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linux-next/drivers/lightnvm/gennvm.h
Matias Bjørling 48add0f5a6 gennvm: Generic NVM manager
The implementation for Open-Channel SSDs is divided into media
management and targets. This patch implements a generic media manager
for open-channel SSDs. After a media manager has been initialized,
single or multiple targets can be instantiated with the media managed as
the backend.

Signed-off-by: Matias Bjørling <m@bjorling.me>
Signed-off-by: Jens Axboe <axboe@fb.com>
2015-10-29 16:21:42 +09:00

47 lines
1.2 KiB
C

/*
* 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_ */