1 files changed, 0 insertions, 152 deletions
diff --git a/ANDROID_3.4.5/include/linux/iocontext.h b/ANDROID_3.4.5/include/linux/iocontext.h
deleted file mode 100644
index 1a301806..00000000
--- a/ANDROID_3.4.5/include/linux/iocontext.h
+++ /dev/null
@@ -1,152 +0,0 @@
-#ifndef IOCONTEXT_H
-#define IOCONTEXT_H
-
-#include <linux/radix-tree.h>
-#include <linux/rcupdate.h>
-#include <linux/workqueue.h>
-
-enum {
-	ICQ_IOPRIO_CHANGED	= 1 << 0,
-	ICQ_CGROUP_CHANGED	= 1 << 1,
-	ICQ_EXITED		= 1 << 2,
-
-	ICQ_CHANGED_MASK	= ICQ_IOPRIO_CHANGED | ICQ_CGROUP_CHANGED,
-};
-
-/*
- * An io_cq (icq) is association between an io_context (ioc) and a
- * request_queue (q).  This is used by elevators which need to track
- * information per ioc - q pair.
- *
- * Elevator can request use of icq by setting elevator_type->icq_size and
- * ->icq_align.  Both size and align must be larger than that of struct
- * io_cq and elevator can use the tail area for private information.  The
- * recommended way to do this is defining a struct which contains io_cq as
- * the first member followed by private members and using its size and
- * align.  For example,
- *
- *	struct snail_io_cq {
- *		struct io_cq	icq;
- *		int		poke_snail;
- *		int		feed_snail;
- *	};
- *
- *	struct elevator_type snail_elv_type {
- *		.ops =		{ ... },
- *		.icq_size =	sizeof(struct snail_io_cq),
- *		.icq_align =	__alignof__(struct snail_io_cq),
- *		...
- *	};
- *
- * If icq_size is set, block core will manage icq's.  All requests will
- * have its ->elv.icq field set before elevator_ops->elevator_set_req_fn()
- * is called and be holding a reference to the associated io_context.
- *
- * Whenever a new icq is created, elevator_ops->elevator_init_icq_fn() is
- * called and, on destruction, ->elevator_exit_icq_fn().  Both functions
- * are called with both the associated io_context and queue locks held.
- *
- * Elevator is allowed to lookup icq using ioc_lookup_icq() while holding
- * queue lock but the returned icq is valid only until the queue lock is
- * released.  Elevators can not and should not try to create or destroy
- * icq's.
- *
- * As icq's are linked from both ioc and q, the locking rules are a bit
- * complex.
- *
- * - ioc lock nests inside q lock.
- *
- * - ioc->icq_list and icq->ioc_node are protected by ioc lock.
- *   q->icq_list and icq->q_node by q lock.
- *
- * - ioc->icq_tree and ioc->icq_hint are protected by ioc lock, while icq
- *   itself is protected by q lock.  However, both the indexes and icq
- *   itself are also RCU managed and lookup can be performed holding only
- *   the q lock.
- *
- * - icq's are not reference counted.  They are destroyed when either the
- *   ioc or q goes away.  Each request with icq set holds an extra
- *   reference to ioc to ensure it stays until the request is completed.
- *
- * - Linking and unlinking icq's are performed while holding both ioc and q
- *   locks.  Due to the lock ordering, q exit is simple but ioc exit
- *   requires reverse-order double lock dance.
- */
-struct io_cq {
-	struct request_queue	*q;
-	struct io_context	*ioc;
-
-	/*
-	 * q_node and ioc_node link io_cq through icq_list of q and ioc
-	 * respectively.  Both fields are unused once ioc_exit_icq() is
-	 * called and shared with __rcu_icq_cache and __rcu_head which are
-	 * used for RCU free of io_cq.
-	 */
-	union {
-		struct list_head	q_node;
-		struct kmem_cache	*__rcu_icq_cache;
-	};
-	union {
-		struct hlist_node	ioc_node;
-		struct rcu_head		__rcu_head;
-	};
-
-	unsigned int		flags;
-};
-
-/*
- * I/O subsystem state of the associated processes.  It is refcounted
- * and kmalloc'ed. These could be shared between processes.
- */
-struct io_context {
-	atomic_long_t refcount;
-	atomic_t nr_tasks;
-
-	/* all the fields below are protected by this lock */
-	spinlock_t lock;
-
-	unsigned short ioprio;
-
-	/*
-	 * For request batching
-	 */
-	int nr_batch_requests;     /* Number of requests left in the batch */
-	unsigned long last_waited; /* Time last woken after wait for request */
-
-	struct radix_tree_root	icq_tree;
-	struct io_cq __rcu	*icq_hint;
-	struct hlist_head	icq_list;
-
-	struct work_struct release_work;
-};
-
-static inline struct io_context *ioc_task_link(struct io_context *ioc)
-{
-	/*
-	 * if ref count is zero, don't allow sharing (ioc is going away, it's
-	 * a race).
-	 */
-	if (ioc && atomic_long_inc_not_zero(&ioc->refcount)) {
-		atomic_inc(&ioc->nr_tasks);
-		return ioc;
-	}
-
-	return NULL;
-}
-
-struct task_struct;
-#ifdef CONFIG_BLOCK
-void put_io_context(struct io_context *ioc);
-void exit_io_context(struct task_struct *task);
-struct io_context *get_task_io_context(struct task_struct *task,
-				       gfp_t gfp_flags, int node);
-void ioc_ioprio_changed(struct io_context *ioc, int ioprio);
-void ioc_cgroup_changed(struct io_context *ioc);
-unsigned int icq_get_changed(struct io_cq *icq);
-#else
-struct io_context;
-static inline void put_io_context(struct io_context *ioc) { }
-static inline void exit_io_context(struct task_struct *task) { }
-#endif
-
-#endif