diff options
Diffstat (limited to 'block')
| -rw-r--r-- | block/blk-mq.c | 24 |
1 files changed, 17 insertions, 7 deletions
diff --git a/block/blk-mq.c b/block/blk-mq.c index 7528678ef41f..ba09cda49953 100644 --- a/block/blk-mq.c +++ b/block/blk-mq.c @@ -2761,6 +2761,23 @@ static void blk_mq_realloc_hw_ctxs(struct blk_mq_tag_set *set, int i, j, end; struct blk_mq_hw_ctx **hctxs = q->queue_hw_ctx; + if (q->nr_hw_queues < set->nr_hw_queues) { + struct blk_mq_hw_ctx **new_hctxs; + + new_hctxs = kcalloc_node(set->nr_hw_queues, + sizeof(*new_hctxs), GFP_KERNEL, + set->numa_node); + if (!new_hctxs) + return; + if (hctxs) + memcpy(new_hctxs, hctxs, q->nr_hw_queues * + sizeof(*hctxs)); + q->queue_hw_ctx = new_hctxs; + q->nr_hw_queues = set->nr_hw_queues; + kfree(hctxs); + hctxs = new_hctxs; + } + /* protect against switching io scheduler */ mutex_lock(&q->sysfs_lock); for (i = 0; i < set->nr_hw_queues; i++) { @@ -2848,12 +2865,6 @@ struct request_queue *blk_mq_init_allocated_queue(struct blk_mq_tag_set *set, /* init q->mq_kobj and sw queues' kobjects */ blk_mq_sysfs_init(q); - q->queue_hw_ctx = kcalloc_node(nr_hw_queues(set), - sizeof(*(q->queue_hw_ctx)), GFP_KERNEL, - set->numa_node); - if (!q->queue_hw_ctx) - goto err_sys_init; - INIT_LIST_HEAD(&q->unused_hctx_list); spin_lock_init(&q->unused_hctx_lock); @@ -2901,7 +2912,6 @@ struct request_queue *blk_mq_init_allocated_queue(struct blk_mq_tag_set *set, err_hctxs: kfree(q->queue_hw_ctx); q->nr_hw_queues = 0; -err_sys_init: blk_mq_sysfs_deinit(q); err_poll: blk_stat_free_callback(q->poll_cb); |