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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2018-11-16 09:31:59 -0600 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2018-11-16 09:31:59 -0600 |
| commit | 59749c2d49bf28df69ac4bcabf1f69b00d3dca59 (patch) | |
| tree | b255e9caf4e731edfb671368d38b72d7e0d9af84 /drivers/scsi | |
| parent | 9b5f361ac4a923bf53ca8c0875509ef68c8958cd (diff) | |
| parent | 8dc765d438f1e42b3e8227b3b09fad7d73f4ec9a (diff) | |
| download | linux-59749c2d49bf28df69ac4bcabf1f69b00d3dca59.tar.bz2 | |
Merge tag 'for-linus-20181115' of git://git.kernel.dk/linux-block
Pull block fixes from Jens Axboe:
- Discard loop fix, caused by integer overflow (Dave)
- Blacklist of Samsung drive that hangs with power management (Diego)
- Copy bio priority when cloning it (Hannes)
- Fix race condition exposed in floppy (me)
- Fix SCSI queue cleanup regression. While elusive, it caused oopses in
queue running (Ming)
- Fix bad string copy in kyber tracing (Omar)
* tag 'for-linus-20181115' of git://git.kernel.dk/linux-block:
SCSI: fix queue cleanup race before queue initialization is done
block: fix 32 bit overflow in __blkdev_issue_discard()
libata: blacklist SAMSUNG MZ7TD256HAFV-000L9 SSD
block: copy ioprio in __bio_clone_fast() and bounce
kyber: fix wrong strlcpy() size in trace_kyber_latency()
floppy: fix race condition in __floppy_read_block_0()
Diffstat (limited to 'drivers/scsi')
| -rw-r--r-- | drivers/scsi/scsi_lib.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c index c7fccbb8f554..fa6e0c3b3aa6 100644 --- a/drivers/scsi/scsi_lib.c +++ b/drivers/scsi/scsi_lib.c @@ -697,6 +697,12 @@ static bool scsi_end_request(struct request *req, blk_status_t error, */ scsi_mq_uninit_cmd(cmd); + /* + * queue is still alive, so grab the ref for preventing it + * from being cleaned up during running queue. + */ + percpu_ref_get(&q->q_usage_counter); + __blk_mq_end_request(req, error); if (scsi_target(sdev)->single_lun || @@ -704,6 +710,8 @@ static bool scsi_end_request(struct request *req, blk_status_t error, kblockd_schedule_work(&sdev->requeue_work); else blk_mq_run_hw_queues(q, true); + + percpu_ref_put(&q->q_usage_counter); } else { unsigned long flags; |