[BLOCK] increase size of disk stat counters

[mirror_ubuntu-zesty-kernel.git] / block / ll_rw_blk.c

diff --git a/block/ll_rw_blk.c b/block/ll_rw_blk.c
index 062067fa7ead0340ee3f5da91f82af80ec097e82..7fc903b5f3cd1c765acbc25e45886a80e1590e5b 100644 (file)
--- a/block/ll_rw_blk.c
+++ b/block/ll_rw_blk.c
@@ -906,17 +906,15 @@ init_tag_map(request_queue_t *q, struct blk_queue_tag *tags, int depth)
                                __FUNCTION__, depth);
        }
 
-       tag_index = kmalloc(depth * sizeof(struct request *), GFP_ATOMIC);
+       tag_index = kzalloc(depth * sizeof(struct request *), GFP_ATOMIC);
        if (!tag_index)
                goto fail;
 
        nr_ulongs = ALIGN(depth, BITS_PER_LONG) / BITS_PER_LONG;
-       tag_map = kmalloc(nr_ulongs * sizeof(unsigned long), GFP_ATOMIC);
+       tag_map = kzalloc(nr_ulongs * sizeof(unsigned long), GFP_ATOMIC);
        if (!tag_map)
                goto fail;
 
-       memset(tag_index, 0, depth * sizeof(struct request *));
-       memset(tag_map, 0, nr_ulongs * sizeof(unsigned long));
        tags->real_max_depth = depth;
        tags->max_depth = depth;
        tags->tag_index = tag_index;
@@ -2479,10 +2477,12 @@ void blk_execute_rq_nowait(request_queue_t *q, struct gendisk *bd_disk,
        rq->rq_disk = bd_disk;
        rq->flags |= REQ_NOMERGE;
        rq->end_io = done;
-       elv_add_request(q, rq, where, 1);
-       generic_unplug_device(q);
+       WARN_ON(irqs_disabled());
+       spin_lock_irq(q->queue_lock);
+       __elv_add_request(q, rq, where, 1);
+       __generic_unplug_device(q);
+       spin_unlock_irq(q->queue_lock);
 }
-
 EXPORT_SYMBOL_GPL(blk_execute_rq_nowait);
 
 /**