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

Pull block layer fixes from Jens Axboe:
 "A small collection of fixes for the current kernel.  This contains:

   - Two error handling fixes from Jan Kara.  One for null_blk on
     failure to add a device, and the other for the block/scsi_ioctl
     SCSI_IOCTL_SEND_COMMAND fixing up the error jump point.

   - A commit added in the merge window for the bio integrity bits
     unfortunately disabled merging for all requests if
     CONFIG_BLK_DEV_INTEGRITY wasn't set.  Reverse the logic, so that
     integrity checking wont disallow merges when not enabled.

   - A fix from Ming Lei for merging and generating too many segments.
     This caused a BUG in virtio_blk.

   - Two error handling printk() fixups from Robert Elliott, improving
     the information given when we rate limit.

   - Error handling fixup on elevator_init() failure from Sudip
     Mukherjee.

   - A fix from Tony Battersby, fixing up a memory leak in the
     scatterlist handling with scsi-mq"

* 'for-linus' of git://git.kernel.dk/linux-block:
  block: Fix merge logic when CONFIG_BLK_DEV_INTEGRITY is not defined
  lib/scatterlist: fix memory leak with scsi-mq
  block: fix wrong error return in elevator_init()
  scsi: Fix error handling in SCSI_IOCTL_SEND_COMMAND
  null_blk: Cleanup error recovery in null_add_dev()
  blk-merge: recaculate segment if it isn't less than max segments
  fs: clarify rate limit suppressed buffer I/O errors
  fs: merge I/O error prints into one line