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Diffstat (limited to 'block/blk-core.c')
-rw-r--r--block/blk-core.c12
1 files changed, 12 insertions, 0 deletions
diff --git a/block/blk-core.c b/block/blk-core.c
index 5e81dcf4690a..a4362849059a 100644
--- a/block/blk-core.c
+++ b/block/blk-core.c
@@ -612,6 +612,9 @@ void blk_set_queue_dying(struct request_queue *q)
}
spin_unlock_irq(q->queue_lock);
}
+
+ /* Make blk_queue_enter() reexamine the DYING flag. */
+ wake_up_all(&q->mq_freeze_wq);
}
EXPORT_SYMBOL_GPL(blk_set_queue_dying);
@@ -1398,16 +1401,22 @@ static struct request *blk_old_get_request(struct request_queue *q,
unsigned int op, gfp_t gfp_mask)
{
struct request *rq;
+ int ret = 0;
WARN_ON_ONCE(q->mq_ops);
/* create ioc upfront */
create_io_context(gfp_mask, q->node);
+ ret = blk_queue_enter(q, !(gfp_mask & __GFP_DIRECT_RECLAIM) ||
+ (op & REQ_NOWAIT));
+ if (ret)
+ return ERR_PTR(ret);
spin_lock_irq(q->queue_lock);
rq = get_request(q, op, NULL, gfp_mask);
if (IS_ERR(rq)) {
spin_unlock_irq(q->queue_lock);
+ blk_queue_exit(q);
return rq;
}
@@ -1579,6 +1588,7 @@ void __blk_put_request(struct request_queue *q, struct request *req)
blk_free_request(rl, req);
freed_request(rl, sync, rq_flags);
blk_put_rl(rl);
+ blk_queue_exit(q);
}
}
EXPORT_SYMBOL_GPL(__blk_put_request);
@@ -1860,8 +1870,10 @@ get_rq:
* Grab a free request. This is might sleep but can not fail.
* Returns with the queue unlocked.
*/
+ blk_queue_enter_live(q);
req = get_request(q, bio->bi_opf, bio, GFP_NOIO);
if (IS_ERR(req)) {
+ blk_queue_exit(q);
__wbt_done(q->rq_wb, wb_acct);
if (PTR_ERR(req) == -ENOMEM)
bio->bi_status = BLK_STS_RESOURCE;