mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-11-24 12:44:11 +08:00
Revert "block: Fix a lockdep complaint triggered by request queue flushing"
This reverts commit b3c6a59975
.
Now we can avoid nvme-loop lockdep warning of 'lockdep possible recursive locking'
by nvme-loop's lock class, no need to apply dynamically allocated lock class key,
so revert commit b3c6a5997541("block: Fix a lockdep complaint triggered by request
queue flushing").
This way fixes horrible SCSI probe delay issue on megaraid_sas, and it is reported
the whole probe may take more than half an hour.
Tested-by: Kashyap Desai <kashyap.desai@broadcom.com>
Reported-by: Qian Cai <cai@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Cc: Sumit Saxena <sumit.saxena@broadcom.com>
Cc: John Garry <john.garry@huawei.com>
Cc: Kashyap Desai <kashyap.desai@broadcom.com>
Cc: Bart Van Assche <bvanassche@acm.org>
Cc: Hannes Reinecke <hare@suse.de>
Signed-off-by: Ming Lei <ming.lei@redhat.com>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
parent
88c9979334
commit
7aa390ec2d
@ -69,7 +69,6 @@
|
||||
#include <linux/blkdev.h>
|
||||
#include <linux/gfp.h>
|
||||
#include <linux/blk-mq.h>
|
||||
#include <linux/lockdep.h>
|
||||
|
||||
#include "blk.h"
|
||||
#include "blk-mq.h"
|
||||
@ -469,9 +468,6 @@ struct blk_flush_queue *blk_alloc_flush_queue(int node, int cmd_size,
|
||||
INIT_LIST_HEAD(&fq->flush_queue[1]);
|
||||
INIT_LIST_HEAD(&fq->flush_data_in_flight);
|
||||
|
||||
lockdep_register_key(&fq->key);
|
||||
lockdep_set_class(&fq->mq_flush_lock, &fq->key);
|
||||
|
||||
return fq;
|
||||
|
||||
fail_rq:
|
||||
@ -486,7 +482,6 @@ void blk_free_flush_queue(struct blk_flush_queue *fq)
|
||||
if (!fq)
|
||||
return;
|
||||
|
||||
lockdep_unregister_key(&fq->key);
|
||||
kfree(fq->flush_rq);
|
||||
kfree(fq);
|
||||
}
|
||||
|
@ -25,7 +25,6 @@ struct blk_flush_queue {
|
||||
struct list_head flush_data_in_flight;
|
||||
struct request *flush_rq;
|
||||
|
||||
struct lock_class_key key;
|
||||
spinlock_t mq_flush_lock;
|
||||
};
|
||||
|
||||
|
Loading…
Reference in New Issue
Block a user