1 files changed, 0 insertions, 182 deletions

diff --git a/libdde-linux26/libdde_linux26/contrib/block/blk-ioc.c b/libdde-linux26/libdde_linux26/contrib/block/blk-ioc.c
deleted file mode 100644
index e7235861..00000000
--- a/libdde-linux26/libdde_linux26/contrib/block/blk-ioc.c
+++ /dev/null
@@ -1,182 +0,0 @@
-/*
- * Functions related to io context handling
- */
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/init.h>
-#include <linux/bio.h>
-#include <linux/blkdev.h>
-#include <linux/bootmem.h>	/* for max_pfn/max_low_pfn */
-
-#include "blk.h"
-
-#include <ddekit/timer.h>
-
-/*
- * For io context allocations
- */
-static struct kmem_cache *iocontext_cachep;
-
-static void cfq_dtor(struct io_context *ioc)
-{
-	if (!hlist_empty(&ioc->cic_list)) {
-		struct cfq_io_context *cic;
-
-		cic = list_entry(ioc->cic_list.first, struct cfq_io_context,
-								cic_list);
-		cic->dtor(ioc);
-	}
-}
-
-/*
- * IO Context helper functions. put_io_context() returns 1 if there are no
- * more users of this io context, 0 otherwise.
- */
-int put_io_context(struct io_context *ioc)
-{
-	if (ioc == NULL)
-		return 1;
-
-	BUG_ON(atomic_read(&ioc->refcount) == 0);
-
-	if (atomic_dec_and_test(&ioc->refcount)) {
-		rcu_read_lock();
-		if (ioc->aic && ioc->aic->dtor)
-			ioc->aic->dtor(ioc->aic);
-		cfq_dtor(ioc);
-		rcu_read_unlock();
-
-		kmem_cache_free(iocontext_cachep, ioc);
-		return 1;
-	}
-	return 0;
-}
-EXPORT_SYMBOL(put_io_context);
-
-static void cfq_exit(struct io_context *ioc)
-{
-	rcu_read_lock();
-
-	if (!hlist_empty(&ioc->cic_list)) {
-		struct cfq_io_context *cic;
-
-		cic = list_entry(ioc->cic_list.first, struct cfq_io_context,
-								cic_list);
-		cic->exit(ioc);
-	}
-	rcu_read_unlock();
-}
-
-/* Called by the exitting task */
-void exit_io_context(void)
-{
-	struct io_context *ioc;
-
-	task_lock(current);
-	ioc = current->io_context;
-	current->io_context = NULL;
-	task_unlock(current);
-
-	if (atomic_dec_and_test(&ioc->nr_tasks)) {
-		if (ioc->aic && ioc->aic->exit)
-			ioc->aic->exit(ioc->aic);
-		cfq_exit(ioc);
-
-		put_io_context(ioc);
-	}
-}
-
-struct io_context *alloc_io_context(gfp_t gfp_flags, int node)
-{
-	struct io_context *ret;
-
-	ret = kmem_cache_alloc_node(iocontext_cachep, gfp_flags, node);
-	if (ret) {
-		atomic_set(&ret->refcount, 1);
-		atomic_set(&ret->nr_tasks, 1);
-		spin_lock_init(&ret->lock);
-		ret->ioprio_changed = 0;
-		ret->ioprio = 0;
-		ret->last_waited = jiffies; /* doesn't matter... */
-		ret->nr_batch_requests = 0; /* because this is 0 */
-		ret->aic = NULL;
-		INIT_RADIX_TREE(&ret->radix_root, GFP_ATOMIC | __GFP_HIGH);
-		INIT_HLIST_HEAD(&ret->cic_list);
-		ret->ioc_data = NULL;
-	}
-
-	return ret;
-}
-
-/*
- * If the current task has no IO context then create one and initialise it.
- * Otherwise, return its existing IO context.
- *
- * This returned IO context doesn't have a specifically elevated refcount,
- * but since the current task itself holds a reference, the context can be
- * used in general code, so long as it stays within `current` context.
- */
-struct io_context *current_io_context(gfp_t gfp_flags, int node)
-{
-	struct task_struct *tsk = current;
-	struct io_context *ret;
-
-	ret = tsk->io_context;
-	if (likely(ret))
-		return ret;
-
-	ret = alloc_io_context(gfp_flags, node);
-	if (ret) {
-		/* make sure set_task_ioprio() sees the settings above */
-		smp_wmb();
-		tsk->io_context = ret;
-	}
-
-	return ret;
-}
-
-/*
- * If the current task has no IO context then create one and initialise it.
- * If it does have a context, take a ref on it.
- *
- * This is always called in the context of the task which submitted the I/O.
- */
-struct io_context *get_io_context(gfp_t gfp_flags, int node)
-{
-	struct io_context *ret = NULL;
-
-	/*
-	 * Check for unlikely race with exiting task. ioc ref count is
-	 * zero when ioc is being detached.
-	 */
-	do {
-		ret = current_io_context(gfp_flags, node);
-		if (unlikely(!ret))
-			break;
-	} while (!atomic_inc_not_zero(&ret->refcount));
-
-	return ret;
-}
-EXPORT_SYMBOL(get_io_context);
-
-void copy_io_context(struct io_context **pdst, struct io_context **psrc)
-{
-	struct io_context *src = *psrc;
-	struct io_context *dst = *pdst;
-
-	if (src) {
-		BUG_ON(atomic_read(&src->refcount) == 0);
-		atomic_inc(&src->refcount);
-		put_io_context(dst);
-		*pdst = src;
-	}
-}
-EXPORT_SYMBOL(copy_io_context);
-
-static int __init blk_ioc_init(void)
-{
-	iocontext_cachep = kmem_cache_create("blkdev_ioc",
-			sizeof(struct io_context), 0, SLAB_PANIC, NULL);
-	return 0;
-}
-subsys_initcall(blk_ioc_init);