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Merge branch 'for-4.5/lightnvm' of git://git.kernel.dk/linux-block

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Pull lightnvm fixes and updates from Jens Axboe:
 "This should have been part of the drivers branch, but it arrived a bit
  late and wasn't based on the official core block driver branch.  So
  they got a small scolding, but got a pass since it's still new.  Hence
  it's in a separate branch.

  This is mostly pure fixes, contained to lightnvm/, and minor feature
  additions"

* 'for-4.5/lightnvm' of git://git.kernel.dk/linux-block: (26 commits)
  lightnvm: ensure that nvm_dev_ops can be used without CONFIG_NVM
  lightnvm: introduce factory reset
  lightnvm: use system block for mm initialization
  lightnvm: introduce ioctl to initialize device
  lightnvm: core on-disk initialization
  lightnvm: introduce mlc lower page table mappings
  lightnvm: add mccap support
  lightnvm: manage open and closed blocks separately
  lightnvm: fix missing grown bad block type
  lightnvm: reference rrpc lun in rrpc block
  lightnvm: introduce nvm_submit_ppa
  lightnvm: move rq->error to nvm_rq->error
  lightnvm: support multiple ppas in nvm_erase_ppa
  lightnvm: move the pages per block check out of the loop
  lightnvm: sectors first in ppa list
  lightnvm: fix locking and mempool in rrpc_lun_gc
  lightnvm: put block back to gc list on its reclaim fail
  lightnvm: check bi_error in gc
  lightnvm: return the get_bb_tbl return value
  lightnvm: refactor end_io functions for sync
  ...
This commit is contained in:
Linus Torvalds
2016-01-21 19:01:55 -08:00
parent 641203549a a7fd9a4f3e
commit 0a13daedf7
10 changed files with 1488 additions and 238 deletions
Download Patch File Download Diff File Expand all files Collapse all files

31
include/uapi/linux/lightnvm.h
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@@ -33,6 +33,7 @@
#define NVM_TTYPE_NAME_MAX 48
#define NVM_TTYPE_MAX 63
#define NVM_MMTYPE_LEN 8
#define NVM_CTRL_FILE "/dev/lightnvm/control"
@@ -100,6 +101,26 @@ struct nvm_ioctl_remove {
__u32 flags;
};
struct nvm_ioctl_dev_init {
char dev[DISK_NAME_LEN]; /* open-channel SSD device */
char mmtype[NVM_MMTYPE_LEN]; /* register to media manager */
__u32 flags;
};
enum {
NVM_FACTORY_ERASE_ONLY_USER = 1 << 0, /* erase only blocks used as
* host blks or grown blks */
NVM_FACTORY_RESET_HOST_BLKS = 1 << 1, /* remove host blk marks */
NVM_FACTORY_RESET_GRWN_BBLKS = 1 << 2, /* remove grown blk marks */
NVM_FACTORY_NR_BITS = 1 << 3, /* stops here */
};
struct nvm_ioctl_dev_factory {
char dev[DISK_NAME_LEN];
__u32 flags;
};
/* The ioctl type, 'L', 0x20 - 0x2F documented in ioctl-number.txt */
enum {
@@ -110,6 +131,12 @@ enum {
/* device level cmds */
NVM_DEV_CREATE_CMD,
NVM_DEV_REMOVE_CMD,
/* Init a device to support LightNVM media managers */
NVM_DEV_INIT_CMD,
/* Factory reset device */
NVM_DEV_FACTORY_CMD,
};
#define NVM_IOCTL 'L' /* 0x4c */
@@ -122,6 +149,10 @@ enum {
struct nvm_ioctl_create)
#define NVM_DEV_REMOVE _IOW(NVM_IOCTL, NVM_DEV_REMOVE_CMD, \
struct nvm_ioctl_remove)
#define NVM_DEV_INIT _IOW(NVM_IOCTL, NVM_DEV_INIT_CMD, \
struct nvm_ioctl_dev_init)
#define NVM_DEV_FACTORY _IOW(NVM_IOCTL, NVM_DEV_FACTORY_CMD, \
struct nvm_ioctl_dev_factory)
#define NVM_VERSION_MAJOR 1
#define NVM_VERSION_MINOR 0