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Merge branch 'for-linus' of git://git.kernel.dk/linux-block

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Pull block fixes from Jens Axboe:
 "Three small fixes that have been picked up the last few weeks.
  Specifically:

   - Fix a memory corruption issue in NVMe with malignant user
     constructed request.  From Christoph.

   - Kill (now) unused blk_queue_bio(), dm was changed to not need this
     anymore.  From Mike Snitzer.

   - Always use blk_schedule_flush_plug() from the io_schedule() path
     when flushing a plug, fixing a !TASK_RUNNING warning with md.  From
     Shaohua"

* 'for-linus' of git://git.kernel.dk/linux-block:
  sched: always use blk_schedule_flush_plug in io_schedule_out
  nvme: fix kernel memory corruption with short INQUIRY buffers
  block: remove export for blk_queue_bio
This commit is contained in:
Linus Torvalds 2015-05-22 15:15:30 -07:00
commit 1c8df7bd48
4 changed files with 6 additions and 9 deletions
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5
block/blk-core.c
View File

@ -734,6 +734,8 @@ blk_init_queue_node(request_fn_proc *rfn, spinlock_t *lock, int node_id)
}
EXPORT_SYMBOL(blk_init_queue_node);
static void blk_queue_bio(struct request_queue *q, struct bio *bio);
struct request_queue *
blk_init_allocated_queue(struct request_queue *q, request_fn_proc *rfn,
spinlock_t *lock)
@ -1578,7 +1580,7 @@ void init_request_from_bio(struct request *req, struct bio *bio)
blk_rq_bio_prep(req->q, req, bio);
}
void blk_queue_bio(struct request_queue *q, struct bio *bio)
static void blk_queue_bio(struct request_queue *q, struct bio *bio)
{
const bool sync = !!(bio->bi_rw & REQ_SYNC);
struct blk_plug *plug;
@ -1686,7 +1688,6 @@ out_unlock:
spin_unlock_irq(q->queue_lock);
}
}
EXPORT_SYMBOL_GPL(blk_queue_bio); /* for device mapper only */
/*
* If bio->bi_dev is a partition, remap the location

3
drivers/block/nvme-scsi.c
View File

@ -2257,7 +2257,8 @@ static int nvme_trans_inquiry(struct nvme_ns *ns, struct sg_io_hdr *hdr,
page_code = GET_INQ_PAGE_CODE(cmd);
alloc_len = GET_INQ_ALLOC_LENGTH(cmd);
inq_response = kmalloc(alloc_len, GFP_KERNEL);
inq_response = kmalloc(max(alloc_len, STANDARD_INQUIRY_LENGTH),
GFP_KERNEL);
if (inq_response == NULL) {
res = -ENOMEM;
goto out_mem;

2
include/linux/blkdev.h
View File

@ -821,8 +821,6 @@ extern int scsi_cmd_ioctl(struct request_queue *, struct gendisk *, fmode_t,
extern int sg_scsi_ioctl(struct request_queue *, struct gendisk *, fmode_t,
struct scsi_ioctl_command __user *);
extern void blk_queue_bio(struct request_queue *q, struct bio *bio);
/*
* A queue has just exitted congestion. Note this in the global counter of
* congested queues, and wake up anyone who was waiting for requests to be

5
kernel/sched/core.c
View File

@ -4389,10 +4389,7 @@ long __sched io_schedule_timeout(long timeout)
long ret;
current->in_iowait = 1;
if (old_iowait)
blk_schedule_flush_plug(current);
else
blk_flush_plug(current);
blk_schedule_flush_plug(current);
delayacct_blkio_start();
rq = raw_rq();