drm/radeon: fixup RV550 chip family

[sfrench/cifs-2.6.git] / block / cfq-iosched.c

diff --git a/block/cfq-iosched.c b/block/cfq-iosched.c
index ca198e61fa65c555bf936d2d628876313b62dbb1..0f962ecae91fb68345fe1d916791a78e06a2f2e8 100644 (file)
--- a/block/cfq-iosched.c
+++ b/block/cfq-iosched.c
@@ -1145,38 +1145,19 @@ static void cfq_put_queue(struct cfq_queue *cfqq)
 /*
  * Call func for each cic attached to this ioc. Returns number of cic's seen.
  */
-#define CIC_GANG_NR    16
 static unsigned int
 call_for_each_cic(struct io_context *ioc,
                  void (*func)(struct io_context *, struct cfq_io_context *))
 {
-       struct cfq_io_context *cics[CIC_GANG_NR];
-       unsigned long index = 0;
-       unsigned int called = 0;
-       int nr;
+       struct cfq_io_context *cic;
+       struct hlist_node *n;
+       int called = 0;
 
        rcu_read_lock();
-
-       do {
-               int i;
-
-               /*
-                * Perhaps there's a better way - this just gang lookups from
-                * 0 to the end, restarting after each CIC_GANG_NR from the
-                * last key + 1.
-                */
-               nr = radix_tree_gang_lookup(&ioc->radix_root, (void **) cics,
-                                               index, CIC_GANG_NR);
-               if (!nr)
-                       break;
-
-               called += nr;
-               index = 1 + (unsigned long) cics[nr - 1]->key;
-
-               for (i = 0; i < nr; i++)
-                       func(ioc, cics[i]);
-       } while (nr == CIC_GANG_NR);
-
+       hlist_for_each_entry_rcu(cic, n, &ioc->cic_list, cic_list) {
+               func(ioc, cic);
+               called++;
+       }
        rcu_read_unlock();
 
        return called;
@@ -1190,6 +1171,7 @@ static void cic_free_func(struct io_context *ioc, struct cfq_io_context *cic)
 
        spin_lock_irqsave(&ioc->lock, flags);
        radix_tree_delete(&ioc->radix_root, cic->dead_key);
+       hlist_del_rcu(&cic->cic_list);
        spin_unlock_irqrestore(&ioc->lock, flags);
 
        kmem_cache_free(cfq_ioc_pool, cic);
@@ -1280,6 +1262,7 @@ cfq_alloc_io_context(struct cfq_data *cfqd, gfp_t gfp_mask)
        if (cic) {
                cic->last_end_request = jiffies;
                INIT_LIST_HEAD(&cic->queue_list);
+               INIT_HLIST_NODE(&cic->cic_list);
                cic->dtor = cfq_free_io_context;
                cic->exit = cfq_exit_io_context;
                elv_ioc_count_inc(ioc_count);
@@ -1501,6 +1484,7 @@ cfq_drop_dead_cic(struct cfq_data *cfqd, struct io_context *ioc,
                rcu_assign_pointer(ioc->ioc_data, NULL);
 
        radix_tree_delete(&ioc->radix_root, (unsigned long) cfqd);
+       hlist_del_rcu(&cic->cic_list);
        spin_unlock_irqrestore(&ioc->lock, flags);
 
        cfq_cic_free(cic);
@@ -1561,6 +1545,8 @@ static int cfq_cic_link(struct cfq_data *cfqd, struct io_context *ioc,
                spin_lock_irqsave(&ioc->lock, flags);
                ret = radix_tree_insert(&ioc->radix_root,
                                                (unsigned long) cfqd, cic);
+               if (!ret)
+                       hlist_add_head_rcu(&cic->cic_list, &ioc->cic_list);
                spin_unlock_irqrestore(&ioc->lock, flags);
 
                radix_tree_preload_end();