uio: Export definition of struct uio_device

In order to prevent a O(n) search of the filesystem to link up its uio
node with its target configuration, TCMU needs to know the minor number
that UIO assigned. Expose the definition of this struct so TCMU can
access this field.

Signed-off-by: Andy Grover <agrover@redhat.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>

diff --git a/drivers/uio/uio.c b/drivers/uio/uio.c
index a673e5b6a2e0b7500cdf6f101b5467f4a8e58da2..60fa6278fbceffd460890de52e50c9c31ade080c 100644 (file)
--- a/drivers/uio/uio.c
+++ b/drivers/uio/uio.c
@@ -28,18 +28,6 @@
 
 #define UIO_MAX_DEVICES                (1U << MINORBITS)
 
-struct uio_device {
-       struct module           *owner;
-       struct device           *dev;
-       int                     minor;
-       atomic_t                event;
-       struct fasync_struct    *async_queue;
-       wait_queue_head_t       wait;
-       struct uio_info         *info;
-       struct kobject          *map_dir;
-       struct kobject          *portio_dir;
-};
-
 static int uio_major;
 static struct cdev *uio_cdev;
 static DEFINE_IDR(uio_idr);

diff --git a/include/linux/uio_driver.h b/include/linux/uio_driver.h
index 1ad4724458de0127424795eede13c63ef344476f..baa81718d985afd9e90d70e90f18e66f96da5f8d 100644 (file)
--- a/include/linux/uio_driver.h
+++ b/include/linux/uio_driver.h
@@ -63,7 +63,17 @@ struct uio_port {
 
 #define MAX_UIO_PORT_REGIONS   5
 
-struct uio_device;
+struct uio_device {
+        struct module           *owner;
+        struct device           *dev;
+        int                     minor;
+        atomic_t                event;
+        struct fasync_struct    *async_queue;
+        wait_queue_head_t       wait;
+        struct uio_info         *info;
+        struct kobject          *map_dir;
+        struct kobject          *portio_dir;
+};
 
 /**
  * struct uio_info - UIO device capabilities