uio: Export definition of struct uio_device (f14bb039) · Commits · 戴 / test

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>

drivers/uio/uio.c

+0 −12

Original line number	Diff line number	Diff line
		@@ -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);

include/linux/uio_driver.h

+11 −1

Original line number	Diff line number	Diff line
		@@ -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

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