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-rw-r--r--block/blk-core.c20
1 files changed, 14 insertions, 6 deletions
diff --git a/block/blk-core.c b/block/blk-core.c
index 3bc5579..f84cce4 100644
--- a/block/blk-core.c
+++ b/block/blk-core.c
@@ -467,6 +467,9 @@ static int blk_init_free_list(struct request_queue *q)
{
struct request_list *rl = &q->rq;
+ if (unlikely(rl->rq_pool))
+ return 0;
+
rl->count[BLK_RW_SYNC] = rl->count[BLK_RW_ASYNC] = 0;
rl->starved[BLK_RW_SYNC] = rl->starved[BLK_RW_ASYNC] = 0;
rl->elvpriv = 0;
@@ -570,9 +573,17 @@ EXPORT_SYMBOL(blk_init_queue);
struct request_queue *
blk_init_queue_node(request_fn_proc *rfn, spinlock_t *lock, int node_id)
{
- struct request_queue *q = blk_alloc_queue_node(GFP_KERNEL, node_id);
+ struct request_queue *uninit_q, *q;
+
+ uninit_q = blk_alloc_queue_node(GFP_KERNEL, node_id);
+ if (!uninit_q)
+ return NULL;
+
+ q = blk_init_allocated_queue_node(uninit_q, rfn, lock, node_id);
+ if (!q)
+ blk_cleanup_queue(uninit_q);
- return blk_init_allocated_queue_node(q, rfn, lock, node_id);
+ return q;
}
EXPORT_SYMBOL(blk_init_queue_node);
@@ -592,10 +603,8 @@ blk_init_allocated_queue_node(struct request_queue *q, request_fn_proc *rfn,
return NULL;
q->node = node_id;
- if (blk_init_free_list(q)) {
- kmem_cache_free(blk_requestq_cachep, q);
+ if (blk_init_free_list(q))
return NULL;
- }
q->request_fn = rfn;
q->prep_rq_fn = NULL;
@@ -618,7 +627,6 @@ blk_init_allocated_queue_node(struct request_queue *q, request_fn_proc *rfn,
return q;
}
- blk_put_queue(q);
return NULL;
}
EXPORT_SYMBOL(blk_init_allocated_queue_node);
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