenbus.c index c4c7db8363e..55791dd1105 100644 --- a/drivers/xen/xenfs/xenbus.c +++ b/drivers/xen/xenfs/xenbus.c @@ -120,6 +120,7 @@ static ssize_t xenbus_file_read(struct file *filp, int ret; mutex_lock(&u->reply_mutex); +again: while (list_empty(&u->read_buffers)) { mutex_unlock(&u->reply_mutex); if (filp->f_flags & O_NONBLOCK) @@ -158,6 +159,8 @@ static ssize_t xenbus_file_read(struct file *filp, struct read_buffer, list); } } + if (i == 0) + goto again; out: mutex_unlock(&u->reply_mutex); |