1 /**************************************************************************** 2 **************************************************************************** 3 *** 4 *** This header was automatically generated from a Linux kernel header 5 *** of the same name, to make information necessary for userspace to 6 *** call into the kernel available to libc. It contains only constants, 7 *** structures, and macros generated from the original header, and thus, 8 *** contains no copyrightable information. 9 *** 10 **************************************************************************** 11 ****************************************************************************/ 12 #ifndef _MD_K_H 13 #define _MD_K_H 14 15 #include "../../../drivers/md/dm-bio-list.h" 16 17 #define LEVEL_MULTIPATH (-4) 18 #define LEVEL_LINEAR (-1) 19 #define LEVEL_FAULTY (-5) 20 21 #define LEVEL_NONE (-1000000) 22 23 #define MaxSector (~(sector_t)0) 24 #define MD_THREAD_NAME_MAX 14 25 26 typedef struct mddev_s mddev_t; 27 typedef struct mdk_rdev_s mdk_rdev_t; 28 29 #define MAX_MD_DEVS 256 30 31 #define MAX_CHUNK_SIZE (1<<30) 32 33 struct mdk_rdev_s 34 { 35 struct list_head same_set; 36 37 sector_t size; 38 mddev_t *mddev; 39 unsigned long last_events; 40 41 struct block_device *bdev; 42 43 struct page *sb_page; 44 int sb_loaded; 45 __u64 sb_events; 46 sector_t data_offset; 47 sector_t sb_offset; 48 int sb_size; 49 int preferred_minor; 50 51 struct kobject kobj; 52 53 unsigned long flags; 54 #define Faulty 1 55 #define In_sync 2 56 #define WriteMostly 4 57 #define BarriersNotsupp 5 58 59 int desc_nr; 60 int raid_disk; 61 int saved_raid_disk; 62 sector_t recovery_offset; 63 64 atomic_t nr_pending; 65 atomic_t read_errors; 66 atomic_t corrected_errors; 67 }; 68 69 struct mddev_s 70 { 71 void *private; 72 struct mdk_personality *pers; 73 dev_t unit; 74 int md_minor; 75 struct list_head disks; 76 int sb_dirty; 77 int ro; 78 79 struct gendisk *gendisk; 80 81 struct kobject kobj; 82 83 int major_version, 84 minor_version, 85 patch_version; 86 int persistent; 87 int chunk_size; 88 time_t ctime, utime; 89 int level, layout; 90 char clevel[16]; 91 int raid_disks; 92 int max_disks; 93 sector_t size; 94 sector_t array_size; 95 __u64 events; 96 97 char uuid[16]; 98 99 sector_t reshape_position; 100 int delta_disks, new_level, new_layout, new_chunk; 101 102 struct mdk_thread_s *thread; 103 struct mdk_thread_s *sync_thread; 104 sector_t curr_resync; 105 unsigned long resync_mark; 106 sector_t resync_mark_cnt; 107 sector_t curr_mark_cnt; 108 109 sector_t resync_max_sectors; 110 111 sector_t resync_mismatches; 112 113 sector_t suspend_lo; 114 sector_t suspend_hi; 115 116 int sync_speed_min; 117 int sync_speed_max; 118 119 int ok_start_degraded; 120 121 #define MD_RECOVERY_RUNNING 0 122 #define MD_RECOVERY_SYNC 1 123 #define MD_RECOVERY_ERR 2 124 #define MD_RECOVERY_INTR 3 125 #define MD_RECOVERY_DONE 4 126 #define MD_RECOVERY_NEEDED 5 127 #define MD_RECOVERY_REQUESTED 6 128 #define MD_RECOVERY_CHECK 7 129 #define MD_RECOVERY_RESHAPE 8 130 #define MD_RECOVERY_FROZEN 9 131 132 unsigned long recovery; 133 134 int in_sync; 135 struct mutex reconfig_mutex; 136 atomic_t active; 137 138 int changed; 139 int degraded; 140 int barriers_work; 141 struct bio *biolist; 142 143 atomic_t recovery_active; 144 wait_queue_head_t recovery_wait; 145 sector_t recovery_cp; 146 147 spinlock_t write_lock; 148 wait_queue_head_t sb_wait; 149 atomic_t pending_writes; 150 151 unsigned int safemode; 152 unsigned int safemode_delay; 153 struct timer_list safemode_timer; 154 atomic_t writes_pending; 155 request_queue_t *queue; 156 157 atomic_t write_behind; 158 unsigned int max_write_behind; 159 160 struct bitmap *bitmap; 161 struct file *bitmap_file; 162 long bitmap_offset; 163 long default_bitmap_offset; 164 165 struct list_head all_mddevs; 166 }; 167 168 struct md_sysfs_entry { 169 struct attribute attr; 170 ssize_t (*show)(mddev_t *, char *); 171 ssize_t (*store)(mddev_t *, const char *, size_t); 172 }; 173 174 #define ITERATE_RDEV_GENERIC(head,rdev,tmp) for ((tmp) = (head).next; (rdev) = (list_entry((tmp), mdk_rdev_t, same_set)), (tmp) = (tmp)->next, (tmp)->prev != &(head) ; ) 175 #define ITERATE_RDEV(mddev,rdev,tmp) ITERATE_RDEV_GENERIC((mddev)->disks,rdev,tmp) 176 #define ITERATE_RDEV_PENDING(rdev,tmp) ITERATE_RDEV_GENERIC(pending_raid_disks,rdev,tmp) 177 178 #define THREAD_WAKEUP 0 179 180 #define __wait_event_lock_irq(wq, condition, lock, cmd) do { wait_queue_t __wait; init_waitqueue_entry(&__wait, current); add_wait_queue(&wq, &__wait); for (;;) { set_current_state(TASK_UNINTERRUPTIBLE); if (condition) break; spin_unlock_irq(&lock); cmd; schedule(); spin_lock_irq(&lock); } current->state = TASK_RUNNING; remove_wait_queue(&wq, &__wait); } while (0) 181 182 #define wait_event_lock_irq(wq, condition, lock, cmd) do { if (condition) break; __wait_event_lock_irq(wq, condition, lock, cmd); } while (0) 183 184 #endif 185
