diff options
Diffstat (limited to 'include/linux/raid/md_k.h')
| -rw-r--r-- | include/linux/raid/md_k.h | 80 | 
1 files changed, 25 insertions, 55 deletions
| diff --git a/include/linux/raid/md_k.h b/include/linux/raid/md_k.h index 46629a275ba9..617b9506c760 100644 --- a/include/linux/raid/md_k.h +++ b/include/linux/raid/md_k.h | |||
| @@ -18,62 +18,19 @@ | |||
| 18 | /* and dm-bio-list.h is not under include/linux because.... ??? */ | 18 | /* and dm-bio-list.h is not under include/linux because.... ??? */ | 
| 19 | #include "../../../drivers/md/dm-bio-list.h" | 19 | #include "../../../drivers/md/dm-bio-list.h" | 
| 20 | 20 | ||
| 21 | #define MD_RESERVED 0UL | ||
| 22 | #define LINEAR 1UL | ||
| 23 | #define RAID0 2UL | ||
| 24 | #define RAID1 3UL | ||
| 25 | #define RAID5 4UL | ||
| 26 | #define TRANSLUCENT 5UL | ||
| 27 | #define HSM 6UL | ||
| 28 | #define MULTIPATH 7UL | ||
| 29 | #define RAID6 8UL | ||
| 30 | #define RAID10 9UL | ||
| 31 | #define FAULTY 10UL | ||
| 32 | #define MAX_PERSONALITY 11UL | ||
| 33 | |||
| 34 | #define LEVEL_MULTIPATH (-4) | 21 | #define LEVEL_MULTIPATH (-4) | 
| 35 | #define LEVEL_LINEAR (-1) | 22 | #define LEVEL_LINEAR (-1) | 
| 36 | #define LEVEL_FAULTY (-5) | 23 | #define LEVEL_FAULTY (-5) | 
| 37 | 24 | ||
| 25 | /* we need a value for 'no level specified' and 0 | ||
| 26 | * means 'raid0', so we need something else. This is | ||
| 27 | * for internal use only | ||
| 28 | */ | ||
| 29 | #define LEVEL_NONE (-1000000) | ||
| 30 | |||
| 38 | #define MaxSector (~(sector_t)0) | 31 | #define MaxSector (~(sector_t)0) | 
| 39 | #define MD_THREAD_NAME_MAX 14 | 32 | #define MD_THREAD_NAME_MAX 14 | 
| 40 | 33 | ||
| 41 | static inline int pers_to_level (int pers) | ||
| 42 | { | ||
| 43 | switch (pers) { | ||
| 44 | case FAULTY: return LEVEL_FAULTY; | ||
| 45 | case MULTIPATH: return LEVEL_MULTIPATH; | ||
| 46 | case HSM: return -3; | ||
| 47 | case TRANSLUCENT: return -2; | ||
| 48 | case LINEAR: return LEVEL_LINEAR; | ||
| 49 | case RAID0: return 0; | ||
| 50 | case RAID1: return 1; | ||
| 51 | case RAID5: return 5; | ||
| 52 | case RAID6: return 6; | ||
| 53 | case RAID10: return 10; | ||
| 54 | } | ||
| 55 | BUG(); | ||
| 56 | return MD_RESERVED; | ||
| 57 | } | ||
| 58 | |||
| 59 | static inline int level_to_pers (int level) | ||
| 60 | { | ||
| 61 | switch (level) { | ||
| 62 | case LEVEL_FAULTY: return FAULTY; | ||
| 63 | case LEVEL_MULTIPATH: return MULTIPATH; | ||
| 64 | case -3: return HSM; | ||
| 65 | case -2: return TRANSLUCENT; | ||
| 66 | case LEVEL_LINEAR: return LINEAR; | ||
| 67 | case 0: return RAID0; | ||
| 68 | case 1: return RAID1; | ||
| 69 | case 4: | ||
| 70 | case 5: return RAID5; | ||
| 71 | case 6: return RAID6; | ||
| 72 | case 10: return RAID10; | ||
| 73 | } | ||
| 74 | return MD_RESERVED; | ||
| 75 | } | ||
| 76 | |||
| 77 | typedef struct mddev_s mddev_t; | 34 | typedef struct mddev_s mddev_t; | 
| 78 | typedef struct mdk_rdev_s mdk_rdev_t; | 35 | typedef struct mdk_rdev_s mdk_rdev_t; | 
| 79 | 36 | ||
| @@ -138,14 +95,16 @@ struct mdk_rdev_s | |||
| 138 | atomic_t read_errors; /* number of consecutive read errors that | 95 | atomic_t read_errors; /* number of consecutive read errors that | 
| 139 | * we have tried to ignore. | 96 | * we have tried to ignore. | 
| 140 | */ | 97 | */ | 
| 98 | atomic_t corrected_errors; /* number of corrected read errors, | ||
| 99 | * for reporting to userspace and storing | ||
| 100 | * in superblock. | ||
| 101 | */ | ||
| 141 | }; | 102 | }; | 
| 142 | 103 | ||
| 143 | typedef struct mdk_personality_s mdk_personality_t; | ||
| 144 | |||
| 145 | struct mddev_s | 104 | struct mddev_s | 
| 146 | { | 105 | { | 
| 147 | void *private; | 106 | void *private; | 
| 148 | mdk_personality_t *pers; | 107 | struct mdk_personality *pers; | 
| 149 | dev_t unit; | 108 | dev_t unit; | 
| 150 | int md_minor; | 109 | int md_minor; | 
| 151 | struct list_head disks; | 110 | struct list_head disks; | 
| @@ -164,6 +123,7 @@ struct mddev_s | |||
| 164 | int chunk_size; | 123 | int chunk_size; | 
| 165 | time_t ctime, utime; | 124 | time_t ctime, utime; | 
| 166 | int level, layout; | 125 | int level, layout; | 
| 126 | char clevel[16]; | ||
| 167 | int raid_disks; | 127 | int raid_disks; | 
| 168 | int max_disks; | 128 | int max_disks; | 
| 169 | sector_t size; /* used size of component devices */ | 129 | sector_t size; /* used size of component devices */ | 
| @@ -183,6 +143,11 @@ struct mddev_s | |||
| 183 | sector_t resync_mismatches; /* count of sectors where | 143 | sector_t resync_mismatches; /* count of sectors where | 
| 184 | * parity/replica mismatch found | 144 | * parity/replica mismatch found | 
| 185 | */ | 145 | */ | 
| 146 | /* if zero, use the system-wide default */ | ||
| 147 | int sync_speed_min; | ||
| 148 | int sync_speed_max; | ||
| 149 | |||
| 150 | int ok_start_degraded; | ||
| 186 | /* recovery/resync flags | 151 | /* recovery/resync flags | 
| 187 | * NEEDED: we might need to start a resync/recover | 152 | * NEEDED: we might need to start a resync/recover | 
| 188 | * RUNNING: a thread is running, or about to be started | 153 | * RUNNING: a thread is running, or about to be started | 
| @@ -265,9 +230,11 @@ static inline void md_sync_acct(struct block_device *bdev, unsigned long nr_sect | |||
| 265 | atomic_add(nr_sectors, &bdev->bd_contains->bd_disk->sync_io); | 230 | atomic_add(nr_sectors, &bdev->bd_contains->bd_disk->sync_io); | 
| 266 | } | 231 | } | 
| 267 | 232 | ||
| 268 | struct mdk_personality_s | 233 | struct mdk_personality | 
| 269 | { | 234 | { | 
| 270 | char *name; | 235 | char *name; | 
| 236 | int level; | ||
| 237 | struct list_head list; | ||
| 271 | struct module *owner; | 238 | struct module *owner; | 
| 272 | int (*make_request)(request_queue_t *q, struct bio *bio); | 239 | int (*make_request)(request_queue_t *q, struct bio *bio); | 
| 273 | int (*run)(mddev_t *mddev); | 240 | int (*run)(mddev_t *mddev); | 
| @@ -305,8 +272,6 @@ static inline char * mdname (mddev_t * mddev) | |||
| 305 | return mddev->gendisk ? mddev->gendisk->disk_name : "mdX"; | 272 | return mddev->gendisk ? mddev->gendisk->disk_name : "mdX"; | 
| 306 | } | 273 | } | 
| 307 | 274 | ||
| 308 | extern mdk_rdev_t * find_rdev_nr(mddev_t *mddev, int nr); | ||
| 309 | |||
| 310 | /* | 275 | /* | 
| 311 | * iterates through some rdev ringlist. It's safe to remove the | 276 | * iterates through some rdev ringlist. It's safe to remove the | 
| 312 | * current 'rdev'. Dont touch 'tmp' though. | 277 | * current 'rdev'. Dont touch 'tmp' though. | 
| @@ -366,5 +331,10 @@ do { \ | |||
| 366 | __wait_event_lock_irq(wq, condition, lock, cmd); \ | 331 | __wait_event_lock_irq(wq, condition, lock, cmd); \ | 
| 367 | } while (0) | 332 | } while (0) | 
| 368 | 333 | ||
| 334 | static inline void safe_put_page(struct page *p) | ||
| 335 | { | ||
| 336 | if (p) put_page(p); | ||
| 337 | } | ||
| 338 | |||
| 369 | #endif | 339 | #endif | 
| 370 | 340 | ||
