Merge branch 'for-4.4/lightnvm' of git://git.kernel.dk/linux-block

Pull lightnvm support from Jens Axboe:
 "This adds support for lightnvm, and adds support to NVMe as well.
  This is pretty exciting, in that it enables new and interesting use
  cases for compatible flash devices.  There's a LWN writeup about an
  earlier posting here:

      https://lwn.net/Articles/641247/

  This has been underway for a while, and should be ready for merging at
  this point"

* 'for-4.4/lightnvm' of git://git.kernel.dk/linux-block:
  nvme: lightnvm: clean up a data type
  lightnvm: refactor phys addrs type to u64
  nvme: LightNVM support
  rrpc: Round-robin sector target with cost-based gc
  gennvm: Generic NVM manager
  lightnvm: Support for Open-Channel SSDs

1 files changed, 46 insertions, 0 deletions

diff --git a/drivers/lightnvm/gennvm.h b/drivers/lightnvm/gennvm.h
new file mode 100644
index 000000000000..d23bd3501ddc
--- /dev/null
+++ b/drivers/lightnvm/gennvm.h
@@ -0,0 +1,46 @@
+/*
+ * Copyright: Matias Bjorling <mb@bjorling.me>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ */
+
+#ifndef GENNVM_H_
+#define GENNVM_H_
+
+#include <linux/module.h>
+#include <linux/vmalloc.h>
+
+#include <linux/lightnvm.h>
+
+struct gen_lun {
+	struct nvm_lun vlun;
+
+	int reserved_blocks;
+	/* lun block lists */
+	struct list_head used_list;	/* In-use blocks */
+	struct list_head free_list;	/* Not used blocks i.e. released
+					 * and ready for use
+					 */
+	struct list_head bb_list;	/* Bad blocks. Mutually exclusive with
+					 * free_list and used_list
+					 */
+};
+
+struct gen_nvm {
+	int nr_luns;
+	struct gen_lun *luns;
+};
+
+#define gennvm_for_each_lun(bm, lun, i) \
+		for ((i) = 0, lun = &(bm)->luns[0]; \
+			(i) < (bm)->nr_luns; (i)++, lun = &(bm)->luns[(i)])
+
+#endif /* GENNVM_H_ */