Lines Matching refs:conf
74 static inline struct hlist_head *stripe_hash(struct r5conf *conf, sector_t sect) in stripe_hash() argument
76 int hash = (sect >> RAID5_STRIPE_SHIFT(conf)) & HASH_MASK; in stripe_hash()
77 return &conf->stripe_hashtbl[hash]; in stripe_hash()
80 static inline int stripe_hash_locks_hash(struct r5conf *conf, sector_t sect) in stripe_hash_locks_hash() argument
82 return (sect >> RAID5_STRIPE_SHIFT(conf)) & STRIPE_HASH_LOCKS_MASK; in stripe_hash_locks_hash()
85 static inline void lock_device_hash_lock(struct r5conf *conf, int hash) in lock_device_hash_lock() argument
86 __acquires(&conf->device_lock) in lock_device_hash_lock()
88 spin_lock_irq(conf->hash_locks + hash); in lock_device_hash_lock()
89 spin_lock(&conf->device_lock); in lock_device_hash_lock()
92 static inline void unlock_device_hash_lock(struct r5conf *conf, int hash) in unlock_device_hash_lock() argument
93 __releases(&conf->device_lock) in unlock_device_hash_lock()
95 spin_unlock(&conf->device_lock); in unlock_device_hash_lock()
96 spin_unlock_irq(conf->hash_locks + hash); in unlock_device_hash_lock()
99 static inline void lock_all_device_hash_locks_irq(struct r5conf *conf) in lock_all_device_hash_locks_irq() argument
100 __acquires(&conf->device_lock) in lock_all_device_hash_locks_irq()
103 spin_lock_irq(conf->hash_locks); in lock_all_device_hash_locks_irq()
105 spin_lock_nest_lock(conf->hash_locks + i, conf->hash_locks); in lock_all_device_hash_locks_irq()
106 spin_lock(&conf->device_lock); in lock_all_device_hash_locks_irq()
109 static inline void unlock_all_device_hash_locks_irq(struct r5conf *conf) in unlock_all_device_hash_locks_irq() argument
110 __releases(&conf->device_lock) in unlock_all_device_hash_locks_irq()
113 spin_unlock(&conf->device_lock); in unlock_all_device_hash_locks_irq()
115 spin_unlock(conf->hash_locks + i); in unlock_all_device_hash_locks_irq()
116 spin_unlock_irq(conf->hash_locks); in unlock_all_device_hash_locks_irq()
158 static void print_raid5_conf(struct r5conf *conf);
177 struct r5conf *conf = sh->raid_conf; in raid5_wakeup_stripe_thread() local
189 group = conf->worker_groups + cpu_to_group(cpu); in raid5_wakeup_stripe_thread()
198 if (conf->worker_cnt_per_group == 0) { in raid5_wakeup_stripe_thread()
199 md_wakeup_thread(conf->mddev->thread); in raid5_wakeup_stripe_thread()
203 group = conf->worker_groups + cpu_to_group(sh->cpu); in raid5_wakeup_stripe_thread()
211 for (i = 1; i < conf->worker_cnt_per_group && thread_cnt > 0; i++) { in raid5_wakeup_stripe_thread()
221 static void do_release_stripe(struct r5conf *conf, struct stripe_head *sh, in do_release_stripe() argument
223 __must_hold(&conf->device_lock) in do_release_stripe()
229 BUG_ON(atomic_read(&conf->active_stripes)==0); in do_release_stripe()
231 if (r5c_is_writeback(conf->log)) in do_release_stripe()
243 (conf->quiesce && r5c_is_writeback(conf->log) && in do_release_stripe()
253 list_add_tail(&sh->lru, &conf->delayed_list); in do_release_stripe()
255 sh->bm_seq - conf->seq_write > 0) in do_release_stripe()
256 list_add_tail(&sh->lru, &conf->bitmap_list); in do_release_stripe()
260 if (conf->worker_cnt_per_group == 0) { in do_release_stripe()
263 &conf->loprio_list); in do_release_stripe()
266 &conf->handle_list); in do_release_stripe()
272 md_wakeup_thread(conf->mddev->thread); in do_release_stripe()
276 if (atomic_dec_return(&conf->preread_active_stripes) in do_release_stripe()
278 md_wakeup_thread(conf->mddev->thread); in do_release_stripe()
279 atomic_dec(&conf->active_stripes); in do_release_stripe()
281 if (!r5c_is_writeback(conf->log)) in do_release_stripe()
287 else if (injournal == conf->raid_disks - conf->max_degraded) { in do_release_stripe()
290 atomic_inc(&conf->r5c_cached_full_stripes); in do_release_stripe()
292 atomic_dec(&conf->r5c_cached_partial_stripes); in do_release_stripe()
293 list_add_tail(&sh->lru, &conf->r5c_full_stripe_list); in do_release_stripe()
294 r5c_check_cached_full_stripe(conf); in do_release_stripe()
301 list_add_tail(&sh->lru, &conf->r5c_partial_stripe_list); in do_release_stripe()
307 static void __release_stripe(struct r5conf *conf, struct stripe_head *sh, in __release_stripe() argument
309 __must_hold(&conf->device_lock) in __release_stripe()
312 do_release_stripe(conf, sh, temp_inactive_list); in __release_stripe()
322 static void release_inactive_stripe_list(struct r5conf *conf, in release_inactive_stripe_list() argument
343 spin_lock_irqsave(conf->hash_locks + hash, flags); in release_inactive_stripe_list()
344 if (list_empty(conf->inactive_list + hash) && in release_inactive_stripe_list()
346 atomic_dec(&conf->empty_inactive_list_nr); in release_inactive_stripe_list()
347 list_splice_tail_init(list, conf->inactive_list + hash); in release_inactive_stripe_list()
349 spin_unlock_irqrestore(conf->hash_locks + hash, flags); in release_inactive_stripe_list()
356 wake_up(&conf->wait_for_stripe); in release_inactive_stripe_list()
357 if (atomic_read(&conf->active_stripes) == 0) in release_inactive_stripe_list()
358 wake_up(&conf->wait_for_quiescent); in release_inactive_stripe_list()
359 if (conf->retry_read_aligned) in release_inactive_stripe_list()
360 md_wakeup_thread(conf->mddev->thread); in release_inactive_stripe_list()
364 static int release_stripe_list(struct r5conf *conf, in release_stripe_list() argument
366 __must_hold(&conf->device_lock) in release_stripe_list()
372 head = llist_del_all(&conf->released_stripes); in release_stripe_list()
386 __release_stripe(conf, sh, &temp_inactive_list[hash]); in release_stripe_list()
395 struct r5conf *conf = sh->raid_conf; in raid5_release_stripe() local
406 if (unlikely(!conf->mddev->thread) || in raid5_release_stripe()
409 wakeup = llist_add(&sh->release_list, &conf->released_stripes); in raid5_release_stripe()
411 md_wakeup_thread(conf->mddev->thread); in raid5_release_stripe()
415 if (atomic_dec_and_lock_irqsave(&sh->count, &conf->device_lock, flags)) { in raid5_release_stripe()
418 do_release_stripe(conf, sh, &list); in raid5_release_stripe()
419 spin_unlock_irqrestore(&conf->device_lock, flags); in raid5_release_stripe()
420 release_inactive_stripe_list(conf, &list, hash); in raid5_release_stripe()
432 static inline void insert_hash(struct r5conf *conf, struct stripe_head *sh) in insert_hash() argument
434 struct hlist_head *hp = stripe_hash(conf, sh->sector); in insert_hash()
443 static struct stripe_head *get_free_stripe(struct r5conf *conf, int hash) in get_free_stripe() argument
448 if (list_empty(conf->inactive_list + hash)) in get_free_stripe()
450 first = (conf->inactive_list + hash)->next; in get_free_stripe()
454 atomic_inc(&conf->active_stripes); in get_free_stripe()
456 if (list_empty(conf->inactive_list + hash)) in get_free_stripe()
457 atomic_inc(&conf->empty_inactive_list_nr); in get_free_stripe()
501 init_stripe_shared_pages(struct stripe_head *sh, struct r5conf *conf, int disks) in init_stripe_shared_pages() argument
509 cnt = PAGE_SIZE / conf->stripe_size; in init_stripe_shared_pages()
573 static void stripe_set_idx(sector_t stripe, struct r5conf *conf, int previous,
578 struct r5conf *conf = sh->raid_conf; in init_stripe() local
589 seq = read_seqcount_begin(&conf->gen_lock); in init_stripe()
590 sh->generation = conf->generation - previous; in init_stripe()
591 sh->disks = previous ? conf->previous_raid_disks : conf->raid_disks; in init_stripe()
593 stripe_set_idx(sector, conf, previous, sh); in init_stripe()
610 if (read_seqcount_retry(&conf->gen_lock, seq)) in init_stripe()
613 insert_hash(conf, sh); in init_stripe()
618 static struct stripe_head *__find_stripe(struct r5conf *conf, sector_t sector, in __find_stripe() argument
624 hlist_for_each_entry(sh, stripe_hash(conf, sector), hash) in __find_stripe()
631 static struct stripe_head *find_get_stripe(struct r5conf *conf, in find_get_stripe() argument
637 sh = __find_stripe(conf, sector, generation); in find_get_stripe()
650 spin_lock(&conf->device_lock); in find_get_stripe()
653 atomic_inc(&conf->active_stripes); in find_get_stripe()
657 if (!list_empty(conf->inactive_list + hash)) in find_get_stripe()
660 if (list_empty(conf->inactive_list + hash) && in find_get_stripe()
662 atomic_inc(&conf->empty_inactive_list_nr); in find_get_stripe()
669 spin_unlock(&conf->device_lock); in find_get_stripe()
691 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 = READ_ONCE(conf->disks[i].rdev); in raid5_calc_degraded()
701 rdev = READ_ONCE(conf->disks[i].replacement); in raid5_calc_degraded()
716 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()
722 for (i = 0; i < conf->raid_disks; i++) { in raid5_calc_degraded()
723 struct md_rdev *rdev = READ_ONCE(conf->disks[i].rdev); in raid5_calc_degraded()
726 rdev = READ_ONCE(conf->disks[i].replacement); in raid5_calc_degraded()
737 if (conf->raid_disks <= conf->previous_raid_disks) in raid5_calc_degraded()
745 static bool has_failed(struct r5conf *conf) in has_failed() argument
747 int degraded = conf->mddev->degraded; in has_failed()
749 if (test_bit(MD_BROKEN, &conf->mddev->flags)) in has_failed()
752 if (conf->mddev->reshape_position != MaxSector) in has_failed()
753 degraded = raid5_calc_degraded(conf); in has_failed()
755 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()
913 static void stripe_add_to_batch_list(struct r5conf *conf, in stripe_add_to_batch_list() argument
923 if (!sector_div(tmp_sec, conf->chunk_sectors)) in stripe_add_to_batch_list()
925 head_sector = sh->sector - RAID5_STRIPE_SECTORS(conf); in stripe_add_to_batch_list()
931 hash = stripe_hash_locks_hash(conf, head_sector); in stripe_add_to_batch_list()
932 spin_lock_irq(conf->hash_locks + hash); in stripe_add_to_batch_list()
933 head = find_get_stripe(conf, head_sector, conf->generation, in stripe_add_to_batch_list()
935 spin_unlock_irq(conf->hash_locks + hash); in stripe_add_to_batch_list()
988 if (atomic_dec_return(&conf->preread_active_stripes) in stripe_add_to_batch_list()
990 md_wakeup_thread(conf->mddev->thread); in stripe_add_to_batch_list()
1011 static int use_new_offset(struct r5conf *conf, struct stripe_head *sh) in use_new_offset() argument
1013 sector_t progress = conf->reshape_progress; in use_new_offset()
1021 if (sh->generation == conf->generation - 1) in use_new_offset()
1051 static void dispatch_defer_bios(struct r5conf *conf, int target, in dispatch_defer_bios() argument
1058 if (conf->pending_data_cnt == 0) in dispatch_defer_bios()
1061 list_sort(NULL, &conf->pending_list, cmp_stripe); in dispatch_defer_bios()
1063 first = conf->pending_list.next; in dispatch_defer_bios()
1066 if (conf->next_pending_data) in dispatch_defer_bios()
1067 list_move_tail(&conf->pending_list, in dispatch_defer_bios()
1068 &conf->next_pending_data->sibling); in dispatch_defer_bios()
1070 while (!list_empty(&conf->pending_list)) { in dispatch_defer_bios()
1071 data = list_first_entry(&conf->pending_list, in dispatch_defer_bios()
1078 list_move(&data->sibling, &conf->free_list); in dispatch_defer_bios()
1083 conf->pending_data_cnt -= cnt; in dispatch_defer_bios()
1084 BUG_ON(conf->pending_data_cnt < 0 || cnt < target); in dispatch_defer_bios()
1086 if (next != &conf->pending_list) in dispatch_defer_bios()
1087 conf->next_pending_data = list_entry(next, in dispatch_defer_bios()
1090 conf->next_pending_data = NULL; in dispatch_defer_bios()
1092 if (first != &conf->pending_list) in dispatch_defer_bios()
1093 list_move_tail(&conf->pending_list, first); in dispatch_defer_bios()
1096 static void flush_deferred_bios(struct r5conf *conf) in flush_deferred_bios() argument
1100 if (conf->pending_data_cnt == 0) in flush_deferred_bios()
1103 spin_lock(&conf->pending_bios_lock); in flush_deferred_bios()
1104 dispatch_defer_bios(conf, conf->pending_data_cnt, &tmp); in flush_deferred_bios()
1105 BUG_ON(conf->pending_data_cnt != 0); in flush_deferred_bios()
1106 spin_unlock(&conf->pending_bios_lock); in flush_deferred_bios()
1111 static void defer_issue_bios(struct r5conf *conf, sector_t sector, in defer_issue_bios() argument
1117 spin_lock(&conf->pending_bios_lock); in defer_issue_bios()
1118 ent = list_first_entry(&conf->free_list, struct r5pending_data, in defer_issue_bios()
1120 list_move_tail(&ent->sibling, &conf->pending_list); in defer_issue_bios()
1124 conf->pending_data_cnt++; in defer_issue_bios()
1125 if (conf->pending_data_cnt >= PENDING_IO_MAX) in defer_issue_bios()
1126 dispatch_defer_bios(conf, PENDING_IO_ONE_FLUSH, &tmp); in defer_issue_bios()
1128 spin_unlock(&conf->pending_bios_lock); in defer_issue_bios()
1140 struct r5conf *conf = sh->raid_conf; in ops_run_io() local
1152 should_defer = conf->batch_bio_dispatch && conf->group_cnt; in ops_run_io()
1184 rdev = conf->disks[i].rdev; in ops_run_io()
1185 rrdev = conf->disks[i].replacement; in ops_run_io()
1214 RAID5_STRIPE_SECTORS(conf)); in ops_run_io()
1220 if (!conf->mddev->external && in ops_run_io()
1221 conf->mddev->sb_flags) { in ops_run_io()
1226 md_check_recovery(conf->mddev); in ops_run_io()
1234 md_wait_for_blocked_rdev(rdev, conf->mddev); in ops_run_io()
1237 rdev_dec_pending(rdev, conf->mddev); in ops_run_io()
1257 if (use_new_offset(conf, sh)) in ops_run_io()
1280 bi->bi_io_vec[0].bv_len = RAID5_STRIPE_SIZE(conf); in ops_run_io()
1282 bi->bi_iter.bi_size = RAID5_STRIPE_SIZE(conf); in ops_run_io()
1292 mddev_trace_remap(conf->mddev, bi, sh->dev[i].sector); in ops_run_io()
1313 if (use_new_offset(conf, sh)) in ops_run_io()
1323 rbi->bi_io_vec[0].bv_len = RAID5_STRIPE_SIZE(conf); in ops_run_io()
1325 rbi->bi_iter.bi_size = RAID5_STRIPE_SIZE(conf); in ops_run_io()
1332 mddev_trace_remap(conf->mddev, rbi, sh->dev[i].sector); in ops_run_io()
1354 defer_issue_bios(conf, head_sh->sector, &pending_bios); in ops_run_io()
1368 struct r5conf *conf = sh->raid_conf; in async_copy_data() local
1390 if (len > 0 && page_offset + len > RAID5_STRIPE_SIZE(conf)) in async_copy_data()
1391 clen = RAID5_STRIPE_SIZE(conf) - page_offset; in async_copy_data()
1399 if (conf->skip_copy && in async_copy_data()
1401 clen == RAID5_STRIPE_SIZE(conf) && in async_copy_data()
1426 struct r5conf *conf = sh->raid_conf; in ops_complete_biofill() local
1447 dev->sector + RAID5_STRIPE_SECTORS(conf)) { in ops_complete_biofill()
1448 rbi2 = r5_next_bio(conf, rbi, dev->sector); in ops_complete_biofill()
1465 struct r5conf *conf = sh->raid_conf; in ops_run_biofill() local
1480 dev->sector + RAID5_STRIPE_SECTORS(conf)) { in ops_run_biofill()
1484 rbi = r5_next_bio(conf, rbi, dev->sector); in ops_run_biofill()
1910 struct r5conf *conf = sh->raid_conf; in ops_run_biodrain() local
1943 dev->sector + RAID5_STRIPE_SECTORS(conf)) { in ops_run_biodrain()
1954 r5c_is_writeback(conf->log)); in ops_run_biodrain()
1956 !r5c_is_writeback(conf->log)) { in ops_run_biodrain()
1962 wbi = r5_next_bio(conf, wbi, dev->sector); in ops_run_biodrain()
2267 struct r5conf *conf = sh->raid_conf; in raid_run_ops() local
2268 int level = conf->level; in raid_run_ops()
2271 local_lock(&conf->percpu->lock); in raid_run_ops()
2272 percpu = this_cpu_ptr(conf->percpu); in raid_run_ops()
2332 local_unlock(&conf->percpu->lock); in raid_run_ops()
2346 int disks, struct r5conf *conf) in alloc_stripe() argument
2359 sh->raid_conf = conf; in alloc_stripe()
2362 if (raid5_has_ppl(conf)) { in alloc_stripe()
2370 if (init_stripe_shared_pages(sh, conf, disks)) { in alloc_stripe()
2378 static int grow_one_stripe(struct r5conf *conf, gfp_t gfp) in grow_one_stripe() argument
2382 sh = alloc_stripe(conf->slab_cache, gfp, conf->pool_size, conf); in grow_one_stripe()
2388 free_stripe(conf->slab_cache, sh); in grow_one_stripe()
2392 conf->max_nr_stripes % NR_STRIPE_HASH_LOCKS; in grow_one_stripe()
2394 atomic_inc(&conf->active_stripes); in grow_one_stripe()
2397 WRITE_ONCE(conf->max_nr_stripes, conf->max_nr_stripes + 1); in grow_one_stripe()
2401 static int grow_stripes(struct r5conf *conf, int num) in grow_stripes() argument
2404 size_t namelen = sizeof(conf->cache_name[0]); in grow_stripes()
2405 int devs = max(conf->raid_disks, conf->previous_raid_disks); in grow_stripes()
2407 if (mddev_is_dm(conf->mddev)) in grow_stripes()
2408 snprintf(conf->cache_name[0], namelen, in grow_stripes()
2409 "raid%d-%p", conf->level, conf->mddev); in grow_stripes()
2411 snprintf(conf->cache_name[0], namelen, in grow_stripes()
2412 "raid%d-%s", conf->level, mdname(conf->mddev)); in grow_stripes()
2413 snprintf(conf->cache_name[1], namelen, "%.27s-alt", conf->cache_name[0]); in grow_stripes()
2415 conf->active_name = 0; in grow_stripes()
2416 sc = kmem_cache_create(conf->cache_name[conf->active_name], in grow_stripes()
2421 conf->slab_cache = sc; in grow_stripes()
2422 conf->pool_size = devs; in grow_stripes()
2424 if (!grow_one_stripe(conf, GFP_KERNEL)) in grow_stripes()
2471 static int resize_chunks(struct r5conf *conf, int new_disks, int new_sectors) in resize_chunks() argument
2477 if (conf->scribble_disks >= new_disks && in resize_chunks()
2478 conf->scribble_sectors >= new_sectors) in resize_chunks()
2481 raid5_quiesce(conf->mddev, true); in resize_chunks()
2487 percpu = per_cpu_ptr(conf->percpu, cpu); in resize_chunks()
2489 new_sectors / RAID5_STRIPE_SECTORS(conf)); in resize_chunks()
2495 raid5_quiesce(conf->mddev, false); in resize_chunks()
2498 conf->scribble_disks = new_disks; in resize_chunks()
2499 conf->scribble_sectors = new_sectors; in resize_chunks()
2504 static int resize_stripes(struct r5conf *conf, int newsize) in resize_stripes() argument
2537 md_allow_write(conf->mddev); in resize_stripes()
2540 sc = kmem_cache_create(conf->cache_name[1-conf->active_name], in resize_stripes()
2547 mutex_lock(&conf->cache_size_mutex); in resize_stripes()
2549 for (i = conf->max_nr_stripes; i; i--) { in resize_stripes()
2550 nsh = alloc_stripe(sc, GFP_KERNEL, newsize, conf); in resize_stripes()
2564 mutex_unlock(&conf->cache_size_mutex); in resize_stripes()
2574 lock_device_hash_lock(conf, hash); in resize_stripes()
2575 wait_event_cmd(conf->wait_for_stripe, in resize_stripes()
2576 !list_empty(conf->inactive_list + hash), in resize_stripes()
2577 unlock_device_hash_lock(conf, hash), in resize_stripes()
2578 lock_device_hash_lock(conf, hash)); in resize_stripes()
2579 osh = get_free_stripe(conf, hash); in resize_stripes()
2580 unlock_device_hash_lock(conf, hash); in resize_stripes()
2588 for(i=0; i<conf->pool_size; i++) { in resize_stripes()
2594 free_stripe(conf->slab_cache, osh); in resize_stripes()
2596 if (cnt >= conf->max_nr_stripes / NR_STRIPE_HASH_LOCKS + in resize_stripes()
2597 !!((conf->max_nr_stripes % NR_STRIPE_HASH_LOCKS) > hash)) { in resize_stripes()
2602 kmem_cache_destroy(conf->slab_cache); in resize_stripes()
2611 for (i = 0; i < conf->pool_size; i++) in resize_stripes()
2612 ndisks[i] = conf->disks[i]; in resize_stripes()
2614 for (i = conf->pool_size; i < newsize; i++) { in resize_stripes()
2621 for (i = conf->pool_size; i < newsize; i++) in resize_stripes()
2626 kfree(conf->disks); in resize_stripes()
2627 conf->disks = ndisks; in resize_stripes()
2632 conf->slab_cache = sc; in resize_stripes()
2633 conf->active_name = 1-conf->active_name; in resize_stripes()
2649 for (i = conf->raid_disks; i < newsize; i++) { in resize_stripes()
2657 for (i=conf->raid_disks; i < newsize; i++) in resize_stripes()
2672 conf->pool_size = newsize; in resize_stripes()
2673 mutex_unlock(&conf->cache_size_mutex); in resize_stripes()
2678 static int drop_one_stripe(struct r5conf *conf) in drop_one_stripe() argument
2681 int hash = (conf->max_nr_stripes - 1) & STRIPE_HASH_LOCKS_MASK; in drop_one_stripe()
2683 spin_lock_irq(conf->hash_locks + hash); in drop_one_stripe()
2684 sh = get_free_stripe(conf, hash); in drop_one_stripe()
2685 spin_unlock_irq(conf->hash_locks + hash); in drop_one_stripe()
2690 free_stripe(conf->slab_cache, sh); in drop_one_stripe()
2691 atomic_dec(&conf->active_stripes); in drop_one_stripe()
2692 WRITE_ONCE(conf->max_nr_stripes, conf->max_nr_stripes - 1); in drop_one_stripe()
2696 static void shrink_stripes(struct r5conf *conf) in shrink_stripes() argument
2698 while (conf->max_nr_stripes && in shrink_stripes()
2699 drop_one_stripe(conf)) in shrink_stripes()
2702 kmem_cache_destroy(conf->slab_cache); in shrink_stripes()
2703 conf->slab_cache = NULL; in shrink_stripes()
2709 struct r5conf *conf = sh->raid_conf; in raid5_end_read_request() local
2731 rdev = conf->disks[i].replacement; in raid5_end_read_request()
2733 rdev = conf->disks[i].rdev; in raid5_end_read_request()
2735 if (use_new_offset(conf, sh)) in raid5_end_read_request()
2748 mdname(conf->mddev), RAID5_STRIPE_SECTORS(conf), in raid5_end_read_request()
2751 atomic_add(RAID5_STRIPE_SECTORS(conf), &rdev->corrected_errors); in raid5_end_read_request()
2776 mdname(conf->mddev), in raid5_end_read_request()
2779 else if (conf->mddev->degraded >= conf->max_degraded) { in raid5_end_read_request()
2783 mdname(conf->mddev), in raid5_end_read_request()
2791 mdname(conf->mddev), in raid5_end_read_request()
2795 > conf->max_nr_stripes) { in raid5_end_read_request()
2798 mdname(conf->mddev), in raid5_end_read_request()
2800 conf->max_nr_stripes); in raid5_end_read_request()
2802 mdname(conf->mddev), rdev->bdev); in raid5_end_read_request()
2823 rdev, sh->sector, RAID5_STRIPE_SECTORS(conf), 0))) in raid5_end_read_request()
2824 md_error(conf->mddev, rdev); in raid5_end_read_request()
2827 rdev_dec_pending(rdev, conf->mddev); in raid5_end_read_request()
2837 struct r5conf *conf = sh->raid_conf; in raid5_end_write_request() local
2844 rdev = conf->disks[i].rdev; in raid5_end_write_request()
2848 rdev = conf->disks[i].replacement; in raid5_end_write_request()
2856 rdev = conf->disks[i].rdev; in raid5_end_write_request()
2870 md_error(conf->mddev, rdev); in raid5_end_write_request()
2872 RAID5_STRIPE_SECTORS(conf))) in raid5_end_write_request()
2882 RAID5_STRIPE_SECTORS(conf))) { in raid5_end_write_request()
2892 rdev_dec_pending(rdev, conf->mddev); in raid5_end_write_request()
2909 struct r5conf *conf = mddev->private; in raid5_error() local
2916 spin_lock_irqsave(&conf->device_lock, flags); in raid5_error()
2919 mddev->degraded = raid5_calc_degraded(conf); in raid5_error()
2921 if (has_failed(conf)) { in raid5_error()
2922 set_bit(MD_BROKEN, &conf->mddev->flags); in raid5_error()
2923 conf->recovery_disabled = mddev->recovery_disabled; in raid5_error()
2926 mdname(mddev), mddev->degraded, conf->raid_disks); in raid5_error()
2929 mdname(mddev), conf->raid_disks - mddev->degraded); in raid5_error()
2932 spin_unlock_irqrestore(&conf->device_lock, flags); in raid5_error()
2945 sector_t raid5_compute_sector(struct r5conf *conf, sector_t r_sector, in raid5_compute_sector() argument
2955 int algorithm = previous ? conf->prev_algo in raid5_compute_sector()
2956 : conf->algorithm; in raid5_compute_sector()
2957 int sectors_per_chunk = previous ? conf->prev_chunk_sectors in raid5_compute_sector()
2958 : conf->chunk_sectors; in raid5_compute_sector()
2959 int raid_disks = previous ? conf->previous_raid_disks in raid5_compute_sector()
2960 : conf->raid_disks; in raid5_compute_sector()
2961 int data_disks = raid_disks - conf->max_degraded; in raid5_compute_sector()
2981 switch(conf->level) { in raid5_compute_sector()
3149 struct r5conf *conf = sh->raid_conf; in raid5_compute_blocknr() local
3151 int data_disks = raid_disks - conf->max_degraded; in raid5_compute_blocknr()
3153 int sectors_per_chunk = previous ? conf->prev_chunk_sectors in raid5_compute_blocknr()
3154 : conf->chunk_sectors; in raid5_compute_blocknr()
3155 int algorithm = previous ? conf->prev_algo in raid5_compute_blocknr()
3156 : conf->algorithm; in raid5_compute_blocknr()
3169 switch(conf->level) { in raid5_compute_blocknr()
3256 check = raid5_compute_sector(conf, r_sector, in raid5_compute_blocknr()
3261 mdname(conf->mddev)); in raid5_compute_blocknr()
3305 static inline bool delay_towrite(struct r5conf *conf, in delay_towrite() argument
3314 if (test_bit(R5C_LOG_CRITICAL, &conf->cache_state) && in delay_towrite()
3328 struct r5conf *conf = sh->raid_conf; in schedule_reconstruction() local
3329 int level = conf->level; in schedule_reconstruction()
3343 if (dev->towrite && !delay_towrite(conf, dev, s)) { in schedule_reconstruction()
3369 if (s->locked + conf->max_degraded == disks) in schedule_reconstruction()
3371 atomic_inc(&conf->pending_full_writes); in schedule_reconstruction()
3435 struct r5conf *conf = sh->raid_conf; in stripe_bio_overlaps() local
3459 if (forwrite && raid5_has_ppl(conf)) { in stripe_bio_overlaps()
3485 if (first + conf->chunk_sectors * (count - 1) != last) in stripe_bio_overlaps()
3495 struct r5conf *conf = sh->raid_conf; in __add_stripe_bio() local
3518 md_write_inc(conf->mddev, bi); in __add_stripe_bio()
3524 sector < sh->dev[dd_idx].sector + RAID5_STRIPE_SECTORS(conf) && in __add_stripe_bio()
3526 bi = r5_next_bio(conf, bi, sh->dev[dd_idx].sector)) { in __add_stripe_bio()
3530 if (sector >= sh->dev[dd_idx].sector + RAID5_STRIPE_SECTORS(conf)) in __add_stripe_bio()
3539 if (conf->mddev->bitmap && firstwrite && !sh->batch_head) { in __add_stripe_bio()
3540 sh->bm_seq = conf->seq_flush+1; in __add_stripe_bio()
3566 static void end_reshape(struct r5conf *conf);
3568 static void stripe_set_idx(sector_t stripe, struct r5conf *conf, int previous, in stripe_set_idx() argument
3572 previous ? conf->prev_chunk_sectors : conf->chunk_sectors; in stripe_set_idx()
3575 int disks = previous ? conf->previous_raid_disks : conf->raid_disks; in stripe_set_idx()
3577 raid5_compute_sector(conf, in stripe_set_idx()
3578 stripe * (disks - conf->max_degraded) in stripe_set_idx()
3585 handle_failed_stripe(struct r5conf *conf, struct stripe_head *sh, in handle_failed_stripe() argument
3594 struct md_rdev *rdev = conf->disks[i].rdev; in handle_failed_stripe()
3605 RAID5_STRIPE_SECTORS(conf), 0)) in handle_failed_stripe()
3606 md_error(conf->mddev, rdev); in handle_failed_stripe()
3607 rdev_dec_pending(rdev, conf->mddev); in handle_failed_stripe()
3623 sh->dev[i].sector + RAID5_STRIPE_SECTORS(conf)) { in handle_failed_stripe()
3624 struct bio *nextbi = r5_next_bio(conf, bi, sh->dev[i].sector); in handle_failed_stripe()
3626 md_write_end(conf->mddev); in handle_failed_stripe()
3639 sh->dev[i].sector + RAID5_STRIPE_SECTORS(conf)) { in handle_failed_stripe()
3640 struct bio *bi2 = r5_next_bio(conf, bi, sh->dev[i].sector); in handle_failed_stripe()
3642 md_write_end(conf->mddev); in handle_failed_stripe()
3651 s->failed > conf->max_degraded && in handle_failed_stripe()
3663 sh->dev[i].sector + RAID5_STRIPE_SECTORS(conf)) { in handle_failed_stripe()
3665 r5_next_bio(conf, bi, sh->dev[i].sector); in handle_failed_stripe()
3680 if (atomic_dec_and_test(&conf->pending_full_writes)) in handle_failed_stripe()
3681 md_wakeup_thread(conf->mddev->thread); in handle_failed_stripe()
3685 handle_failed_sync(struct r5conf *conf, struct stripe_head *sh, in handle_failed_sync() argument
3704 if (test_bit(MD_RECOVERY_RECOVER, &conf->mddev->recovery)) { in handle_failed_sync()
3708 for (i = 0; i < conf->raid_disks; i++) { in handle_failed_sync()
3709 struct md_rdev *rdev = conf->disks[i].rdev; in handle_failed_sync()
3715 RAID5_STRIPE_SECTORS(conf), 0)) in handle_failed_sync()
3717 rdev = conf->disks[i].replacement; in handle_failed_sync()
3723 RAID5_STRIPE_SECTORS(conf), 0)) in handle_failed_sync()
3727 conf->recovery_disabled = in handle_failed_sync()
3728 conf->mddev->recovery_disabled; in handle_failed_sync()
3730 md_done_sync(conf->mddev, RAID5_STRIPE_SECTORS(conf), !abort); in handle_failed_sync()
3982 static void handle_stripe_clean_event(struct r5conf *conf, in handle_stripe_clean_event() argument
4013 dev->sector + RAID5_STRIPE_SECTORS(conf)) { in handle_stripe_clean_event()
4014 wbi2 = r5_next_bio(conf, wbi, dev->sector); in handle_stripe_clean_event()
4015 md_write_end(conf->mddev); in handle_stripe_clean_event()
4055 spin_lock_irq(conf->hash_locks + hash); in handle_stripe_clean_event()
4057 spin_unlock_irq(conf->hash_locks + hash); in handle_stripe_clean_event()
4072 if (atomic_dec_and_test(&conf->pending_full_writes)) in handle_stripe_clean_event()
4073 md_wakeup_thread(conf->mddev->thread); in handle_stripe_clean_event()
4094 static int handle_stripe_dirtying(struct r5conf *conf, in handle_stripe_dirtying() argument
4100 sector_t recovery_cp = conf->mddev->recovery_cp; in handle_stripe_dirtying()
4109 if (conf->rmw_level == PARITY_DISABLE_RMW || in handle_stripe_dirtying()
4117 conf->rmw_level, (unsigned long long)recovery_cp, in handle_stripe_dirtying()
4122 if (((dev->towrite && !delay_towrite(conf, dev, s)) || in handle_stripe_dirtying()
4149 if ((rmw < rcw || (rmw == rcw && conf->rmw_level == PARITY_PREFER_RMW)) && rmw > 0) { in handle_stripe_dirtying()
4151 mddev_add_trace_msg(conf->mddev, "raid5 rmw %llu %d", in handle_stripe_dirtying()
4172 &conf->cache_state)) { in handle_stripe_dirtying()
4186 if (((dev->towrite && !delay_towrite(conf, dev, s)) || in handle_stripe_dirtying()
4205 if ((rcw < rmw || (rcw == rmw && conf->rmw_level != PARITY_PREFER_RMW)) && rcw > 0) { in handle_stripe_dirtying()
4230 if (rcw && !mddev_is_dm(conf->mddev)) in handle_stripe_dirtying()
4231 blk_add_trace_msg(conf->mddev->gendisk->queue, in handle_stripe_dirtying()
4258 static void handle_parity_checks5(struct r5conf *conf, struct stripe_head *sh, in handle_parity_checks5() argument
4319 atomic64_add(RAID5_STRIPE_SECTORS(conf), &conf->mddev->resync_mismatches); in handle_parity_checks5()
4320 if (test_bit(MD_RECOVERY_CHECK, &conf->mddev->recovery)) { in handle_parity_checks5()
4324 "%llu-%llu\n", mdname(conf->mddev), in handle_parity_checks5()
4327 RAID5_STRIPE_SECTORS(conf)); in handle_parity_checks5()
4350 static void handle_parity_checks6(struct r5conf *conf, struct stripe_head *sh, in handle_parity_checks6() argument
4446 mdname(conf->mddev), in handle_parity_checks6()
4483 atomic64_add(RAID5_STRIPE_SECTORS(conf), &conf->mddev->resync_mismatches); in handle_parity_checks6()
4484 if (test_bit(MD_RECOVERY_CHECK, &conf->mddev->recovery)) { in handle_parity_checks6()
4488 "%llu-%llu\n", mdname(conf->mddev), in handle_parity_checks6()
4491 RAID5_STRIPE_SECTORS(conf)); in handle_parity_checks6()
4526 static void handle_stripe_expansion(struct r5conf *conf, struct stripe_head *sh) in handle_stripe_expansion() argument
4543 sector_t s = raid5_compute_sector(conf, bn, 0, in handle_stripe_expansion()
4545 sh2 = raid5_get_active_stripe(conf, NULL, s, in handle_stripe_expansion()
4564 sh->dev[i].offset, RAID5_STRIPE_SIZE(conf), in handle_stripe_expansion()
4569 for (j = 0; j < conf->raid_disks; j++) in handle_stripe_expansion()
4574 if (j == conf->raid_disks) { in handle_stripe_expansion()
4601 struct r5conf *conf = sh->raid_conf; in analyse_stripe() local
4613 s->log_failed = r5l_log_disk_error(conf); in analyse_stripe()
4658 rdev = conf->disks[i].replacement; in analyse_stripe()
4660 rdev->recovery_offset >= sh->sector + RAID5_STRIPE_SECTORS(conf) && in analyse_stripe()
4662 RAID5_STRIPE_SECTORS(conf))) in analyse_stripe()
4669 rdev = conf->disks[i].rdev; in analyse_stripe()
4676 RAID5_STRIPE_SECTORS(conf)); in analyse_stripe()
4701 else if (sh->sector + RAID5_STRIPE_SECTORS(conf) <= rdev->recovery_offset) in analyse_stripe()
4715 struct md_rdev *rdev2 = conf->disks[i].rdev; in analyse_stripe()
4728 struct md_rdev *rdev2 = conf->disks[i].rdev; in analyse_stripe()
4737 struct md_rdev *rdev2 = conf->disks[i].replacement; in analyse_stripe()
4759 rdev = conf->disks[i].replacement; in analyse_stripe()
4780 sh->sector >= conf->mddev->recovery_cp || in analyse_stripe()
4781 test_bit(MD_RECOVERY_REQUESTED, &(conf->mddev->recovery))) in analyse_stripe()
4884 struct r5conf *conf = sh->raid_conf; in handle_stripe() local
4941 test_bit(MD_SB_CHANGE_PENDING, &conf->mddev->sb_flags)) { in handle_stripe()
4953 rdev_dec_pending(s.blocked_rdev, conf->mddev); in handle_stripe()
4973 if (s.failed > conf->max_degraded || in handle_stripe()
4979 handle_failed_stripe(conf, sh, &s, disks); in handle_stripe()
4981 handle_failed_sync(conf, sh, &s); in handle_stripe()
5034 || conf->level < 6; in handle_stripe()
5045 handle_stripe_clean_event(conf, sh, disks); in handle_stripe()
5048 r5c_handle_cached_data_endio(conf, sh, disks); in handle_stripe()
5067 r5c_finish_stripe_write_out(conf, sh, &s); in handle_stripe()
5079 if (!r5c_is_writeback(conf->log)) { in handle_stripe()
5081 handle_stripe_dirtying(conf, sh, &s, disks); in handle_stripe()
5087 ret = r5c_try_caching_write(conf, sh, &s, in handle_stripe()
5100 ret = handle_stripe_dirtying(conf, sh, &s, in handle_stripe()
5117 if (conf->level == 6) in handle_stripe()
5118 handle_parity_checks6(conf, sh, &s, disks); in handle_stripe()
5120 handle_parity_checks5(conf, sh, &s, disks); in handle_stripe()
5127 for (i = 0; i < conf->raid_disks; i++) in handle_stripe()
5141 md_done_sync(conf->mddev, RAID5_STRIPE_SECTORS(conf), 1); in handle_stripe()
5150 if (s.failed <= conf->max_degraded && !conf->mddev->ro) in handle_stripe()
5171 = raid5_get_active_stripe(conf, NULL, sh->sector, in handle_stripe()
5182 atomic_inc(&conf->preread_active_stripes); in handle_stripe()
5191 for (i = conf->raid_disks; i--; ) { in handle_stripe()
5201 sh->disks = conf->raid_disks; in handle_stripe()
5202 stripe_set_idx(sh->sector, conf, 0, sh); in handle_stripe()
5206 atomic_dec(&conf->reshape_stripes); in handle_stripe()
5207 wake_up(&conf->wait_for_reshape); in handle_stripe()
5208 md_done_sync(conf->mddev, RAID5_STRIPE_SECTORS(conf), 1); in handle_stripe()
5213 handle_stripe_expansion(conf, sh); in handle_stripe()
5218 if (conf->mddev->external) in handle_stripe()
5220 conf->mddev); in handle_stripe()
5227 conf->mddev); in handle_stripe()
5236 rdev = conf->disks[i].rdev; in handle_stripe()
5238 RAID5_STRIPE_SECTORS(conf), 0)) in handle_stripe()
5239 md_error(conf->mddev, rdev); in handle_stripe()
5240 rdev_dec_pending(rdev, conf->mddev); in handle_stripe()
5243 rdev = conf->disks[i].rdev; in handle_stripe()
5245 RAID5_STRIPE_SECTORS(conf), 0); in handle_stripe()
5246 rdev_dec_pending(rdev, conf->mddev); in handle_stripe()
5249 rdev = conf->disks[i].replacement; in handle_stripe()
5252 rdev = conf->disks[i].rdev; in handle_stripe()
5254 RAID5_STRIPE_SECTORS(conf), 0); in handle_stripe()
5255 rdev_dec_pending(rdev, conf->mddev); in handle_stripe()
5269 atomic_dec(&conf->preread_active_stripes); in handle_stripe()
5270 if (atomic_read(&conf->preread_active_stripes) < in handle_stripe()
5272 md_wakeup_thread(conf->mddev->thread); in handle_stripe()
5278 static void raid5_activate_delayed(struct r5conf *conf) in raid5_activate_delayed() argument
5279 __must_hold(&conf->device_lock) in raid5_activate_delayed()
5281 if (atomic_read(&conf->preread_active_stripes) < IO_THRESHOLD) { in raid5_activate_delayed()
5282 while (!list_empty(&conf->delayed_list)) { in raid5_activate_delayed()
5283 struct list_head *l = conf->delayed_list.next; in raid5_activate_delayed()
5289 atomic_inc(&conf->preread_active_stripes); in raid5_activate_delayed()
5290 list_add_tail(&sh->lru, &conf->hold_list); in raid5_activate_delayed()
5296 static void activate_bit_delay(struct r5conf *conf, in activate_bit_delay() argument
5298 __must_hold(&conf->device_lock) in activate_bit_delay()
5301 list_add(&head, &conf->bitmap_list); in activate_bit_delay()
5302 list_del_init(&conf->bitmap_list); in activate_bit_delay()
5309 __release_stripe(conf, sh, &temp_inactive_list[hash]); in activate_bit_delay()
5315 struct r5conf *conf = mddev->private; in in_chunk_boundary() local
5320 chunk_sectors = min(conf->chunk_sectors, conf->prev_chunk_sectors); in in_chunk_boundary()
5329 static void add_bio_to_retry(struct bio *bi,struct r5conf *conf) in add_bio_to_retry() argument
5333 spin_lock_irqsave(&conf->device_lock, flags); in add_bio_to_retry()
5335 bi->bi_next = conf->retry_read_aligned_list; in add_bio_to_retry()
5336 conf->retry_read_aligned_list = bi; in add_bio_to_retry()
5338 spin_unlock_irqrestore(&conf->device_lock, flags); in add_bio_to_retry()
5339 md_wakeup_thread(conf->mddev->thread); in add_bio_to_retry()
5342 static struct bio *remove_bio_from_retry(struct r5conf *conf, in remove_bio_from_retry() argument
5347 bi = conf->retry_read_aligned; in remove_bio_from_retry()
5349 *offset = conf->retry_read_offset; in remove_bio_from_retry()
5350 conf->retry_read_aligned = NULL; in remove_bio_from_retry()
5353 bi = conf->retry_read_aligned_list; in remove_bio_from_retry()
5355 conf->retry_read_aligned_list = bi->bi_next; in remove_bio_from_retry()
5374 struct r5conf *conf = mddev->private; in raid5_align_endio() local
5379 rdev_dec_pending(rdev, conf->mddev); in raid5_align_endio()
5383 if (atomic_dec_and_test(&conf->active_aligned_reads)) in raid5_align_endio()
5384 wake_up(&conf->wait_for_quiescent); in raid5_align_endio()
5390 add_bio_to_retry(raid_bi, conf); in raid5_align_endio()
5395 struct r5conf *conf = mddev->private; in raid5_read_one_chunk() local
5407 sector = raid5_compute_sector(conf, raid_bio->bi_iter.bi_sector, 0, in raid5_read_one_chunk()
5411 if (r5c_big_stripe_cached(conf, sector)) in raid5_read_one_chunk()
5414 rdev = conf->disks[dd_idx].replacement; in raid5_read_one_chunk()
5417 rdev = conf->disks[dd_idx].rdev; in raid5_read_one_chunk()
5446 if (conf->quiesce == 0) { in raid5_read_one_chunk()
5447 atomic_inc(&conf->active_aligned_reads); in raid5_read_one_chunk()
5451 if (!did_inc || smp_load_acquire(&conf->quiesce) != 0) { in raid5_read_one_chunk()
5455 if (did_inc && atomic_dec_and_test(&conf->active_aligned_reads)) in raid5_read_one_chunk()
5456 wake_up(&conf->wait_for_quiescent); in raid5_read_one_chunk()
5457 spin_lock_irq(&conf->device_lock); in raid5_read_one_chunk()
5458 wait_event_lock_irq(conf->wait_for_quiescent, conf->quiesce == 0, in raid5_read_one_chunk()
5459 conf->device_lock); in raid5_read_one_chunk()
5460 atomic_inc(&conf->active_aligned_reads); in raid5_read_one_chunk()
5461 spin_unlock_irq(&conf->device_lock); in raid5_read_one_chunk()
5477 struct r5conf *conf = mddev->private; in chunk_aligned_read() local
5478 split = bio_split(raid_bio, sectors, GFP_NOIO, &conf->bio_split); in chunk_aligned_read()
5500 static struct stripe_head *__get_priority_stripe(struct r5conf *conf, int group) in __get_priority_stripe() argument
5501 __must_hold(&conf->device_lock) in __get_priority_stripe()
5506 bool second_try = !r5c_is_writeback(conf->log) && in __get_priority_stripe()
5507 !r5l_log_disk_error(conf); in __get_priority_stripe()
5508 bool try_loprio = test_bit(R5C_LOG_TIGHT, &conf->cache_state) || in __get_priority_stripe()
5509 r5l_log_disk_error(conf); in __get_priority_stripe()
5514 if (conf->worker_cnt_per_group == 0) { in __get_priority_stripe()
5515 handle_list = try_loprio ? &conf->loprio_list : in __get_priority_stripe()
5516 &conf->handle_list; in __get_priority_stripe()
5518 handle_list = try_loprio ? &conf->worker_groups[group].loprio_list : in __get_priority_stripe()
5519 &conf->worker_groups[group].handle_list; in __get_priority_stripe()
5520 wg = &conf->worker_groups[group]; in __get_priority_stripe()
5523 for (i = 0; i < conf->group_cnt; i++) { in __get_priority_stripe()
5524 handle_list = try_loprio ? &conf->worker_groups[i].loprio_list : in __get_priority_stripe()
5525 &conf->worker_groups[i].handle_list; in __get_priority_stripe()
5526 wg = &conf->worker_groups[i]; in __get_priority_stripe()
5535 list_empty(&conf->hold_list) ? "empty" : "busy", in __get_priority_stripe()
5536 atomic_read(&conf->pending_full_writes), conf->bypass_count); in __get_priority_stripe()
5541 if (list_empty(&conf->hold_list)) in __get_priority_stripe()
5542 conf->bypass_count = 0; in __get_priority_stripe()
5544 if (conf->hold_list.next == conf->last_hold) in __get_priority_stripe()
5545 conf->bypass_count++; in __get_priority_stripe()
5547 conf->last_hold = conf->hold_list.next; in __get_priority_stripe()
5548 conf->bypass_count -= conf->bypass_threshold; in __get_priority_stripe()
5549 if (conf->bypass_count < 0) in __get_priority_stripe()
5550 conf->bypass_count = 0; in __get_priority_stripe()
5553 } else if (!list_empty(&conf->hold_list) && in __get_priority_stripe()
5554 ((conf->bypass_threshold && in __get_priority_stripe()
5555 conf->bypass_count > conf->bypass_threshold) || in __get_priority_stripe()
5556 atomic_read(&conf->pending_full_writes) == 0)) { in __get_priority_stripe()
5558 list_for_each_entry(tmp, &conf->hold_list, lru) { in __get_priority_stripe()
5559 if (conf->worker_cnt_per_group == 0 || in __get_priority_stripe()
5569 conf->bypass_count -= conf->bypass_threshold; in __get_priority_stripe()
5570 if (conf->bypass_count < 0) in __get_priority_stripe()
5571 conf->bypass_count = 0; in __get_priority_stripe()
5605 struct r5conf *conf = mddev->private; in raid5_unplug() local
5610 spin_lock_irq(&conf->device_lock); in raid5_unplug()
5626 __release_stripe(conf, sh, &cb->temp_inactive_list[hash]); in raid5_unplug()
5629 spin_unlock_irq(&conf->device_lock); in raid5_unplug()
5631 release_inactive_stripe_list(conf, cb->temp_inactive_list, in raid5_unplug()
5668 struct r5conf *conf = mddev->private; in make_discard_request() local
5681 logical_sector = bi->bi_iter.bi_sector & ~((sector_t)RAID5_STRIPE_SECTORS(conf)-1); in make_discard_request()
5686 stripe_sectors = conf->chunk_sectors * in make_discard_request()
5687 (conf->raid_disks - conf->max_degraded); in make_discard_request()
5692 logical_sector *= conf->chunk_sectors; in make_discard_request()
5693 last_sector *= conf->chunk_sectors; in make_discard_request()
5696 logical_sector += RAID5_STRIPE_SECTORS(conf)) { in make_discard_request()
5700 sh = raid5_get_active_stripe(conf, NULL, logical_sector, 0); in make_discard_request()
5710 for (d = 0; d < conf->raid_disks; d++) { in make_discard_request()
5724 for (d = 0; d < conf->raid_disks; d++) { in make_discard_request()
5734 if (conf->mddev->bitmap) { in make_discard_request()
5735 sh->bm_seq = conf->seq_flush + 1; in make_discard_request()
5742 atomic_inc(&conf->preread_active_stripes); in make_discard_request()
5763 static bool stripe_ahead_of_reshape(struct mddev *mddev, struct r5conf *conf, in stripe_ahead_of_reshape() argument
5778 spin_lock_irq(&conf->device_lock); in stripe_ahead_of_reshape()
5781 conf->reshape_progress)) in stripe_ahead_of_reshape()
5785 spin_unlock_irq(&conf->device_lock); in stripe_ahead_of_reshape()
5790 static int add_all_stripe_bios(struct r5conf *conf, in add_all_stripe_bios() argument
5817 md_wakeup_thread(conf->mddev->thread); in add_all_stripe_bios()
5835 RAID5_STRIPE_SHIFT(conf), ctx->sectors_to_do); in add_all_stripe_bios()
5850 struct r5conf *conf, sector_t logical_sector) in get_reshape_loc() argument
5854 if (likely(conf->reshape_progress == MaxSector)) in get_reshape_loc()
5865 spin_lock_irq(&conf->device_lock); in get_reshape_loc()
5866 reshape_progress = conf->reshape_progress; in get_reshape_loc()
5867 reshape_safe = conf->reshape_safe; in get_reshape_loc()
5868 spin_unlock_irq(&conf->device_lock); in get_reshape_loc()
5881 struct r5conf *conf = mddev->private; in raid5_bitmap_sector() local
5890 sectors_per_chunk = conf->chunk_sectors * in raid5_bitmap_sector()
5891 (conf->raid_disks - conf->max_degraded); in raid5_bitmap_sector()
5895 start = raid5_compute_sector(conf, start, 0, &dd_idx, NULL); in raid5_bitmap_sector()
5896 end = raid5_compute_sector(conf, end, 0, &dd_idx, NULL); in raid5_bitmap_sector()
5902 loc = get_reshape_loc(mddev, conf, prev_start); in raid5_bitmap_sector()
5909 sectors_per_chunk = conf->prev_chunk_sectors * in raid5_bitmap_sector()
5910 (conf->previous_raid_disks - conf->max_degraded); in raid5_bitmap_sector()
5914 prev_start = raid5_compute_sector(conf, prev_start, 1, &dd_idx, NULL); in raid5_bitmap_sector()
5915 prev_end = raid5_compute_sector(conf, prev_end, 1, &dd_idx, NULL); in raid5_bitmap_sector()
5927 struct r5conf *conf, struct stripe_request_ctx *ctx, in make_stripe_request() argument
5938 seq = read_seqcount_begin(&conf->gen_lock); in make_stripe_request()
5939 loc = get_reshape_loc(mddev, conf, logical_sector); in make_stripe_request()
5947 new_sector = raid5_compute_sector(conf, logical_sector, previous, in make_stripe_request()
5956 sh = raid5_get_active_stripe(conf, ctx, new_sector, flags); in make_stripe_request()
5964 stripe_ahead_of_reshape(mddev, conf, sh)) { in make_stripe_request()
5977 if (read_seqcount_retry(&conf->gen_lock, seq)) { in make_stripe_request()
5989 if (!add_all_stripe_bios(conf, ctx, sh, bi, rw, previous)) { in make_stripe_request()
5995 stripe_add_to_batch_list(conf, sh, ctx->batch_last); in make_stripe_request()
6013 atomic_inc(&conf->preread_active_stripes); in make_stripe_request()
6033 static sector_t raid5_bio_lowest_chunk_sector(struct r5conf *conf, in raid5_bio_lowest_chunk_sector() argument
6036 int sectors_per_chunk = conf->chunk_sectors; in raid5_bio_lowest_chunk_sector()
6037 int raid_disks = conf->raid_disks; in raid5_bio_lowest_chunk_sector()
6041 sector_t r_sector = bi->bi_iter.bi_sector & ~((sector_t)RAID5_STRIPE_SECTORS(conf)-1); in raid5_bio_lowest_chunk_sector()
6045 sector = raid5_compute_sector(conf, r_sector, 0, &dd_idx, &sh); in raid5_bio_lowest_chunk_sector()
6065 struct r5conf *conf = mddev->private; in raid5_make_request() local
6073 int ret = log_handle_flush_request(conf, bi); in raid5_make_request()
6108 logical_sector = bi->bi_iter.bi_sector & ~((sector_t)RAID5_STRIPE_SECTORS(conf)-1); in raid5_make_request()
6114 RAID5_STRIPE_SECTORS(conf)); in raid5_make_request()
6122 get_reshape_loc(mddev, conf, logical_sector) == LOC_INSIDE_RESHAPE) { in raid5_make_request()
6137 if (likely(conf->reshape_progress == MaxSector)) { in raid5_make_request()
6138 logical_sector = raid5_bio_lowest_chunk_sector(conf, bi); in raid5_make_request()
6141 add_wait_queue(&conf->wait_for_reshape, &wait); in raid5_make_request()
6144 s = (logical_sector - ctx.first_sector) >> RAID5_STRIPE_SHIFT(conf); in raid5_make_request()
6147 res = make_stripe_request(mddev, conf, &ctx, logical_sector, in raid5_make_request()
6179 (s << RAID5_STRIPE_SHIFT(conf)); in raid5_make_request()
6182 remove_wait_queue(&conf->wait_for_reshape, &wait); in raid5_make_request()
6211 struct r5conf *conf = mddev->private; in reshape_request() local
6215 int raid_disks = conf->previous_raid_disks; in reshape_request()
6216 int data_disks = raid_disks - conf->max_degraded; in reshape_request()
6217 int new_data_disks = conf->raid_disks - conf->max_degraded; in reshape_request()
6229 conf->reshape_progress < raid5_size(mddev, 0, 0)) { in reshape_request()
6231 - conf->reshape_progress; in reshape_request()
6233 conf->reshape_progress == MaxSector) { in reshape_request()
6237 conf->reshape_progress > 0) in reshape_request()
6238 sector_nr = conf->reshape_progress; in reshape_request()
6254 reshape_sectors = max(conf->chunk_sectors, conf->prev_chunk_sectors); in reshape_request()
6262 writepos = conf->reshape_progress; in reshape_request()
6264 readpos = conf->reshape_progress; in reshape_request()
6266 safepos = conf->reshape_safe; in reshape_request()
6289 if (WARN_ON(conf->reshape_progress == 0)) in reshape_request()
6324 if (conf->min_offset_diff < 0) { in reshape_request()
6325 safepos += -conf->min_offset_diff; in reshape_request()
6326 readpos += -conf->min_offset_diff; in reshape_request()
6328 writepos += conf->min_offset_diff; in reshape_request()
6333 time_after(jiffies, conf->reshape_checkpoint + 10*HZ)) { in reshape_request()
6335 wait_event(conf->wait_for_reshape, in reshape_request()
6336 atomic_read(&conf->reshape_stripes)==0 in reshape_request()
6338 if (atomic_read(&conf->reshape_stripes) != 0) in reshape_request()
6340 mddev->reshape_position = conf->reshape_progress; in reshape_request()
6351 conf->reshape_checkpoint = jiffies; in reshape_request()
6358 spin_lock_irq(&conf->device_lock); in reshape_request()
6359 conf->reshape_safe = mddev->reshape_position; in reshape_request()
6360 spin_unlock_irq(&conf->device_lock); in reshape_request()
6361 wake_up(&conf->wait_for_reshape); in reshape_request()
6366 for (i = 0; i < reshape_sectors; i += RAID5_STRIPE_SECTORS(conf)) { in reshape_request()
6369 sh = raid5_get_active_stripe(conf, NULL, stripe_addr+i, in reshape_request()
6372 atomic_inc(&conf->reshape_stripes); in reshape_request()
6380 if (conf->level == 6 && in reshape_request()
6388 memset(page_address(sh->dev[j].page), 0, RAID5_STRIPE_SIZE(conf)); in reshape_request()
6398 spin_lock_irq(&conf->device_lock); in reshape_request()
6400 conf->reshape_progress -= reshape_sectors * new_data_disks; in reshape_request()
6402 conf->reshape_progress += reshape_sectors * new_data_disks; in reshape_request()
6403 spin_unlock_irq(&conf->device_lock); in reshape_request()
6410 raid5_compute_sector(conf, stripe_addr*(new_data_disks), in reshape_request()
6413 raid5_compute_sector(conf, ((stripe_addr+reshape_sectors) in reshape_request()
6419 sh = raid5_get_active_stripe(conf, NULL, first_sector, in reshape_request()
6424 first_sector += RAID5_STRIPE_SECTORS(conf); in reshape_request()
6444 wait_event(conf->wait_for_reshape, in reshape_request()
6445 atomic_read(&conf->reshape_stripes) == 0 in reshape_request()
6447 if (atomic_read(&conf->reshape_stripes) != 0) in reshape_request()
6449 mddev->reshape_position = conf->reshape_progress; in reshape_request()
6459 conf->reshape_checkpoint = jiffies; in reshape_request()
6467 spin_lock_irq(&conf->device_lock); in reshape_request()
6468 conf->reshape_safe = mddev->reshape_position; in reshape_request()
6469 spin_unlock_irq(&conf->device_lock); in reshape_request()
6470 wake_up(&conf->wait_for_reshape); in reshape_request()
6480 struct r5conf *conf = mddev->private; in raid5_sync_request() local
6490 end_reshape(conf); in raid5_sync_request()
6498 conf->fullsync = 0; in raid5_sync_request()
6505 wait_event(conf->wait_for_reshape, conf->quiesce != 2); in raid5_sync_request()
6520 if (mddev->degraded >= conf->max_degraded && in raid5_sync_request()
6527 !conf->fullsync && in raid5_sync_request()
6530 sync_blocks >= RAID5_STRIPE_SECTORS(conf)) { in raid5_sync_request()
6532 do_div(sync_blocks, RAID5_STRIPE_SECTORS(conf)); in raid5_sync_request()
6535 return sync_blocks * RAID5_STRIPE_SECTORS(conf); in raid5_sync_request()
6540 sh = raid5_get_active_stripe(conf, NULL, sector_nr, in raid5_sync_request()
6543 sh = raid5_get_active_stripe(conf, NULL, sector_nr, 0); in raid5_sync_request()
6553 for (i = 0; i < conf->raid_disks; i++) { in raid5_sync_request()
6554 struct md_rdev *rdev = conf->disks[i].rdev; in raid5_sync_request()
6568 return RAID5_STRIPE_SECTORS(conf); in raid5_sync_request()
6571 static int retry_aligned_read(struct r5conf *conf, struct bio *raid_bio, in retry_aligned_read() argument
6591 ~((sector_t)RAID5_STRIPE_SECTORS(conf)-1); in retry_aligned_read()
6592 sector = raid5_compute_sector(conf, logical_sector, in retry_aligned_read()
6597 logical_sector += RAID5_STRIPE_SECTORS(conf), in retry_aligned_read()
6598 sector += RAID5_STRIPE_SECTORS(conf), in retry_aligned_read()
6605 sh = raid5_get_active_stripe(conf, NULL, sector, in retry_aligned_read()
6609 conf->retry_read_aligned = raid_bio; in retry_aligned_read()
6610 conf->retry_read_offset = scnt; in retry_aligned_read()
6616 conf->retry_read_aligned = raid_bio; in retry_aligned_read()
6617 conf->retry_read_offset = scnt; in retry_aligned_read()
6629 if (atomic_dec_and_test(&conf->active_aligned_reads)) in retry_aligned_read()
6630 wake_up(&conf->wait_for_quiescent); in retry_aligned_read()
6634 static int handle_active_stripes(struct r5conf *conf, int group, in handle_active_stripes() argument
6637 __must_hold(&conf->device_lock) in handle_active_stripes()
6644 (sh = __get_priority_stripe(conf, group)) != NULL) in handle_active_stripes()
6652 spin_unlock_irq(&conf->device_lock); in handle_active_stripes()
6653 log_flush_stripe_to_raid(conf); in handle_active_stripes()
6654 spin_lock_irq(&conf->device_lock); in handle_active_stripes()
6659 spin_unlock_irq(&conf->device_lock); in handle_active_stripes()
6661 release_inactive_stripe_list(conf, temp_inactive_list, in handle_active_stripes()
6664 r5l_flush_stripe_to_raid(conf->log); in handle_active_stripes()
6666 spin_lock_irq(&conf->device_lock); in handle_active_stripes()
6672 log_write_stripe_run(conf); in handle_active_stripes()
6676 spin_lock_irq(&conf->device_lock); in handle_active_stripes()
6679 __release_stripe(conf, batch[i], &temp_inactive_list[hash]); in handle_active_stripes()
6688 struct r5conf *conf = group->conf; in raid5_do_work() local
6689 struct mddev *mddev = conf->mddev; in raid5_do_work()
6690 int group_id = group - conf->worker_groups; in raid5_do_work()
6698 spin_lock_irq(&conf->device_lock); in raid5_do_work()
6702 released = release_stripe_list(conf, worker->temp_inactive_list); in raid5_do_work()
6704 batch_size = handle_active_stripes(conf, group_id, worker, in raid5_do_work()
6712 conf->device_lock); in raid5_do_work()
6716 spin_unlock_irq(&conf->device_lock); in raid5_do_work()
6718 flush_deferred_bios(conf); in raid5_do_work()
6720 r5l_flush_stripe_to_raid(conf->log); in raid5_do_work()
6738 struct r5conf *conf = mddev->private; in raid5d() local
6748 spin_lock_irq(&conf->device_lock); in raid5d()
6757 released = release_stripe_list(conf, conf->temp_inactive_list); in raid5d()
6759 clear_bit(R5_DID_ALLOC, &conf->cache_state); in raid5d()
6762 !list_empty(&conf->bitmap_list)) { in raid5d()
6764 conf->seq_flush++; in raid5d()
6765 spin_unlock_irq(&conf->device_lock); in raid5d()
6767 spin_lock_irq(&conf->device_lock); in raid5d()
6768 conf->seq_write = conf->seq_flush; in raid5d()
6769 activate_bit_delay(conf, conf->temp_inactive_list); in raid5d()
6771 raid5_activate_delayed(conf); in raid5d()
6773 while ((bio = remove_bio_from_retry(conf, &offset))) { in raid5d()
6775 spin_unlock_irq(&conf->device_lock); in raid5d()
6776 ok = retry_aligned_read(conf, bio, offset); in raid5d()
6777 spin_lock_irq(&conf->device_lock); in raid5d()
6783 batch_size = handle_active_stripes(conf, ANY_GROUP, NULL, in raid5d()
6784 conf->temp_inactive_list); in raid5d()
6790 spin_unlock_irq(&conf->device_lock); in raid5d()
6792 spin_lock_irq(&conf->device_lock); in raid5d()
6797 spin_unlock_irq(&conf->device_lock); in raid5d()
6798 if (test_and_clear_bit(R5_ALLOC_MORE, &conf->cache_state) && in raid5d()
6799 mutex_trylock(&conf->cache_size_mutex)) { in raid5d()
6800 grow_one_stripe(conf, __GFP_NOWARN); in raid5d()
6804 set_bit(R5_DID_ALLOC, &conf->cache_state); in raid5d()
6805 mutex_unlock(&conf->cache_size_mutex); in raid5d()
6808 flush_deferred_bios(conf); in raid5d()
6810 r5l_flush_stripe_to_raid(conf->log); in raid5d()
6821 struct r5conf *conf; in raid5_show_stripe_cache_size() local
6824 conf = mddev->private; in raid5_show_stripe_cache_size()
6825 if (conf) in raid5_show_stripe_cache_size()
6826 ret = sprintf(page, "%d\n", conf->min_nr_stripes); in raid5_show_stripe_cache_size()
6835 struct r5conf *conf = mddev->private; in raid5_set_cache_size() local
6840 WRITE_ONCE(conf->min_nr_stripes, size); in raid5_set_cache_size()
6841 mutex_lock(&conf->cache_size_mutex); in raid5_set_cache_size()
6842 while (size < conf->max_nr_stripes && in raid5_set_cache_size()
6843 drop_one_stripe(conf)) in raid5_set_cache_size()
6845 mutex_unlock(&conf->cache_size_mutex); in raid5_set_cache_size()
6849 mutex_lock(&conf->cache_size_mutex); in raid5_set_cache_size()
6850 while (size > conf->max_nr_stripes) in raid5_set_cache_size()
6851 if (!grow_one_stripe(conf, GFP_KERNEL)) { in raid5_set_cache_size()
6852 WRITE_ONCE(conf->min_nr_stripes, conf->max_nr_stripes); in raid5_set_cache_size()
6856 mutex_unlock(&conf->cache_size_mutex); in raid5_set_cache_size()
6865 struct r5conf *conf; in raid5_store_stripe_cache_size() local
6876 conf = mddev->private; in raid5_store_stripe_cache_size()
6877 if (!conf) in raid5_store_stripe_cache_size()
6894 struct r5conf *conf = mddev->private; in raid5_show_rmw_level() local
6895 if (conf) in raid5_show_rmw_level()
6896 return sprintf(page, "%d\n", conf->rmw_level); in raid5_show_rmw_level()
6904 struct r5conf *conf = mddev->private; in raid5_store_rmw_level() local
6907 if (!conf) in raid5_store_rmw_level()
6924 conf->rmw_level = new; in raid5_store_rmw_level()
6936 struct r5conf *conf; in raid5_show_stripe_size() local
6940 conf = mddev->private; in raid5_show_stripe_size()
6941 if (conf) in raid5_show_stripe_size()
6942 ret = sprintf(page, "%lu\n", RAID5_STRIPE_SIZE(conf)); in raid5_show_stripe_size()
6951 struct r5conf *conf; in raid5_store_stripe_size() local
6975 conf = mddev->private; in raid5_store_stripe_size()
6976 if (!conf) { in raid5_store_stripe_size()
6981 if (new == conf->stripe_size) in raid5_store_stripe_size()
6985 conf->stripe_size, new); in raid5_store_stripe_size()
6993 mutex_lock(&conf->cache_size_mutex); in raid5_store_stripe_size()
6994 size = conf->max_nr_stripes; in raid5_store_stripe_size()
6996 shrink_stripes(conf); in raid5_store_stripe_size()
6998 conf->stripe_size = new; in raid5_store_stripe_size()
6999 conf->stripe_shift = ilog2(new) - 9; in raid5_store_stripe_size()
7000 conf->stripe_sectors = new >> 9; in raid5_store_stripe_size()
7001 if (grow_stripes(conf, size)) { in raid5_store_stripe_size()
7006 mutex_unlock(&conf->cache_size_mutex); in raid5_store_stripe_size()
7027 struct r5conf *conf; in raid5_show_preread_threshold() local
7030 conf = mddev->private; in raid5_show_preread_threshold()
7031 if (conf) in raid5_show_preread_threshold()
7032 ret = sprintf(page, "%d\n", conf->bypass_threshold); in raid5_show_preread_threshold()
7040 struct r5conf *conf; in raid5_store_preread_threshold() local
7052 conf = mddev->private; in raid5_store_preread_threshold()
7053 if (!conf) in raid5_store_preread_threshold()
7055 else if (new > conf->min_nr_stripes) in raid5_store_preread_threshold()
7058 conf->bypass_threshold = new; in raid5_store_preread_threshold()
7072 struct r5conf *conf; in raid5_show_skip_copy() local
7075 conf = mddev->private; in raid5_show_skip_copy()
7076 if (conf) in raid5_show_skip_copy()
7077 ret = sprintf(page, "%d\n", conf->skip_copy); in raid5_show_skip_copy()
7085 struct r5conf *conf; in raid5_store_skip_copy() local
7098 conf = mddev->private; in raid5_store_skip_copy()
7099 if (!conf) in raid5_store_skip_copy()
7101 else if (new != conf->skip_copy) { in raid5_store_skip_copy()
7105 conf->skip_copy = new; in raid5_store_skip_copy()
7124 struct r5conf *conf = mddev->private; in stripe_cache_active_show() local
7125 if (conf) in stripe_cache_active_show()
7126 return sprintf(page, "%d\n", atomic_read(&conf->active_stripes)); in stripe_cache_active_show()
7137 struct r5conf *conf; in raid5_show_group_thread_cnt() local
7140 conf = mddev->private; in raid5_show_group_thread_cnt()
7141 if (conf) in raid5_show_group_thread_cnt()
7142 ret = sprintf(page, "%d\n", conf->worker_cnt_per_group); in raid5_show_group_thread_cnt()
7147 static int alloc_thread_groups(struct r5conf *conf, int cnt,
7153 struct r5conf *conf; in raid5_store_group_thread_cnt() local
7172 conf = mddev->private; in raid5_store_group_thread_cnt()
7173 if (!conf) in raid5_store_group_thread_cnt()
7175 else if (new != conf->worker_cnt_per_group) { in raid5_store_group_thread_cnt()
7176 old_groups = conf->worker_groups; in raid5_store_group_thread_cnt()
7180 err = alloc_thread_groups(conf, new, &group_cnt, &new_groups); in raid5_store_group_thread_cnt()
7182 spin_lock_irq(&conf->device_lock); in raid5_store_group_thread_cnt()
7183 conf->group_cnt = group_cnt; in raid5_store_group_thread_cnt()
7184 conf->worker_cnt_per_group = new; in raid5_store_group_thread_cnt()
7185 conf->worker_groups = new_groups; in raid5_store_group_thread_cnt()
7186 spin_unlock_irq(&conf->device_lock); in raid5_store_group_thread_cnt()
7222 static int alloc_thread_groups(struct r5conf *conf, int cnt, int *group_cnt, in alloc_thread_groups() argument
7251 group->conf = conf; in alloc_thread_groups()
7267 static void free_thread_groups(struct r5conf *conf) in free_thread_groups() argument
7269 if (conf->worker_groups) in free_thread_groups()
7270 kfree(conf->worker_groups[0].workers); in free_thread_groups()
7271 kfree(conf->worker_groups); in free_thread_groups()
7272 conf->worker_groups = NULL; in free_thread_groups()
7278 struct r5conf *conf = mddev->private; in raid5_size() local
7284 raid_disks = min(conf->raid_disks, conf->previous_raid_disks); in raid5_size()
7286 sectors &= ~((sector_t)conf->chunk_sectors - 1); in raid5_size()
7287 sectors &= ~((sector_t)conf->prev_chunk_sectors - 1); in raid5_size()
7288 return sectors * (raid_disks - conf->max_degraded); in raid5_size()
7291 static void free_scratch_buffer(struct r5conf *conf, struct raid5_percpu *percpu) in free_scratch_buffer() argument
7299 static int alloc_scratch_buffer(struct r5conf *conf, struct raid5_percpu *percpu) in alloc_scratch_buffer() argument
7301 if (conf->level == 6 && !percpu->spare_page) { in alloc_scratch_buffer()
7308 max(conf->raid_disks, in alloc_scratch_buffer()
7309 conf->previous_raid_disks), in alloc_scratch_buffer()
7310 max(conf->chunk_sectors, in alloc_scratch_buffer()
7311 conf->prev_chunk_sectors) in alloc_scratch_buffer()
7312 / RAID5_STRIPE_SECTORS(conf))) { in alloc_scratch_buffer()
7313 free_scratch_buffer(conf, percpu); in alloc_scratch_buffer()
7323 struct r5conf *conf = hlist_entry_safe(node, struct r5conf, node); in raid456_cpu_dead() local
7325 free_scratch_buffer(conf, per_cpu_ptr(conf->percpu, cpu)); in raid456_cpu_dead()
7329 static void raid5_free_percpu(struct r5conf *conf) in raid5_free_percpu() argument
7331 if (!conf->percpu) in raid5_free_percpu()
7334 cpuhp_state_remove_instance(CPUHP_MD_RAID5_PREPARE, &conf->node); in raid5_free_percpu()
7335 free_percpu(conf->percpu); in raid5_free_percpu()
7338 static void free_conf(struct r5conf *conf) in free_conf() argument
7342 log_exit(conf); in free_conf()
7344 shrinker_free(conf->shrinker); in free_conf()
7345 free_thread_groups(conf); in free_conf()
7346 shrink_stripes(conf); in free_conf()
7347 raid5_free_percpu(conf); in free_conf()
7348 for (i = 0; i < conf->pool_size; i++) in free_conf()
7349 if (conf->disks[i].extra_page) in free_conf()
7350 put_page(conf->disks[i].extra_page); in free_conf()
7351 kfree(conf->disks); in free_conf()
7352 bioset_exit(&conf->bio_split); in free_conf()
7353 kfree(conf->stripe_hashtbl); in free_conf()
7354 kfree(conf->pending_data); in free_conf()
7355 kfree(conf); in free_conf()
7360 struct r5conf *conf = hlist_entry_safe(node, struct r5conf, node); in raid456_cpu_up_prepare() local
7361 struct raid5_percpu *percpu = per_cpu_ptr(conf->percpu, cpu); in raid456_cpu_up_prepare()
7363 if (alloc_scratch_buffer(conf, percpu)) { in raid456_cpu_up_prepare()
7371 static int raid5_alloc_percpu(struct r5conf *conf) in raid5_alloc_percpu() argument
7375 conf->percpu = alloc_percpu(struct raid5_percpu); in raid5_alloc_percpu()
7376 if (!conf->percpu) in raid5_alloc_percpu()
7379 err = cpuhp_state_add_instance(CPUHP_MD_RAID5_PREPARE, &conf->node); in raid5_alloc_percpu()
7381 conf->scribble_disks = max(conf->raid_disks, in raid5_alloc_percpu()
7382 conf->previous_raid_disks); in raid5_alloc_percpu()
7383 conf->scribble_sectors = max(conf->chunk_sectors, in raid5_alloc_percpu()
7384 conf->prev_chunk_sectors); in raid5_alloc_percpu()
7392 struct r5conf *conf = shrink->private_data; in raid5_cache_scan() local
7395 if (mutex_trylock(&conf->cache_size_mutex)) { in raid5_cache_scan()
7398 conf->max_nr_stripes > conf->min_nr_stripes) { in raid5_cache_scan()
7399 if (drop_one_stripe(conf) == 0) { in raid5_cache_scan()
7405 mutex_unlock(&conf->cache_size_mutex); in raid5_cache_scan()
7413 struct r5conf *conf = shrink->private_data; in raid5_cache_count() local
7414 int max_stripes = READ_ONCE(conf->max_nr_stripes); in raid5_cache_count()
7415 int min_stripes = READ_ONCE(conf->min_nr_stripes); in raid5_cache_count()
7425 struct r5conf *conf; in setup_conf() local
7464 conf = kzalloc(sizeof(struct r5conf), GFP_KERNEL); in setup_conf()
7465 if (conf == NULL) in setup_conf()
7469 conf->stripe_size = DEFAULT_STRIPE_SIZE; in setup_conf()
7470 conf->stripe_shift = ilog2(DEFAULT_STRIPE_SIZE) - 9; in setup_conf()
7471 conf->stripe_sectors = DEFAULT_STRIPE_SIZE >> 9; in setup_conf()
7473 INIT_LIST_HEAD(&conf->free_list); in setup_conf()
7474 INIT_LIST_HEAD(&conf->pending_list); in setup_conf()
7475 conf->pending_data = kcalloc(PENDING_IO_MAX, in setup_conf()
7478 if (!conf->pending_data) in setup_conf()
7481 list_add(&conf->pending_data[i].sibling, &conf->free_list); in setup_conf()
7483 if (!alloc_thread_groups(conf, 0, &group_cnt, &new_group)) { in setup_conf()
7484 conf->group_cnt = group_cnt; in setup_conf()
7485 conf->worker_cnt_per_group = 0; in setup_conf()
7486 conf->worker_groups = new_group; in setup_conf()
7489 spin_lock_init(&conf->device_lock); in setup_conf()
7490 seqcount_spinlock_init(&conf->gen_lock, &conf->device_lock); in setup_conf()
7491 mutex_init(&conf->cache_size_mutex); in setup_conf()
7493 init_waitqueue_head(&conf->wait_for_quiescent); in setup_conf()
7494 init_waitqueue_head(&conf->wait_for_stripe); in setup_conf()
7495 init_waitqueue_head(&conf->wait_for_reshape); in setup_conf()
7496 INIT_LIST_HEAD(&conf->handle_list); in setup_conf()
7497 INIT_LIST_HEAD(&conf->loprio_list); in setup_conf()
7498 INIT_LIST_HEAD(&conf->hold_list); in setup_conf()
7499 INIT_LIST_HEAD(&conf->delayed_list); in setup_conf()
7500 INIT_LIST_HEAD(&conf->bitmap_list); in setup_conf()
7501 init_llist_head(&conf->released_stripes); in setup_conf()
7502 atomic_set(&conf->active_stripes, 0); in setup_conf()
7503 atomic_set(&conf->preread_active_stripes, 0); in setup_conf()
7504 atomic_set(&conf->active_aligned_reads, 0); in setup_conf()
7505 spin_lock_init(&conf->pending_bios_lock); in setup_conf()
7506 conf->batch_bio_dispatch = true; in setup_conf()
7511 conf->batch_bio_dispatch = false; in setup_conf()
7516 conf->bypass_threshold = BYPASS_THRESHOLD; in setup_conf()
7517 conf->recovery_disabled = mddev->recovery_disabled - 1; in setup_conf()
7519 conf->raid_disks = mddev->raid_disks; in setup_conf()
7521 conf->previous_raid_disks = mddev->raid_disks; in setup_conf()
7523 conf->previous_raid_disks = mddev->raid_disks - mddev->delta_disks; in setup_conf()
7524 max_disks = max(conf->raid_disks, conf->previous_raid_disks); in setup_conf()
7526 conf->disks = kcalloc(max_disks, sizeof(struct disk_info), in setup_conf()
7529 if (!conf->disks) in setup_conf()
7533 conf->disks[i].extra_page = alloc_page(GFP_KERNEL); in setup_conf()
7534 if (!conf->disks[i].extra_page) in setup_conf()
7538 ret = bioset_init(&conf->bio_split, BIO_POOL_SIZE, 0, 0); in setup_conf()
7541 conf->mddev = mddev; in setup_conf()
7544 conf->stripe_hashtbl = kzalloc(PAGE_SIZE, GFP_KERNEL); in setup_conf()
7545 if (!conf->stripe_hashtbl) in setup_conf()
7553 spin_lock_init(conf->hash_locks); in setup_conf()
7555 spin_lock_init(conf->hash_locks + i); in setup_conf()
7558 INIT_LIST_HEAD(conf->inactive_list + i); in setup_conf()
7561 INIT_LIST_HEAD(conf->temp_inactive_list + i); in setup_conf()
7563 atomic_set(&conf->r5c_cached_full_stripes, 0); in setup_conf()
7564 INIT_LIST_HEAD(&conf->r5c_full_stripe_list); in setup_conf()
7565 atomic_set(&conf->r5c_cached_partial_stripes, 0); in setup_conf()
7566 INIT_LIST_HEAD(&conf->r5c_partial_stripe_list); in setup_conf()
7567 atomic_set(&conf->r5c_flushing_full_stripes, 0); in setup_conf()
7568 atomic_set(&conf->r5c_flushing_partial_stripes, 0); in setup_conf()
7570 conf->level = mddev->new_level; in setup_conf()
7571 conf->chunk_sectors = mddev->new_chunk_sectors; in setup_conf()
7572 ret = raid5_alloc_percpu(conf); in setup_conf()
7584 disk = conf->disks + raid_disk; in setup_conf()
7601 conf->fullsync = 1; in setup_conf()
7604 conf->level = mddev->new_level; in setup_conf()
7605 if (conf->level == 6) { in setup_conf()
7606 conf->max_degraded = 2; in setup_conf()
7608 conf->rmw_level = PARITY_ENABLE_RMW; in setup_conf()
7610 conf->rmw_level = PARITY_DISABLE_RMW; in setup_conf()
7612 conf->max_degraded = 1; in setup_conf()
7613 conf->rmw_level = PARITY_ENABLE_RMW; in setup_conf()
7615 conf->algorithm = mddev->new_layout; in setup_conf()
7616 conf->reshape_progress = mddev->reshape_position; in setup_conf()
7617 if (conf->reshape_progress != MaxSector) { in setup_conf()
7618 conf->prev_chunk_sectors = mddev->chunk_sectors; in setup_conf()
7619 conf->prev_algo = mddev->layout; in setup_conf()
7621 conf->prev_chunk_sectors = conf->chunk_sectors; in setup_conf()
7622 conf->prev_algo = conf->algorithm; in setup_conf()
7625 conf->min_nr_stripes = NR_STRIPES; in setup_conf()
7628 ((mddev->chunk_sectors << 9) / RAID5_STRIPE_SIZE(conf)) * 4, in setup_conf()
7629 ((mddev->new_chunk_sectors << 9) / RAID5_STRIPE_SIZE(conf)) * 4); in setup_conf()
7630 conf->min_nr_stripes = max(NR_STRIPES, stripes); in setup_conf()
7631 if (conf->min_nr_stripes != NR_STRIPES) in setup_conf()
7633 mdname(mddev), conf->min_nr_stripes); in setup_conf()
7635 memory = conf->min_nr_stripes * (sizeof(struct stripe_head) + in setup_conf()
7637 atomic_set(&conf->empty_inactive_list_nr, NR_STRIPE_HASH_LOCKS); in setup_conf()
7638 if (grow_stripes(conf, conf->min_nr_stripes)) { in setup_conf()
7650 conf->shrinker = shrinker_alloc(0, "md-raid5:%s", mdname(mddev)); in setup_conf()
7651 if (!conf->shrinker) { in setup_conf()
7658 conf->shrinker->seeks = DEFAULT_SEEKS * conf->raid_disks * 4; in setup_conf()
7659 conf->shrinker->scan_objects = raid5_cache_scan; in setup_conf()
7660 conf->shrinker->count_objects = raid5_cache_count; in setup_conf()
7661 conf->shrinker->batch = 128; in setup_conf()
7662 conf->shrinker->private_data = conf; in setup_conf()
7664 shrinker_register(conf->shrinker); in setup_conf()
7667 rcu_assign_pointer(conf->thread, 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()
7712 struct r5conf *conf = mddev->private; in raid5_set_limits() local
7721 data_disks = conf->previous_raid_disks - conf->max_degraded; in raid5_set_limits()
7731 lim.io_opt = lim.io_min * (conf->raid_disks - conf->max_degraded); in raid5_set_limits()
7763 lim.max_hw_sectors = RAID5_MAX_REQ_STRIPES << RAID5_STRIPE_SHIFT(conf); in raid5_set_limits()
7773 struct r5conf *conf; in raid5_run() local
7911 conf = setup_conf(mddev); in raid5_run()
7913 conf = mddev->private; in raid5_run()
7915 if (IS_ERR(conf)) in raid5_run()
7916 return PTR_ERR(conf); in raid5_run()
7928 conf->min_offset_diff = min_offset_diff; in raid5_run()
7929 rcu_assign_pointer(mddev->thread, conf->thread); in raid5_run()
7930 rcu_assign_pointer(conf->thread, NULL); in raid5_run()
7931 mddev->private = conf; in raid5_run()
7933 for (i = 0; i < conf->raid_disks && conf->previous_raid_disks; in raid5_run()
7935 rdev = conf->disks[i].rdev; in raid5_run()
7938 if (conf->disks[i].replacement && in raid5_run()
7939 conf->reshape_progress != MaxSector) { in raid5_run()
7962 conf->algorithm, in raid5_run()
7963 conf->raid_disks, in raid5_run()
7964 conf->max_degraded)) in raid5_run()
7968 conf->prev_algo, in raid5_run()
7969 conf->previous_raid_disks, in raid5_run()
7970 conf->max_degraded)) in raid5_run()
7978 mddev->degraded = raid5_calc_degraded(conf); in raid5_run()
7980 if (has_failed(conf)) { in raid5_run()
7982 mdname(mddev), mddev->degraded, conf->raid_disks); in raid5_run()
8006 mdname(mddev), conf->level, in raid5_run()
8010 print_raid5_conf(conf); in raid5_run()
8012 if (conf->reshape_progress != MaxSector) { in raid5_run()
8013 conf->reshape_safe = conf->reshape_progress; in raid5_run()
8014 atomic_set(&conf->reshape_stripes, 0); in raid5_run()
8036 if (log_init(conf, journal_dev, raid5_has_ppl(conf))) in raid5_run()
8042 print_raid5_conf(conf); in raid5_run()
8043 free_conf(conf); in raid5_run()
8051 struct r5conf *conf = priv; in raid5_free() local
8053 free_conf(conf); in raid5_free()
8059 struct r5conf *conf = mddev->private; in raid5_status() local
8065 conf->chunk_sectors / 2, mddev->layout); in raid5_status()
8066 seq_printf (seq, " [%d/%d] [", conf->raid_disks, conf->raid_disks - mddev->degraded); in raid5_status()
8067 for (i = 0; i < conf->raid_disks; i++) { in raid5_status()
8068 struct md_rdev *rdev = READ_ONCE(conf->disks[i].rdev); in raid5_status()
8075 static void print_raid5_conf(struct r5conf *conf) in print_raid5_conf() argument
8081 if (!conf) { in print_raid5_conf()
8085 pr_debug(" --- level:%d rd:%d wd:%d\n", conf->level, in print_raid5_conf()
8086 conf->raid_disks, in print_raid5_conf()
8087 conf->raid_disks - conf->mddev->degraded); in print_raid5_conf()
8089 for (i = 0; i < conf->raid_disks; i++) { in print_raid5_conf()
8090 rdev = conf->disks[i].rdev; in print_raid5_conf()
8101 struct r5conf *conf = mddev->private; in raid5_spare_active() local
8106 for (i = 0; i < conf->raid_disks; i++) { in raid5_spare_active()
8107 rdev = conf->disks[i].rdev; in raid5_spare_active()
8108 replacement = conf->disks[i].replacement; in raid5_spare_active()
8135 spin_lock_irqsave(&conf->device_lock, flags); in raid5_spare_active()
8136 mddev->degraded = raid5_calc_degraded(conf); in raid5_spare_active()
8137 spin_unlock_irqrestore(&conf->device_lock, flags); in raid5_spare_active()
8138 print_raid5_conf(conf); in raid5_spare_active()
8144 struct r5conf *conf = mddev->private; in raid5_remove_disk() local
8151 print_raid5_conf(conf); in raid5_remove_disk()
8152 if (test_bit(Journal, &rdev->flags) && conf->log) { in raid5_remove_disk()
8159 if (atomic_read(&conf->active_stripes) || in raid5_remove_disk()
8160 atomic_read(&conf->r5c_cached_full_stripes) || in raid5_remove_disk()
8161 atomic_read(&conf->r5c_cached_partial_stripes)) { in raid5_remove_disk()
8164 log_exit(conf); in raid5_remove_disk()
8167 if (unlikely(number >= conf->pool_size)) in raid5_remove_disk()
8169 p = conf->disks + number; in raid5_remove_disk()
8177 if (number >= conf->raid_disks && in raid5_remove_disk()
8178 conf->reshape_progress == MaxSector) in raid5_remove_disk()
8190 mddev->recovery_disabled != conf->recovery_disabled && in raid5_remove_disk()
8191 !has_failed(conf) && in raid5_remove_disk()
8193 number < conf->raid_disks) { in raid5_remove_disk()
8199 err = log_modify(conf, rdev, false); in raid5_remove_disk()
8212 err = log_modify(conf, tmp, true); in raid5_remove_disk()
8218 print_raid5_conf(conf); in raid5_remove_disk()
8224 struct r5conf *conf = mddev->private; in raid5_add_disk() local
8230 int last = conf->raid_disks - 1; in raid5_add_disk()
8233 if (conf->log) in raid5_add_disk()
8241 ret = log_init(conf, rdev, false); in raid5_add_disk()
8245 ret = r5l_start(conf->log); in raid5_add_disk()
8251 if (mddev->recovery_disabled == conf->recovery_disabled) in raid5_add_disk()
8254 if (rdev->saved_raid_disk < 0 && has_failed(conf)) in raid5_add_disk()
8267 conf->disks[rdev->saved_raid_disk].rdev == NULL) in raid5_add_disk()
8271 p = conf->disks + disk; in raid5_add_disk()
8276 conf->fullsync = 1; in raid5_add_disk()
8279 err = log_modify(conf, rdev, true); in raid5_add_disk()
8285 p = conf->disks + disk; in raid5_add_disk()
8294 conf->fullsync = 1; in raid5_add_disk()
8300 print_raid5_conf(conf); in raid5_add_disk()
8314 struct r5conf *conf = mddev->private; in raid5_resize() local
8317 if (raid5_has_log(conf) || raid5_has_ppl(conf)) in raid5_resize()
8319 sectors &= ~((sector_t)conf->chunk_sectors - 1); in raid5_resize()
8350 struct r5conf *conf = mddev->private; in check_stripe_cache() local
8351 if (((mddev->chunk_sectors << 9) / RAID5_STRIPE_SIZE(conf)) * 4 in check_stripe_cache()
8352 > conf->min_nr_stripes || in check_stripe_cache()
8353 ((mddev->new_chunk_sectors << 9) / RAID5_STRIPE_SIZE(conf)) * 4 in check_stripe_cache()
8354 > conf->min_nr_stripes) { in check_stripe_cache()
8358 / RAID5_STRIPE_SIZE(conf))*4); in check_stripe_cache()
8366 struct r5conf *conf = mddev->private; in check_reshape() local
8368 if (raid5_has_log(conf) || raid5_has_ppl(conf)) in check_reshape()
8374 if (has_failed(conf)) in check_reshape()
8394 if (resize_chunks(conf, in check_reshape()
8395 conf->previous_raid_disks in check_reshape()
8402 if (conf->previous_raid_disks + mddev->delta_disks <= conf->pool_size) in check_reshape()
8404 return resize_stripes(conf, (conf->previous_raid_disks in check_reshape()
8410 struct r5conf *conf = mddev->private; in raid5_start_reshape() local
8422 if (has_failed(conf)) in raid5_start_reshape()
8428 for (i = 0; i < conf->raid_disks; i++) in raid5_start_reshape()
8429 if (conf->disks[i].replacement) in raid5_start_reshape()
8438 if (spares - mddev->degraded < mddev->delta_disks - conf->max_degraded) in raid5_start_reshape()
8448 if (raid5_size(mddev, 0, conf->raid_disks + mddev->delta_disks) in raid5_start_reshape()
8455 atomic_set(&conf->reshape_stripes, 0); in raid5_start_reshape()
8456 spin_lock_irq(&conf->device_lock); in raid5_start_reshape()
8457 write_seqcount_begin(&conf->gen_lock); in raid5_start_reshape()
8458 conf->previous_raid_disks = conf->raid_disks; in raid5_start_reshape()
8459 conf->raid_disks += mddev->delta_disks; in raid5_start_reshape()
8460 conf->prev_chunk_sectors = conf->chunk_sectors; in raid5_start_reshape()
8461 conf->chunk_sectors = mddev->new_chunk_sectors; in raid5_start_reshape()
8462 conf->prev_algo = conf->algorithm; in raid5_start_reshape()
8463 conf->algorithm = mddev->new_layout; in raid5_start_reshape()
8464 conf->generation++; in raid5_start_reshape()
8470 conf->reshape_progress = raid5_size(mddev, 0, 0); in raid5_start_reshape()
8472 conf->reshape_progress = 0; in raid5_start_reshape()
8473 conf->reshape_safe = conf->reshape_progress; in raid5_start_reshape()
8474 write_seqcount_end(&conf->gen_lock); in raid5_start_reshape()
8475 spin_unlock_irq(&conf->device_lock); in raid5_start_reshape()
8497 >= conf->previous_raid_disks) in raid5_start_reshape()
8505 } else if (rdev->raid_disk >= conf->previous_raid_disks in raid5_start_reshape()
8515 spin_lock_irqsave(&conf->device_lock, flags); in raid5_start_reshape()
8516 mddev->degraded = raid5_calc_degraded(conf); in raid5_start_reshape()
8517 spin_unlock_irqrestore(&conf->device_lock, flags); in raid5_start_reshape()
8519 mddev->raid_disks = conf->raid_disks; in raid5_start_reshape()
8520 mddev->reshape_position = conf->reshape_progress; in raid5_start_reshape()
8528 conf->reshape_checkpoint = jiffies; in raid5_start_reshape()
8536 static void end_reshape(struct r5conf *conf) in end_reshape() argument
8539 if (!test_bit(MD_RECOVERY_INTR, &conf->mddev->recovery)) { in end_reshape()
8542 spin_lock_irq(&conf->device_lock); in end_reshape()
8543 conf->previous_raid_disks = conf->raid_disks; in end_reshape()
8544 md_finish_reshape(conf->mddev); in end_reshape()
8546 conf->reshape_progress = MaxSector; in end_reshape()
8547 conf->mddev->reshape_position = MaxSector; in end_reshape()
8548 rdev_for_each(rdev, conf->mddev) in end_reshape()
8553 spin_unlock_irq(&conf->device_lock); in end_reshape()
8554 wake_up(&conf->wait_for_reshape); in end_reshape()
8556 mddev_update_io_opt(conf->mddev, in end_reshape()
8557 conf->raid_disks - conf->max_degraded); in end_reshape()
8566 struct r5conf *conf = mddev->private; in raid5_finish_reshape() local
8573 spin_lock_irq(&conf->device_lock); in raid5_finish_reshape()
8574 mddev->degraded = raid5_calc_degraded(conf); in raid5_finish_reshape()
8575 spin_unlock_irq(&conf->device_lock); in raid5_finish_reshape()
8576 for (d = conf->raid_disks ; in raid5_finish_reshape()
8577 d < conf->raid_disks - mddev->delta_disks; in raid5_finish_reshape()
8579 rdev = conf->disks[d].rdev; in raid5_finish_reshape()
8582 rdev = conf->disks[d].replacement; in raid5_finish_reshape()
8587 mddev->layout = conf->algorithm; in raid5_finish_reshape()
8588 mddev->chunk_sectors = conf->chunk_sectors; in raid5_finish_reshape()
8597 struct r5conf *conf = mddev->private; in raid5_quiesce() local
8601 lock_all_device_hash_locks_irq(conf); in raid5_quiesce()
8605 r5c_flush_cache(conf, INT_MAX); in raid5_quiesce()
8609 smp_store_release(&conf->quiesce, 2); in raid5_quiesce()
8610 wait_event_cmd(conf->wait_for_quiescent, in raid5_quiesce()
8611 atomic_read(&conf->active_stripes) == 0 && in raid5_quiesce()
8612 atomic_read(&conf->active_aligned_reads) == 0, in raid5_quiesce()
8613 unlock_all_device_hash_locks_irq(conf), in raid5_quiesce()
8614 lock_all_device_hash_locks_irq(conf)); in raid5_quiesce()
8615 conf->quiesce = 1; in raid5_quiesce()
8616 unlock_all_device_hash_locks_irq(conf); in raid5_quiesce()
8618 wake_up(&conf->wait_for_reshape); in raid5_quiesce()
8621 lock_all_device_hash_locks_irq(conf); in raid5_quiesce()
8622 conf->quiesce = 0; in raid5_quiesce()
8623 wake_up(&conf->wait_for_quiescent); in raid5_quiesce()
8624 wake_up(&conf->wait_for_reshape); in raid5_quiesce()
8625 unlock_all_device_hash_locks_irq(conf); in raid5_quiesce()
8627 log_quiesce(conf, quiesce); in raid5_quiesce()
8728 struct r5conf *conf = mddev->private; in raid5_check_reshape() local
8748 conf->algorithm = mddev->new_layout; in raid5_check_reshape()
8752 conf->chunk_sectors = new_chunk ; in raid5_check_reshape()
8871 struct r5conf *conf; in raid5_change_consistency_policy() local
8877 conf = mddev->private; in raid5_change_consistency_policy()
8878 if (!conf) { in raid5_change_consistency_policy()
8885 if (!raid5_has_ppl(conf) && conf->level == 5) { in raid5_change_consistency_policy()
8886 err = log_init(conf, NULL, true); in raid5_change_consistency_policy()
8888 err = resize_stripes(conf, conf->pool_size); in raid5_change_consistency_policy()
8890 log_exit(conf); in raid5_change_consistency_policy()
8895 if (raid5_has_ppl(conf)) { in raid5_change_consistency_policy()
8896 log_exit(conf); in raid5_change_consistency_policy()
8897 err = resize_stripes(conf, conf->pool_size); in raid5_change_consistency_policy()
8898 } else if (test_bit(MD_HAS_JOURNAL, &conf->mddev->flags) && in raid5_change_consistency_policy()
8899 r5l_log_disk_error(conf)) { in raid5_change_consistency_policy()
8929 struct r5conf *conf = mddev->private; in raid5_start() local
8931 return r5l_start(conf->log); in raid5_start()
8941 struct r5conf *conf = mddev->private; in raid5_prepare_suspend() local
8943 wake_up(&conf->wait_for_reshape); in raid5_prepare_suspend()