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()
857 wait_event_lock_irq(conf->wait_for_stripe, in raid5_get_active_stripe()
858 is_inactive_blocked(conf, hash), in raid5_get_active_stripe()
859 *(conf->hash_locks + hash)); in raid5_get_active_stripe()
860 clear_bit(R5_INACTIVE_BLOCKED, &conf->cache_state); in raid5_get_active_stripe()
863 spin_unlock_irq(conf->hash_locks + hash); in raid5_get_active_stripe()
897 struct r5conf *conf = sh->raid_conf; in stripe_can_batch() local
899 if (raid5_has_log(conf) || raid5_has_ppl(conf)) in stripe_can_batch()
907 static void stripe_add_to_batch_list(struct r5conf *conf, in stripe_add_to_batch_list() argument
917 if (!sector_div(tmp_sec, conf->chunk_sectors)) in stripe_add_to_batch_list()
919 head_sector = sh->sector - RAID5_STRIPE_SECTORS(conf); in stripe_add_to_batch_list()
925 hash = stripe_hash_locks_hash(conf, head_sector); in stripe_add_to_batch_list()
926 spin_lock_irq(conf->hash_locks + hash); in stripe_add_to_batch_list()
927 head = find_get_stripe(conf, head_sector, conf->generation, in stripe_add_to_batch_list()
929 spin_unlock_irq(conf->hash_locks + hash); in stripe_add_to_batch_list()
982 if (atomic_dec_return(&conf->preread_active_stripes) in stripe_add_to_batch_list()
984 md_wakeup_thread(conf->mddev->thread); in stripe_add_to_batch_list()
1005 static int use_new_offset(struct r5conf *conf, struct stripe_head *sh) in use_new_offset() argument
1007 sector_t progress = conf->reshape_progress; in use_new_offset()
1009 * of conf->generation, or ->data_offset that was set before in use_new_offset()
1015 if (sh->generation == conf->generation - 1) in use_new_offset()
1045 static void dispatch_defer_bios(struct r5conf *conf, int target, in dispatch_defer_bios() argument
1052 if (conf->pending_data_cnt == 0) in dispatch_defer_bios()
1055 list_sort(NULL, &conf->pending_list, cmp_stripe); in dispatch_defer_bios()
1057 first = conf->pending_list.next; in dispatch_defer_bios()
1060 if (conf->next_pending_data) in dispatch_defer_bios()
1061 list_move_tail(&conf->pending_list, in dispatch_defer_bios()
1062 &conf->next_pending_data->sibling); in dispatch_defer_bios()
1064 while (!list_empty(&conf->pending_list)) { in dispatch_defer_bios()
1065 data = list_first_entry(&conf->pending_list, in dispatch_defer_bios()
1072 list_move(&data->sibling, &conf->free_list); in dispatch_defer_bios()
1077 conf->pending_data_cnt -= cnt; in dispatch_defer_bios()
1078 BUG_ON(conf->pending_data_cnt < 0 || cnt < target); in dispatch_defer_bios()
1080 if (next != &conf->pending_list) in dispatch_defer_bios()
1081 conf->next_pending_data = list_entry(next, in dispatch_defer_bios()
1084 conf->next_pending_data = NULL; in dispatch_defer_bios()
1086 if (first != &conf->pending_list) in dispatch_defer_bios()
1087 list_move_tail(&conf->pending_list, first); in dispatch_defer_bios()
1090 static void flush_deferred_bios(struct r5conf *conf) in flush_deferred_bios() argument
1094 if (conf->pending_data_cnt == 0) in flush_deferred_bios()
1097 spin_lock(&conf->pending_bios_lock); in flush_deferred_bios()
1098 dispatch_defer_bios(conf, conf->pending_data_cnt, &tmp); in flush_deferred_bios()
1099 BUG_ON(conf->pending_data_cnt != 0); in flush_deferred_bios()
1100 spin_unlock(&conf->pending_bios_lock); in flush_deferred_bios()
1105 static void defer_issue_bios(struct r5conf *conf, sector_t sector, in defer_issue_bios() argument
1111 spin_lock(&conf->pending_bios_lock); in defer_issue_bios()
1112 ent = list_first_entry(&conf->free_list, struct r5pending_data, in defer_issue_bios()
1114 list_move_tail(&ent->sibling, &conf->pending_list); in defer_issue_bios()
1118 conf->pending_data_cnt++; in defer_issue_bios()
1119 if (conf->pending_data_cnt >= PENDING_IO_MAX) in defer_issue_bios()
1120 dispatch_defer_bios(conf, PENDING_IO_ONE_FLUSH, &tmp); in defer_issue_bios()
1122 spin_unlock(&conf->pending_bios_lock); in defer_issue_bios()
1134 struct r5conf *conf = sh->raid_conf; in ops_run_io() local
1146 should_defer = conf->batch_bio_dispatch && conf->group_cnt; in ops_run_io()
1179 rrdev = rcu_dereference(conf->disks[i].replacement); in ops_run_io()
1181 rdev = rcu_dereference(conf->disks[i].rdev); in ops_run_io()
1216 int bad = is_badblock(rdev, sh->sector, RAID5_STRIPE_SECTORS(conf), in ops_run_io()
1223 if (!conf->mddev->external && in ops_run_io()
1224 conf->mddev->sb_flags) { in ops_run_io()
1229 md_check_recovery(conf->mddev); in ops_run_io()
1237 md_wait_for_blocked_rdev(rdev, conf->mddev); in ops_run_io()
1240 rdev_dec_pending(rdev, conf->mddev); in ops_run_io()
1248 md_sync_acct(rdev->bdev, RAID5_STRIPE_SECTORS(conf)); in ops_run_io()
1264 if (use_new_offset(conf, sh)) in ops_run_io()
1287 bi->bi_io_vec[0].bv_len = RAID5_STRIPE_SIZE(conf); in ops_run_io()
1289 bi->bi_iter.bi_size = RAID5_STRIPE_SIZE(conf); in ops_run_io()
1299 if (conf->mddev->gendisk) in ops_run_io()
1301 disk_devt(conf->mddev->gendisk), in ops_run_io()
1311 md_sync_acct(rrdev->bdev, RAID5_STRIPE_SECTORS(conf)); in ops_run_io()
1327 if (use_new_offset(conf, sh)) in ops_run_io()
1337 rbi->bi_io_vec[0].bv_len = RAID5_STRIPE_SIZE(conf); in ops_run_io()
1339 rbi->bi_iter.bi_size = RAID5_STRIPE_SIZE(conf); in ops_run_io()
1346 if (conf->mddev->gendisk) in ops_run_io()
1348 disk_devt(conf->mddev->gendisk), in ops_run_io()
1373 defer_issue_bios(conf, head_sh->sector, &pending_bios); in ops_run_io()
1387 struct r5conf *conf = sh->raid_conf; in async_copy_data() local
1409 if (len > 0 && page_offset + len > RAID5_STRIPE_SIZE(conf)) in async_copy_data()
1410 clen = RAID5_STRIPE_SIZE(conf) - page_offset; in async_copy_data()
1418 if (conf->skip_copy && in async_copy_data()
1420 clen == RAID5_STRIPE_SIZE(conf) && in async_copy_data()
1445 struct r5conf *conf = sh->raid_conf; in ops_complete_biofill() local
1466 dev->sector + RAID5_STRIPE_SECTORS(conf)) { in ops_complete_biofill()
1467 rbi2 = r5_next_bio(conf, rbi, dev->sector); in ops_complete_biofill()
1484 struct r5conf *conf = sh->raid_conf; in ops_run_biofill() local
1499 dev->sector + RAID5_STRIPE_SECTORS(conf)) { in ops_run_biofill()
1503 rbi = r5_next_bio(conf, rbi, dev->sector); in ops_run_biofill()
1929 struct r5conf *conf = sh->raid_conf; in ops_run_biodrain() local
1962 dev->sector + RAID5_STRIPE_SECTORS(conf)) { in ops_run_biodrain()
1973 r5c_is_writeback(conf->log)); in ops_run_biodrain()
1975 !r5c_is_writeback(conf->log)) { in ops_run_biodrain()
1981 wbi = r5_next_bio(conf, wbi, dev->sector); in ops_run_biodrain()
2286 struct r5conf *conf = sh->raid_conf; in raid_run_ops() local
2287 int level = conf->level; in raid_run_ops()
2290 local_lock(&conf->percpu->lock); in raid_run_ops()
2291 percpu = this_cpu_ptr(conf->percpu); in raid_run_ops()
2351 local_unlock(&conf->percpu->lock); in raid_run_ops()
2365 int disks, struct r5conf *conf) in alloc_stripe() argument
2378 sh->raid_conf = conf; in alloc_stripe()
2381 if (raid5_has_ppl(conf)) { in alloc_stripe()
2389 if (init_stripe_shared_pages(sh, conf, disks)) { in alloc_stripe()
2397 static int grow_one_stripe(struct r5conf *conf, gfp_t gfp) in grow_one_stripe() argument
2401 sh = alloc_stripe(conf->slab_cache, gfp, conf->pool_size, conf); in grow_one_stripe()
2407 free_stripe(conf->slab_cache, sh); in grow_one_stripe()
2411 conf->max_nr_stripes % NR_STRIPE_HASH_LOCKS; in grow_one_stripe()
2413 atomic_inc(&conf->active_stripes); in grow_one_stripe()
2416 conf->max_nr_stripes++; in grow_one_stripe()
2420 static int grow_stripes(struct r5conf *conf, int num) in grow_stripes() argument
2423 size_t namelen = sizeof(conf->cache_name[0]); in grow_stripes()
2424 int devs = max(conf->raid_disks, conf->previous_raid_disks); in grow_stripes()
2426 if (conf->mddev->gendisk) in grow_stripes()
2427 snprintf(conf->cache_name[0], namelen, in grow_stripes()
2428 "raid%d-%s", conf->level, mdname(conf->mddev)); in grow_stripes()
2430 snprintf(conf->cache_name[0], namelen, in grow_stripes()
2431 "raid%d-%p", conf->level, conf->mddev); in grow_stripes()
2432 snprintf(conf->cache_name[1], namelen, "%.27s-alt", conf->cache_name[0]); in grow_stripes()
2434 conf->active_name = 0; in grow_stripes()
2435 sc = kmem_cache_create(conf->cache_name[conf->active_name], in grow_stripes()
2440 conf->slab_cache = sc; in grow_stripes()
2441 conf->pool_size = devs; in grow_stripes()
2443 if (!grow_one_stripe(conf, GFP_KERNEL)) in grow_stripes()
2490 static int resize_chunks(struct r5conf *conf, int new_disks, int new_sectors) in resize_chunks() argument
2500 if (conf->scribble_disks >= new_disks && in resize_chunks()
2501 conf->scribble_sectors >= new_sectors) in resize_chunks()
2503 mddev_suspend(conf->mddev); in resize_chunks()
2509 percpu = per_cpu_ptr(conf->percpu, cpu); in resize_chunks()
2511 new_sectors / RAID5_STRIPE_SECTORS(conf)); in resize_chunks()
2517 mddev_resume(conf->mddev); in resize_chunks()
2519 conf->scribble_disks = new_disks; in resize_chunks()
2520 conf->scribble_sectors = new_sectors; in resize_chunks()
2525 static int resize_stripes(struct r5conf *conf, int newsize) in resize_stripes() argument
2539 * 3/ reallocate conf->disks to be suitable bigger. If this fails, in resize_stripes()
2558 md_allow_write(conf->mddev); in resize_stripes()
2561 sc = kmem_cache_create(conf->cache_name[1-conf->active_name], in resize_stripes()
2568 mutex_lock(&conf->cache_size_mutex); in resize_stripes()
2570 for (i = conf->max_nr_stripes; i; i--) { in resize_stripes()
2571 nsh = alloc_stripe(sc, GFP_KERNEL, newsize, conf); in resize_stripes()
2585 mutex_unlock(&conf->cache_size_mutex); in resize_stripes()
2595 lock_device_hash_lock(conf, hash); in resize_stripes()
2596 wait_event_cmd(conf->wait_for_stripe, in resize_stripes()
2597 !list_empty(conf->inactive_list + hash), in resize_stripes()
2598 unlock_device_hash_lock(conf, hash), in resize_stripes()
2599 lock_device_hash_lock(conf, hash)); in resize_stripes()
2600 osh = get_free_stripe(conf, hash); in resize_stripes()
2601 unlock_device_hash_lock(conf, hash); in resize_stripes()
2609 for(i=0; i<conf->pool_size; i++) { in resize_stripes()
2615 free_stripe(conf->slab_cache, osh); in resize_stripes()
2617 if (cnt >= conf->max_nr_stripes / NR_STRIPE_HASH_LOCKS + in resize_stripes()
2618 !!((conf->max_nr_stripes % NR_STRIPE_HASH_LOCKS) > hash)) { in resize_stripes()
2623 kmem_cache_destroy(conf->slab_cache); in resize_stripes()
2628 * conf->disks and the scribble region in resize_stripes()
2632 for (i = 0; i < conf->pool_size; i++) in resize_stripes()
2633 ndisks[i] = conf->disks[i]; in resize_stripes()
2635 for (i = conf->pool_size; i < newsize; i++) { in resize_stripes()
2642 for (i = conf->pool_size; i < newsize; i++) in resize_stripes()
2647 kfree(conf->disks); in resize_stripes()
2648 conf->disks = ndisks; in resize_stripes()
2653 conf->slab_cache = sc; in resize_stripes()
2654 conf->active_name = 1-conf->active_name; in resize_stripes()
2670 for (i = conf->raid_disks; i < newsize; i++) { in resize_stripes()
2678 for (i=conf->raid_disks; i < newsize; i++) in resize_stripes()
2693 conf->pool_size = newsize; in resize_stripes()
2694 mutex_unlock(&conf->cache_size_mutex); in resize_stripes()
2699 static int drop_one_stripe(struct r5conf *conf) in drop_one_stripe() argument
2702 int hash = (conf->max_nr_stripes - 1) & STRIPE_HASH_LOCKS_MASK; in drop_one_stripe()
2704 spin_lock_irq(conf->hash_locks + hash); in drop_one_stripe()
2705 sh = get_free_stripe(conf, hash); in drop_one_stripe()
2706 spin_unlock_irq(conf->hash_locks + hash); in drop_one_stripe()
2711 free_stripe(conf->slab_cache, sh); in drop_one_stripe()
2712 atomic_dec(&conf->active_stripes); in drop_one_stripe()
2713 conf->max_nr_stripes--; in drop_one_stripe()
2717 static void shrink_stripes(struct r5conf *conf) in shrink_stripes() argument
2719 while (conf->max_nr_stripes && in shrink_stripes()
2720 drop_one_stripe(conf)) in shrink_stripes()
2723 kmem_cache_destroy(conf->slab_cache); in shrink_stripes()
2724 conf->slab_cache = NULL; in shrink_stripes()
2752 struct r5conf *conf = sh->raid_conf; in raid5_end_read_request() local
2774 rdev = rdev_pend_deref(conf->disks[i].replacement); in raid5_end_read_request()
2776 rdev = rdev_pend_deref(conf->disks[i].rdev); in raid5_end_read_request()
2778 if (use_new_offset(conf, sh)) in raid5_end_read_request()
2791 mdname(conf->mddev), RAID5_STRIPE_SECTORS(conf), in raid5_end_read_request()
2794 atomic_add(RAID5_STRIPE_SECTORS(conf), &rdev->corrected_errors); in raid5_end_read_request()
2819 mdname(conf->mddev), in raid5_end_read_request()
2822 else if (conf->mddev->degraded >= conf->max_degraded) { in raid5_end_read_request()
2826 mdname(conf->mddev), in raid5_end_read_request()
2834 mdname(conf->mddev), in raid5_end_read_request()
2838 > conf->max_nr_stripes) { in raid5_end_read_request()
2841 mdname(conf->mddev), in raid5_end_read_request()
2843 conf->max_nr_stripes); in raid5_end_read_request()
2845 mdname(conf->mddev), rdev->bdev); in raid5_end_read_request()
2866 rdev, sh->sector, RAID5_STRIPE_SECTORS(conf), 0))) in raid5_end_read_request()
2867 md_error(conf->mddev, rdev); in raid5_end_read_request()
2870 rdev_dec_pending(rdev, conf->mddev); in raid5_end_read_request()
2880 struct r5conf *conf = sh->raid_conf; in raid5_end_write_request() local
2889 rdev = rdev_pend_deref(conf->disks[i].rdev); in raid5_end_write_request()
2893 rdev = rdev_pend_deref(conf->disks[i].replacement); in raid5_end_write_request()
2901 rdev = rdev_pend_deref(conf->disks[i].rdev); in raid5_end_write_request()
2915 md_error(conf->mddev, rdev); in raid5_end_write_request()
2917 RAID5_STRIPE_SECTORS(conf), in raid5_end_write_request()
2929 RAID5_STRIPE_SECTORS(conf), in raid5_end_write_request()
2940 rdev_dec_pending(rdev, conf->mddev); in raid5_end_write_request()
2957 struct r5conf *conf = mddev->private; in raid5_error() local
2964 spin_lock_irqsave(&conf->device_lock, flags); in raid5_error()
2967 mddev->degraded = raid5_calc_degraded(conf); in raid5_error()
2969 if (has_failed(conf)) { in raid5_error()
2970 set_bit(MD_BROKEN, &conf->mddev->flags); in raid5_error()
2971 conf->recovery_disabled = mddev->recovery_disabled; in raid5_error()
2974 mdname(mddev), mddev->degraded, conf->raid_disks); in raid5_error()
2977 mdname(mddev), conf->raid_disks - mddev->degraded); in raid5_error()
2980 spin_unlock_irqrestore(&conf->device_lock, flags); in raid5_error()
2993 sector_t raid5_compute_sector(struct r5conf *conf, sector_t r_sector, in raid5_compute_sector() argument
3003 int algorithm = previous ? conf->prev_algo in raid5_compute_sector()
3004 : conf->algorithm; in raid5_compute_sector()
3005 int sectors_per_chunk = previous ? conf->prev_chunk_sectors in raid5_compute_sector()
3006 : conf->chunk_sectors; in raid5_compute_sector()
3007 int raid_disks = previous ? conf->previous_raid_disks in raid5_compute_sector()
3008 : conf->raid_disks; in raid5_compute_sector()
3009 int data_disks = raid_disks - conf->max_degraded; in raid5_compute_sector()
3029 switch(conf->level) { in raid5_compute_sector()
3197 struct r5conf *conf = sh->raid_conf; in raid5_compute_blocknr() local
3199 int data_disks = raid_disks - conf->max_degraded; in raid5_compute_blocknr()
3201 int sectors_per_chunk = previous ? conf->prev_chunk_sectors in raid5_compute_blocknr()
3202 : conf->chunk_sectors; in raid5_compute_blocknr()
3203 int algorithm = previous ? conf->prev_algo in raid5_compute_blocknr()
3204 : conf->algorithm; in raid5_compute_blocknr()
3217 switch(conf->level) { in raid5_compute_blocknr()
3304 check = raid5_compute_sector(conf, r_sector, in raid5_compute_blocknr()
3309 mdname(conf->mddev)); in raid5_compute_blocknr()
3336 * stripe, we need to reserve (conf->raid_disk + 1) pages per stripe
3338 * operation, we only need (conf->max_degraded + 1) pages per stripe.
3353 static inline bool delay_towrite(struct r5conf *conf, in delay_towrite() argument
3362 if (test_bit(R5C_LOG_CRITICAL, &conf->cache_state) && in delay_towrite()
3376 struct r5conf *conf = sh->raid_conf; in schedule_reconstruction() local
3377 int level = conf->level; in schedule_reconstruction()
3391 if (dev->towrite && !delay_towrite(conf, dev, s)) { in schedule_reconstruction()
3417 if (s->locked + conf->max_degraded == disks) in schedule_reconstruction()
3419 atomic_inc(&conf->pending_full_writes); in schedule_reconstruction()
3483 struct r5conf *conf = sh->raid_conf; in stripe_bio_overlaps() local
3507 if (forwrite && raid5_has_ppl(conf)) { in stripe_bio_overlaps()
3533 if (first + conf->chunk_sectors * (count - 1) != last) in stripe_bio_overlaps()
3543 struct r5conf *conf = sh->raid_conf; in __add_stripe_bio() local
3566 md_write_inc(conf->mddev, bi); in __add_stripe_bio()
3572 sector < sh->dev[dd_idx].sector + RAID5_STRIPE_SECTORS(conf) && in __add_stripe_bio()
3574 bi = r5_next_bio(conf, bi, sh->dev[dd_idx].sector)) { in __add_stripe_bio()
3578 if (sector >= sh->dev[dd_idx].sector + RAID5_STRIPE_SECTORS(conf)) in __add_stripe_bio()
3587 if (conf->mddev->bitmap && firstwrite) { in __add_stripe_bio()
3602 md_bitmap_startwrite(conf->mddev->bitmap, sh->sector, in __add_stripe_bio()
3603 RAID5_STRIPE_SECTORS(conf), 0); in __add_stripe_bio()
3607 sh->bm_seq = conf->seq_flush+1; in __add_stripe_bio()
3634 static void end_reshape(struct r5conf *conf);
3636 static void stripe_set_idx(sector_t stripe, struct r5conf *conf, int previous, in stripe_set_idx() argument
3640 previous ? conf->prev_chunk_sectors : conf->chunk_sectors; in stripe_set_idx()
3643 int disks = previous ? conf->previous_raid_disks : conf->raid_disks; in stripe_set_idx()
3645 raid5_compute_sector(conf, in stripe_set_idx()
3646 stripe * (disks - conf->max_degraded) in stripe_set_idx()
3653 handle_failed_stripe(struct r5conf *conf, struct stripe_head *sh, in handle_failed_stripe() argument
3665 rdev = rcu_dereference(conf->disks[i].rdev); in handle_failed_stripe()
3676 RAID5_STRIPE_SECTORS(conf), 0)) in handle_failed_stripe()
3677 md_error(conf->mddev, rdev); in handle_failed_stripe()
3678 rdev_dec_pending(rdev, conf->mddev); in handle_failed_stripe()
3693 wake_up(&conf->wait_for_overlap); in handle_failed_stripe()
3696 sh->dev[i].sector + RAID5_STRIPE_SECTORS(conf)) { in handle_failed_stripe()
3697 struct bio *nextbi = r5_next_bio(conf, bi, sh->dev[i].sector); in handle_failed_stripe()
3699 md_write_end(conf->mddev); in handle_failed_stripe()
3704 md_bitmap_endwrite(conf->mddev->bitmap, sh->sector, in handle_failed_stripe()
3705 RAID5_STRIPE_SECTORS(conf), 0, 0); in handle_failed_stripe()
3717 sh->dev[i].sector + RAID5_STRIPE_SECTORS(conf)) { in handle_failed_stripe()
3718 struct bio *bi2 = r5_next_bio(conf, bi, sh->dev[i].sector); in handle_failed_stripe()
3720 md_write_end(conf->mddev); in handle_failed_stripe()
3729 s->failed > conf->max_degraded && in handle_failed_stripe()
3737 wake_up(&conf->wait_for_overlap); in handle_failed_stripe()
3741 sh->dev[i].sector + RAID5_STRIPE_SECTORS(conf)) { in handle_failed_stripe()
3743 r5_next_bio(conf, bi, sh->dev[i].sector); in handle_failed_stripe()
3750 md_bitmap_endwrite(conf->mddev->bitmap, sh->sector, in handle_failed_stripe()
3751 RAID5_STRIPE_SECTORS(conf), 0, 0); in handle_failed_stripe()
3761 if (atomic_dec_and_test(&conf->pending_full_writes)) in handle_failed_stripe()
3762 md_wakeup_thread(conf->mddev->thread); in handle_failed_stripe()
3766 handle_failed_sync(struct r5conf *conf, struct stripe_head *sh, in handle_failed_sync() argument
3775 wake_up(&conf->wait_for_overlap); in handle_failed_sync()
3785 if (test_bit(MD_RECOVERY_RECOVER, &conf->mddev->recovery)) { in handle_failed_sync()
3790 for (i = 0; i < conf->raid_disks; i++) { in handle_failed_sync()
3791 struct md_rdev *rdev = rcu_dereference(conf->disks[i].rdev); in handle_failed_sync()
3796 RAID5_STRIPE_SECTORS(conf), 0)) in handle_failed_sync()
3798 rdev = rcu_dereference(conf->disks[i].replacement); in handle_failed_sync()
3803 RAID5_STRIPE_SECTORS(conf), 0)) in handle_failed_sync()
3808 conf->recovery_disabled = in handle_failed_sync()
3809 conf->mddev->recovery_disabled; in handle_failed_sync()
3811 md_done_sync(conf->mddev, RAID5_STRIPE_SECTORS(conf), !abort); in handle_failed_sync()
4065 static void handle_stripe_clean_event(struct r5conf *conf, in handle_stripe_clean_event() argument
4096 dev->sector + RAID5_STRIPE_SECTORS(conf)) { in handle_stripe_clean_event()
4097 wbi2 = r5_next_bio(conf, wbi, dev->sector); in handle_stripe_clean_event()
4098 md_write_end(conf->mddev); in handle_stripe_clean_event()
4102 md_bitmap_endwrite(conf->mddev->bitmap, sh->sector, in handle_stripe_clean_event()
4103 RAID5_STRIPE_SECTORS(conf), in handle_stripe_clean_event()
4141 spin_lock_irq(conf->hash_locks + hash); in handle_stripe_clean_event()
4143 spin_unlock_irq(conf->hash_locks + hash); in handle_stripe_clean_event()
4158 if (atomic_dec_and_test(&conf->pending_full_writes)) in handle_stripe_clean_event()
4159 md_wakeup_thread(conf->mddev->thread); in handle_stripe_clean_event()
4180 static int handle_stripe_dirtying(struct r5conf *conf, in handle_stripe_dirtying() argument
4186 sector_t recovery_cp = conf->mddev->recovery_cp; in handle_stripe_dirtying()
4195 if (conf->rmw_level == PARITY_DISABLE_RMW || in handle_stripe_dirtying()
4203 conf->rmw_level, (unsigned long long)recovery_cp, in handle_stripe_dirtying()
4208 if (((dev->towrite && !delay_towrite(conf, dev, s)) || in handle_stripe_dirtying()
4235 if ((rmw < rcw || (rmw == rcw && conf->rmw_level == PARITY_PREFER_RMW)) && rmw > 0) { in handle_stripe_dirtying()
4237 if (conf->mddev->queue) in handle_stripe_dirtying()
4238 blk_add_trace_msg(conf->mddev->queue, in handle_stripe_dirtying()
4259 &conf->cache_state)) { in handle_stripe_dirtying()
4273 if (((dev->towrite && !delay_towrite(conf, dev, s)) || in handle_stripe_dirtying()
4292 if ((rcw < rmw || (rcw == rmw && conf->rmw_level != PARITY_PREFER_RMW)) && rcw > 0) { in handle_stripe_dirtying()
4317 if (rcw && conf->mddev->queue) in handle_stripe_dirtying()
4318 blk_add_trace_msg(conf->mddev->queue, "raid5 rcw %llu %d %d %d", in handle_stripe_dirtying()
4344 static void handle_parity_checks5(struct r5conf *conf, struct stripe_head *sh, in handle_parity_checks5() argument
4406 atomic64_add(RAID5_STRIPE_SECTORS(conf), &conf->mddev->resync_mismatches); in handle_parity_checks5()
4407 if (test_bit(MD_RECOVERY_CHECK, &conf->mddev->recovery)) { in handle_parity_checks5()
4411 "%llu-%llu\n", mdname(conf->mddev), in handle_parity_checks5()
4414 RAID5_STRIPE_SECTORS(conf)); in handle_parity_checks5()
4437 static void handle_parity_checks6(struct r5conf *conf, struct stripe_head *sh, in handle_parity_checks6() argument
4533 mdname(conf->mddev), in handle_parity_checks6()
4571 atomic64_add(RAID5_STRIPE_SECTORS(conf), &conf->mddev->resync_mismatches); in handle_parity_checks6()
4572 if (test_bit(MD_RECOVERY_CHECK, &conf->mddev->recovery)) { in handle_parity_checks6()
4576 "%llu-%llu\n", mdname(conf->mddev), in handle_parity_checks6()
4579 RAID5_STRIPE_SECTORS(conf)); in handle_parity_checks6()
4614 static void handle_stripe_expansion(struct r5conf *conf, struct stripe_head *sh) in handle_stripe_expansion() argument
4631 sector_t s = raid5_compute_sector(conf, bn, 0, in handle_stripe_expansion()
4633 sh2 = raid5_get_active_stripe(conf, NULL, s, in handle_stripe_expansion()
4652 sh->dev[i].offset, RAID5_STRIPE_SIZE(conf), in handle_stripe_expansion()
4657 for (j = 0; j < conf->raid_disks; j++) in handle_stripe_expansion()
4662 if (j == conf->raid_disks) { in handle_stripe_expansion()
4689 struct r5conf *conf = sh->raid_conf; in analyse_stripe() local
4701 s->log_failed = r5l_log_disk_error(conf); in analyse_stripe()
4749 rdev = rcu_dereference(conf->disks[i].replacement); in analyse_stripe()
4751 rdev->recovery_offset >= sh->sector + RAID5_STRIPE_SECTORS(conf) && in analyse_stripe()
4752 !is_badblock(rdev, sh->sector, RAID5_STRIPE_SECTORS(conf), in analyse_stripe()
4760 rdev = rcu_dereference(conf->disks[i].rdev); in analyse_stripe()
4766 is_bad = is_badblock(rdev, sh->sector, RAID5_STRIPE_SECTORS(conf), in analyse_stripe()
4793 else if (sh->sector + RAID5_STRIPE_SECTORS(conf) <= rdev->recovery_offset) in analyse_stripe()
4808 conf->disks[i].rdev); in analyse_stripe()
4821 conf->disks[i].rdev); in analyse_stripe()
4830 conf->disks[i].replacement); in analyse_stripe()
4852 conf->disks[i].replacement); in analyse_stripe()
4873 sh->sector >= conf->mddev->recovery_cp || in analyse_stripe()
4874 test_bit(MD_RECOVERY_REQUESTED, &(conf->mddev->recovery))) in analyse_stripe()
4984 struct r5conf *conf = sh->raid_conf; in handle_stripe() local
5041 test_bit(MD_SB_CHANGE_PENDING, &conf->mddev->sb_flags)) { in handle_stripe()
5053 rdev_dec_pending(s.blocked_rdev, conf->mddev); in handle_stripe()
5073 if (s.failed > conf->max_degraded || in handle_stripe()
5079 handle_failed_stripe(conf, sh, &s, disks); in handle_stripe()
5081 handle_failed_sync(conf, sh, &s); in handle_stripe()
5134 || conf->level < 6; in handle_stripe()
5145 handle_stripe_clean_event(conf, sh, disks); in handle_stripe()
5148 r5c_handle_cached_data_endio(conf, sh, disks); in handle_stripe()
5167 r5c_finish_stripe_write_out(conf, sh, &s); in handle_stripe()
5179 if (!r5c_is_writeback(conf->log)) { in handle_stripe()
5181 handle_stripe_dirtying(conf, sh, &s, disks); in handle_stripe()
5187 ret = r5c_try_caching_write(conf, sh, &s, in handle_stripe()
5200 ret = handle_stripe_dirtying(conf, sh, &s, in handle_stripe()
5217 if (conf->level == 6) in handle_stripe()
5218 handle_parity_checks6(conf, sh, &s, disks); in handle_stripe()
5220 handle_parity_checks5(conf, sh, &s, disks); in handle_stripe()
5227 for (i = 0; i < conf->raid_disks; i++) in handle_stripe()
5241 md_done_sync(conf->mddev, RAID5_STRIPE_SECTORS(conf), 1); in handle_stripe()
5244 wake_up(&conf->wait_for_overlap); in handle_stripe()
5250 if (s.failed <= conf->max_degraded && !conf->mddev->ro) in handle_stripe()
5271 = raid5_get_active_stripe(conf, NULL, sh->sector, in handle_stripe()
5282 atomic_inc(&conf->preread_active_stripes); in handle_stripe()
5291 for (i = conf->raid_disks; i--; ) { in handle_stripe()
5301 sh->disks = conf->raid_disks; in handle_stripe()
5302 stripe_set_idx(sh->sector, conf, 0, sh); in handle_stripe()
5306 atomic_dec(&conf->reshape_stripes); in handle_stripe()
5307 wake_up(&conf->wait_for_overlap); in handle_stripe()
5308 md_done_sync(conf->mddev, RAID5_STRIPE_SECTORS(conf), 1); in handle_stripe()
5313 handle_stripe_expansion(conf, sh); in handle_stripe()
5318 if (conf->mddev->external) in handle_stripe()
5320 conf->mddev); in handle_stripe()
5327 conf->mddev); in handle_stripe()
5336 rdev = rdev_pend_deref(conf->disks[i].rdev); in handle_stripe()
5338 RAID5_STRIPE_SECTORS(conf), 0)) in handle_stripe()
5339 md_error(conf->mddev, rdev); in handle_stripe()
5340 rdev_dec_pending(rdev, 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 rdev_dec_pending(rdev, conf->mddev); in handle_stripe()
5349 rdev = rdev_pend_deref(conf->disks[i].replacement); in handle_stripe()
5352 rdev = rdev_pend_deref(conf->disks[i].rdev); in handle_stripe()
5354 RAID5_STRIPE_SECTORS(conf), 0); in handle_stripe()
5355 rdev_dec_pending(rdev, conf->mddev); in handle_stripe()
5369 atomic_dec(&conf->preread_active_stripes); in handle_stripe()
5370 if (atomic_read(&conf->preread_active_stripes) < in handle_stripe()
5372 md_wakeup_thread(conf->mddev->thread); in handle_stripe()
5378 static void raid5_activate_delayed(struct r5conf *conf) in raid5_activate_delayed() argument
5379 __must_hold(&conf->device_lock) in raid5_activate_delayed()
5381 if (atomic_read(&conf->preread_active_stripes) < IO_THRESHOLD) { in raid5_activate_delayed()
5382 while (!list_empty(&conf->delayed_list)) { in raid5_activate_delayed()
5383 struct list_head *l = conf->delayed_list.next; in raid5_activate_delayed()
5389 atomic_inc(&conf->preread_active_stripes); in raid5_activate_delayed()
5390 list_add_tail(&sh->lru, &conf->hold_list); in raid5_activate_delayed()
5396 static void activate_bit_delay(struct r5conf *conf, in activate_bit_delay() argument
5398 __must_hold(&conf->device_lock) in activate_bit_delay()
5401 list_add(&head, &conf->bitmap_list); in activate_bit_delay()
5402 list_del_init(&conf->bitmap_list); in activate_bit_delay()
5409 __release_stripe(conf, sh, &temp_inactive_list[hash]); in activate_bit_delay()
5415 struct r5conf *conf = mddev->private; in in_chunk_boundary() local
5420 chunk_sectors = min(conf->chunk_sectors, conf->prev_chunk_sectors); in in_chunk_boundary()
5429 static void add_bio_to_retry(struct bio *bi,struct r5conf *conf) in add_bio_to_retry() argument
5433 spin_lock_irqsave(&conf->device_lock, flags); in add_bio_to_retry()
5435 bi->bi_next = conf->retry_read_aligned_list; in add_bio_to_retry()
5436 conf->retry_read_aligned_list = bi; in add_bio_to_retry()
5438 spin_unlock_irqrestore(&conf->device_lock, flags); in add_bio_to_retry()
5439 md_wakeup_thread(conf->mddev->thread); in add_bio_to_retry()
5442 static struct bio *remove_bio_from_retry(struct r5conf *conf, in remove_bio_from_retry() argument
5447 bi = conf->retry_read_aligned; in remove_bio_from_retry()
5449 *offset = conf->retry_read_offset; in remove_bio_from_retry()
5450 conf->retry_read_aligned = NULL; in remove_bio_from_retry()
5453 bi = conf->retry_read_aligned_list; in remove_bio_from_retry()
5455 conf->retry_read_aligned_list = bi->bi_next; in remove_bio_from_retry()
5474 struct r5conf *conf; in raid5_align_endio() local
5484 conf = mddev->private; in raid5_align_endio()
5486 rdev_dec_pending(rdev, conf->mddev); in raid5_align_endio()
5492 if (atomic_dec_and_test(&conf->active_aligned_reads)) in raid5_align_endio()
5493 wake_up(&conf->wait_for_quiescent); in raid5_align_endio()
5499 add_bio_to_retry(raid_bi, conf); in raid5_align_endio()
5504 struct r5conf *conf = mddev->private; in raid5_read_one_chunk() local
5517 sector = raid5_compute_sector(conf, raid_bio->bi_iter.bi_sector, 0, in raid5_read_one_chunk()
5522 if (r5c_big_stripe_cached(conf, sector)) in raid5_read_one_chunk()
5525 rdev = rcu_dereference(conf->disks[dd_idx].replacement); in raid5_read_one_chunk()
5528 rdev = rcu_dereference(conf->disks[dd_idx].rdev); in raid5_read_one_chunk()
5562 if (conf->quiesce == 0) { in raid5_read_one_chunk()
5563 atomic_inc(&conf->active_aligned_reads); in raid5_read_one_chunk()
5567 if (!did_inc || smp_load_acquire(&conf->quiesce) != 0) { in raid5_read_one_chunk()
5571 if (did_inc && atomic_dec_and_test(&conf->active_aligned_reads)) in raid5_read_one_chunk()
5572 wake_up(&conf->wait_for_quiescent); in raid5_read_one_chunk()
5573 spin_lock_irq(&conf->device_lock); in raid5_read_one_chunk()
5574 wait_event_lock_irq(conf->wait_for_quiescent, conf->quiesce == 0, in raid5_read_one_chunk()
5575 conf->device_lock); in raid5_read_one_chunk()
5576 atomic_inc(&conf->active_aligned_reads); in raid5_read_one_chunk()
5577 spin_unlock_irq(&conf->device_lock); in raid5_read_one_chunk()
5599 struct r5conf *conf = mddev->private; in chunk_aligned_read() local
5600 split = bio_split(raid_bio, sectors, GFP_NOIO, &conf->bio_split); in chunk_aligned_read()
5622 static struct stripe_head *__get_priority_stripe(struct r5conf *conf, int group) in __get_priority_stripe() argument
5623 __must_hold(&conf->device_lock) in __get_priority_stripe()
5628 bool second_try = !r5c_is_writeback(conf->log) && in __get_priority_stripe()
5629 !r5l_log_disk_error(conf); in __get_priority_stripe()
5630 bool try_loprio = test_bit(R5C_LOG_TIGHT, &conf->cache_state) || in __get_priority_stripe()
5631 r5l_log_disk_error(conf); in __get_priority_stripe()
5636 if (conf->worker_cnt_per_group == 0) { in __get_priority_stripe()
5637 handle_list = try_loprio ? &conf->loprio_list : in __get_priority_stripe()
5638 &conf->handle_list; in __get_priority_stripe()
5640 handle_list = try_loprio ? &conf->worker_groups[group].loprio_list : in __get_priority_stripe()
5641 &conf->worker_groups[group].handle_list; in __get_priority_stripe()
5642 wg = &conf->worker_groups[group]; in __get_priority_stripe()
5645 for (i = 0; i < conf->group_cnt; i++) { in __get_priority_stripe()
5646 handle_list = try_loprio ? &conf->worker_groups[i].loprio_list : in __get_priority_stripe()
5647 &conf->worker_groups[i].handle_list; in __get_priority_stripe()
5648 wg = &conf->worker_groups[i]; in __get_priority_stripe()
5657 list_empty(&conf->hold_list) ? "empty" : "busy", in __get_priority_stripe()
5658 atomic_read(&conf->pending_full_writes), conf->bypass_count); in __get_priority_stripe()
5663 if (list_empty(&conf->hold_list)) in __get_priority_stripe()
5664 conf->bypass_count = 0; in __get_priority_stripe()
5666 if (conf->hold_list.next == conf->last_hold) in __get_priority_stripe()
5667 conf->bypass_count++; in __get_priority_stripe()
5669 conf->last_hold = conf->hold_list.next; in __get_priority_stripe()
5670 conf->bypass_count -= conf->bypass_threshold; in __get_priority_stripe()
5671 if (conf->bypass_count < 0) in __get_priority_stripe()
5672 conf->bypass_count = 0; in __get_priority_stripe()
5675 } else if (!list_empty(&conf->hold_list) && in __get_priority_stripe()
5676 ((conf->bypass_threshold && in __get_priority_stripe()
5677 conf->bypass_count > conf->bypass_threshold) || in __get_priority_stripe()
5678 atomic_read(&conf->pending_full_writes) == 0)) { in __get_priority_stripe()
5680 list_for_each_entry(tmp, &conf->hold_list, lru) { in __get_priority_stripe()
5681 if (conf->worker_cnt_per_group == 0 || in __get_priority_stripe()
5691 conf->bypass_count -= conf->bypass_threshold; in __get_priority_stripe()
5692 if (conf->bypass_count < 0) in __get_priority_stripe()
5693 conf->bypass_count = 0; in __get_priority_stripe()
5727 struct r5conf *conf = mddev->private; in raid5_unplug() local
5732 spin_lock_irq(&conf->device_lock); in raid5_unplug()
5748 __release_stripe(conf, sh, &cb->temp_inactive_list[hash]); in raid5_unplug()
5751 spin_unlock_irq(&conf->device_lock); in raid5_unplug()
5753 release_inactive_stripe_list(conf, cb->temp_inactive_list, in raid5_unplug()
5790 struct r5conf *conf = mddev->private; in make_discard_request() local
5803 logical_sector = bi->bi_iter.bi_sector & ~((sector_t)RAID5_STRIPE_SECTORS(conf)-1); in make_discard_request()
5808 stripe_sectors = conf->chunk_sectors * in make_discard_request()
5809 (conf->raid_disks - conf->max_degraded); in make_discard_request()
5814 logical_sector *= conf->chunk_sectors; in make_discard_request()
5815 last_sector *= conf->chunk_sectors; in make_discard_request()
5818 logical_sector += RAID5_STRIPE_SECTORS(conf)) { in make_discard_request()
5822 sh = raid5_get_active_stripe(conf, NULL, logical_sector, 0); in make_discard_request()
5823 prepare_to_wait(&conf->wait_for_overlap, &w, in make_discard_request()
5833 for (d = 0; d < conf->raid_disks; d++) { in make_discard_request()
5845 finish_wait(&conf->wait_for_overlap, &w); in make_discard_request()
5847 for (d = 0; d < conf->raid_disks; d++) { in make_discard_request()
5857 if (conf->mddev->bitmap) { in make_discard_request()
5859 d < conf->raid_disks - conf->max_degraded; in make_discard_request()
5863 RAID5_STRIPE_SECTORS(conf), in make_discard_request()
5865 sh->bm_seq = conf->seq_flush + 1; in make_discard_request()
5872 atomic_inc(&conf->preread_active_stripes); in make_discard_request()
5893 static bool stripe_ahead_of_reshape(struct mddev *mddev, struct r5conf *conf, in stripe_ahead_of_reshape() argument
5908 spin_lock_irq(&conf->device_lock); in stripe_ahead_of_reshape()
5911 conf->reshape_progress)) in stripe_ahead_of_reshape()
5915 spin_unlock_irq(&conf->device_lock); in stripe_ahead_of_reshape()
5920 static int add_all_stripe_bios(struct r5conf *conf, in add_all_stripe_bios() argument
5961 RAID5_STRIPE_SHIFT(conf), ctx->sectors_to_do); in add_all_stripe_bios()
5970 struct r5conf *conf, struct stripe_request_ctx *ctx, in make_stripe_request() argument
5980 seq = read_seqcount_begin(&conf->gen_lock); in make_stripe_request()
5982 if (unlikely(conf->reshape_progress != MaxSector)) { in make_stripe_request()
5992 spin_lock_irq(&conf->device_lock); in make_stripe_request()
5994 conf->reshape_progress)) { in make_stripe_request()
5998 conf->reshape_safe)) { in make_stripe_request()
5999 spin_unlock_irq(&conf->device_lock); in make_stripe_request()
6003 spin_unlock_irq(&conf->device_lock); in make_stripe_request()
6006 new_sector = raid5_compute_sector(conf, logical_sector, previous, in make_stripe_request()
6015 sh = raid5_get_active_stripe(conf, ctx, new_sector, flags); in make_stripe_request()
6023 stripe_ahead_of_reshape(mddev, conf, sh)) { in make_stripe_request()
6036 if (read_seqcount_retry(&conf->gen_lock, seq)) { in make_stripe_request()
6043 !add_all_stripe_bios(conf, ctx, sh, bi, rw, previous)) { in make_stripe_request()
6054 stripe_add_to_batch_list(conf, sh, ctx->batch_last); in make_stripe_request()
6072 atomic_inc(&conf->preread_active_stripes); in make_stripe_request()
6085 struct r5conf *conf = mddev->private; in raid5_make_request() local
6093 int ret = log_handle_flush_request(conf, bi); in raid5_make_request()
6129 logical_sector = bi->bi_iter.bi_sector & ~((sector_t)RAID5_STRIPE_SECTORS(conf)-1); in raid5_make_request()
6135 RAID5_STRIPE_SECTORS(conf)); in raid5_make_request()
6143 (conf->reshape_progress != MaxSector) && in raid5_make_request()
6144 !ahead_of_reshape(mddev, logical_sector, conf->reshape_progress) && in raid5_make_request()
6145 ahead_of_reshape(mddev, logical_sector, conf->reshape_safe)) { in raid5_make_request()
6153 add_wait_queue(&conf->wait_for_overlap, &wait); in raid5_make_request()
6155 res = make_stripe_request(mddev, conf, &ctx, logical_sector, in raid5_make_request()
6186 (s << RAID5_STRIPE_SHIFT(conf)); in raid5_make_request()
6188 remove_wait_queue(&conf->wait_for_overlap, &wait); in raid5_make_request()
6212 struct r5conf *conf = mddev->private; in reshape_request() local
6216 int raid_disks = conf->previous_raid_disks; in reshape_request()
6217 int data_disks = raid_disks - conf->max_degraded; in reshape_request()
6218 int new_data_disks = conf->raid_disks - conf->max_degraded; in reshape_request()
6230 conf->reshape_progress < raid5_size(mddev, 0, 0)) { in reshape_request()
6232 - conf->reshape_progress; in reshape_request()
6234 conf->reshape_progress == MaxSector) { in reshape_request()
6238 conf->reshape_progress > 0) in reshape_request()
6239 sector_nr = conf->reshape_progress; in reshape_request()
6255 reshape_sectors = max(conf->chunk_sectors, conf->prev_chunk_sectors); in reshape_request()
6263 writepos = conf->reshape_progress; in reshape_request()
6265 readpos = conf->reshape_progress; in reshape_request()
6267 safepos = conf->reshape_safe; in reshape_request()
6288 BUG_ON(conf->reshape_progress == 0); in reshape_request()
6319 if (conf->min_offset_diff < 0) { in reshape_request()
6320 safepos += -conf->min_offset_diff; in reshape_request()
6321 readpos += -conf->min_offset_diff; in reshape_request()
6323 writepos += conf->min_offset_diff; in reshape_request()
6328 time_after(jiffies, conf->reshape_checkpoint + 10*HZ)) { in reshape_request()
6330 wait_event(conf->wait_for_overlap, in reshape_request()
6331 atomic_read(&conf->reshape_stripes)==0 in reshape_request()
6333 if (atomic_read(&conf->reshape_stripes) != 0) in reshape_request()
6335 mddev->reshape_position = conf->reshape_progress; in reshape_request()
6346 conf->reshape_checkpoint = jiffies; in reshape_request()
6353 spin_lock_irq(&conf->device_lock); in reshape_request()
6354 conf->reshape_safe = mddev->reshape_position; in reshape_request()
6355 spin_unlock_irq(&conf->device_lock); in reshape_request()
6356 wake_up(&conf->wait_for_overlap); in reshape_request()
6361 for (i = 0; i < reshape_sectors; i += RAID5_STRIPE_SECTORS(conf)) { in reshape_request()
6364 sh = raid5_get_active_stripe(conf, NULL, stripe_addr+i, in reshape_request()
6367 atomic_inc(&conf->reshape_stripes); in reshape_request()
6375 if (conf->level == 6 && in reshape_request()
6383 memset(page_address(sh->dev[j].page), 0, RAID5_STRIPE_SIZE(conf)); in reshape_request()
6393 spin_lock_irq(&conf->device_lock); in reshape_request()
6395 conf->reshape_progress -= reshape_sectors * new_data_disks; in reshape_request()
6397 conf->reshape_progress += reshape_sectors * new_data_disks; in reshape_request()
6398 spin_unlock_irq(&conf->device_lock); in reshape_request()
6405 raid5_compute_sector(conf, stripe_addr*(new_data_disks), in reshape_request()
6408 raid5_compute_sector(conf, ((stripe_addr+reshape_sectors) in reshape_request()
6414 sh = raid5_get_active_stripe(conf, NULL, first_sector, in reshape_request()
6419 first_sector += RAID5_STRIPE_SECTORS(conf); in reshape_request()
6439 wait_event(conf->wait_for_overlap, in reshape_request()
6440 atomic_read(&conf->reshape_stripes) == 0 in reshape_request()
6442 if (atomic_read(&conf->reshape_stripes) != 0) in reshape_request()
6444 mddev->reshape_position = conf->reshape_progress; in reshape_request()
6454 conf->reshape_checkpoint = jiffies; in reshape_request()
6462 spin_lock_irq(&conf->device_lock); in reshape_request()
6463 conf->reshape_safe = mddev->reshape_position; in reshape_request()
6464 spin_unlock_irq(&conf->device_lock); in reshape_request()
6465 wake_up(&conf->wait_for_overlap); in reshape_request()
6475 struct r5conf *conf = mddev->private; in raid5_sync_request() local
6486 end_reshape(conf); in raid5_sync_request()
6494 conf->fullsync = 0; in raid5_sync_request()
6501 wait_event(conf->wait_for_overlap, conf->quiesce != 2); in raid5_sync_request()
6516 if (mddev->degraded >= conf->max_degraded && in raid5_sync_request()
6523 !conf->fullsync && in raid5_sync_request()
6525 sync_blocks >= RAID5_STRIPE_SECTORS(conf)) { in raid5_sync_request()
6527 do_div(sync_blocks, RAID5_STRIPE_SECTORS(conf)); in raid5_sync_request()
6530 return sync_blocks * RAID5_STRIPE_SECTORS(conf); in raid5_sync_request()
6535 sh = raid5_get_active_stripe(conf, NULL, sector_nr, in raid5_sync_request()
6538 sh = raid5_get_active_stripe(conf, NULL, sector_nr, 0); in raid5_sync_request()
6549 for (i = 0; i < conf->raid_disks; i++) { in raid5_sync_request()
6550 struct md_rdev *rdev = rcu_dereference(conf->disks[i].rdev); in raid5_sync_request()
6564 return RAID5_STRIPE_SECTORS(conf); in raid5_sync_request()
6567 static int retry_aligned_read(struct r5conf *conf, struct bio *raid_bio, in retry_aligned_read() argument
6587 ~((sector_t)RAID5_STRIPE_SECTORS(conf)-1); in retry_aligned_read()
6588 sector = raid5_compute_sector(conf, logical_sector, in retry_aligned_read()
6593 logical_sector += RAID5_STRIPE_SECTORS(conf), in retry_aligned_read()
6594 sector += RAID5_STRIPE_SECTORS(conf), in retry_aligned_read()
6601 sh = raid5_get_active_stripe(conf, NULL, sector, in retry_aligned_read()
6605 conf->retry_read_aligned = raid_bio; in retry_aligned_read()
6606 conf->retry_read_offset = scnt; in retry_aligned_read()
6612 conf->retry_read_aligned = raid_bio; in retry_aligned_read()
6613 conf->retry_read_offset = scnt; in retry_aligned_read()
6625 if (atomic_dec_and_test(&conf->active_aligned_reads)) in retry_aligned_read()
6626 wake_up(&conf->wait_for_quiescent); in retry_aligned_read()
6630 static int handle_active_stripes(struct r5conf *conf, int group, in handle_active_stripes() argument
6633 __must_hold(&conf->device_lock) in handle_active_stripes()
6640 (sh = __get_priority_stripe(conf, group)) != NULL) in handle_active_stripes()
6648 spin_unlock_irq(&conf->device_lock); in handle_active_stripes()
6649 log_flush_stripe_to_raid(conf); in handle_active_stripes()
6650 spin_lock_irq(&conf->device_lock); in handle_active_stripes()
6655 spin_unlock_irq(&conf->device_lock); in handle_active_stripes()
6657 release_inactive_stripe_list(conf, temp_inactive_list, in handle_active_stripes()
6660 r5l_flush_stripe_to_raid(conf->log); in handle_active_stripes()
6662 spin_lock_irq(&conf->device_lock); in handle_active_stripes()
6668 log_write_stripe_run(conf); in handle_active_stripes()
6672 spin_lock_irq(&conf->device_lock); in handle_active_stripes()
6675 __release_stripe(conf, batch[i], &temp_inactive_list[hash]); in handle_active_stripes()
6684 struct r5conf *conf = group->conf; in raid5_do_work() local
6685 struct mddev *mddev = conf->mddev; in raid5_do_work()
6686 int group_id = group - conf->worker_groups; in raid5_do_work()
6694 spin_lock_irq(&conf->device_lock); in raid5_do_work()
6698 released = release_stripe_list(conf, worker->temp_inactive_list); in raid5_do_work()
6700 batch_size = handle_active_stripes(conf, group_id, worker, in raid5_do_work()
6708 conf->device_lock); in raid5_do_work()
6712 spin_unlock_irq(&conf->device_lock); in raid5_do_work()
6714 flush_deferred_bios(conf); in raid5_do_work()
6716 r5l_flush_stripe_to_raid(conf->log); in raid5_do_work()
6734 struct r5conf *conf = mddev->private; in raid5d() local
6744 spin_lock_irq(&conf->device_lock); in raid5d()
6750 released = release_stripe_list(conf, conf->temp_inactive_list); in raid5d()
6752 clear_bit(R5_DID_ALLOC, &conf->cache_state); in raid5d()
6755 !list_empty(&conf->bitmap_list)) { in raid5d()
6757 conf->seq_flush++; in raid5d()
6758 spin_unlock_irq(&conf->device_lock); in raid5d()
6760 spin_lock_irq(&conf->device_lock); in raid5d()
6761 conf->seq_write = conf->seq_flush; in raid5d()
6762 activate_bit_delay(conf, conf->temp_inactive_list); in raid5d()
6764 raid5_activate_delayed(conf); in raid5d()
6766 while ((bio = remove_bio_from_retry(conf, &offset))) { in raid5d()
6768 spin_unlock_irq(&conf->device_lock); in raid5d()
6769 ok = retry_aligned_read(conf, bio, offset); in raid5d()
6770 spin_lock_irq(&conf->device_lock); in raid5d()
6776 batch_size = handle_active_stripes(conf, ANY_GROUP, NULL, in raid5d()
6777 conf->temp_inactive_list); in raid5d()
6783 spin_unlock_irq(&conf->device_lock); in raid5d()
6785 spin_lock_irq(&conf->device_lock); in raid5d()
6797 conf->device_lock); in raid5d()
6801 spin_unlock_irq(&conf->device_lock); in raid5d()
6802 if (test_and_clear_bit(R5_ALLOC_MORE, &conf->cache_state) && in raid5d()
6803 mutex_trylock(&conf->cache_size_mutex)) { in raid5d()
6804 grow_one_stripe(conf, __GFP_NOWARN); in raid5d()
6808 set_bit(R5_DID_ALLOC, &conf->cache_state); in raid5d()
6809 mutex_unlock(&conf->cache_size_mutex); in raid5d()
6812 flush_deferred_bios(conf); in raid5d()
6814 r5l_flush_stripe_to_raid(conf->log); in raid5d()
6825 struct r5conf *conf; in raid5_show_stripe_cache_size() local
6828 conf = mddev->private; in raid5_show_stripe_cache_size()
6829 if (conf) in raid5_show_stripe_cache_size()
6830 ret = sprintf(page, "%d\n", conf->min_nr_stripes); in raid5_show_stripe_cache_size()
6839 struct r5conf *conf = mddev->private; in raid5_set_cache_size() local
6844 conf->min_nr_stripes = size; in raid5_set_cache_size()
6845 mutex_lock(&conf->cache_size_mutex); in raid5_set_cache_size()
6846 while (size < conf->max_nr_stripes && in raid5_set_cache_size()
6847 drop_one_stripe(conf)) in raid5_set_cache_size()
6849 mutex_unlock(&conf->cache_size_mutex); in raid5_set_cache_size()
6853 mutex_lock(&conf->cache_size_mutex); in raid5_set_cache_size()
6854 while (size > conf->max_nr_stripes) in raid5_set_cache_size()
6855 if (!grow_one_stripe(conf, GFP_KERNEL)) { in raid5_set_cache_size()
6856 conf->min_nr_stripes = conf->max_nr_stripes; in raid5_set_cache_size()
6860 mutex_unlock(&conf->cache_size_mutex); in raid5_set_cache_size()
6869 struct r5conf *conf; in raid5_store_stripe_cache_size() local
6880 conf = mddev->private; in raid5_store_stripe_cache_size()
6881 if (!conf) in raid5_store_stripe_cache_size()
6898 struct r5conf *conf = mddev->private; in raid5_show_rmw_level() local
6899 if (conf) in raid5_show_rmw_level()
6900 return sprintf(page, "%d\n", conf->rmw_level); in raid5_show_rmw_level()
6908 struct r5conf *conf = mddev->private; in raid5_store_rmw_level() local
6911 if (!conf) in raid5_store_rmw_level()
6928 conf->rmw_level = new; in raid5_store_rmw_level()
6940 struct r5conf *conf; in raid5_show_stripe_size() local
6944 conf = mddev->private; in raid5_show_stripe_size()
6945 if (conf) in raid5_show_stripe_size()
6946 ret = sprintf(page, "%lu\n", RAID5_STRIPE_SIZE(conf)); in raid5_show_stripe_size()
6955 struct r5conf *conf; in raid5_store_stripe_size() local
6979 conf = mddev->private; in raid5_store_stripe_size()
6980 if (!conf) { in raid5_store_stripe_size()
6985 if (new == conf->stripe_size) in raid5_store_stripe_size()
6989 conf->stripe_size, new); in raid5_store_stripe_size()
7000 mutex_lock(&conf->cache_size_mutex); in raid5_store_stripe_size()
7001 size = conf->max_nr_stripes; in raid5_store_stripe_size()
7003 shrink_stripes(conf); in raid5_store_stripe_size()
7005 conf->stripe_size = new; in raid5_store_stripe_size()
7006 conf->stripe_shift = ilog2(new) - 9; in raid5_store_stripe_size()
7007 conf->stripe_sectors = new >> 9; in raid5_store_stripe_size()
7008 if (grow_stripes(conf, size)) { in raid5_store_stripe_size()
7013 mutex_unlock(&conf->cache_size_mutex); in raid5_store_stripe_size()
7035 struct r5conf *conf; in raid5_show_preread_threshold() local
7038 conf = mddev->private; in raid5_show_preread_threshold()
7039 if (conf) in raid5_show_preread_threshold()
7040 ret = sprintf(page, "%d\n", conf->bypass_threshold); in raid5_show_preread_threshold()
7048 struct r5conf *conf; in raid5_store_preread_threshold() local
7060 conf = mddev->private; in raid5_store_preread_threshold()
7061 if (!conf) in raid5_store_preread_threshold()
7063 else if (new > conf->min_nr_stripes) in raid5_store_preread_threshold()
7066 conf->bypass_threshold = new; in raid5_store_preread_threshold()
7080 struct r5conf *conf; in raid5_show_skip_copy() local
7083 conf = mddev->private; in raid5_show_skip_copy()
7084 if (conf) in raid5_show_skip_copy()
7085 ret = sprintf(page, "%d\n", conf->skip_copy); in raid5_show_skip_copy()
7093 struct r5conf *conf; in raid5_store_skip_copy() local
7106 conf = mddev->private; in raid5_store_skip_copy()
7107 if (!conf) in raid5_store_skip_copy()
7109 else if (new != conf->skip_copy) { in raid5_store_skip_copy()
7113 conf->skip_copy = new; in raid5_store_skip_copy()
7132 struct r5conf *conf = mddev->private; in stripe_cache_active_show() local
7133 if (conf) in stripe_cache_active_show()
7134 return sprintf(page, "%d\n", atomic_read(&conf->active_stripes)); in stripe_cache_active_show()
7145 struct r5conf *conf; in raid5_show_group_thread_cnt() local
7148 conf = mddev->private; in raid5_show_group_thread_cnt()
7149 if (conf) in raid5_show_group_thread_cnt()
7150 ret = sprintf(page, "%d\n", conf->worker_cnt_per_group); in raid5_show_group_thread_cnt()
7155 static int alloc_thread_groups(struct r5conf *conf, int cnt,
7161 struct r5conf *conf; in raid5_store_group_thread_cnt() local
7178 conf = mddev->private; in raid5_store_group_thread_cnt()
7179 if (!conf) in raid5_store_group_thread_cnt()
7181 else if (new != conf->worker_cnt_per_group) { in raid5_store_group_thread_cnt()
7184 old_groups = conf->worker_groups; in raid5_store_group_thread_cnt()
7188 err = alloc_thread_groups(conf, new, &group_cnt, &new_groups); in raid5_store_group_thread_cnt()
7190 spin_lock_irq(&conf->device_lock); in raid5_store_group_thread_cnt()
7191 conf->group_cnt = group_cnt; in raid5_store_group_thread_cnt()
7192 conf->worker_cnt_per_group = new; in raid5_store_group_thread_cnt()
7193 conf->worker_groups = new_groups; in raid5_store_group_thread_cnt()
7194 spin_unlock_irq(&conf->device_lock); in raid5_store_group_thread_cnt()
7229 static int alloc_thread_groups(struct r5conf *conf, int cnt, int *group_cnt, in alloc_thread_groups() argument
7258 group->conf = conf; in alloc_thread_groups()
7274 static void free_thread_groups(struct r5conf *conf) in free_thread_groups() argument
7276 if (conf->worker_groups) in free_thread_groups()
7277 kfree(conf->worker_groups[0].workers); in free_thread_groups()
7278 kfree(conf->worker_groups); in free_thread_groups()
7279 conf->worker_groups = NULL; in free_thread_groups()
7285 struct r5conf *conf = mddev->private; in raid5_size() local
7291 raid_disks = min(conf->raid_disks, conf->previous_raid_disks); in raid5_size()
7293 sectors &= ~((sector_t)conf->chunk_sectors - 1); in raid5_size()
7294 sectors &= ~((sector_t)conf->prev_chunk_sectors - 1); in raid5_size()
7295 return sectors * (raid_disks - conf->max_degraded); in raid5_size()
7298 static void free_scratch_buffer(struct r5conf *conf, struct raid5_percpu *percpu) in free_scratch_buffer() argument
7306 static int alloc_scratch_buffer(struct r5conf *conf, struct raid5_percpu *percpu) in alloc_scratch_buffer() argument
7308 if (conf->level == 6 && !percpu->spare_page) { in alloc_scratch_buffer()
7315 max(conf->raid_disks, in alloc_scratch_buffer()
7316 conf->previous_raid_disks), in alloc_scratch_buffer()
7317 max(conf->chunk_sectors, in alloc_scratch_buffer()
7318 conf->prev_chunk_sectors) in alloc_scratch_buffer()
7319 / RAID5_STRIPE_SECTORS(conf))) { in alloc_scratch_buffer()
7320 free_scratch_buffer(conf, percpu); in alloc_scratch_buffer()
7330 struct r5conf *conf = hlist_entry_safe(node, struct r5conf, node); in raid456_cpu_dead() local
7332 free_scratch_buffer(conf, per_cpu_ptr(conf->percpu, cpu)); in raid456_cpu_dead()
7336 static void raid5_free_percpu(struct r5conf *conf) in raid5_free_percpu() argument
7338 if (!conf->percpu) in raid5_free_percpu()
7341 cpuhp_state_remove_instance(CPUHP_MD_RAID5_PREPARE, &conf->node); in raid5_free_percpu()
7342 free_percpu(conf->percpu); in raid5_free_percpu()
7345 static void free_conf(struct r5conf *conf) in free_conf() argument
7349 log_exit(conf); in free_conf()
7351 unregister_shrinker(&conf->shrinker); in free_conf()
7352 free_thread_groups(conf); in free_conf()
7353 shrink_stripes(conf); in free_conf()
7354 raid5_free_percpu(conf); in free_conf()
7355 for (i = 0; i < conf->pool_size; i++) in free_conf()
7356 if (conf->disks[i].extra_page) in free_conf()
7357 put_page(conf->disks[i].extra_page); in free_conf()
7358 kfree(conf->disks); in free_conf()
7359 bioset_exit(&conf->bio_split); in free_conf()
7360 kfree(conf->stripe_hashtbl); in free_conf()
7361 kfree(conf->pending_data); in free_conf()
7362 kfree(conf); in free_conf()
7367 struct r5conf *conf = hlist_entry_safe(node, struct r5conf, node); in raid456_cpu_up_prepare() local
7368 struct raid5_percpu *percpu = per_cpu_ptr(conf->percpu, cpu); in raid456_cpu_up_prepare()
7370 if (alloc_scratch_buffer(conf, percpu)) { in raid456_cpu_up_prepare()
7378 static int raid5_alloc_percpu(struct r5conf *conf) in raid5_alloc_percpu() argument
7382 conf->percpu = alloc_percpu(struct raid5_percpu); in raid5_alloc_percpu()
7383 if (!conf->percpu) in raid5_alloc_percpu()
7386 err = cpuhp_state_add_instance(CPUHP_MD_RAID5_PREPARE, &conf->node); in raid5_alloc_percpu()
7388 conf->scribble_disks = max(conf->raid_disks, in raid5_alloc_percpu()
7389 conf->previous_raid_disks); in raid5_alloc_percpu()
7390 conf->scribble_sectors = max(conf->chunk_sectors, in raid5_alloc_percpu()
7391 conf->prev_chunk_sectors); in raid5_alloc_percpu()
7399 struct r5conf *conf = container_of(shrink, struct r5conf, shrinker); in raid5_cache_scan() local
7402 if (mutex_trylock(&conf->cache_size_mutex)) { in raid5_cache_scan()
7405 conf->max_nr_stripes > conf->min_nr_stripes) { in raid5_cache_scan()
7406 if (drop_one_stripe(conf) == 0) { in raid5_cache_scan()
7412 mutex_unlock(&conf->cache_size_mutex); in raid5_cache_scan()
7420 struct r5conf *conf = container_of(shrink, struct r5conf, shrinker); in raid5_cache_count() local
7422 if (conf->max_nr_stripes < conf->min_nr_stripes) in raid5_cache_count()
7425 return conf->max_nr_stripes - conf->min_nr_stripes; in raid5_cache_count()
7430 struct r5conf *conf; in setup_conf() local
7469 conf = kzalloc(sizeof(struct r5conf), GFP_KERNEL); in setup_conf()
7470 if (conf == NULL) in setup_conf()
7474 conf->stripe_size = DEFAULT_STRIPE_SIZE; in setup_conf()
7475 conf->stripe_shift = ilog2(DEFAULT_STRIPE_SIZE) - 9; in setup_conf()
7476 conf->stripe_sectors = DEFAULT_STRIPE_SIZE >> 9; in setup_conf()
7478 INIT_LIST_HEAD(&conf->free_list); in setup_conf()
7479 INIT_LIST_HEAD(&conf->pending_list); in setup_conf()
7480 conf->pending_data = kcalloc(PENDING_IO_MAX, in setup_conf()
7483 if (!conf->pending_data) in setup_conf()
7486 list_add(&conf->pending_data[i].sibling, &conf->free_list); in setup_conf()
7488 if (!alloc_thread_groups(conf, 0, &group_cnt, &new_group)) { in setup_conf()
7489 conf->group_cnt = group_cnt; in setup_conf()
7490 conf->worker_cnt_per_group = 0; in setup_conf()
7491 conf->worker_groups = new_group; in setup_conf()
7494 spin_lock_init(&conf->device_lock); in setup_conf()
7495 seqcount_spinlock_init(&conf->gen_lock, &conf->device_lock); in setup_conf()
7496 mutex_init(&conf->cache_size_mutex); in setup_conf()
7498 init_waitqueue_head(&conf->wait_for_quiescent); in setup_conf()
7499 init_waitqueue_head(&conf->wait_for_stripe); in setup_conf()
7500 init_waitqueue_head(&conf->wait_for_overlap); in setup_conf()
7501 INIT_LIST_HEAD(&conf->handle_list); in setup_conf()
7502 INIT_LIST_HEAD(&conf->loprio_list); in setup_conf()
7503 INIT_LIST_HEAD(&conf->hold_list); in setup_conf()
7504 INIT_LIST_HEAD(&conf->delayed_list); in setup_conf()
7505 INIT_LIST_HEAD(&conf->bitmap_list); in setup_conf()
7506 init_llist_head(&conf->released_stripes); in setup_conf()
7507 atomic_set(&conf->active_stripes, 0); in setup_conf()
7508 atomic_set(&conf->preread_active_stripes, 0); in setup_conf()
7509 atomic_set(&conf->active_aligned_reads, 0); in setup_conf()
7510 spin_lock_init(&conf->pending_bios_lock); in setup_conf()
7511 conf->batch_bio_dispatch = true; in setup_conf()
7516 conf->batch_bio_dispatch = false; in setup_conf()
7521 conf->bypass_threshold = BYPASS_THRESHOLD; in setup_conf()
7522 conf->recovery_disabled = mddev->recovery_disabled - 1; in setup_conf()
7524 conf->raid_disks = mddev->raid_disks; in setup_conf()
7526 conf->previous_raid_disks = mddev->raid_disks; in setup_conf()
7528 conf->previous_raid_disks = mddev->raid_disks - mddev->delta_disks; in setup_conf()
7529 max_disks = max(conf->raid_disks, conf->previous_raid_disks); in setup_conf()
7531 conf->disks = kcalloc(max_disks, sizeof(struct disk_info), in setup_conf()
7534 if (!conf->disks) in setup_conf()
7538 conf->disks[i].extra_page = alloc_page(GFP_KERNEL); in setup_conf()
7539 if (!conf->disks[i].extra_page) in setup_conf()
7543 ret = bioset_init(&conf->bio_split, BIO_POOL_SIZE, 0, 0); in setup_conf()
7546 conf->mddev = mddev; in setup_conf()
7549 conf->stripe_hashtbl = kzalloc(PAGE_SIZE, GFP_KERNEL); in setup_conf()
7550 if (!conf->stripe_hashtbl) in setup_conf()
7558 spin_lock_init(conf->hash_locks); in setup_conf()
7560 spin_lock_init(conf->hash_locks + i); in setup_conf()
7563 INIT_LIST_HEAD(conf->inactive_list + i); in setup_conf()
7566 INIT_LIST_HEAD(conf->temp_inactive_list + i); in setup_conf()
7568 atomic_set(&conf->r5c_cached_full_stripes, 0); in setup_conf()
7569 INIT_LIST_HEAD(&conf->r5c_full_stripe_list); in setup_conf()
7570 atomic_set(&conf->r5c_cached_partial_stripes, 0); in setup_conf()
7571 INIT_LIST_HEAD(&conf->r5c_partial_stripe_list); in setup_conf()
7572 atomic_set(&conf->r5c_flushing_full_stripes, 0); in setup_conf()
7573 atomic_set(&conf->r5c_flushing_partial_stripes, 0); in setup_conf()
7575 conf->level = mddev->new_level; in setup_conf()
7576 conf->chunk_sectors = mddev->new_chunk_sectors; in setup_conf()
7577 ret = raid5_alloc_percpu(conf); in setup_conf()
7589 disk = conf->disks + raid_disk; in setup_conf()
7606 conf->fullsync = 1; in setup_conf()
7609 conf->level = mddev->new_level; in setup_conf()
7610 if (conf->level == 6) { in setup_conf()
7611 conf->max_degraded = 2; in setup_conf()
7613 conf->rmw_level = PARITY_ENABLE_RMW; in setup_conf()
7615 conf->rmw_level = PARITY_DISABLE_RMW; in setup_conf()
7617 conf->max_degraded = 1; in setup_conf()
7618 conf->rmw_level = PARITY_ENABLE_RMW; in setup_conf()
7620 conf->algorithm = mddev->new_layout; in setup_conf()
7621 conf->reshape_progress = mddev->reshape_position; in setup_conf()
7622 if (conf->reshape_progress != MaxSector) { in setup_conf()
7623 conf->prev_chunk_sectors = mddev->chunk_sectors; in setup_conf()
7624 conf->prev_algo = mddev->layout; in setup_conf()
7626 conf->prev_chunk_sectors = conf->chunk_sectors; in setup_conf()
7627 conf->prev_algo = conf->algorithm; in setup_conf()
7630 conf->min_nr_stripes = NR_STRIPES; in setup_conf()
7633 ((mddev->chunk_sectors << 9) / RAID5_STRIPE_SIZE(conf)) * 4, in setup_conf()
7634 ((mddev->new_chunk_sectors << 9) / RAID5_STRIPE_SIZE(conf)) * 4); in setup_conf()
7635 conf->min_nr_stripes = max(NR_STRIPES, stripes); in setup_conf()
7636 if (conf->min_nr_stripes != NR_STRIPES) in setup_conf()
7638 mdname(mddev), conf->min_nr_stripes); in setup_conf()
7640 memory = conf->min_nr_stripes * (sizeof(struct stripe_head) + in setup_conf()
7642 atomic_set(&conf->empty_inactive_list_nr, NR_STRIPE_HASH_LOCKS); in setup_conf()
7643 if (grow_stripes(conf, conf->min_nr_stripes)) { in setup_conf()
7655 conf->shrinker.seeks = DEFAULT_SEEKS * conf->raid_disks * 4; in setup_conf()
7656 conf->shrinker.scan_objects = raid5_cache_scan; in setup_conf()
7657 conf->shrinker.count_objects = raid5_cache_count; in setup_conf()
7658 conf->shrinker.batch = 128; in setup_conf()
7659 conf->shrinker.flags = 0; in setup_conf()
7660 ret = register_shrinker(&conf->shrinker, "md-raid5:%s", mdname(mddev)); in setup_conf()
7668 conf->thread = md_register_thread(raid5d, mddev, pers_name); in setup_conf()
7669 if (!conf->thread) { in setup_conf()
7676 return conf; in setup_conf()
7679 if (conf) in setup_conf()
7680 free_conf(conf); in setup_conf()
7710 static void raid5_set_io_opt(struct r5conf *conf) in raid5_set_io_opt() argument
7712 blk_queue_io_opt(conf->mddev->queue, (conf->chunk_sectors << 9) * in raid5_set_io_opt()
7713 (conf->raid_disks - conf->max_degraded)); in raid5_set_io_opt()
7718 struct r5conf *conf; in raid5_run() local
7872 conf = setup_conf(mddev); in raid5_run()
7874 conf = mddev->private; in raid5_run()
7876 if (IS_ERR(conf)) { in raid5_run()
7877 ret = PTR_ERR(conf); in raid5_run()
7891 conf->min_offset_diff = min_offset_diff; in raid5_run()
7892 mddev->thread = conf->thread; in raid5_run()
7893 conf->thread = NULL; in raid5_run()
7894 mddev->private = conf; in raid5_run()
7896 for (i = 0; i < conf->raid_disks && conf->previous_raid_disks; in raid5_run()
7898 rdev = rdev_mdlock_deref(mddev, conf->disks[i].rdev); in raid5_run()
7899 if (!rdev && conf->disks[i].replacement) { in raid5_run()
7902 conf->disks[i].replacement); in raid5_run()
7903 conf->disks[i].replacement = NULL; in raid5_run()
7905 rcu_assign_pointer(conf->disks[i].rdev, rdev); in raid5_run()
7909 if (rcu_access_pointer(conf->disks[i].replacement) && in raid5_run()
7910 conf->reshape_progress != MaxSector) { in raid5_run()
7935 conf->algorithm, in raid5_run()
7936 conf->raid_disks, in raid5_run()
7937 conf->max_degraded)) in raid5_run()
7941 conf->prev_algo, in raid5_run()
7942 conf->previous_raid_disks, in raid5_run()
7943 conf->max_degraded)) in raid5_run()
7951 mddev->degraded = raid5_calc_degraded(conf); in raid5_run()
7953 if (has_failed(conf)) { in raid5_run()
7955 mdname(mddev), mddev->degraded, conf->raid_disks); in raid5_run()
7979 mdname(mddev), conf->level, in raid5_run()
7983 print_raid5_conf(conf); in raid5_run()
7985 if (conf->reshape_progress != MaxSector) { in raid5_run()
7986 conf->reshape_safe = conf->reshape_progress; in raid5_run()
7987 atomic_set(&conf->reshape_stripes, 0); in raid5_run()
8013 int data_disks = conf->previous_raid_disks - conf->max_degraded; in raid5_run()
8019 raid5_set_io_opt(conf); in raid5_run()
8063 RAID5_MAX_REQ_STRIPES << RAID5_STRIPE_SHIFT(conf)); in raid5_run()
8069 if (log_init(conf, journal_dev, raid5_has_ppl(conf))) in raid5_run()
8075 print_raid5_conf(conf); in raid5_run()
8076 free_conf(conf); in raid5_run()
8087 struct r5conf *conf = priv; in raid5_free() local
8089 free_conf(conf); in raid5_free()
8096 struct r5conf *conf = mddev->private; in raid5_status() local
8100 conf->chunk_sectors / 2, mddev->layout); in raid5_status()
8101 seq_printf (seq, " [%d/%d] [", conf->raid_disks, conf->raid_disks - mddev->degraded); in raid5_status()
8103 for (i = 0; i < conf->raid_disks; i++) { in raid5_status()
8104 struct md_rdev *rdev = rcu_dereference(conf->disks[i].rdev); in raid5_status()
8111 static void print_raid5_conf (struct r5conf *conf) in print_raid5_conf() argument
8116 pr_debug("RAID conf printout:\n"); in print_raid5_conf()
8117 if (!conf) { in print_raid5_conf()
8118 pr_debug("(conf==NULL)\n"); in print_raid5_conf()
8121 pr_debug(" --- level:%d rd:%d wd:%d\n", conf->level, in print_raid5_conf()
8122 conf->raid_disks, in print_raid5_conf()
8123 conf->raid_disks - conf->mddev->degraded); in print_raid5_conf()
8126 for (i = 0; i < conf->raid_disks; i++) { in print_raid5_conf()
8127 rdev = rcu_dereference(conf->disks[i].rdev); in print_raid5_conf()
8139 struct r5conf *conf = mddev->private; in raid5_spare_active() local
8144 for (i = 0; i < conf->raid_disks; i++) { in raid5_spare_active()
8145 rdev = rdev_mdlock_deref(mddev, conf->disks[i].rdev); in raid5_spare_active()
8147 conf->disks[i].replacement); in raid5_spare_active()
8174 spin_lock_irqsave(&conf->device_lock, flags); in raid5_spare_active()
8175 mddev->degraded = raid5_calc_degraded(conf); in raid5_spare_active()
8176 spin_unlock_irqrestore(&conf->device_lock, flags); in raid5_spare_active()
8177 print_raid5_conf(conf); in raid5_spare_active()
8183 struct r5conf *conf = mddev->private; in raid5_remove_disk() local
8190 print_raid5_conf(conf); in raid5_remove_disk()
8191 if (test_bit(Journal, &rdev->flags) && conf->log) { in raid5_remove_disk()
8198 if (atomic_read(&conf->active_stripes) || in raid5_remove_disk()
8199 atomic_read(&conf->r5c_cached_full_stripes) || in raid5_remove_disk()
8200 atomic_read(&conf->r5c_cached_partial_stripes)) { in raid5_remove_disk()
8203 log_exit(conf); in raid5_remove_disk()
8206 if (unlikely(number >= conf->pool_size)) in raid5_remove_disk()
8208 p = conf->disks + number; in raid5_remove_disk()
8216 if (number >= conf->raid_disks && in raid5_remove_disk()
8217 conf->reshape_progress == MaxSector) in raid5_remove_disk()
8229 mddev->recovery_disabled != conf->recovery_disabled && in raid5_remove_disk()
8230 !has_failed(conf) && in raid5_remove_disk()
8233 number < conf->raid_disks) { in raid5_remove_disk()
8248 err = log_modify(conf, rdev, false); in raid5_remove_disk()
8264 err = log_modify(conf, tmp, true); in raid5_remove_disk()
8270 print_raid5_conf(conf); in raid5_remove_disk()
8276 struct r5conf *conf = mddev->private; in raid5_add_disk() local
8282 int last = conf->raid_disks - 1; in raid5_add_disk()
8285 if (conf->log) in raid5_add_disk()
8293 ret = log_init(conf, rdev, false); in raid5_add_disk()
8297 ret = r5l_start(conf->log); in raid5_add_disk()
8303 if (mddev->recovery_disabled == conf->recovery_disabled) in raid5_add_disk()
8306 if (rdev->saved_raid_disk < 0 && has_failed(conf)) in raid5_add_disk()
8319 conf->disks[rdev->saved_raid_disk].rdev == NULL) in raid5_add_disk()
8323 p = conf->disks + disk; in raid5_add_disk()
8328 conf->fullsync = 1; in raid5_add_disk()
8331 err = log_modify(conf, rdev, true); in raid5_add_disk()
8337 p = conf->disks + disk; in raid5_add_disk()
8345 conf->fullsync = 1; in raid5_add_disk()
8351 print_raid5_conf(conf); in raid5_add_disk()
8365 struct r5conf *conf = mddev->private; in raid5_resize() local
8367 if (raid5_has_log(conf) || raid5_has_ppl(conf)) in raid5_resize()
8369 sectors &= ~((sector_t)conf->chunk_sectors - 1); in raid5_resize()
8400 struct r5conf *conf = mddev->private; in check_stripe_cache() local
8401 if (((mddev->chunk_sectors << 9) / RAID5_STRIPE_SIZE(conf)) * 4 in check_stripe_cache()
8402 > conf->min_nr_stripes || in check_stripe_cache()
8403 ((mddev->new_chunk_sectors << 9) / RAID5_STRIPE_SIZE(conf)) * 4 in check_stripe_cache()
8404 > conf->min_nr_stripes) { in check_stripe_cache()
8408 / RAID5_STRIPE_SIZE(conf))*4); in check_stripe_cache()
8416 struct r5conf *conf = mddev->private; in check_reshape() local
8418 if (raid5_has_log(conf) || raid5_has_ppl(conf)) in check_reshape()
8424 if (has_failed(conf)) in check_reshape()
8444 if (resize_chunks(conf, in check_reshape()
8445 conf->previous_raid_disks in check_reshape()
8452 if (conf->previous_raid_disks + mddev->delta_disks <= conf->pool_size) in check_reshape()
8454 return resize_stripes(conf, (conf->previous_raid_disks in check_reshape()
8460 struct r5conf *conf = mddev->private; in raid5_start_reshape() local
8471 if (has_failed(conf)) in raid5_start_reshape()
8480 if (spares - mddev->degraded < mddev->delta_disks - conf->max_degraded) in raid5_start_reshape()
8490 if (raid5_size(mddev, 0, conf->raid_disks + mddev->delta_disks) in raid5_start_reshape()
8497 atomic_set(&conf->reshape_stripes, 0); in raid5_start_reshape()
8498 spin_lock_irq(&conf->device_lock); in raid5_start_reshape()
8499 write_seqcount_begin(&conf->gen_lock); in raid5_start_reshape()
8500 conf->previous_raid_disks = conf->raid_disks; in raid5_start_reshape()
8501 conf->raid_disks += mddev->delta_disks; in raid5_start_reshape()
8502 conf->prev_chunk_sectors = conf->chunk_sectors; in raid5_start_reshape()
8503 conf->chunk_sectors = mddev->new_chunk_sectors; in raid5_start_reshape()
8504 conf->prev_algo = conf->algorithm; in raid5_start_reshape()
8505 conf->algorithm = mddev->new_layout; in raid5_start_reshape()
8506 conf->generation++; in raid5_start_reshape()
8512 conf->reshape_progress = raid5_size(mddev, 0, 0); in raid5_start_reshape()
8514 conf->reshape_progress = 0; in raid5_start_reshape()
8515 conf->reshape_safe = conf->reshape_progress; in raid5_start_reshape()
8516 write_seqcount_end(&conf->gen_lock); in raid5_start_reshape()
8517 spin_unlock_irq(&conf->device_lock); in raid5_start_reshape()
8539 >= conf->previous_raid_disks) in raid5_start_reshape()
8547 } else if (rdev->raid_disk >= conf->previous_raid_disks in raid5_start_reshape()
8557 spin_lock_irqsave(&conf->device_lock, flags); in raid5_start_reshape()
8558 mddev->degraded = raid5_calc_degraded(conf); in raid5_start_reshape()
8559 spin_unlock_irqrestore(&conf->device_lock, flags); in raid5_start_reshape()
8561 mddev->raid_disks = conf->raid_disks; in raid5_start_reshape()
8562 mddev->reshape_position = conf->reshape_progress; in raid5_start_reshape()
8574 spin_lock_irq(&conf->device_lock); in raid5_start_reshape()
8575 write_seqcount_begin(&conf->gen_lock); in raid5_start_reshape()
8576 mddev->raid_disks = conf->raid_disks = conf->previous_raid_disks; in raid5_start_reshape()
8578 conf->chunk_sectors = conf->prev_chunk_sectors; in raid5_start_reshape()
8579 mddev->new_layout = conf->algorithm = conf->prev_algo; in raid5_start_reshape()
8583 conf->generation --; in raid5_start_reshape()
8584 conf->reshape_progress = MaxSector; in raid5_start_reshape()
8586 write_seqcount_end(&conf->gen_lock); in raid5_start_reshape()
8587 spin_unlock_irq(&conf->device_lock); in raid5_start_reshape()
8590 conf->reshape_checkpoint = jiffies; in raid5_start_reshape()
8597 * changes needed in 'conf'
8599 static void end_reshape(struct r5conf *conf) in end_reshape() argument
8602 if (!test_bit(MD_RECOVERY_INTR, &conf->mddev->recovery)) { in end_reshape()
8605 spin_lock_irq(&conf->device_lock); in end_reshape()
8606 conf->previous_raid_disks = conf->raid_disks; in end_reshape()
8607 md_finish_reshape(conf->mddev); in end_reshape()
8609 conf->reshape_progress = MaxSector; in end_reshape()
8610 conf->mddev->reshape_position = MaxSector; in end_reshape()
8611 rdev_for_each(rdev, conf->mddev) in end_reshape()
8616 spin_unlock_irq(&conf->device_lock); in end_reshape()
8617 wake_up(&conf->wait_for_overlap); in end_reshape()
8619 if (conf->mddev->queue) in end_reshape()
8620 raid5_set_io_opt(conf); in end_reshape()
8629 struct r5conf *conf = mddev->private; in raid5_finish_reshape() local
8636 spin_lock_irq(&conf->device_lock); in raid5_finish_reshape()
8637 mddev->degraded = raid5_calc_degraded(conf); in raid5_finish_reshape()
8638 spin_unlock_irq(&conf->device_lock); in raid5_finish_reshape()
8639 for (d = conf->raid_disks ; in raid5_finish_reshape()
8640 d < conf->raid_disks - mddev->delta_disks; in raid5_finish_reshape()
8643 conf->disks[d].rdev); in raid5_finish_reshape()
8647 conf->disks[d].replacement); in raid5_finish_reshape()
8652 mddev->layout = conf->algorithm; in raid5_finish_reshape()
8653 mddev->chunk_sectors = conf->chunk_sectors; in raid5_finish_reshape()
8662 struct r5conf *conf = mddev->private; in raid5_quiesce() local
8666 lock_all_device_hash_locks_irq(conf); in raid5_quiesce()
8670 r5c_flush_cache(conf, INT_MAX); in raid5_quiesce()
8674 smp_store_release(&conf->quiesce, 2); in raid5_quiesce()
8675 wait_event_cmd(conf->wait_for_quiescent, in raid5_quiesce()
8676 atomic_read(&conf->active_stripes) == 0 && in raid5_quiesce()
8677 atomic_read(&conf->active_aligned_reads) == 0, in raid5_quiesce()
8678 unlock_all_device_hash_locks_irq(conf), in raid5_quiesce()
8679 lock_all_device_hash_locks_irq(conf)); in raid5_quiesce()
8680 conf->quiesce = 1; in raid5_quiesce()
8681 unlock_all_device_hash_locks_irq(conf); in raid5_quiesce()
8683 wake_up(&conf->wait_for_overlap); in raid5_quiesce()
8686 lock_all_device_hash_locks_irq(conf); in raid5_quiesce()
8687 conf->quiesce = 0; in raid5_quiesce()
8688 wake_up(&conf->wait_for_quiescent); in raid5_quiesce()
8689 wake_up(&conf->wait_for_overlap); in raid5_quiesce()
8690 unlock_all_device_hash_locks_irq(conf); in raid5_quiesce()
8692 log_quiesce(conf, quiesce); in raid5_quiesce()
8793 struct r5conf *conf = mddev->private; in raid5_check_reshape() local
8813 conf->algorithm = mddev->new_layout; in raid5_check_reshape()
8817 conf->chunk_sectors = new_chunk ; in raid5_check_reshape()
8936 struct r5conf *conf; in raid5_change_consistency_policy() local
8942 conf = mddev->private; in raid5_change_consistency_policy()
8943 if (!conf) { in raid5_change_consistency_policy()
8950 if (!raid5_has_ppl(conf) && conf->level == 5) { in raid5_change_consistency_policy()
8951 err = log_init(conf, NULL, true); in raid5_change_consistency_policy()
8953 err = resize_stripes(conf, conf->pool_size); in raid5_change_consistency_policy()
8956 log_exit(conf); in raid5_change_consistency_policy()
8963 if (raid5_has_ppl(conf)) { in raid5_change_consistency_policy()
8965 log_exit(conf); in raid5_change_consistency_policy()
8967 err = resize_stripes(conf, conf->pool_size); in raid5_change_consistency_policy()
8968 } else if (test_bit(MD_HAS_JOURNAL, &conf->mddev->flags) && in raid5_change_consistency_policy()
8969 r5l_log_disk_error(conf)) { in raid5_change_consistency_policy()
9001 struct r5conf *conf = mddev->private; in raid5_start() local
9003 return r5l_start(conf->log); in raid5_start()