Merge branch 'for-4.6/drivers' of git://git.kernel.dk/linux-block

Pull block driver updates from Jens Axboe:
 "This is the block driver pull request for this merge window.  It sits
  on top of for-4.6/core, that was just sent out.

  This contains:

   - A set of fixes for lightnvm.  One from Alan, fixing an overflow,
     and the rest from the usual suspects, Javier and Matias.

   - A set of fixes for nbd from Markus and Dan, and a fixup from Arnd
     for correct usage of the signed 64-bit divider.

   - A set of bug fixes for the Micron mtip32xx, from Asai.

   - A fix for the brd discard handling from Bart.

   - Update the maintainers entry for cciss, since that hardware has
     transferred ownership.

   - Three bug fixes for bcache from Eric Wheeler.

   - Set of fixes for xen-blk{back,front} from Jan and Konrad.

   - Removal of the cpqarray driver.  It has been disabled in Kconfig
     since 2013, and we were initially scheduled to remove it in 3.15.

   - Various updates and fixes for NVMe, with the most important being:

        - Removal of the per-device NVMe thread, replacing that with a
          watchdog timer instead. From Christoph.

        - Exposing the namespace WWID through sysfs, from Keith.

        - Set of cleanups from Ming Lin.

        - Logging the controller device name instead of the underlying
          PCI device name, from Sagi.

        - And a bunch of fixes and optimizations from the usual suspects
          in this area"

* 'for-4.6/drivers' of git://git.kernel.dk/linux-block: (49 commits)
  NVMe: Expose ns wwid through single sysfs entry
  drivers:block: cpqarray clean up
  brd: Fix discard request processing
  cpqarray: remove it from the kernel
  cciss: update MAINTAINERS
  NVMe: Remove unused sq_head read in completion path
  bcache: fix cache_set_flush() NULL pointer dereference on OOM
  bcache: cleaned up error handling around register_cache()
  bcache: fix race of writeback thread starting before complete initialization
  NVMe: Create discard zero quirk white list
  nbd: use correct div_s64 helper
  mtip32xx: remove unneeded variable in mtip_cmd_timeout()
  lightnvm: generalize rrpc ppa calculations
  lightnvm: remove struct nvm_dev->total_blocks
  lightnvm: rename ->nr_pages to ->nr_sects
  lightnvm: update closed list outside of intr context
  xen/blback: Fit the important information of the thread in 17 characters
  lightnvm: fold get bb tbl when using dual/quad plane mode
  lightnvm: fix up nonsensical configure overrun checking
  xen-blkback: advertise indirect segment support earlier
  ...

drivers/lightnvm/rrpc.h

@@ -104,7 +104,7 @@ struct rrpc {
 	struct rrpc_lun *luns;
 
 	/* calculated values */
-	unsigned long long nr_pages;
+	unsigned long long nr_sects;
 	unsigned long total_blocks;
 
 	/* Write strategy variables. Move these into each for structure for each
@@ -156,6 +156,15 @@ struct rrpc_rev_addr {
 	u64 addr;
 };
 
+static inline struct rrpc_block *rrpc_get_rblk(struct rrpc_lun *rlun,
+								int blk_id)
+{
+	struct rrpc *rrpc = rlun->rrpc;
+	int lun_blk = blk_id % rrpc->dev->blks_per_lun;
+
+	return &rlun->blocks[lun_blk];
+}
+
 static inline sector_t rrpc_get_laddr(struct bio *bio)
 {
 	return bio->bi_iter.bi_sector / NR_PHY_IN_LOG;
@@ -206,7 +215,7 @@ static inline int rrpc_lock_laddr(struct rrpc *rrpc, sector_t laddr,
 				 unsigned pages,
 				 struct rrpc_inflight_rq *r)
 {
-	BUG_ON((laddr + pages) > rrpc->nr_pages);
+	BUG_ON((laddr + pages) > rrpc->nr_sects);
 
 	return __rrpc_lock_laddr(rrpc, laddr, pages, r);
 }
@@ -243,7 +252,7 @@ static inline void rrpc_unlock_rq(struct rrpc *rrpc, struct nvm_rq *rqd)
 	struct rrpc_inflight_rq *r = rrpc_get_inflight_rq(rqd);
 	uint8_t pages = rqd->nr_pages;
 
-	BUG_ON((r->l_start + pages) > rrpc->nr_pages);
+	BUG_ON((r->l_start + pages) > rrpc->nr_sects);
 
 	rrpc_unlock_laddr(rrpc, r);
 }