diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2010-08-12 19:16:46 +0200 |
---|---|---|
committer | Linus Torvalds <torvalds@linux-foundation.org> | 2010-08-12 19:16:46 +0200 |
commit | 8357422d4bf33bc2c35884d4016c3fc9efbbc1d2 (patch) | |
tree | 5779dfe36de828d3ef2dacfda48b7961cdc44525 /include | |
parent | Merge branch 'hwpoison' of git://git.kernel.org/pub/scm/linux/kernel/git/ak/l... (diff) | |
parent | dm mpath: support discard (diff) | |
download | linux-8357422d4bf33bc2c35884d4016c3fc9efbbc1d2.tar.xz linux-8357422d4bf33bc2c35884d4016c3fc9efbbc1d2.zip |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/agk/linux-2.6-dm
* git://git.kernel.org/pub/scm/linux/kernel/git/agk/linux-2.6-dm: (33 commits)
dm mpath: support discard
dm stripe: support discards
dm: split discard requests on target boundaries
dm stripe: optimize sector division
dm stripe: move sector translation to a function
dm: error return error for discards
dm delay: support discard
dm: zero silently drop discards
dm: use dm_target_offset macro
dm: factor out max_io_len_target_boundary
dm: use common __issue_target_request for flush and discard support
dm: linear support discard
dm crypt: simplify crypt_ctr
dm crypt: simplify crypt_config destruction logic
dm: allow autoloading of dm mod
dm: rename map_info flush_request to target_request_nr
dm ioctl: refactor dm_table_complete
dm snapshot: implement merge
dm: do not initialise full request queue when bio based
dm ioctl: make bio or request based device type immutable
...
Diffstat (limited to 'include')
-rw-r--r-- | include/linux/device-mapper.h | 16 | ||||
-rw-r--r-- | include/linux/dm-ioctl.h | 5 | ||||
-rw-r--r-- | include/linux/miscdevice.h | 1 |
3 files changed, 18 insertions, 4 deletions
diff --git a/include/linux/device-mapper.h b/include/linux/device-mapper.h index 1381cd97b4ed..2970022faa63 100644 --- a/include/linux/device-mapper.h +++ b/include/linux/device-mapper.h @@ -22,7 +22,7 @@ typedef enum { STATUSTYPE_INFO, STATUSTYPE_TABLE } status_type_t; union map_info { void *ptr; unsigned long long ll; - unsigned flush_request; + unsigned target_request_nr; }; /* @@ -174,12 +174,18 @@ struct dm_target { * A number of zero-length barrier requests that will be submitted * to the target for the purpose of flushing cache. * - * The request number will be placed in union map_info->flush_request. + * The request number will be placed in union map_info->target_request_nr. * It is a responsibility of the target driver to remap these requests * to the real underlying devices. */ unsigned num_flush_requests; + /* + * The number of discard requests that will be submitted to the + * target. map_info->request_nr is used just like num_flush_requests. + */ + unsigned num_discard_requests; + /* target specific data */ void *private; @@ -392,6 +398,12 @@ void *dm_vcalloc(unsigned long nmemb, unsigned long elem_size); #define dm_array_too_big(fixed, obj, num) \ ((num) > (UINT_MAX - (fixed)) / (obj)) +/* + * Sector offset taken relative to the start of the target instead of + * relative to the start of the device. + */ +#define dm_target_offset(ti, sector) ((sector) - (ti)->begin) + static inline sector_t to_sector(unsigned long n) { return (n >> SECTOR_SHIFT); diff --git a/include/linux/dm-ioctl.h b/include/linux/dm-ioctl.h index 2c445e113790..49eab360d5d4 100644 --- a/include/linux/dm-ioctl.h +++ b/include/linux/dm-ioctl.h @@ -11,6 +11,7 @@ #include <linux/types.h> #define DM_DIR "mapper" /* Slashes not supported */ +#define DM_CONTROL_NODE "control" #define DM_MAX_TYPE_NAME 16 #define DM_NAME_LEN 128 #define DM_UUID_LEN 129 @@ -266,9 +267,9 @@ enum { #define DM_DEV_SET_GEOMETRY _IOWR(DM_IOCTL, DM_DEV_SET_GEOMETRY_CMD, struct dm_ioctl) #define DM_VERSION_MAJOR 4 -#define DM_VERSION_MINOR 17 +#define DM_VERSION_MINOR 18 #define DM_VERSION_PATCHLEVEL 0 -#define DM_VERSION_EXTRA "-ioctl (2010-03-05)" +#define DM_VERSION_EXTRA "-ioctl (2010-06-29)" /* Status bits */ #define DM_READONLY_FLAG (1 << 0) /* In/Out */ diff --git a/include/linux/miscdevice.h b/include/linux/miscdevice.h index f6c9b7dcb9fd..bafffc737903 100644 --- a/include/linux/miscdevice.h +++ b/include/linux/miscdevice.h @@ -38,6 +38,7 @@ #define KVM_MINOR 232 #define BTRFS_MINOR 234 #define AUTOFS_MINOR 235 +#define MAPPER_CTRL_MINOR 236 #define MISC_DYNAMIC_MINOR 255 struct device; |