block: fix merge error from "block, cfq: move icq creation and rq->elv.icq

association to block core"

1 files changed, 0 insertions, 170 deletions

diff --git a/block/cfq-iosched.c b/block/cfq-iosched.c
index a103099..4009bc7 100644
--- a/block/cfq-iosched.c
+++ b/block/cfq-iosched.c
@@ -2941,176 +2941,6 @@ cfq_get_queue(struct cfq_data *cfqd, bool is_sync, struct io_context *ioc,
 }
 
 /**
- * ioc_create_icq - create and link io_cq
- * @q: request_queue of interest
- * @gfp_mask: allocation mask
- *
- * Make sure io_cq linking %current->io_context and @q exists.  If either
- * io_context and/or icq don't exist, they will be created using @gfp_mask.
- *
- * The caller is responsible for ensuring @ioc won't go away and @q is
- * alive and will stay alive until this function returns.
- */
-static struct io_cq *ioc_create_icq(struct request_queue *q, gfp_t gfp_mask)
-{
-	struct elevator_type *et = q->elevator->type;
-	struct io_context *ioc;
-	struct io_cq *icq;
-
-	/* allocate stuff */
-	ioc = create_io_context(current, gfp_mask, q->node);
-	if (!ioc)
-		return NULL;
-
-	icq = kmem_cache_alloc_node(et->icq_cache, gfp_mask | __GFP_ZERO,
-				    q->node);
-	if (!icq)
-		return NULL;
-
-	if (radix_tree_preload(gfp_mask) < 0) {
-		kmem_cache_free(et->icq_cache, icq);
-		return NULL;
-	}
-
-	icq->ioc = ioc;
-	icq->q = q;
-	INIT_LIST_HEAD(&icq->q_node);
-	INIT_HLIST_NODE(&icq->ioc_node);
-
-	/* lock both q and ioc and try to link @icq */
-	spin_lock_irq(q->queue_lock);
-	spin_lock(&ioc->lock);
-
-	if (likely(!radix_tree_insert(&ioc->icq_tree, q->id, icq))) {
-		hlist_add_head(&icq->ioc_node, &ioc->icq_list);
-		list_add(&icq->q_node, &q->icq_list);
-		if (et->ops.elevator_init_icq_fn)
-			et->ops.elevator_init_icq_fn(icq);
-	} else {
-		kmem_cache_free(et->icq_cache, icq);
-		icq = ioc_lookup_icq(ioc, q);
-		if (!icq)
-			printk(KERN_ERR "cfq: icq link failed!\n");
-	}
-
-	spin_unlock(&ioc->lock);
-	spin_unlock_irq(q->queue_lock);
- 	radix_tree_preload_end();
-	return icq;
-}
-
-/**
- * cfq_get_cic - acquire cfq_io_cq and bump refcnt on io_context
- * @cfqd: cfqd to setup cic for
- * @gfp_mask: allocation mask
- *
- * Return cfq_io_cq associating @cfqd and %current->io_context and
- * bump refcnt on io_context.  If ioc or cic doesn't exist, they're created
- * using @gfp_mask.
- *
- * Must be called under queue_lock which may be released and re-acquired.
- * This function also may sleep depending on @gfp_mask.
- */
-static struct cfq_io_cq *cfq_get_cic(struct cfq_data *cfqd, gfp_t gfp_mask)
-{
-	struct request_queue *q = cfqd->queue;
-	struct cfq_io_cq *cic = NULL;
-	struct io_context *ioc;
-
-	lockdep_assert_held(q->queue_lock);
-
-	while (true) {
-		/* fast path */
-		ioc = current->io_context;
-		if (likely(ioc)) {
-			cic = cfq_cic_lookup(cfqd, ioc);
-			if (likely(cic))
-				break;
-		}
-
-		/* slow path - unlock, create missing ones and retry */
-		spin_unlock_irq(q->queue_lock);
-		cic = icq_to_cic(ioc_create_icq(q, gfp_mask));
-		spin_lock_irq(q->queue_lock);
-		if (!cic)
-			return NULL;
-	}
-
-	/* bump @ioc's refcnt and handle changed notifications */
-	get_io_context(ioc);
-
-	if (unlikely(cic->icq.changed)) {
-		if (test_and_clear_bit(ICQ_IOPRIO_CHANGED, &cic->icq.changed))
-			changed_ioprio(cic);
-#ifdef CONFIG_CFQ_GROUP_IOSCHED
-		if (test_and_clear_bit(ICQ_CGROUP_CHANGED, &cic->icq.changed))
-			changed_cgroup(cic);
-#endif
-	}
-
-	return cic;
-}
-
-/**
- * ioc_create_icq - create and link io_cq
- * @q: request_queue of interest
- * @gfp_mask: allocation mask
- *
- * Make sure io_cq linking %current->io_context and @q exists.  If either
- * io_context and/or icq don't exist, they will be created using @gfp_mask.
- *
- * The caller is responsible for ensuring @ioc won't go away and @q is
- * alive and will stay alive until this function returns.
- */
-static struct io_cq *ioc_create_icq(struct request_queue *q, gfp_t gfp_mask)
-{
-	struct elevator_type *et = q->elevator->type;
-	struct io_context *ioc;
-	struct io_cq *icq;
-
-	/* allocate stuff */
-	ioc = create_io_context(current, gfp_mask, q->node);
-	if (!ioc)
-		return NULL;
-
-	icq = kmem_cache_alloc_node(et->icq_cache, gfp_mask | __GFP_ZERO,
-				    q->node);
-	if (!icq)
-		return NULL;
-
-	if (radix_tree_preload(gfp_mask) < 0) {
-		kmem_cache_free(et->icq_cache, icq);
-		return NULL;
-	}
-
-	icq->ioc = ioc;
-	icq->q = q;
-	INIT_LIST_HEAD(&icq->q_node);
-	INIT_HLIST_NODE(&icq->ioc_node);
-
-	/* lock both q and ioc and try to link @icq */
-	spin_lock_irq(q->queue_lock);
-	spin_lock(&ioc->lock);
-
-	if (likely(!radix_tree_insert(&ioc->icq_tree, q->id, icq))) {
-		hlist_add_head(&icq->ioc_node, &ioc->icq_list);
-		list_add(&icq->q_node, &q->icq_list);
-		if (et->ops.elevator_init_icq_fn)
-			et->ops.elevator_init_icq_fn(icq);
-	} else {
-		kmem_cache_free(et->icq_cache, icq);
-		icq = ioc_lookup_icq(ioc, q);
-		if (!icq)
-			printk(KERN_ERR "cfq: icq link failed!\n");
-	}
-
-	spin_unlock(&ioc->lock);
-	spin_unlock_irq(q->queue_lock);
-	radix_tree_preload_end();
-	return icq;
-}
-
-/**
  * cfq_get_cic - acquire cfq_io_cq and bump refcnt on io_context
  * @cfqd: cfqd to setup cic for
  * @gfp_mask: allocation mask