Merge branch 'for-3.18/drivers' of git://git.kernel.dk/linux-block

Pull block layer driver update from Jens Axboe:
 "This is the block driver pull request for 3.18.  Not a lot in there
  this round, and nothing earth shattering.

   - A round of drbd fixes from the linbit team, and an improvement in
     asender performance.

   - Removal of deprecated (and unused) IRQF_DISABLED flag in rsxx and
     hd from Michael Opdenacker.

   - Disable entropy collection from flash devices by default, from Mike
     Snitzer.

   - A small collection of xen blkfront/back fixes from Roger Pau Monné
     and Vitaly Kuznetsov"

* 'for-3.18/drivers' of git://git.kernel.dk/linux-block:
  block: disable entropy contributions for nonrot devices
  xen, blkfront: factor out flush-related checks from do_blkif_request()
  xen-blkback: fix leak on grant map error path
  xen/blkback: unmap all persistent grants when frontend gets disconnected
  rsxx: Remove deprecated IRQF_DISABLED
  block: hd: remove deprecated IRQF_DISABLED
  drbd: use RB_DECLARE_CALLBACKS() to define augment callbacks
  drbd: compute the end before rb_insert_augmented()
  drbd: Add missing newline in resync progress display in /proc/drbd
  drbd: reduce lock contention in drbd_worker
  drbd: Improve asender performance
  drbd: Get rid of the WORK_PENDING macro
  drbd: Get rid of the __no_warn and __cond_lock macros
  drbd: Avoid inconsistent locking warning
  drbd: Remove superfluous newline from "resync_extents" debugfs entry.
  drbd: Use consistent names for all the bi_end_io callbacks
  drbd: Use better variable names

diff --cc drivers/block/mtip32xx/mtip32xx.c
Simple merge

diff --cc drivers/block/null_blk.c
index ac50a29,b0d94b6..2671a3f
--- 1/drivers/block/null_blk.c
--- 2/drivers/block/null_blk.c
+++ b/drivers/block/null_blk.c
@@@ -521,12 -507,11 +521,13 @@@ static int null_add_dev(void
  
        nullb->q->queuedata = nullb;
        queue_flag_set_unlocked(QUEUE_FLAG_NONROT, nullb->q);
+       queue_flag_clear_unlocked(QUEUE_FLAG_ADD_RANDOM, nullb->q);
  
        disk = nullb->disk = alloc_disk_node(1, home_node);
 -      if (!disk)
 +      if (!disk) {
 +              rv = -ENOMEM;
                goto out_cleanup_blk_queue;
 +      }
  
        mutex_lock(&lock);
        list_add_tail(&nullb->list, &nullb_list);

diff --cc drivers/block/rsxx/core.c
Simple merge

diff --cc drivers/block/xen-blkback/xenbus.c
Simple merge

diff --cc drivers/block/xen-blkfront.c
Simple merge

diff --cc drivers/block/zram/zram_drv.c
Simple merge

diff --cc drivers/mmc/card/queue.c
Simple merge

diff --cc drivers/scsi/sd.c
Simple merge