Lines Matching full:conf
22 * conf->seq_write is the number of the last batch successfully written.
23 * conf->seq_flush is the number of the last batch that was closed to
73 static inline struct hlist_head *stripe_hash(struct r5conf *conf, sector_t sect) in stripe_hash() argument
75 int hash = (sect >> RAID5_STRIPE_SHIFT(conf)) & HASH_MASK; in stripe_hash()
76 return &conf->stripe_hashtbl[hash]; in stripe_hash()
79 static inline int stripe_hash_locks_hash(struct r5conf *conf, sector_t sect) in stripe_hash_locks_hash() argument
81 return (sect >> RAID5_STRIPE_SHIFT(conf)) & STRIPE_HASH_LOCKS_MASK; in stripe_hash_locks_hash()
84 static inline void lock_device_hash_lock(struct r5conf *conf, int hash) in lock_device_hash_lock() argument
85 __acquires(&conf->device_lock) in lock_device_hash_lock()
87 spin_lock_irq(conf->hash_locks + hash); in lock_device_hash_lock()
88 spin_lock(&conf->device_lock); in lock_device_hash_lock()
91 static inline void unlock_device_hash_lock(struct r5conf *conf, int hash) in unlock_device_hash_lock() argument
92 __releases(&conf->device_lock) in unlock_device_hash_lock()
94 spin_unlock(&conf->device_lock); in unlock_device_hash_lock()
95 spin_unlock_irq(conf->hash_locks + hash); in unlock_device_hash_lock()
98 static inline void lock_all_device_hash_locks_irq(struct r5conf *conf) in lock_all_device_hash_locks_irq() argument
99 __acquires(&conf->device_lock) in lock_all_device_hash_locks_irq()
102 spin_lock_irq(conf->hash_locks); in lock_all_device_hash_locks_irq()
104 spin_lock_nest_lock(conf->hash_locks + i, conf->hash_locks); in lock_all_device_hash_locks_irq()
105 spin_lock(&conf->device_lock); in lock_all_device_hash_locks_irq()
108 static inline void unlock_all_device_hash_locks_irq(struct r5conf *conf) in unlock_all_device_hash_locks_irq() argument
109 __releases(&conf->device_lock) in unlock_all_device_hash_locks_irq()
112 spin_unlock(&conf->device_lock); in unlock_all_device_hash_locks_irq()
114 spin_unlock(conf->hash_locks + i); in unlock_all_device_hash_locks_irq()
115 spin_unlock_irq(conf->hash_locks); in unlock_all_device_hash_locks_irq()
157 static void print_raid5_conf (struct r5conf *conf);
176 struct r5conf *conf = sh->raid_conf; in raid5_wakeup_stripe_thread() local
188 group = conf->worker_groups + cpu_to_group(cpu); in raid5_wakeup_stripe_thread()
197 if (conf->worker_cnt_per_group == 0) { in raid5_wakeup_stripe_thread()
198 md_wakeup_thread(conf->mddev->thread); in raid5_wakeup_stripe_thread()
202 group = conf->worker_groups + cpu_to_group(sh->cpu); in raid5_wakeup_stripe_thread()
210 for (i = 1; i < conf->worker_cnt_per_group && thread_cnt > 0; i++) { in raid5_wakeup_stripe_thread()
220 static void do_release_stripe(struct r5conf *conf, struct stripe_head *sh, in do_release_stripe() argument
222 __must_hold(&conf->device_lock) in do_release_stripe()
228 BUG_ON(atomic_read(&conf->active_stripes)==0); in do_release_stripe()
230 if (r5c_is_writeback(conf->log)) in do_release_stripe()
242 (conf->quiesce && r5c_is_writeback(conf->log) && in do_release_stripe()
252 list_add_tail(&sh->lru, &conf->delayed_list); in do_release_stripe()
254 sh->bm_seq - conf->seq_write > 0) in do_release_stripe()
255 list_add_tail(&sh->lru, &conf->bitmap_list); in do_release_stripe()
259 if (conf->worker_cnt_per_group == 0) { in do_release_stripe()
262 &conf->loprio_list); in do_release_stripe()
265 &conf->handle_list); in do_release_stripe()
271 md_wakeup_thread(conf->mddev->thread); in do_release_stripe()
275 if (atomic_dec_return(&conf->preread_active_stripes) in do_release_stripe()
277 md_wakeup_thread(conf->mddev->thread); in do_release_stripe()
278 atomic_dec(&conf->active_stripes); in do_release_stripe()
280 if (!r5c_is_writeback(conf->log)) in do_release_stripe()
286 else if (injournal == conf->raid_disks - conf->max_degraded) { in do_release_stripe()
289 atomic_inc(&conf->r5c_cached_full_stripes); in do_release_stripe()
291 atomic_dec(&conf->r5c_cached_partial_stripes); in do_release_stripe()
292 list_add_tail(&sh->lru, &conf->r5c_full_stripe_list); in do_release_stripe()
293 r5c_check_cached_full_stripe(conf); in do_release_stripe()
300 list_add_tail(&sh->lru, &conf->r5c_partial_stripe_list); in do_release_stripe()
306 static void __release_stripe(struct r5conf *conf, struct stripe_head *sh, in __release_stripe() argument
308 __must_hold(&conf->device_lock) in __release_stripe()
311 do_release_stripe(conf, sh, temp_inactive_list); in __release_stripe()
321 static void release_inactive_stripe_list(struct r5conf *conf, in release_inactive_stripe_list() argument
342 spin_lock_irqsave(conf->hash_locks + hash, flags); in release_inactive_stripe_list()
343 if (list_empty(conf->inactive_list + hash) && in release_inactive_stripe_list()
345 atomic_dec(&conf->empty_inactive_list_nr); in release_inactive_stripe_list()
346 list_splice_tail_init(list, conf->inactive_list + hash); in release_inactive_stripe_list()
348 spin_unlock_irqrestore(conf->hash_locks + hash, flags); in release_inactive_stripe_list()
355 wake_up(&conf->wait_for_stripe); in release_inactive_stripe_list()
356 if (atomic_read(&conf->active_stripes) == 0) in release_inactive_stripe_list()
357 wake_up(&conf->wait_for_quiescent); in release_inactive_stripe_list()
358 if (conf->retry_read_aligned) in release_inactive_stripe_list()
359 md_wakeup_thread(conf->mddev->thread); in release_inactive_stripe_list()
363 static int release_stripe_list(struct r5conf *conf, in release_stripe_list() argument
365 __must_hold(&conf->device_lock) in release_stripe_list()
371 head = llist_del_all(&conf->released_stripes); in release_stripe_list()
385 __release_stripe(conf, sh, &temp_inactive_list[hash]); in release_stripe_list()
394 struct r5conf *conf = sh->raid_conf; in raid5_release_stripe() local
405 if (unlikely(!conf->mddev->thread) || in raid5_release_stripe()
408 wakeup = llist_add(&sh->release_list, &conf->released_stripes); in raid5_release_stripe()
410 md_wakeup_thread(conf->mddev->thread); in raid5_release_stripe()
414 if (atomic_dec_and_lock_irqsave(&sh->count, &conf->device_lock, flags)) { in raid5_release_stripe()
417 do_release_stripe(conf, sh, &list); in raid5_release_stripe()
418 spin_unlock_irqrestore(&conf->device_lock, flags); in raid5_release_stripe()
419 release_inactive_stripe_list(conf, &list, hash); in raid5_release_stripe()
431 static inline void insert_hash(struct r5conf *conf, struct stripe_head *sh) in insert_hash() argument
433 struct hlist_head *hp = stripe_hash(conf, sh->sector); in insert_hash()
442 static struct stripe_head *get_free_stripe(struct r5conf *conf, int hash) in get_free_stripe() argument
447 if (list_empty(conf->inactive_list + hash)) in get_free_stripe()
449 first = (conf->inactive_list + hash)->next; in get_free_stripe()
453 atomic_inc(&conf->active_stripes); in get_free_stripe()
455 if (list_empty(conf->inactive_list + hash)) in get_free_stripe()
456 atomic_inc(&conf->empty_inactive_list_nr); in get_free_stripe()
500 init_stripe_shared_pages(struct stripe_head *sh, struct r5conf *conf, int disks) in init_stripe_shared_pages() argument
507 /* Each of the sh->dev[i] need one conf->stripe_size */ in init_stripe_shared_pages()
508 cnt = PAGE_SIZE / conf->stripe_size; in init_stripe_shared_pages()
572 static void stripe_set_idx(sector_t stripe, struct r5conf *conf, int previous,
577 struct r5conf *conf = sh->raid_conf; in init_stripe() local
588 seq = read_seqcount_begin(&conf->gen_lock); in init_stripe()
589 sh->generation = conf->generation - previous; in init_stripe()
590 sh->disks = previous ? conf->previous_raid_disks : conf->raid_disks; in init_stripe()
592 stripe_set_idx(sector, conf, previous, sh); in init_stripe()
609 if (read_seqcount_retry(&conf->gen_lock, seq)) in init_stripe()
612 insert_hash(conf, sh); in init_stripe()
617 static struct stripe_head *__find_stripe(struct r5conf *conf, sector_t sector, in __find_stripe() argument
623 hlist_for_each_entry(sh, stripe_hash(conf, sector), hash) in __find_stripe()
630 static struct stripe_head *find_get_stripe(struct r5conf *conf, in find_get_stripe() argument
636 sh = __find_stripe(conf, sector, generation); in find_get_stripe()
649 spin_lock(&conf->device_lock); in find_get_stripe()
652 atomic_inc(&conf->active_stripes); in find_get_stripe()
656 if (!list_empty(conf->inactive_list + hash)) in find_get_stripe()
659 if (list_empty(conf->inactive_list + hash) && in find_get_stripe()
661 atomic_inc(&conf->empty_inactive_list_nr); in find_get_stripe()
668 spin_unlock(&conf->device_lock); in find_get_stripe()
686 * Most calls to this function hold &conf->device_lock. Calls
690 int raid5_calc_degraded(struct r5conf *conf) in raid5_calc_degraded() argument
697 for (i = 0; i < conf->previous_raid_disks; i++) { in raid5_calc_degraded()
698 struct md_rdev *rdev = rcu_dereference(conf->disks[i].rdev); in raid5_calc_degraded()
700 rdev = rcu_dereference(conf->disks[i].replacement); in raid5_calc_degraded()
715 if (conf->raid_disks >= conf->previous_raid_disks) in raid5_calc_degraded()
719 if (conf->raid_disks == conf->previous_raid_disks) in raid5_calc_degraded()
723 for (i = 0; i < conf->raid_disks; i++) { in raid5_calc_degraded()
724 struct md_rdev *rdev = rcu_dereference(conf->disks[i].rdev); in raid5_calc_degraded()
726 rdev = rcu_dereference(conf->disks[i].replacement); in raid5_calc_degraded()
737 if (conf->raid_disks <= conf->previous_raid_disks) in raid5_calc_degraded()
746 static bool has_failed(struct r5conf *conf) in has_failed() argument
748 int degraded = conf->mddev->degraded; in has_failed()
750 if (test_bit(MD_BROKEN, &conf->mddev->flags)) in has_failed()
753 if (conf->mddev->reshape_position != MaxSector) in has_failed()
754 degraded = raid5_calc_degraded(conf); in has_failed()
756 return degraded > conf->max_degraded; in has_failed()
791 static bool is_inactive_blocked(struct r5conf *conf, int hash) in is_inactive_blocked() argument
793 if (list_empty(conf->inactive_list + hash)) in is_inactive_blocked()
796 if (!test_bit(R5_INACTIVE_BLOCKED, &conf->cache_state)) in is_inactive_blocked()
799 return (atomic_read(&conf->active_stripes) < in is_inactive_blocked()
800 (conf->max_nr_stripes * 3 / 4)); in is_inactive_blocked()
803 struct stripe_head *raid5_get_active_stripe(struct r5conf *conf, in raid5_get_active_stripe() argument
808 int hash = stripe_hash_locks_hash(conf, sector); in raid5_get_active_stripe()
813 spin_lock_irq(conf->hash_locks + hash); in raid5_get_active_stripe()
816 if (!(flags & R5_GAS_NOQUIESCE) && conf->quiesce) { in raid5_get_active_stripe()
829 wait_event_lock_irq(conf->wait_for_quiescent, in raid5_get_active_stripe()
830 !conf->quiesce, in raid5_get_active_stripe()
831 *(conf->hash_locks + hash)); in raid5_get_active_stripe()
834 sh = find_get_stripe(conf, sector, conf->generation - previous, in raid5_get_active_stripe()
839 if (!test_bit(R5_INACTIVE_BLOCKED, &conf->cache_state)) { in raid5_get_active_stripe()
840 sh = get_free_stripe(conf, hash); in raid5_get_active_stripe()
842 r5c_check_stripe_cache_usage(conf); in raid5_get_active_stripe()
848 if (!test_bit(R5_DID_ALLOC, &conf->cache_state)) in raid5_get_active_stripe()
849 set_bit(R5_ALLOC_MORE, &conf->cache_state); in raid5_get_active_stripe()
855 set_bit(R5_INACTIVE_BLOCKED, &conf->cache_state); in raid5_get_active_stripe()
856 r5l_wake_reclaim(conf->log, 0); in raid5_get_active_stripe()
864 wait_event_lock_irq(conf->wait_for_stripe, in raid5_get_active_stripe()
865 is_inactive_blocked(conf, hash), in raid5_get_active_stripe()
866 *(conf->hash_locks + hash)); in raid5_get_active_stripe()
867 clear_bit(R5_INACTIVE_BLOCKED, &conf->cache_state); in raid5_get_active_stripe()
870 spin_unlock_irq(conf->hash_locks + hash); in raid5_get_active_stripe()
904 struct r5conf *conf = sh->raid_conf; in stripe_can_batch() local
906 if (raid5_has_log(conf) || raid5_has_ppl(conf)) in stripe_can_batch()
914 static void stripe_add_to_batch_list(struct r5conf *conf, in stripe_add_to_batch_list() argument
924 if (!sector_div(tmp_sec, conf->chunk_sectors)) in stripe_add_to_batch_list()
926 head_sector = sh->sector - RAID5_STRIPE_SECTORS(conf); in stripe_add_to_batch_list()
932 hash = stripe_hash_locks_hash(conf, head_sector); in stripe_add_to_batch_list()
933 spin_lock_irq(conf->hash_locks + hash); in stripe_add_to_batch_list()
934 head = find_get_stripe(conf, head_sector, conf->generation, in stripe_add_to_batch_list()
936 spin_unlock_irq(conf->hash_locks + hash); in stripe_add_to_batch_list()
989 if (atomic_dec_return(&conf->preread_active_stripes) in stripe_add_to_batch_list()
991 md_wakeup_thread(conf->mddev->thread); in stripe_add_to_batch_list()
1012 static int use_new_offset(struct r5conf *conf, struct stripe_head *sh) in use_new_offset() argument
1014 sector_t progress = conf->reshape_progress; in use_new_offset()
1016 * of conf->generation, or ->data_offset that was set before in use_new_offset()
1022 if (sh->generation == conf->generation - 1) in use_new_offset()
1052 static void dispatch_defer_bios(struct r5conf *conf, int target, in dispatch_defer_bios() argument
1059 if (conf->pending_data_cnt == 0) in dispatch_defer_bios()
1062 list_sort(NULL, &conf->pending_list, cmp_stripe); in dispatch_defer_bios()
1064 first = conf->pending_list.next; in dispatch_defer_bios()
1067 if (conf->next_pending_data) in dispatch_defer_bios()
1068 list_move_tail(&conf->pending_list, in dispatch_defer_bios()
1069 &conf->next_pending_data->sibling); in dispatch_defer_bios()
1071 while (!list_empty(&conf->pending_list)) { in dispatch_defer_bios()
1072 data = list_first_entry(&conf->pending_list, in dispatch_defer_bios()
1079 list_move(&data->sibling, &conf->free_list); in dispatch_defer_bios()
1084 conf->pending_data_cnt -= cnt; in dispatch_defer_bios()
1085 BUG_ON(conf->pending_data_cnt < 0 || cnt < target); in dispatch_defer_bios()
1087 if (next != &conf->pending_list) in dispatch_defer_bios()
1088 conf->next_pending_data = list_entry(next, in dispatch_defer_bios()
1091 conf->next_pending_data = NULL; in dispatch_defer_bios()
1093 if (first != &conf->pending_list) in dispatch_defer_bios()
1094 list_move_tail(&conf->pending_list, first); in dispatch_defer_bios()
1097 static void flush_deferred_bios(struct r5conf *conf) in flush_deferred_bios() argument
1101 if (conf->pending_data_cnt == 0) in flush_deferred_bios()
1104 spin_lock(&conf->pending_bios_lock); in flush_deferred_bios()
1105 dispatch_defer_bios(conf, conf->pending_data_cnt, &tmp); in flush_deferred_bios()
1106 BUG_ON(conf->pending_data_cnt != 0); in flush_deferred_bios()
1107 spin_unlock(&conf->pending_bios_lock); in flush_deferred_bios()
1112 static void defer_issue_bios(struct r5conf *conf, sector_t sector, in defer_issue_bios() argument
1118 spin_lock(&conf->pending_bios_lock); in defer_issue_bios()
1119 ent = list_first_entry(&conf->free_list, struct r5pending_data, in defer_issue_bios()
1121 list_move_tail(&ent->sibling, &conf->pending_list); in defer_issue_bios()
1125 conf->pending_data_cnt++; in defer_issue_bios()
1126 if (conf->pending_data_cnt >= PENDING_IO_MAX) in defer_issue_bios()
1127 dispatch_defer_bios(conf, PENDING_IO_ONE_FLUSH, &tmp); in defer_issue_bios()
1129 spin_unlock(&conf->pending_bios_lock); in defer_issue_bios()
1141 struct r5conf *conf = sh->raid_conf; in ops_run_io() local
1153 should_defer = conf->batch_bio_dispatch && conf->group_cnt; in ops_run_io()
1186 rrdev = rcu_dereference(conf->disks[i].replacement); in ops_run_io()
1188 rdev = rcu_dereference(conf->disks[i].rdev); in ops_run_io()
1223 int bad = is_badblock(rdev, sh->sector, RAID5_STRIPE_SECTORS(conf), in ops_run_io()
1230 if (!conf->mddev->external && in ops_run_io()
1231 conf->mddev->sb_flags) { in ops_run_io()
1236 md_check_recovery(conf->mddev); in ops_run_io()
1244 md_wait_for_blocked_rdev(rdev, conf->mddev); in ops_run_io()
1247 rdev_dec_pending(rdev, conf->mddev); in ops_run_io()
1255 md_sync_acct(rdev->bdev, RAID5_STRIPE_SECTORS(conf)); in ops_run_io()
1271 if (use_new_offset(conf, sh)) in ops_run_io()
1294 bi->bi_io_vec[0].bv_len = RAID5_STRIPE_SIZE(conf); in ops_run_io()
1296 bi->bi_iter.bi_size = RAID5_STRIPE_SIZE(conf); in ops_run_io()
1306 if (conf->mddev->gendisk) in ops_run_io()
1308 disk_devt(conf->mddev->gendisk), in ops_run_io()
1318 md_sync_acct(rrdev->bdev, RAID5_STRIPE_SECTORS(conf)); in ops_run_io()
1334 if (use_new_offset(conf, sh)) in ops_run_io()
1344 rbi->bi_io_vec[0].bv_len = RAID5_STRIPE_SIZE(conf); in ops_run_io()
1346 rbi->bi_iter.bi_size = RAID5_STRIPE_SIZE(conf); in ops_run_io()
1353 if (conf->mddev->gendisk) in ops_run_io()
1355 disk_devt(conf->mddev->gendisk), in ops_run_io()
1380 defer_issue_bios(conf, head_sh->sector, &pending_bios); in ops_run_io()
1394 struct r5conf *conf = sh->raid_conf; in async_copy_data() local
1416 if (len > 0 && page_offset + len > RAID5_STRIPE_SIZE(conf)) in async_copy_data()
1417 clen = RAID5_STRIPE_SIZE(conf) - page_offset; in async_copy_data()
1425 if (conf->skip_copy && in async_copy_data()
1427 clen == RAID5_STRIPE_SIZE(conf) && in async_copy_data()
1452 struct r5conf *conf = sh->raid_conf; in ops_complete_biofill() local
1473 dev->sector + RAID5_STRIPE_SECTORS(conf)) { in ops_complete_biofill()
1474 rbi2 = r5_next_bio(conf, rbi, dev->sector); in ops_complete_biofill()
1491 struct r5conf *conf = sh->raid_conf; in ops_run_biofill() local
1506 dev->sector + RAID5_STRIPE_SECTORS(conf)) { in ops_run_biofill()
1510 rbi = r5_next_bio(conf, rbi, dev->sector); in ops_run_biofill()
1936 struct r5conf *conf = sh->raid_conf; in ops_run_biodrain() local
1969 dev->sector + RAID5_STRIPE_SECTORS(conf)) { in ops_run_biodrain()
1980 r5c_is_writeback(conf->log)); in ops_run_biodrain()
1982 !r5c_is_writeback(conf->log)) { in ops_run_biodrain()
1988 wbi = r5_next_bio(conf, wbi, dev->sector); in ops_run_biodrain()
2293 struct r5conf *conf = sh->raid_conf; in raid_run_ops() local
2294 int level = conf->level; in raid_run_ops()
2297 local_lock(&conf->percpu->lock); in raid_run_ops()
2298 percpu = this_cpu_ptr(conf->percpu); in raid_run_ops()
2358 local_unlock(&conf->percpu->lock); in raid_run_ops()
2372 int disks, struct r5conf *conf) in alloc_stripe() argument
2385 sh->raid_conf = conf; in alloc_stripe()
2388 if (raid5_has_ppl(conf)) { in alloc_stripe()
2396 if (init_stripe_shared_pages(sh, conf, disks)) { in alloc_stripe()
2404 static int grow_one_stripe(struct r5conf *conf, gfp_t gfp) in grow_one_stripe() argument
2408 sh = alloc_stripe(conf->slab_cache, gfp, conf->pool_size, conf); in grow_one_stripe()
2414 free_stripe(conf->slab_cache, sh); in grow_one_stripe()
2418 conf->max_nr_stripes % NR_STRIPE_HASH_LOCKS; in grow_one_stripe()
2420 atomic_inc(&conf->active_stripes); in grow_one_stripe()
2423 conf->max_nr_stripes++; in grow_one_stripe()
2427 static int grow_stripes(struct r5conf *conf, int num) in grow_stripes() argument
2430 size_t namelen = sizeof(conf->cache_name[0]); in grow_stripes()
2431 int devs = max(conf->raid_disks, conf->previous_raid_disks); in grow_stripes()
2433 if (conf->mddev->gendisk) in grow_stripes()
2434 snprintf(conf->cache_name[0], namelen, in grow_stripes()
2435 "raid%d-%s", conf->level, mdname(conf->mddev)); in grow_stripes()
2437 snprintf(conf->cache_name[0], namelen, in grow_stripes()
2438 "raid%d-%p", conf->level, conf->mddev); in grow_stripes()
2439 snprintf(conf->cache_name[1], namelen, "%.27s-alt", conf->cache_name[0]); in grow_stripes()
2441 conf->active_name = 0; in grow_stripes()
2442 sc = kmem_cache_create(conf->cache_name[conf->active_name], in grow_stripes()
2447 conf->slab_cache = sc; in grow_stripes()
2448 conf->pool_size = devs; in grow_stripes()
2450 if (!grow_one_stripe(conf, GFP_KERNEL)) in grow_stripes()
2497 static int resize_chunks(struct r5conf *conf, int new_disks, int new_sectors) in resize_chunks() argument
2507 if (conf->scribble_disks >= new_disks && in resize_chunks()
2508 conf->scribble_sectors >= new_sectors) in resize_chunks()
2510 mddev_suspend(conf->mddev); in resize_chunks()
2516 percpu = per_cpu_ptr(conf->percpu, cpu); in resize_chunks()
2518 new_sectors / RAID5_STRIPE_SECTORS(conf)); in resize_chunks()
2524 mddev_resume(conf->mddev); in resize_chunks()
2526 conf->scribble_disks = new_disks; in resize_chunks()
2527 conf->scribble_sectors = new_sectors; in resize_chunks()
2532 static int resize_stripes(struct r5conf *conf, int newsize) in resize_stripes() argument
2546 * 3/ reallocate conf->disks to be suitable bigger. If this fails, in resize_stripes()
2565 md_allow_write(conf->mddev); in resize_stripes()
2568 sc = kmem_cache_create(conf->cache_name[1-conf->active_name], in resize_stripes()
2575 mutex_lock(&conf->cache_size_mutex); in resize_stripes()
2577 for (i = conf->max_nr_stripes; i; i--) { in resize_stripes()
2578 nsh = alloc_stripe(sc, GFP_KERNEL, newsize, conf); in resize_stripes()
2592 mutex_unlock(&conf->cache_size_mutex); in resize_stripes()
2602 lock_device_hash_lock(conf, hash); in resize_stripes()
2603 wait_event_cmd(conf->wait_for_stripe, in resize_stripes()
2604 !list_empty(conf->inactive_list + hash), in resize_stripes()
2605 unlock_device_hash_lock(conf, hash), in resize_stripes()
2606 lock_device_hash_lock(conf, hash)); in resize_stripes()
2607 osh = get_free_stripe(conf, hash); in resize_stripes()
2608 unlock_device_hash_lock(conf, hash); in resize_stripes()
2616 for(i=0; i<conf->pool_size; i++) { in resize_stripes()
2622 free_stripe(conf->slab_cache, osh); in resize_stripes()
2624 if (cnt >= conf->max_nr_stripes / NR_STRIPE_HASH_LOCKS + in resize_stripes()
2625 !!((conf->max_nr_stripes % NR_STRIPE_HASH_LOCKS) > hash)) { in resize_stripes()
2630 kmem_cache_destroy(conf->slab_cache); in resize_stripes()
2635 * conf->disks and the scribble region in resize_stripes()
2639 for (i = 0; i < conf->pool_size; i++) in resize_stripes()
2640 ndisks[i] = conf->disks[i]; in resize_stripes()
2642 for (i = conf->pool_size; i < newsize; i++) { in resize_stripes()
2649 for (i = conf->pool_size; i < newsize; i++) in resize_stripes()
2654 kfree(conf->disks); in resize_stripes()
2655 conf->disks = ndisks; in resize_stripes()
2660 conf->slab_cache = sc; in resize_stripes()
2661 conf->active_name = 1-conf->active_name; in resize_stripes()
2677 for (i = conf->raid_disks; i < newsize; i++) { in resize_stripes()
2685 for (i=conf->raid_disks; i < newsize; i++) in resize_stripes()
2700 conf->pool_size = newsize; in resize_stripes()
2701 mutex_unlock(&conf->cache_size_mutex); in resize_stripes()
2706 static int drop_one_stripe(struct r5conf *conf) in drop_one_stripe() argument
2709 int hash = (conf->max_nr_stripes - 1) & STRIPE_HASH_LOCKS_MASK; in drop_one_stripe()
2711 spin_lock_irq(conf->hash_locks + hash); in drop_one_stripe()
2712 sh = get_free_stripe(conf, hash); in drop_one_stripe()
2713 spin_unlock_irq(conf->hash_locks + hash); in drop_one_stripe()
2718 free_stripe(conf->slab_cache, sh); in drop_one_stripe()
2719 atomic_dec(&conf->active_stripes); in drop_one_stripe()
2720 conf->max_nr_stripes--; in drop_one_stripe()
2724 static void shrink_stripes(struct r5conf *conf) in shrink_stripes() argument
2726 while (conf->max_nr_stripes && in shrink_stripes()
2727 drop_one_stripe(conf)) in shrink_stripes()
2730 kmem_cache_destroy(conf->slab_cache); in shrink_stripes()
2731 conf->slab_cache = NULL; in shrink_stripes()
2759 struct r5conf *conf = sh->raid_conf; in raid5_end_read_request() local
2781 rdev = rdev_pend_deref(conf->disks[i].replacement); in raid5_end_read_request()
2783 rdev = rdev_pend_deref(conf->disks[i].rdev); in raid5_end_read_request()
2785 if (use_new_offset(conf, sh)) in raid5_end_read_request()
2798 mdname(conf->mddev), RAID5_STRIPE_SECTORS(conf), in raid5_end_read_request()
2801 atomic_add(RAID5_STRIPE_SECTORS(conf), &rdev->corrected_errors); in raid5_end_read_request()
2826 mdname(conf->mddev), in raid5_end_read_request()
2829 else if (conf->mddev->degraded >= conf->max_degraded) { in raid5_end_read_request()
2833 mdname(conf->mddev), in raid5_end_read_request()
2841 mdname(conf->mddev), in raid5_end_read_request()
2845 > conf->max_nr_stripes) { in raid5_end_read_request()
2848 mdname(conf->mddev), in raid5_end_read_request()
2850 conf->max_nr_stripes); in raid5_end_read_request()
2852 mdname(conf->mddev), rdev->bdev); in raid5_end_read_request()
2873 rdev, sh->sector, RAID5_STRIPE_SECTORS(conf), 0))) in raid5_end_read_request()
2874 md_error(conf->mddev, rdev); in raid5_end_read_request()
2877 rdev_dec_pending(rdev, conf->mddev); in raid5_end_read_request()
2887 struct r5conf *conf = sh->raid_conf; in raid5_end_write_request() local
2896 rdev = rdev_pend_deref(conf->disks[i].rdev); in raid5_end_write_request()
2900 rdev = rdev_pend_deref(conf->disks[i].replacement); in raid5_end_write_request()
2908 rdev = rdev_pend_deref(conf->disks[i].rdev); in raid5_end_write_request()
2922 md_error(conf->mddev, rdev); in raid5_end_write_request()
2924 RAID5_STRIPE_SECTORS(conf), in raid5_end_write_request()
2936 RAID5_STRIPE_SECTORS(conf), in raid5_end_write_request()
2947 rdev_dec_pending(rdev, conf->mddev); in raid5_end_write_request()
2964 struct r5conf *conf = mddev->private; in raid5_error() local
2971 spin_lock_irqsave(&conf->device_lock, flags); in raid5_error()
2974 mddev->degraded = raid5_calc_degraded(conf); in raid5_error()
2976 if (has_failed(conf)) { in raid5_error()
2977 set_bit(MD_BROKEN, &conf->mddev->flags); in raid5_error()
2978 conf->recovery_disabled = mddev->recovery_disabled; in raid5_error()
2981 mdname(mddev), mddev->degraded, conf->raid_disks); in raid5_error()
2984 mdname(mddev), conf->raid_disks - mddev->degraded); in raid5_error()
2987 spin_unlock_irqrestore(&conf->device_lock, flags); in raid5_error()
3000 sector_t raid5_compute_sector(struct r5conf *conf, sector_t r_sector, in raid5_compute_sector() argument
3010 int algorithm = previous ? conf->prev_algo in raid5_compute_sector()
3011 : conf->algorithm; in raid5_compute_sector()
3012 int sectors_per_chunk = previous ? conf->prev_chunk_sectors in raid5_compute_sector()
3013 : conf->chunk_sectors; in raid5_compute_sector()
3014 int raid_disks = previous ? conf->previous_raid_disks in raid5_compute_sector()
3015 : conf->raid_disks; in raid5_compute_sector()
3016 int data_disks = raid_disks - conf->max_degraded; in raid5_compute_sector()
3036 switch(conf->level) { in raid5_compute_sector()
3204 struct r5conf *conf = sh->raid_conf; in raid5_compute_blocknr() local
3206 int data_disks = raid_disks - conf->max_degraded; in raid5_compute_blocknr()
3208 int sectors_per_chunk = previous ? conf->prev_chunk_sectors in raid5_compute_blocknr()
3209 : conf->chunk_sectors; in raid5_compute_blocknr()
3210 int algorithm = previous ? conf->prev_algo in raid5_compute_blocknr()
3211 : conf->algorithm; in raid5_compute_blocknr()
3224 switch(conf->level) { in raid5_compute_blocknr()
3311 check = raid5_compute_sector(conf, r_sector, in raid5_compute_blocknr()
3316 mdname(conf->mddev)); in raid5_compute_blocknr()
3343 * stripe, we need to reserve (conf->raid_disk + 1) pages per stripe
3345 * operation, we only need (conf->max_degraded + 1) pages per stripe.
3360 static inline bool delay_towrite(struct r5conf *conf, in delay_towrite() argument
3369 if (test_bit(R5C_LOG_CRITICAL, &conf->cache_state) && in delay_towrite()
3383 struct r5conf *conf = sh->raid_conf; in schedule_reconstruction() local
3384 int level = conf->level; in schedule_reconstruction()
3398 if (dev->towrite && !delay_towrite(conf, dev, s)) { in schedule_reconstruction()
3424 if (s->locked + conf->max_degraded == disks) in schedule_reconstruction()
3426 atomic_inc(&conf->pending_full_writes); in schedule_reconstruction()
3490 struct r5conf *conf = sh->raid_conf; in stripe_bio_overlaps() local
3514 if (forwrite && raid5_has_ppl(conf)) { in stripe_bio_overlaps()
3540 if (first + conf->chunk_sectors * (count - 1) != last) in stripe_bio_overlaps()
3550 struct r5conf *conf = sh->raid_conf; in __add_stripe_bio() local
3573 md_write_inc(conf->mddev, bi); in __add_stripe_bio()
3579 sector < sh->dev[dd_idx].sector + RAID5_STRIPE_SECTORS(conf) && in __add_stripe_bio()
3581 bi = r5_next_bio(conf, bi, sh->dev[dd_idx].sector)) { in __add_stripe_bio()
3585 if (sector >= sh->dev[dd_idx].sector + RAID5_STRIPE_SECTORS(conf)) in __add_stripe_bio()
3594 if (conf->mddev->bitmap && firstwrite) { in __add_stripe_bio()
3609 md_bitmap_startwrite(conf->mddev->bitmap, sh->sector, in __add_stripe_bio()
3610 RAID5_STRIPE_SECTORS(conf), 0); in __add_stripe_bio()
3614 sh->bm_seq = conf->seq_flush+1; in __add_stripe_bio()
3641 static void end_reshape(struct r5conf *conf);
3643 static void stripe_set_idx(sector_t stripe, struct r5conf *conf, int previous, in stripe_set_idx() argument
3647 previous ? conf->prev_chunk_sectors : conf->chunk_sectors; in stripe_set_idx()
3650 int disks = previous ? conf->previous_raid_disks : conf->raid_disks; in stripe_set_idx()
3652 raid5_compute_sector(conf, in stripe_set_idx()
3653 stripe * (disks - conf->max_degraded) in stripe_set_idx()
3660 handle_failed_stripe(struct r5conf *conf, struct stripe_head *sh, in handle_failed_stripe() argument
3672 rdev = rcu_dereference(conf->disks[i].rdev); in handle_failed_stripe()
3683 RAID5_STRIPE_SECTORS(conf), 0)) in handle_failed_stripe()
3684 md_error(conf->mddev, rdev); in handle_failed_stripe()
3685 rdev_dec_pending(rdev, conf->mddev); in handle_failed_stripe()
3700 wake_up(&conf->wait_for_overlap); in handle_failed_stripe()
3703 sh->dev[i].sector + RAID5_STRIPE_SECTORS(conf)) { in handle_failed_stripe()
3704 struct bio *nextbi = r5_next_bio(conf, bi, sh->dev[i].sector); in handle_failed_stripe()
3706 md_write_end(conf->mddev); in handle_failed_stripe()
3711 md_bitmap_endwrite(conf->mddev->bitmap, sh->sector, in handle_failed_stripe()
3712 RAID5_STRIPE_SECTORS(conf), 0, 0); in handle_failed_stripe()
3724 sh->dev[i].sector + RAID5_STRIPE_SECTORS(conf)) { in handle_failed_stripe()
3725 struct bio *bi2 = r5_next_bio(conf, bi, sh->dev[i].sector); in handle_failed_stripe()
3727 md_write_end(conf->mddev); in handle_failed_stripe()
3736 s->failed > conf->max_degraded && in handle_failed_stripe()
3744 wake_up(&conf->wait_for_overlap); in handle_failed_stripe()
3748 sh->dev[i].sector + RAID5_STRIPE_SECTORS(conf)) { in handle_failed_stripe()
3750 r5_next_bio(conf, bi, sh->dev[i].sector); in handle_failed_stripe()
3757 md_bitmap_endwrite(conf->mddev->bitmap, sh->sector, in handle_failed_stripe()
3758 RAID5_STRIPE_SECTORS(conf), 0, 0); in handle_failed_stripe()
3768 if (atomic_dec_and_test(&conf->pending_full_writes)) in handle_failed_stripe()
3769 md_wakeup_thread(conf->mddev->thread); in handle_failed_stripe()
3773 handle_failed_sync(struct r5conf *conf, struct stripe_head *sh, in handle_failed_sync() argument
3782 wake_up(&conf->wait_for_overlap); in handle_failed_sync()
3792 if (test_bit(MD_RECOVERY_RECOVER, &conf->mddev->recovery)) { in handle_failed_sync()
3797 for (i = 0; i < conf->raid_disks; i++) { in handle_failed_sync()
3798 struct md_rdev *rdev = rcu_dereference(conf->disks[i].rdev); in handle_failed_sync()
3803 RAID5_STRIPE_SECTORS(conf), 0)) in handle_failed_sync()
3805 rdev = rcu_dereference(conf->disks[i].replacement); in handle_failed_sync()
3810 RAID5_STRIPE_SECTORS(conf), 0)) in handle_failed_sync()
3815 conf->recovery_disabled = in handle_failed_sync()
3816 conf->mddev->recovery_disabled; in handle_failed_sync()
3818 md_done_sync(conf->mddev, RAID5_STRIPE_SECTORS(conf), !abort); in handle_failed_sync()
4072 static void handle_stripe_clean_event(struct r5conf *conf, in handle_stripe_clean_event() argument
4103 dev->sector + RAID5_STRIPE_SECTORS(conf)) { in handle_stripe_clean_event()
4104 wbi2 = r5_next_bio(conf, wbi, dev->sector); in handle_stripe_clean_event()
4105 md_write_end(conf->mddev); in handle_stripe_clean_event()
4109 md_bitmap_endwrite(conf->mddev->bitmap, sh->sector, in handle_stripe_clean_event()
4110 RAID5_STRIPE_SECTORS(conf), in handle_stripe_clean_event()
4148 spin_lock_irq(conf->hash_locks + hash); in handle_stripe_clean_event()
4150 spin_unlock_irq(conf->hash_locks + hash); in handle_stripe_clean_event()
4165 if (atomic_dec_and_test(&conf->pending_full_writes)) in handle_stripe_clean_event()
4166 md_wakeup_thread(conf->mddev->thread); in handle_stripe_clean_event()
4187 static int handle_stripe_dirtying(struct r5conf *conf, in handle_stripe_dirtying() argument
4193 sector_t recovery_cp = conf->mddev->recovery_cp; in handle_stripe_dirtying()
4202 if (conf->rmw_level == PARITY_DISABLE_RMW || in handle_stripe_dirtying()
4210 conf->rmw_level, (unsigned long long)recovery_cp, in handle_stripe_dirtying()
4215 if (((dev->towrite && !delay_towrite(conf, dev, s)) || in handle_stripe_dirtying()
4242 if ((rmw < rcw || (rmw == rcw && conf->rmw_level == PARITY_PREFER_RMW)) && rmw > 0) { in handle_stripe_dirtying()
4244 if (conf->mddev->queue) in handle_stripe_dirtying()
4245 blk_add_trace_msg(conf->mddev->queue, in handle_stripe_dirtying()
4266 &conf->cache_state)) { in handle_stripe_dirtying()
4280 if (((dev->towrite && !delay_towrite(conf, dev, s)) || in handle_stripe_dirtying()
4299 if ((rcw < rmw || (rcw == rmw && conf->rmw_level != PARITY_PREFER_RMW)) && rcw > 0) { in handle_stripe_dirtying()
4324 if (rcw && conf->mddev->queue) in handle_stripe_dirtying()
4325 blk_add_trace_msg(conf->mddev->queue, "raid5 rcw %llu %d %d %d", in handle_stripe_dirtying()
4351 static void handle_parity_checks5(struct r5conf *conf, struct stripe_head *sh, in handle_parity_checks5() argument
4413 atomic64_add(RAID5_STRIPE_SECTORS(conf), &conf->mddev->resync_mismatches); in handle_parity_checks5()
4414 if (test_bit(MD_RECOVERY_CHECK, &conf->mddev->recovery)) { in handle_parity_checks5()
4418 "%llu-%llu\n", mdname(conf->mddev), in handle_parity_checks5()
4421 RAID5_STRIPE_SECTORS(conf)); in handle_parity_checks5()
4444 static void handle_parity_checks6(struct r5conf *conf, struct stripe_head *sh, in handle_parity_checks6() argument
4540 mdname(conf->mddev), in handle_parity_checks6()
4578 atomic64_add(RAID5_STRIPE_SECTORS(conf), &conf->mddev->resync_mismatches); in handle_parity_checks6()
4579 if (test_bit(MD_RECOVERY_CHECK, &conf->mddev->recovery)) { in handle_parity_checks6()
4583 "%llu-%llu\n", mdname(conf->mddev), in handle_parity_checks6()
4586 RAID5_STRIPE_SECTORS(conf)); in handle_parity_checks6()
4621 static void handle_stripe_expansion(struct r5conf *conf, struct stripe_head *sh) in handle_stripe_expansion() argument
4638 sector_t s = raid5_compute_sector(conf, bn, 0, in handle_stripe_expansion()
4640 sh2 = raid5_get_active_stripe(conf, NULL, s, in handle_stripe_expansion()
4659 sh->dev[i].offset, RAID5_STRIPE_SIZE(conf), in handle_stripe_expansion()
4664 for (j = 0; j < conf->raid_disks; j++) in handle_stripe_expansion()
4669 if (j == conf->raid_disks) { in handle_stripe_expansion()
4696 struct r5conf *conf = sh->raid_conf; in analyse_stripe() local
4708 s->log_failed = r5l_log_disk_error(conf); in analyse_stripe()
4756 rdev = rcu_dereference(conf->disks[i].replacement); in analyse_stripe()
4758 rdev->recovery_offset >= sh->sector + RAID5_STRIPE_SECTORS(conf) && in analyse_stripe()
4759 !is_badblock(rdev, sh->sector, RAID5_STRIPE_SECTORS(conf), in analyse_stripe()
4767 rdev = rcu_dereference(conf->disks[i].rdev); in analyse_stripe()
4773 is_bad = is_badblock(rdev, sh->sector, RAID5_STRIPE_SECTORS(conf), in analyse_stripe()
4800 else if (sh->sector + RAID5_STRIPE_SECTORS(conf) <= rdev->recovery_offset) in analyse_stripe()
4815 conf->disks[i].rdev); in analyse_stripe()
4828 conf->disks[i].rdev); in analyse_stripe()
4837 conf->disks[i].replacement); in analyse_stripe()
4859 conf->disks[i].replacement); in analyse_stripe()
4880 sh->sector >= conf->mddev->recovery_cp || in analyse_stripe()
4881 test_bit(MD_RECOVERY_REQUESTED, &(conf->mddev->recovery))) in analyse_stripe()
4991 struct r5conf *conf = sh->raid_conf; in handle_stripe() local
5048 test_bit(MD_SB_CHANGE_PENDING, &conf->mddev->sb_flags)) { in handle_stripe()
5060 rdev_dec_pending(s.blocked_rdev, conf->mddev); in handle_stripe()
5080 if (s.failed > conf->max_degraded || in handle_stripe()
5086 handle_failed_stripe(conf, sh, &s, disks); in handle_stripe()
5088 handle_failed_sync(conf, sh, &s); in handle_stripe()
5141 || conf->level < 6; in handle_stripe()
5152 handle_stripe_clean_event(conf, sh, disks); in handle_stripe()
5155 r5c_handle_cached_data_endio(conf, sh, disks); in handle_stripe()
5174 r5c_finish_stripe_write_out(conf, sh, &s); in handle_stripe()
5186 if (!r5c_is_writeback(conf->log)) { in handle_stripe()
5188 handle_stripe_dirtying(conf, sh, &s, disks); in handle_stripe()
5194 ret = r5c_try_caching_write(conf, sh, &s, in handle_stripe()
5207 ret = handle_stripe_dirtying(conf, sh, &s, in handle_stripe()
5224 if (conf->level == 6) in handle_stripe()
5225 handle_parity_checks6(conf, sh, &s, disks); in handle_stripe()
5227 handle_parity_checks5(conf, sh, &s, disks); in handle_stripe()
5234 for (i = 0; i < conf->raid_disks; i++) in handle_stripe()
5248 md_done_sync(conf->mddev, RAID5_STRIPE_SECTORS(conf), 1); in handle_stripe()
5251 wake_up(&conf->wait_for_overlap); in handle_stripe()
5257 if (s.failed <= conf->max_degraded && !conf->mddev->ro) in handle_stripe()
5278 = raid5_get_active_stripe(conf, NULL, sh->sector, in handle_stripe()
5289 atomic_inc(&conf->preread_active_stripes); in handle_stripe()
5298 for (i = conf->raid_disks; i--; ) { in handle_stripe()
5308 sh->disks = conf->raid_disks; in handle_stripe()
5309 stripe_set_idx(sh->sector, conf, 0, sh); in handle_stripe()
5313 atomic_dec(&conf->reshape_stripes); in handle_stripe()
5314 wake_up(&conf->wait_for_overlap); in handle_stripe()
5315 md_done_sync(conf->mddev, RAID5_STRIPE_SECTORS(conf), 1); in handle_stripe()
5320 handle_stripe_expansion(conf, sh); in handle_stripe()
5325 if (conf->mddev->external) in handle_stripe()
5327 conf->mddev); in handle_stripe()
5334 conf->mddev); in handle_stripe()
5343 rdev = rdev_pend_deref(conf->disks[i].rdev); in handle_stripe()
5345 RAID5_STRIPE_SECTORS(conf), 0)) in handle_stripe()
5346 md_error(conf->mddev, rdev); in handle_stripe()
5347 rdev_dec_pending(rdev, conf->mddev); in handle_stripe()
5350 rdev = rdev_pend_deref(conf->disks[i].rdev); in handle_stripe()
5352 RAID5_STRIPE_SECTORS(conf), 0); in handle_stripe()
5353 rdev_dec_pending(rdev, conf->mddev); in handle_stripe()
5356 rdev = rdev_pend_deref(conf->disks[i].replacement); in handle_stripe()
5359 rdev = rdev_pend_deref(conf->disks[i].rdev); in handle_stripe()
5361 RAID5_STRIPE_SECTORS(conf), 0); in handle_stripe()
5362 rdev_dec_pending(rdev, conf->mddev); in handle_stripe()
5376 atomic_dec(&conf->preread_active_stripes); in handle_stripe()
5377 if (atomic_read(&conf->preread_active_stripes) < in handle_stripe()
5379 md_wakeup_thread(conf->mddev->thread); in handle_stripe()
5385 static void raid5_activate_delayed(struct r5conf *conf) in raid5_activate_delayed() argument
5386 __must_hold(&conf->device_lock) in raid5_activate_delayed()
5388 if (atomic_read(&conf->preread_active_stripes) < IO_THRESHOLD) { in raid5_activate_delayed()
5389 while (!list_empty(&conf->delayed_list)) { in raid5_activate_delayed()
5390 struct list_head *l = conf->delayed_list.next; in raid5_activate_delayed()
5396 atomic_inc(&conf->preread_active_stripes); in raid5_activate_delayed()
5397 list_add_tail(&sh->lru, &conf->hold_list); in raid5_activate_delayed()
5403 static void activate_bit_delay(struct r5conf *conf, in activate_bit_delay() argument
5405 __must_hold(&conf->device_lock) in activate_bit_delay()
5408 list_add(&head, &conf->bitmap_list); in activate_bit_delay()
5409 list_del_init(&conf->bitmap_list); in activate_bit_delay()
5416 __release_stripe(conf, sh, &temp_inactive_list[hash]); in activate_bit_delay()
5422 struct r5conf *conf = mddev->private; in in_chunk_boundary() local
5427 chunk_sectors = min(conf->chunk_sectors, conf->prev_chunk_sectors); in in_chunk_boundary()
5436 static void add_bio_to_retry(struct bio *bi,struct r5conf *conf) in add_bio_to_retry() argument
5440 spin_lock_irqsave(&conf->device_lock, flags); in add_bio_to_retry()
5442 bi->bi_next = conf->retry_read_aligned_list; in add_bio_to_retry()
5443 conf->retry_read_aligned_list = bi; in add_bio_to_retry()
5445 spin_unlock_irqrestore(&conf->device_lock, flags); in add_bio_to_retry()
5446 md_wakeup_thread(conf->mddev->thread); in add_bio_to_retry()
5449 static struct bio *remove_bio_from_retry(struct r5conf *conf, in remove_bio_from_retry() argument
5454 bi = conf->retry_read_aligned; in remove_bio_from_retry()
5456 *offset = conf->retry_read_offset; in remove_bio_from_retry()
5457 conf->retry_read_aligned = NULL; in remove_bio_from_retry()
5460 bi = conf->retry_read_aligned_list; in remove_bio_from_retry()
5462 conf->retry_read_aligned_list = bi->bi_next; in remove_bio_from_retry()
5481 struct r5conf *conf = mddev->private; in raid5_align_endio() local
5486 rdev_dec_pending(rdev, conf->mddev); in raid5_align_endio()
5490 if (atomic_dec_and_test(&conf->active_aligned_reads)) in raid5_align_endio()
5491 wake_up(&conf->wait_for_quiescent); in raid5_align_endio()
5497 add_bio_to_retry(raid_bi, conf); in raid5_align_endio()
5502 struct r5conf *conf = mddev->private; in raid5_read_one_chunk() local
5514 sector = raid5_compute_sector(conf, raid_bio->bi_iter.bi_sector, 0, in raid5_read_one_chunk()
5519 if (r5c_big_stripe_cached(conf, sector)) in raid5_read_one_chunk()
5522 rdev = rcu_dereference(conf->disks[dd_idx].replacement); in raid5_read_one_chunk()
5525 rdev = rcu_dereference(conf->disks[dd_idx].rdev); in raid5_read_one_chunk()
5556 if (conf->quiesce == 0) { in raid5_read_one_chunk()
5557 atomic_inc(&conf->active_aligned_reads); in raid5_read_one_chunk()
5561 if (!did_inc || smp_load_acquire(&conf->quiesce) != 0) { in raid5_read_one_chunk()
5565 if (did_inc && atomic_dec_and_test(&conf->active_aligned_reads)) in raid5_read_one_chunk()
5566 wake_up(&conf->wait_for_quiescent); in raid5_read_one_chunk()
5567 spin_lock_irq(&conf->device_lock); in raid5_read_one_chunk()
5568 wait_event_lock_irq(conf->wait_for_quiescent, conf->quiesce == 0, in raid5_read_one_chunk()
5569 conf->device_lock); in raid5_read_one_chunk()
5570 atomic_inc(&conf->active_aligned_reads); in raid5_read_one_chunk()
5571 spin_unlock_irq(&conf->device_lock); in raid5_read_one_chunk()
5593 struct r5conf *conf = mddev->private; in chunk_aligned_read() local
5594 split = bio_split(raid_bio, sectors, GFP_NOIO, &conf->bio_split); in chunk_aligned_read()
5616 static struct stripe_head *__get_priority_stripe(struct r5conf *conf, int group) in __get_priority_stripe() argument
5617 __must_hold(&conf->device_lock) in __get_priority_stripe()
5622 bool second_try = !r5c_is_writeback(conf->log) && in __get_priority_stripe()
5623 !r5l_log_disk_error(conf); in __get_priority_stripe()
5624 bool try_loprio = test_bit(R5C_LOG_TIGHT, &conf->cache_state) || in __get_priority_stripe()
5625 r5l_log_disk_error(conf); in __get_priority_stripe()
5630 if (conf->worker_cnt_per_group == 0) { in __get_priority_stripe()
5631 handle_list = try_loprio ? &conf->loprio_list : in __get_priority_stripe()
5632 &conf->handle_list; in __get_priority_stripe()
5634 handle_list = try_loprio ? &conf->worker_groups[group].loprio_list : in __get_priority_stripe()
5635 &conf->worker_groups[group].handle_list; in __get_priority_stripe()
5636 wg = &conf->worker_groups[group]; in __get_priority_stripe()
5639 for (i = 0; i < conf->group_cnt; i++) { in __get_priority_stripe()
5640 handle_list = try_loprio ? &conf->worker_groups[i].loprio_list : in __get_priority_stripe()
5641 &conf->worker_groups[i].handle_list; in __get_priority_stripe()
5642 wg = &conf->worker_groups[i]; in __get_priority_stripe()
5651 list_empty(&conf->hold_list) ? "empty" : "busy", in __get_priority_stripe()
5652 atomic_read(&conf->pending_full_writes), conf->bypass_count); in __get_priority_stripe()
5657 if (list_empty(&conf->hold_list)) in __get_priority_stripe()
5658 conf->bypass_count = 0; in __get_priority_stripe()
5660 if (conf->hold_list.next == conf->last_hold) in __get_priority_stripe()
5661 conf->bypass_count++; in __get_priority_stripe()
5663 conf->last_hold = conf->hold_list.next; in __get_priority_stripe()
5664 conf->bypass_count -= conf->bypass_threshold; in __get_priority_stripe()
5665 if (conf->bypass_count < 0) in __get_priority_stripe()
5666 conf->bypass_count = 0; in __get_priority_stripe()
5669 } else if (!list_empty(&conf->hold_list) && in __get_priority_stripe()
5670 ((conf->bypass_threshold && in __get_priority_stripe()
5671 conf->bypass_count > conf->bypass_threshold) || in __get_priority_stripe()
5672 atomic_read(&conf->pending_full_writes) == 0)) { in __get_priority_stripe()
5674 list_for_each_entry(tmp, &conf->hold_list, lru) { in __get_priority_stripe()
5675 if (conf->worker_cnt_per_group == 0 || in __get_priority_stripe()
5685 conf->bypass_count -= conf->bypass_threshold; in __get_priority_stripe()
5686 if (conf->bypass_count < 0) in __get_priority_stripe()
5687 conf->bypass_count = 0; in __get_priority_stripe()
5721 struct r5conf *conf = mddev->private; in raid5_unplug() local
5726 spin_lock_irq(&conf->device_lock); in raid5_unplug()
5742 __release_stripe(conf, sh, &cb->temp_inactive_list[hash]); in raid5_unplug()
5745 spin_unlock_irq(&conf->device_lock); in raid5_unplug()
5747 release_inactive_stripe_list(conf, cb->temp_inactive_list, in raid5_unplug()
5784 struct r5conf *conf = mddev->private; in make_discard_request() local
5797 logical_sector = bi->bi_iter.bi_sector & ~((sector_t)RAID5_STRIPE_SECTORS(conf)-1); in make_discard_request()
5802 stripe_sectors = conf->chunk_sectors * in make_discard_request()
5803 (conf->raid_disks - conf->max_degraded); in make_discard_request()
5808 logical_sector *= conf->chunk_sectors; in make_discard_request()
5809 last_sector *= conf->chunk_sectors; in make_discard_request()
5812 logical_sector += RAID5_STRIPE_SECTORS(conf)) { in make_discard_request()
5816 sh = raid5_get_active_stripe(conf, NULL, logical_sector, 0); in make_discard_request()
5817 prepare_to_wait(&conf->wait_for_overlap, &w, in make_discard_request()
5827 for (d = 0; d < conf->raid_disks; d++) { in make_discard_request()
5839 finish_wait(&conf->wait_for_overlap, &w); in make_discard_request()
5841 for (d = 0; d < conf->raid_disks; d++) { in make_discard_request()
5851 if (conf->mddev->bitmap) { in make_discard_request()
5853 d < conf->raid_disks - conf->max_degraded; in make_discard_request()
5857 RAID5_STRIPE_SECTORS(conf), in make_discard_request()
5859 sh->bm_seq = conf->seq_flush + 1; in make_discard_request()
5866 atomic_inc(&conf->preread_active_stripes); in make_discard_request()
5887 static bool stripe_ahead_of_reshape(struct mddev *mddev, struct r5conf *conf, in stripe_ahead_of_reshape() argument
5902 spin_lock_irq(&conf->device_lock); in stripe_ahead_of_reshape()
5905 conf->reshape_progress)) in stripe_ahead_of_reshape()
5909 spin_unlock_irq(&conf->device_lock); in stripe_ahead_of_reshape()
5914 static int add_all_stripe_bios(struct r5conf *conf, in add_all_stripe_bios() argument
5955 RAID5_STRIPE_SHIFT(conf), ctx->sectors_to_do); in add_all_stripe_bios()
5977 struct r5conf *conf, struct stripe_request_ctx *ctx, in make_stripe_request() argument
5987 seq = read_seqcount_begin(&conf->gen_lock); in make_stripe_request()
5989 if (unlikely(conf->reshape_progress != MaxSector)) { in make_stripe_request()
5999 spin_lock_irq(&conf->device_lock); in make_stripe_request()
6001 conf->reshape_progress)) { in make_stripe_request()
6005 conf->reshape_safe)) { in make_stripe_request()
6006 spin_unlock_irq(&conf->device_lock); in make_stripe_request()
6011 spin_unlock_irq(&conf->device_lock); in make_stripe_request()
6014 new_sector = raid5_compute_sector(conf, logical_sector, previous, in make_stripe_request()
6023 sh = raid5_get_active_stripe(conf, ctx, new_sector, flags); in make_stripe_request()
6031 stripe_ahead_of_reshape(mddev, conf, sh)) { in make_stripe_request()
6044 if (read_seqcount_retry(&conf->gen_lock, seq)) { in make_stripe_request()
6051 !add_all_stripe_bios(conf, ctx, sh, bi, rw, previous)) { in make_stripe_request()
6062 stripe_add_to_batch_list(conf, sh, ctx->batch_last); in make_stripe_request()
6080 atomic_inc(&conf->preread_active_stripes); in make_stripe_request()
6103 static sector_t raid5_bio_lowest_chunk_sector(struct r5conf *conf, in raid5_bio_lowest_chunk_sector() argument
6106 int sectors_per_chunk = conf->chunk_sectors; in raid5_bio_lowest_chunk_sector()
6107 int raid_disks = conf->raid_disks; in raid5_bio_lowest_chunk_sector()
6111 sector_t r_sector = bi->bi_iter.bi_sector & ~((sector_t)RAID5_STRIPE_SECTORS(conf)-1); in raid5_bio_lowest_chunk_sector()
6115 sector = raid5_compute_sector(conf, r_sector, 0, &dd_idx, &sh); in raid5_bio_lowest_chunk_sector()
6134 struct r5conf *conf = mddev->private; in raid5_make_request() local
6142 int ret = log_handle_flush_request(conf, bi); in raid5_make_request()
6178 logical_sector = bi->bi_iter.bi_sector & ~((sector_t)RAID5_STRIPE_SECTORS(conf)-1); in raid5_make_request()
6184 RAID5_STRIPE_SECTORS(conf)); in raid5_make_request()
6192 (conf->reshape_progress != MaxSector) && in raid5_make_request()
6193 !ahead_of_reshape(mddev, logical_sector, conf->reshape_progress) && in raid5_make_request()
6194 ahead_of_reshape(mddev, logical_sector, conf->reshape_safe)) { in raid5_make_request()
6209 if (likely(conf->reshape_progress == MaxSector)) in raid5_make_request()
6210 logical_sector = raid5_bio_lowest_chunk_sector(conf, bi); in raid5_make_request()
6211 s = (logical_sector - ctx.first_sector) >> RAID5_STRIPE_SHIFT(conf); in raid5_make_request()
6213 add_wait_queue(&conf->wait_for_overlap, &wait); in raid5_make_request()
6215 res = make_stripe_request(mddev, conf, &ctx, logical_sector, in raid5_make_request()
6246 (s << RAID5_STRIPE_SHIFT(conf)); in raid5_make_request()
6248 remove_wait_queue(&conf->wait_for_overlap, &wait); in raid5_make_request()
6272 struct r5conf *conf = mddev->private; in reshape_request() local
6276 int raid_disks = conf->previous_raid_disks; in reshape_request()
6277 int data_disks = raid_disks - conf->max_degraded; in reshape_request()
6278 int new_data_disks = conf->raid_disks - conf->max_degraded; in reshape_request()
6290 conf->reshape_progress < raid5_size(mddev, 0, 0)) { in reshape_request()
6292 - conf->reshape_progress; in reshape_request()
6294 conf->reshape_progress == MaxSector) { in reshape_request()
6298 conf->reshape_progress > 0) in reshape_request()
6299 sector_nr = conf->reshape_progress; in reshape_request()
6315 reshape_sectors = max(conf->chunk_sectors, conf->prev_chunk_sectors); in reshape_request()
6323 writepos = conf->reshape_progress; in reshape_request()
6325 readpos = conf->reshape_progress; in reshape_request()
6327 safepos = conf->reshape_safe; in reshape_request()
6348 BUG_ON(conf->reshape_progress == 0); in reshape_request()
6379 if (conf->min_offset_diff < 0) { in reshape_request()
6380 safepos += -conf->min_offset_diff; in reshape_request()
6381 readpos += -conf->min_offset_diff; in reshape_request()
6383 writepos += conf->min_offset_diff; in reshape_request()
6388 time_after(jiffies, conf->reshape_checkpoint + 10*HZ)) { in reshape_request()
6390 wait_event(conf->wait_for_overlap, in reshape_request()
6391 atomic_read(&conf->reshape_stripes)==0 in reshape_request()
6393 if (atomic_read(&conf->reshape_stripes) != 0) in reshape_request()
6395 mddev->reshape_position = conf->reshape_progress; in reshape_request()
6406 conf->reshape_checkpoint = jiffies; in reshape_request()
6413 spin_lock_irq(&conf->device_lock); in reshape_request()
6414 conf->reshape_safe = mddev->reshape_position; in reshape_request()
6415 spin_unlock_irq(&conf->device_lock); in reshape_request()
6416 wake_up(&conf->wait_for_overlap); in reshape_request()
6421 for (i = 0; i < reshape_sectors; i += RAID5_STRIPE_SECTORS(conf)) { in reshape_request()
6424 sh = raid5_get_active_stripe(conf, NULL, stripe_addr+i, in reshape_request()
6427 atomic_inc(&conf->reshape_stripes); in reshape_request()
6435 if (conf->level == 6 && in reshape_request()
6443 memset(page_address(sh->dev[j].page), 0, RAID5_STRIPE_SIZE(conf)); in reshape_request()
6453 spin_lock_irq(&conf->device_lock); in reshape_request()
6455 conf->reshape_progress -= reshape_sectors * new_data_disks; in reshape_request()
6457 conf->reshape_progress += reshape_sectors * new_data_disks; in reshape_request()
6458 spin_unlock_irq(&conf->device_lock); in reshape_request()
6465 raid5_compute_sector(conf, stripe_addr*(new_data_disks), in reshape_request()
6468 raid5_compute_sector(conf, ((stripe_addr+reshape_sectors) in reshape_request()
6474 sh = raid5_get_active_stripe(conf, NULL, first_sector, in reshape_request()
6479 first_sector += RAID5_STRIPE_SECTORS(conf); in reshape_request()
6499 wait_event(conf->wait_for_overlap, in reshape_request()
6500 atomic_read(&conf->reshape_stripes) == 0 in reshape_request()
6502 if (atomic_read(&conf->reshape_stripes) != 0) in reshape_request()
6504 mddev->reshape_position = conf->reshape_progress; in reshape_request()
6514 conf->reshape_checkpoint = jiffies; in reshape_request()
6522 spin_lock_irq(&conf->device_lock); in reshape_request()
6523 conf->reshape_safe = mddev->reshape_position; in reshape_request()
6524 spin_unlock_irq(&conf->device_lock); in reshape_request()
6525 wake_up(&conf->wait_for_overlap); in reshape_request()
6535 struct r5conf *conf = mddev->private; in raid5_sync_request() local
6546 end_reshape(conf); in raid5_sync_request()
6554 conf->fullsync = 0; in raid5_sync_request()
6561 wait_event(conf->wait_for_overlap, conf->quiesce != 2); in raid5_sync_request()
6576 if (mddev->degraded >= conf->max_degraded && in raid5_sync_request()
6583 !conf->fullsync && in raid5_sync_request()
6585 sync_blocks >= RAID5_STRIPE_SECTORS(conf)) { in raid5_sync_request()
6587 do_div(sync_blocks, RAID5_STRIPE_SECTORS(conf)); in raid5_sync_request()
6590 return sync_blocks * RAID5_STRIPE_SECTORS(conf); in raid5_sync_request()
6595 sh = raid5_get_active_stripe(conf, NULL, sector_nr, in raid5_sync_request()
6598 sh = raid5_get_active_stripe(conf, NULL, sector_nr, 0); in raid5_sync_request()
6609 for (i = 0; i < conf->raid_disks; i++) { in raid5_sync_request()
6610 struct md_rdev *rdev = rcu_dereference(conf->disks[i].rdev); in raid5_sync_request()
6624 return RAID5_STRIPE_SECTORS(conf); in raid5_sync_request()
6627 static int retry_aligned_read(struct r5conf *conf, struct bio *raid_bio, in retry_aligned_read() argument
6647 ~((sector_t)RAID5_STRIPE_SECTORS(conf)-1); in retry_aligned_read()
6648 sector = raid5_compute_sector(conf, logical_sector, in retry_aligned_read()
6653 logical_sector += RAID5_STRIPE_SECTORS(conf), in retry_aligned_read()
6654 sector += RAID5_STRIPE_SECTORS(conf), in retry_aligned_read()
6661 sh = raid5_get_active_stripe(conf, NULL, sector, in retry_aligned_read()
6665 conf->retry_read_aligned = raid_bio; in retry_aligned_read()
6666 conf->retry_read_offset = scnt; in retry_aligned_read()
6672 conf->retry_read_aligned = raid_bio; in retry_aligned_read()
6673 conf->retry_read_offset = scnt; in retry_aligned_read()
6685 if (atomic_dec_and_test(&conf->active_aligned_reads)) in retry_aligned_read()
6686 wake_up(&conf->wait_for_quiescent); in retry_aligned_read()
6690 static int handle_active_stripes(struct r5conf *conf, int group, in handle_active_stripes() argument
6693 __must_hold(&conf->device_lock) in handle_active_stripes()
6700 (sh = __get_priority_stripe(conf, group)) != NULL) in handle_active_stripes()
6708 spin_unlock_irq(&conf->device_lock); in handle_active_stripes()
6709 log_flush_stripe_to_raid(conf); in handle_active_stripes()
6710 spin_lock_irq(&conf->device_lock); in handle_active_stripes()
6715 spin_unlock_irq(&conf->device_lock); in handle_active_stripes()
6717 release_inactive_stripe_list(conf, temp_inactive_list, in handle_active_stripes()
6720 r5l_flush_stripe_to_raid(conf->log); in handle_active_stripes()
6722 spin_lock_irq(&conf->device_lock); in handle_active_stripes()
6728 log_write_stripe_run(conf); in handle_active_stripes()
6732 spin_lock_irq(&conf->device_lock); in handle_active_stripes()
6735 __release_stripe(conf, batch[i], &temp_inactive_list[hash]); in handle_active_stripes()
6744 struct r5conf *conf = group->conf; in raid5_do_work() local
6745 struct mddev *mddev = conf->mddev; in raid5_do_work()
6746 int group_id = group - conf->worker_groups; in raid5_do_work()
6754 spin_lock_irq(&conf->device_lock); in raid5_do_work()
6758 released = release_stripe_list(conf, worker->temp_inactive_list); in raid5_do_work()
6760 batch_size = handle_active_stripes(conf, group_id, worker, in raid5_do_work()
6768 conf->device_lock); in raid5_do_work()
6772 spin_unlock_irq(&conf->device_lock); in raid5_do_work()
6774 flush_deferred_bios(conf); in raid5_do_work()
6776 r5l_flush_stripe_to_raid(conf->log); in raid5_do_work()
6794 struct r5conf *conf = mddev->private; in raid5d() local
6804 spin_lock_irq(&conf->device_lock); in raid5d()
6810 released = release_stripe_list(conf, conf->temp_inactive_list); in raid5d()
6812 clear_bit(R5_DID_ALLOC, &conf->cache_state); in raid5d()
6815 !list_empty(&conf->bitmap_list)) { in raid5d()
6817 conf->seq_flush++; in raid5d()
6818 spin_unlock_irq(&conf->device_lock); in raid5d()
6820 spin_lock_irq(&conf->device_lock); in raid5d()
6821 conf->seq_write = conf->seq_flush; in raid5d()
6822 activate_bit_delay(conf, conf->temp_inactive_list); in raid5d()
6824 raid5_activate_delayed(conf); in raid5d()
6826 while ((bio = remove_bio_from_retry(conf, &offset))) { in raid5d()
6828 spin_unlock_irq(&conf->device_lock); in raid5d()
6829 ok = retry_aligned_read(conf, bio, offset); in raid5d()
6830 spin_lock_irq(&conf->device_lock); in raid5d()
6836 batch_size = handle_active_stripes(conf, ANY_GROUP, NULL, in raid5d()
6837 conf->temp_inactive_list); in raid5d()
6843 spin_unlock_irq(&conf->device_lock); in raid5d()
6845 spin_lock_irq(&conf->device_lock); in raid5d()
6857 conf->device_lock); in raid5d()
6861 spin_unlock_irq(&conf->device_lock); in raid5d()
6862 if (test_and_clear_bit(R5_ALLOC_MORE, &conf->cache_state) && in raid5d()
6863 mutex_trylock(&conf->cache_size_mutex)) { in raid5d()
6864 grow_one_stripe(conf, __GFP_NOWARN); in raid5d()
6868 set_bit(R5_DID_ALLOC, &conf->cache_state); in raid5d()
6869 mutex_unlock(&conf->cache_size_mutex); in raid5d()
6872 flush_deferred_bios(conf); in raid5d()
6874 r5l_flush_stripe_to_raid(conf->log); in raid5d()
6885 struct r5conf *conf; in raid5_show_stripe_cache_size() local
6888 conf = mddev->private; in raid5_show_stripe_cache_size()
6889 if (conf) in raid5_show_stripe_cache_size()
6890 ret = sprintf(page, "%d\n", conf->min_nr_stripes); in raid5_show_stripe_cache_size()
6899 struct r5conf *conf = mddev->private; in raid5_set_cache_size() local
6904 conf->min_nr_stripes = size; in raid5_set_cache_size()
6905 mutex_lock(&conf->cache_size_mutex); in raid5_set_cache_size()
6906 while (size < conf->max_nr_stripes && in raid5_set_cache_size()
6907 drop_one_stripe(conf)) in raid5_set_cache_size()
6909 mutex_unlock(&conf->cache_size_mutex); in raid5_set_cache_size()
6913 mutex_lock(&conf->cache_size_mutex); in raid5_set_cache_size()
6914 while (size > conf->max_nr_stripes) in raid5_set_cache_size()
6915 if (!grow_one_stripe(conf, GFP_KERNEL)) { in raid5_set_cache_size()
6916 conf->min_nr_stripes = conf->max_nr_stripes; in raid5_set_cache_size()
6920 mutex_unlock(&conf->cache_size_mutex); in raid5_set_cache_size()
6929 struct r5conf *conf; in raid5_store_stripe_cache_size() local
6940 conf = mddev->private; in raid5_store_stripe_cache_size()
6941 if (!conf) in raid5_store_stripe_cache_size()
6958 struct r5conf *conf = mddev->private; in raid5_show_rmw_level() local
6959 if (conf) in raid5_show_rmw_level()
6960 return sprintf(page, "%d\n", conf->rmw_level); in raid5_show_rmw_level()
6968 struct r5conf *conf = mddev->private; in raid5_store_rmw_level() local
6971 if (!conf) in raid5_store_rmw_level()
6988 conf->rmw_level = new; in raid5_store_rmw_level()
7000 struct r5conf *conf; in raid5_show_stripe_size() local
7004 conf = mddev->private; in raid5_show_stripe_size()
7005 if (conf) in raid5_show_stripe_size()
7006 ret = sprintf(page, "%lu\n", RAID5_STRIPE_SIZE(conf)); in raid5_show_stripe_size()
7015 struct r5conf *conf; in raid5_store_stripe_size() local
7039 conf = mddev->private; in raid5_store_stripe_size()
7040 if (!conf) { in raid5_store_stripe_size()
7045 if (new == conf->stripe_size) in raid5_store_stripe_size()
7049 conf->stripe_size, new); in raid5_store_stripe_size()
7060 mutex_lock(&conf->cache_size_mutex); in raid5_store_stripe_size()
7061 size = conf->max_nr_stripes; in raid5_store_stripe_size()
7063 shrink_stripes(conf); in raid5_store_stripe_size()
7065 conf->stripe_size = new; in raid5_store_stripe_size()
7066 conf->stripe_shift = ilog2(new) - 9; in raid5_store_stripe_size()
7067 conf->stripe_sectors = new >> 9; in raid5_store_stripe_size()
7068 if (grow_stripes(conf, size)) { in raid5_store_stripe_size()
7073 mutex_unlock(&conf->cache_size_mutex); in raid5_store_stripe_size()
7095 struct r5conf *conf; in raid5_show_preread_threshold() local
7098 conf = mddev->private; in raid5_show_preread_threshold()
7099 if (conf) in raid5_show_preread_threshold()
7100 ret = sprintf(page, "%d\n", conf->bypass_threshold); in raid5_show_preread_threshold()
7108 struct r5conf *conf; in raid5_store_preread_threshold() local
7120 conf = mddev->private; in raid5_store_preread_threshold()
7121 if (!conf) in raid5_store_preread_threshold()
7123 else if (new > conf->min_nr_stripes) in raid5_store_preread_threshold()
7126 conf->bypass_threshold = new; in raid5_store_preread_threshold()
7140 struct r5conf *conf; in raid5_show_skip_copy() local
7143 conf = mddev->private; in raid5_show_skip_copy()
7144 if (conf) in raid5_show_skip_copy()
7145 ret = sprintf(page, "%d\n", conf->skip_copy); in raid5_show_skip_copy()
7153 struct r5conf *conf; in raid5_store_skip_copy() local
7166 conf = mddev->private; in raid5_store_skip_copy()
7167 if (!conf) in raid5_store_skip_copy()
7169 else if (new != conf->skip_copy) { in raid5_store_skip_copy()
7173 conf->skip_copy = new; in raid5_store_skip_copy()
7192 struct r5conf *conf = mddev->private; in stripe_cache_active_show() local
7193 if (conf) in stripe_cache_active_show()
7194 return sprintf(page, "%d\n", atomic_read(&conf->active_stripes)); in stripe_cache_active_show()
7205 struct r5conf *conf; in raid5_show_group_thread_cnt() local
7208 conf = mddev->private; in raid5_show_group_thread_cnt()
7209 if (conf) in raid5_show_group_thread_cnt()
7210 ret = sprintf(page, "%d\n", conf->worker_cnt_per_group); in raid5_show_group_thread_cnt()
7215 static int alloc_thread_groups(struct r5conf *conf, int cnt,
7221 struct r5conf *conf; in raid5_store_group_thread_cnt() local
7238 conf = mddev->private; in raid5_store_group_thread_cnt()
7239 if (!conf) in raid5_store_group_thread_cnt()
7241 else if (new != conf->worker_cnt_per_group) { in raid5_store_group_thread_cnt()
7244 old_groups = conf->worker_groups; in raid5_store_group_thread_cnt()
7248 err = alloc_thread_groups(conf, new, &group_cnt, &new_groups); in raid5_store_group_thread_cnt()
7250 spin_lock_irq(&conf->device_lock); in raid5_store_group_thread_cnt()
7251 conf->group_cnt = group_cnt; in raid5_store_group_thread_cnt()
7252 conf->worker_cnt_per_group = new; in raid5_store_group_thread_cnt()
7253 conf->worker_groups = new_groups; in raid5_store_group_thread_cnt()
7254 spin_unlock_irq(&conf->device_lock); in raid5_store_group_thread_cnt()
7289 static int alloc_thread_groups(struct r5conf *conf, int cnt, int *group_cnt, in alloc_thread_groups() argument
7318 group->conf = conf; in alloc_thread_groups()
7334 static void free_thread_groups(struct r5conf *conf) in free_thread_groups() argument
7336 if (conf->worker_groups) in free_thread_groups()
7337 kfree(conf->worker_groups[0].workers); in free_thread_groups()
7338 kfree(conf->worker_groups); in free_thread_groups()
7339 conf->worker_groups = NULL; in free_thread_groups()
7345 struct r5conf *conf = mddev->private; in raid5_size() local
7351 raid_disks = min(conf->raid_disks, conf->previous_raid_disks); in raid5_size()
7353 sectors &= ~((sector_t)conf->chunk_sectors - 1); in raid5_size()
7354 sectors &= ~((sector_t)conf->prev_chunk_sectors - 1); in raid5_size()
7355 return sectors * (raid_disks - conf->max_degraded); in raid5_size()
7358 static void free_scratch_buffer(struct r5conf *conf, struct raid5_percpu *percpu) in free_scratch_buffer() argument
7366 static int alloc_scratch_buffer(struct r5conf *conf, struct raid5_percpu *percpu) in alloc_scratch_buffer() argument
7368 if (conf->level == 6 && !percpu->spare_page) { in alloc_scratch_buffer()
7375 max(conf->raid_disks, in alloc_scratch_buffer()
7376 conf->previous_raid_disks), in alloc_scratch_buffer()
7377 max(conf->chunk_sectors, in alloc_scratch_buffer()
7378 conf->prev_chunk_sectors) in alloc_scratch_buffer()
7379 / RAID5_STRIPE_SECTORS(conf))) { in alloc_scratch_buffer()
7380 free_scratch_buffer(conf, percpu); in alloc_scratch_buffer()
7390 struct r5conf *conf = hlist_entry_safe(node, struct r5conf, node); in raid456_cpu_dead() local
7392 free_scratch_buffer(conf, per_cpu_ptr(conf->percpu, cpu)); in raid456_cpu_dead()
7396 static void raid5_free_percpu(struct r5conf *conf) in raid5_free_percpu() argument
7398 if (!conf->percpu) in raid5_free_percpu()
7401 cpuhp_state_remove_instance(CPUHP_MD_RAID5_PREPARE, &conf->node); in raid5_free_percpu()
7402 free_percpu(conf->percpu); in raid5_free_percpu()
7405 static void free_conf(struct r5conf *conf) in free_conf() argument
7409 log_exit(conf); in free_conf()
7411 unregister_shrinker(&conf->shrinker); in free_conf()
7412 free_thread_groups(conf); in free_conf()
7413 shrink_stripes(conf); in free_conf()
7414 raid5_free_percpu(conf); in free_conf()
7415 for (i = 0; i < conf->pool_size; i++) in free_conf()
7416 if (conf->disks[i].extra_page) in free_conf()
7417 put_page(conf->disks[i].extra_page); in free_conf()
7418 kfree(conf->disks); in free_conf()
7419 bioset_exit(&conf->bio_split); in free_conf()
7420 kfree(conf->stripe_hashtbl); in free_conf()
7421 kfree(conf->pending_data); in free_conf()
7422 kfree(conf); in free_conf()
7427 struct r5conf *conf = hlist_entry_safe(node, struct r5conf, node); in raid456_cpu_up_prepare() local
7428 struct raid5_percpu *percpu = per_cpu_ptr(conf->percpu, cpu); in raid456_cpu_up_prepare()
7430 if (alloc_scratch_buffer(conf, percpu)) { in raid456_cpu_up_prepare()
7438 static int raid5_alloc_percpu(struct r5conf *conf) in raid5_alloc_percpu() argument
7442 conf->percpu = alloc_percpu(struct raid5_percpu); in raid5_alloc_percpu()
7443 if (!conf->percpu) in raid5_alloc_percpu()
7446 err = cpuhp_state_add_instance(CPUHP_MD_RAID5_PREPARE, &conf->node); in raid5_alloc_percpu()
7448 conf->scribble_disks = max(conf->raid_disks, in raid5_alloc_percpu()
7449 conf->previous_raid_disks); in raid5_alloc_percpu()
7450 conf->scribble_sectors = max(conf->chunk_sectors, in raid5_alloc_percpu()
7451 conf->prev_chunk_sectors); in raid5_alloc_percpu()
7459 struct r5conf *conf = container_of(shrink, struct r5conf, shrinker); in raid5_cache_scan() local
7462 if (mutex_trylock(&conf->cache_size_mutex)) { in raid5_cache_scan()
7465 conf->max_nr_stripes > conf->min_nr_stripes) { in raid5_cache_scan()
7466 if (drop_one_stripe(conf) == 0) { in raid5_cache_scan()
7472 mutex_unlock(&conf->cache_size_mutex); in raid5_cache_scan()
7480 struct r5conf *conf = container_of(shrink, struct r5conf, shrinker); in raid5_cache_count() local
7482 if (conf->max_nr_stripes < conf->min_nr_stripes) in raid5_cache_count()
7485 return conf->max_nr_stripes - conf->min_nr_stripes; in raid5_cache_count()
7490 struct r5conf *conf; in setup_conf() local
7529 conf = kzalloc(sizeof(struct r5conf), GFP_KERNEL); in setup_conf()
7530 if (conf == NULL) in setup_conf()
7534 conf->stripe_size = DEFAULT_STRIPE_SIZE; in setup_conf()
7535 conf->stripe_shift = ilog2(DEFAULT_STRIPE_SIZE) - 9; in setup_conf()
7536 conf->stripe_sectors = DEFAULT_STRIPE_SIZE >> 9; in setup_conf()
7538 INIT_LIST_HEAD(&conf->free_list); in setup_conf()
7539 INIT_LIST_HEAD(&conf->pending_list); in setup_conf()
7540 conf->pending_data = kcalloc(PENDING_IO_MAX, in setup_conf()
7543 if (!conf->pending_data) in setup_conf()
7546 list_add(&conf->pending_data[i].sibling, &conf->free_list); in setup_conf()
7548 if (!alloc_thread_groups(conf, 0, &group_cnt, &new_group)) { in setup_conf()
7549 conf->group_cnt = group_cnt; in setup_conf()
7550 conf->worker_cnt_per_group = 0; in setup_conf()
7551 conf->worker_groups = new_group; in setup_conf()
7554 spin_lock_init(&conf->device_lock); in setup_conf()
7555 seqcount_spinlock_init(&conf->gen_lock, &conf->device_lock); in setup_conf()
7556 mutex_init(&conf->cache_size_mutex); in setup_conf()
7558 init_waitqueue_head(&conf->wait_for_quiescent); in setup_conf()
7559 init_waitqueue_head(&conf->wait_for_stripe); in setup_conf()
7560 init_waitqueue_head(&conf->wait_for_overlap); in setup_conf()
7561 INIT_LIST_HEAD(&conf->handle_list); in setup_conf()
7562 INIT_LIST_HEAD(&conf->loprio_list); in setup_conf()
7563 INIT_LIST_HEAD(&conf->hold_list); in setup_conf()
7564 INIT_LIST_HEAD(&conf->delayed_list); in setup_conf()
7565 INIT_LIST_HEAD(&conf->bitmap_list); in setup_conf()
7566 init_llist_head(&conf->released_stripes); in setup_conf()
7567 atomic_set(&conf->active_stripes, 0); in setup_conf()
7568 atomic_set(&conf->preread_active_stripes, 0); in setup_conf()
7569 atomic_set(&conf->active_aligned_reads, 0); in setup_conf()
7570 spin_lock_init(&conf->pending_bios_lock); in setup_conf()
7571 conf->batch_bio_dispatch = true; in setup_conf()
7576 conf->batch_bio_dispatch = false; in setup_conf()
7581 conf->bypass_threshold = BYPASS_THRESHOLD; in setup_conf()
7582 conf->recovery_disabled = mddev->recovery_disabled - 1; in setup_conf()
7584 conf->raid_disks = mddev->raid_disks; in setup_conf()
7586 conf->previous_raid_disks = mddev->raid_disks; in setup_conf()
7588 conf->previous_raid_disks = mddev->raid_disks - mddev->delta_disks; in setup_conf()
7589 max_disks = max(conf->raid_disks, conf->previous_raid_disks); in setup_conf()
7591 conf->disks = kcalloc(max_disks, sizeof(struct disk_info), in setup_conf()
7594 if (!conf->disks) in setup_conf()
7598 conf->disks[i].extra_page = alloc_page(GFP_KERNEL); in setup_conf()
7599 if (!conf->disks[i].extra_page) in setup_conf()
7603 ret = bioset_init(&conf->bio_split, BIO_POOL_SIZE, 0, 0); in setup_conf()
7606 conf->mddev = mddev; in setup_conf()
7609 conf->stripe_hashtbl = kzalloc(PAGE_SIZE, GFP_KERNEL); in setup_conf()
7610 if (!conf->stripe_hashtbl) in setup_conf()
7618 spin_lock_init(conf->hash_locks); in setup_conf()
7620 spin_lock_init(conf->hash_locks + i); in setup_conf()
7623 INIT_LIST_HEAD(conf->inactive_list + i); in setup_conf()
7626 INIT_LIST_HEAD(conf->temp_inactive_list + i); in setup_conf()
7628 atomic_set(&conf->r5c_cached_full_stripes, 0); in setup_conf()
7629 INIT_LIST_HEAD(&conf->r5c_full_stripe_list); in setup_conf()
7630 atomic_set(&conf->r5c_cached_partial_stripes, 0); in setup_conf()
7631 INIT_LIST_HEAD(&conf->r5c_partial_stripe_list); in setup_conf()
7632 atomic_set(&conf->r5c_flushing_full_stripes, 0); in setup_conf()
7633 atomic_set(&conf->r5c_flushing_partial_stripes, 0); in setup_conf()
7635 conf->level = mddev->new_level; in setup_conf()
7636 conf->chunk_sectors = mddev->new_chunk_sectors; in setup_conf()
7637 ret = raid5_alloc_percpu(conf); in setup_conf()
7649 disk = conf->disks + raid_disk; in setup_conf()
7666 conf->fullsync = 1; in setup_conf()
7669 conf->level = mddev->new_level; in setup_conf()
7670 if (conf->level == 6) { in setup_conf()
7671 conf->max_degraded = 2; in setup_conf()
7673 conf->rmw_level = PARITY_ENABLE_RMW; in setup_conf()
7675 conf->rmw_level = PARITY_DISABLE_RMW; in setup_conf()
7677 conf->max_degraded = 1; in setup_conf()
7678 conf->rmw_level = PARITY_ENABLE_RMW; in setup_conf()
7680 conf->algorithm = mddev->new_layout; in setup_conf()
7681 conf->reshape_progress = mddev->reshape_position; in setup_conf()
7682 if (conf->reshape_progress != MaxSector) { in setup_conf()
7683 conf->prev_chunk_sectors = mddev->chunk_sectors; in setup_conf()
7684 conf->prev_algo = mddev->layout; in setup_conf()
7686 conf->prev_chunk_sectors = conf->chunk_sectors; in setup_conf()
7687 conf->prev_algo = conf->algorithm; in setup_conf()
7690 conf->min_nr_stripes = NR_STRIPES; in setup_conf()
7693 ((mddev->chunk_sectors << 9) / RAID5_STRIPE_SIZE(conf)) * 4, in setup_conf()
7694 ((mddev->new_chunk_sectors << 9) / RAID5_STRIPE_SIZE(conf)) * 4); in setup_conf()
7695 conf->min_nr_stripes = max(NR_STRIPES, stripes); in setup_conf()
7696 if (conf->min_nr_stripes != NR_STRIPES) in setup_conf()
7698 mdname(mddev), conf->min_nr_stripes); in setup_conf()
7700 memory = conf->min_nr_stripes * (sizeof(struct stripe_head) + in setup_conf()
7702 atomic_set(&conf->empty_inactive_list_nr, NR_STRIPE_HASH_LOCKS); in setup_conf()
7703 if (grow_stripes(conf, conf->min_nr_stripes)) { in setup_conf()
7715 conf->shrinker.seeks = DEFAULT_SEEKS * conf->raid_disks * 4; in setup_conf()
7716 conf->shrinker.scan_objects = raid5_cache_scan; in setup_conf()
7717 conf->shrinker.count_objects = raid5_cache_count; in setup_conf()
7718 conf->shrinker.batch = 128; in setup_conf()
7719 conf->shrinker.flags = 0; in setup_conf()
7720 ret = register_shrinker(&conf->shrinker, "md-raid5:%s", mdname(mddev)); in setup_conf()
7728 rcu_assign_pointer(conf->thread, in setup_conf()
7730 if (!conf->thread) { in setup_conf()
7737 return conf; in setup_conf()
7740 if (conf) in setup_conf()
7741 free_conf(conf); in setup_conf()
7771 static void raid5_set_io_opt(struct r5conf *conf) in raid5_set_io_opt() argument
7773 blk_queue_io_opt(conf->mddev->queue, (conf->chunk_sectors << 9) * in raid5_set_io_opt()
7774 (conf->raid_disks - conf->max_degraded)); in raid5_set_io_opt()
7779 struct r5conf *conf; in raid5_run() local
7919 conf = setup_conf(mddev); in raid5_run()
7921 conf = mddev->private; in raid5_run()
7923 if (IS_ERR(conf)) in raid5_run()
7924 return PTR_ERR(conf); in raid5_run()
7936 conf->min_offset_diff = min_offset_diff; in raid5_run()
7937 rcu_assign_pointer(mddev->thread, conf->thread); in raid5_run()
7938 rcu_assign_pointer(conf->thread, NULL); in raid5_run()
7939 mddev->private = conf; in raid5_run()
7941 for (i = 0; i < conf->raid_disks && conf->previous_raid_disks; in raid5_run()
7943 rdev = rdev_mdlock_deref(mddev, conf->disks[i].rdev); in raid5_run()
7944 if (!rdev && conf->disks[i].replacement) { in raid5_run()
7947 conf->disks[i].replacement); in raid5_run()
7948 conf->disks[i].replacement = NULL; in raid5_run()
7950 rcu_assign_pointer(conf->disks[i].rdev, rdev); in raid5_run()
7954 if (rcu_access_pointer(conf->disks[i].replacement) && in raid5_run()
7955 conf->reshape_progress != MaxSector) { in raid5_run()
7978 conf->algorithm, in raid5_run()
7979 conf->raid_disks, in raid5_run()
7980 conf->max_degraded)) in raid5_run()
7984 conf->prev_algo, in raid5_run()
7985 conf->previous_raid_disks, in raid5_run()
7986 conf->max_degraded)) in raid5_run()
7994 mddev->degraded = raid5_calc_degraded(conf); in raid5_run()
7996 if (has_failed(conf)) { in raid5_run()
7998 mdname(mddev), mddev->degraded, conf->raid_disks); in raid5_run()
8022 mdname(mddev), conf->level, in raid5_run()
8026 print_raid5_conf(conf); in raid5_run()
8028 if (conf->reshape_progress != MaxSector) { in raid5_run()
8029 conf->reshape_safe = conf->reshape_progress; in raid5_run()
8030 atomic_set(&conf->reshape_stripes, 0); in raid5_run()
8056 int data_disks = conf->previous_raid_disks - conf->max_degraded; in raid5_run()
8062 raid5_set_io_opt(conf); in raid5_run()
8106 RAID5_MAX_REQ_STRIPES << RAID5_STRIPE_SHIFT(conf)); in raid5_run()
8112 if (log_init(conf, journal_dev, raid5_has_ppl(conf))) in raid5_run()
8118 print_raid5_conf(conf); in raid5_run()
8119 free_conf(conf); in raid5_run()
8127 struct r5conf *conf = priv; in raid5_free() local
8129 free_conf(conf); in raid5_free()
8135 struct r5conf *conf = mddev->private; in raid5_status() local
8139 conf->chunk_sectors / 2, mddev->layout); in raid5_status()
8140 seq_printf (seq, " [%d/%d] [", conf->raid_disks, conf->raid_disks - mddev->degraded); in raid5_status()
8142 for (i = 0; i < conf->raid_disks; i++) { in raid5_status()
8143 struct md_rdev *rdev = rcu_dereference(conf->disks[i].rdev); in raid5_status()
8150 static void print_raid5_conf (struct r5conf *conf) in print_raid5_conf() argument
8155 pr_debug("RAID conf printout:\n"); in print_raid5_conf()
8156 if (!conf) { in print_raid5_conf()
8157 pr_debug("(conf==NULL)\n"); in print_raid5_conf()
8160 pr_debug(" --- level:%d rd:%d wd:%d\n", conf->level, in print_raid5_conf()
8161 conf->raid_disks, in print_raid5_conf()
8162 conf->raid_disks - conf->mddev->degraded); in print_raid5_conf()
8165 for (i = 0; i < conf->raid_disks; i++) { in print_raid5_conf()
8166 rdev = rcu_dereference(conf->disks[i].rdev); in print_raid5_conf()
8178 struct r5conf *conf = mddev->private; in raid5_spare_active() local
8183 for (i = 0; i < conf->raid_disks; i++) { in raid5_spare_active()
8184 rdev = rdev_mdlock_deref(mddev, conf->disks[i].rdev); in raid5_spare_active()
8186 conf->disks[i].replacement); in raid5_spare_active()
8213 spin_lock_irqsave(&conf->device_lock, flags); in raid5_spare_active()
8214 mddev->degraded = raid5_calc_degraded(conf); in raid5_spare_active()
8215 spin_unlock_irqrestore(&conf->device_lock, flags); in raid5_spare_active()
8216 print_raid5_conf(conf); in raid5_spare_active()
8222 struct r5conf *conf = mddev->private; in raid5_remove_disk() local
8229 print_raid5_conf(conf); in raid5_remove_disk()
8230 if (test_bit(Journal, &rdev->flags) && conf->log) { in raid5_remove_disk()
8237 if (atomic_read(&conf->active_stripes) || in raid5_remove_disk()
8238 atomic_read(&conf->r5c_cached_full_stripes) || in raid5_remove_disk()
8239 atomic_read(&conf->r5c_cached_partial_stripes)) { in raid5_remove_disk()
8242 log_exit(conf); in raid5_remove_disk()
8245 if (unlikely(number >= conf->pool_size)) in raid5_remove_disk()
8247 p = conf->disks + number; in raid5_remove_disk()
8255 if (number >= conf->raid_disks && in raid5_remove_disk()
8256 conf->reshape_progress == MaxSector) in raid5_remove_disk()
8268 mddev->recovery_disabled != conf->recovery_disabled && in raid5_remove_disk()
8269 !has_failed(conf) && in raid5_remove_disk()
8272 number < conf->raid_disks) { in raid5_remove_disk()
8287 err = log_modify(conf, rdev, false); in raid5_remove_disk()
8303 err = log_modify(conf, tmp, true); in raid5_remove_disk()
8309 print_raid5_conf(conf); in raid5_remove_disk()
8315 struct r5conf *conf = mddev->private; in raid5_add_disk() local
8321 int last = conf->raid_disks - 1; in raid5_add_disk()
8324 if (conf->log) in raid5_add_disk()
8332 ret = log_init(conf, rdev, false); in raid5_add_disk()
8336 ret = r5l_start(conf->log); in raid5_add_disk()
8342 if (mddev->recovery_disabled == conf->recovery_disabled) in raid5_add_disk()
8345 if (rdev->saved_raid_disk < 0 && has_failed(conf)) in raid5_add_disk()
8358 conf->disks[rdev->saved_raid_disk].rdev == NULL) in raid5_add_disk()
8362 p = conf->disks + disk; in raid5_add_disk()
8367 conf->fullsync = 1; in raid5_add_disk()
8370 err = log_modify(conf, rdev, true); in raid5_add_disk()
8376 p = conf->disks + disk; in raid5_add_disk()
8385 conf->fullsync = 1; in raid5_add_disk()
8391 print_raid5_conf(conf); in raid5_add_disk()
8405 struct r5conf *conf = mddev->private; in raid5_resize() local
8407 if (raid5_has_log(conf) || raid5_has_ppl(conf)) in raid5_resize()
8409 sectors &= ~((sector_t)conf->chunk_sectors - 1); in raid5_resize()
8440 struct r5conf *conf = mddev->private; in check_stripe_cache() local
8441 if (((mddev->chunk_sectors << 9) / RAID5_STRIPE_SIZE(conf)) * 4 in check_stripe_cache()
8442 > conf->min_nr_stripes || in check_stripe_cache()
8443 ((mddev->new_chunk_sectors << 9) / RAID5_STRIPE_SIZE(conf)) * 4 in check_stripe_cache()
8444 > conf->min_nr_stripes) { in check_stripe_cache()
8448 / RAID5_STRIPE_SIZE(conf))*4); in check_stripe_cache()
8456 struct r5conf *conf = mddev->private; in check_reshape() local
8458 if (raid5_has_log(conf) || raid5_has_ppl(conf)) in check_reshape()
8464 if (has_failed(conf)) in check_reshape()
8484 if (resize_chunks(conf, in check_reshape()
8485 conf->previous_raid_disks in check_reshape()
8492 if (conf->previous_raid_disks + mddev->delta_disks <= conf->pool_size) in check_reshape()
8494 return resize_stripes(conf, (conf->previous_raid_disks in check_reshape()
8500 struct r5conf *conf = mddev->private; in raid5_start_reshape() local
8512 if (has_failed(conf)) in raid5_start_reshape()
8518 for (i = 0; i < conf->raid_disks; i++) in raid5_start_reshape()
8519 if (rdev_mdlock_deref(mddev, conf->disks[i].replacement)) in raid5_start_reshape()
8528 if (spares - mddev->degraded < mddev->delta_disks - conf->max_degraded) in raid5_start_reshape()
8538 if (raid5_size(mddev, 0, conf->raid_disks + mddev->delta_disks) in raid5_start_reshape()
8545 atomic_set(&conf->reshape_stripes, 0); in raid5_start_reshape()
8546 spin_lock_irq(&conf->device_lock); in raid5_start_reshape()
8547 write_seqcount_begin(&conf->gen_lock); in raid5_start_reshape()
8548 conf->previous_raid_disks = conf->raid_disks; in raid5_start_reshape()
8549 conf->raid_disks += mddev->delta_disks; in raid5_start_reshape()
8550 conf->prev_chunk_sectors = conf->chunk_sectors; in raid5_start_reshape()
8551 conf->chunk_sectors = mddev->new_chunk_sectors; in raid5_start_reshape()
8552 conf->prev_algo = conf->algorithm; in raid5_start_reshape()
8553 conf->algorithm = mddev->new_layout; in raid5_start_reshape()
8554 conf->generation++; in raid5_start_reshape()
8560 conf->reshape_progress = raid5_size(mddev, 0, 0); in raid5_start_reshape()
8562 conf->reshape_progress = 0; in raid5_start_reshape()
8563 conf->reshape_safe = conf->reshape_progress; in raid5_start_reshape()
8564 write_seqcount_end(&conf->gen_lock); in raid5_start_reshape()
8565 spin_unlock_irq(&conf->device_lock); in raid5_start_reshape()
8587 >= conf->previous_raid_disks) in raid5_start_reshape()
8595 } else if (rdev->raid_disk >= conf->previous_raid_disks in raid5_start_reshape()
8605 spin_lock_irqsave(&conf->device_lock, flags); in raid5_start_reshape()
8606 mddev->degraded = raid5_calc_degraded(conf); in raid5_start_reshape()
8607 spin_unlock_irqrestore(&conf->device_lock, flags); in raid5_start_reshape()
8609 mddev->raid_disks = conf->raid_disks; in raid5_start_reshape()
8610 mddev->reshape_position = conf->reshape_progress; in raid5_start_reshape()
8622 spin_lock_irq(&conf->device_lock); in raid5_start_reshape()
8623 write_seqcount_begin(&conf->gen_lock); in raid5_start_reshape()
8624 mddev->raid_disks = conf->raid_disks = conf->previous_raid_disks; in raid5_start_reshape()
8626 conf->chunk_sectors = conf->prev_chunk_sectors; in raid5_start_reshape()
8627 mddev->new_layout = conf->algorithm = conf->prev_algo; in raid5_start_reshape()
8631 conf->generation --; in raid5_start_reshape()
8632 conf->reshape_progress = MaxSector; in raid5_start_reshape()
8634 write_seqcount_end(&conf->gen_lock); in raid5_start_reshape()
8635 spin_unlock_irq(&conf->device_lock); in raid5_start_reshape()
8638 conf->reshape_checkpoint = jiffies; in raid5_start_reshape()
8645 * changes needed in 'conf'
8647 static void end_reshape(struct r5conf *conf) in end_reshape() argument
8650 if (!test_bit(MD_RECOVERY_INTR, &conf->mddev->recovery)) { in end_reshape()
8653 spin_lock_irq(&conf->device_lock); in end_reshape()
8654 conf->previous_raid_disks = conf->raid_disks; in end_reshape()
8655 md_finish_reshape(conf->mddev); in end_reshape()
8657 conf->reshape_progress = MaxSector; in end_reshape()
8658 conf->mddev->reshape_position = MaxSector; in end_reshape()
8659 rdev_for_each(rdev, conf->mddev) in end_reshape()
8664 spin_unlock_irq(&conf->device_lock); in end_reshape()
8665 wake_up(&conf->wait_for_overlap); in end_reshape()
8667 if (conf->mddev->queue) in end_reshape()
8668 raid5_set_io_opt(conf); in end_reshape()
8677 struct r5conf *conf = mddev->private; in raid5_finish_reshape() local
8684 spin_lock_irq(&conf->device_lock); in raid5_finish_reshape()
8685 mddev->degraded = raid5_calc_degraded(conf); in raid5_finish_reshape()
8686 spin_unlock_irq(&conf->device_lock); in raid5_finish_reshape()
8687 for (d = conf->raid_disks ; in raid5_finish_reshape()
8688 d < conf->raid_disks - mddev->delta_disks; in raid5_finish_reshape()
8691 conf->disks[d].rdev); in raid5_finish_reshape()
8695 conf->disks[d].replacement); in raid5_finish_reshape()
8700 mddev->layout = conf->algorithm; in raid5_finish_reshape()
8701 mddev->chunk_sectors = conf->chunk_sectors; in raid5_finish_reshape()
8710 struct r5conf *conf = mddev->private; in raid5_quiesce() local
8714 lock_all_device_hash_locks_irq(conf); in raid5_quiesce()
8718 r5c_flush_cache(conf, INT_MAX); in raid5_quiesce()
8722 smp_store_release(&conf->quiesce, 2); in raid5_quiesce()
8723 wait_event_cmd(conf->wait_for_quiescent, in raid5_quiesce()
8724 atomic_read(&conf->active_stripes) == 0 && in raid5_quiesce()
8725 atomic_read(&conf->active_aligned_reads) == 0, in raid5_quiesce()
8726 unlock_all_device_hash_locks_irq(conf), in raid5_quiesce()
8727 lock_all_device_hash_locks_irq(conf)); in raid5_quiesce()
8728 conf->quiesce = 1; in raid5_quiesce()
8729 unlock_all_device_hash_locks_irq(conf); in raid5_quiesce()
8731 wake_up(&conf->wait_for_overlap); in raid5_quiesce()
8734 lock_all_device_hash_locks_irq(conf); in raid5_quiesce()
8735 conf->quiesce = 0; in raid5_quiesce()
8736 wake_up(&conf->wait_for_quiescent); in raid5_quiesce()
8737 wake_up(&conf->wait_for_overlap); in raid5_quiesce()
8738 unlock_all_device_hash_locks_irq(conf); in raid5_quiesce()
8740 log_quiesce(conf, quiesce); in raid5_quiesce()
8841 struct r5conf *conf = mddev->private; in raid5_check_reshape() local
8861 conf->algorithm = mddev->new_layout; in raid5_check_reshape()
8865 conf->chunk_sectors = new_chunk ; in raid5_check_reshape()
8984 struct r5conf *conf; in raid5_change_consistency_policy() local
8990 conf = mddev->private; in raid5_change_consistency_policy()
8991 if (!conf) { in raid5_change_consistency_policy()
8998 if (!raid5_has_ppl(conf) && conf->level == 5) { in raid5_change_consistency_policy()
8999 err = log_init(conf, NULL, true); in raid5_change_consistency_policy()
9001 err = resize_stripes(conf, conf->pool_size); in raid5_change_consistency_policy()
9004 log_exit(conf); in raid5_change_consistency_policy()
9011 if (raid5_has_ppl(conf)) { in raid5_change_consistency_policy()
9013 log_exit(conf); in raid5_change_consistency_policy()
9015 err = resize_stripes(conf, conf->pool_size); in raid5_change_consistency_policy()
9016 } else if (test_bit(MD_HAS_JOURNAL, &conf->mddev->flags) && in raid5_change_consistency_policy()
9017 r5l_log_disk_error(conf)) { in raid5_change_consistency_policy()
9049 struct r5conf *conf = mddev->private; in raid5_start() local
9051 return r5l_start(conf->log); in raid5_start()
9056 struct r5conf *conf = mddev->private; in raid5_prepare_suspend() local
9067 wake_up(&conf->wait_for_overlap); in raid5_prepare_suspend()