Lines Matching refs:log
212 struct r5l_log *log; member
252 bool r5c_is_writeback(struct r5l_log *log) in r5c_is_writeback() argument
254 return (log != NULL && in r5c_is_writeback()
255 log->r5c_journal_mode == R5C_JOURNAL_MODE_WRITE_BACK); in r5c_is_writeback()
258 static sector_t r5l_ring_add(struct r5l_log *log, sector_t start, sector_t inc) in r5l_ring_add() argument
261 if (start >= log->device_size) in r5l_ring_add()
262 start = start - log->device_size; in r5l_ring_add()
266 static sector_t r5l_ring_distance(struct r5l_log *log, sector_t start, in r5l_ring_distance() argument
272 return end + log->device_size - start; in r5l_ring_distance()
275 static bool r5l_has_free_space(struct r5l_log *log, sector_t size) in r5l_has_free_space() argument
279 used_size = r5l_ring_distance(log, log->last_checkpoint, in r5l_has_free_space()
280 log->log_start); in r5l_has_free_space()
282 return log->device_size > used_size + size; in r5l_has_free_space()
326 void r5l_wake_reclaim(struct r5l_log *log, sector_t space);
333 if (!r5c_is_writeback(conf->log)) in r5c_check_stripe_cache_usage()
349 r5l_wake_reclaim(conf->log, 0); in r5c_check_stripe_cache_usage()
358 if (!r5c_is_writeback(conf->log)) in r5c_check_cached_full_stripe()
368 r5l_wake_reclaim(conf->log, 0); in r5c_check_cached_full_stripe()
401 struct r5l_log *log = conf->log; in r5c_log_required_to_flush_cache() local
403 if (!r5c_is_writeback(log)) in r5c_log_required_to_flush_cache()
407 ((conf->max_degraded + 1) * atomic_read(&log->stripe_in_journal_count) + in r5c_log_required_to_flush_cache()
418 static inline void r5c_update_log_state(struct r5l_log *log) in r5c_update_log_state() argument
420 struct r5conf *conf = log->rdev->mddev->private; in r5c_update_log_state()
425 if (!r5c_is_writeback(log)) in r5c_update_log_state()
428 free_space = r5l_ring_distance(log, log->log_start, in r5c_update_log_state()
429 log->last_checkpoint); in r5c_update_log_state()
444 r5l_wake_reclaim(log, 0); in r5c_update_log_state()
454 struct r5l_log *log = conf->log; in r5c_make_stripe_write_out() local
456 BUG_ON(!r5c_is_writeback(log)); in r5c_make_stripe_write_out()
496 struct r5l_log *log = sh->raid_conf->log; in r5c_finish_cache_stripe() local
498 if (log->r5c_journal_mode == R5C_JOURNAL_MODE_WRITE_THROUGH) { in r5c_finish_cache_stripe()
529 static void r5l_log_run_stripes(struct r5l_log *log) in r5l_log_run_stripes() argument
533 lockdep_assert_held(&log->io_list_lock); in r5l_log_run_stripes()
535 list_for_each_entry_safe(io, next, &log->running_ios, log_sibling) { in r5l_log_run_stripes()
540 list_move_tail(&io->log_sibling, &log->finished_ios); in r5l_log_run_stripes()
545 static void r5l_move_to_end_ios(struct r5l_log *log) in r5l_move_to_end_ios() argument
549 lockdep_assert_held(&log->io_list_lock); in r5l_move_to_end_ios()
551 list_for_each_entry_safe(io, next, &log->running_ios, log_sibling) { in r5l_move_to_end_ios()
555 list_move_tail(&io->log_sibling, &log->io_end_ios); in r5l_move_to_end_ios()
564 struct r5l_log *log = io->log; in r5l_log_endio() local
570 md_error(log->rdev->mddev, log->rdev); in r5l_log_endio()
573 mempool_free(io->meta_page, &log->meta_pool); in r5l_log_endio()
575 spin_lock_irqsave(&log->io_list_lock, flags); in r5l_log_endio()
587 if (log->need_cache_flush && !list_empty(&io->stripe_list)) in r5l_log_endio()
588 r5l_move_to_end_ios(log); in r5l_log_endio()
590 r5l_log_run_stripes(log); in r5l_log_endio()
591 if (!list_empty(&log->running_ios)) { in r5l_log_endio()
596 io_deferred = list_first_entry(&log->running_ios, in r5l_log_endio()
599 schedule_work(&log->deferred_io_work); in r5l_log_endio()
602 spin_unlock_irqrestore(&log->io_list_lock, flags); in r5l_log_endio()
604 if (log->need_cache_flush) in r5l_log_endio()
605 md_wakeup_thread(log->rdev->mddev->thread); in r5l_log_endio()
626 static void r5l_do_submit_io(struct r5l_log *log, struct r5l_io_unit *io) in r5l_do_submit_io() argument
630 spin_lock_irqsave(&log->io_list_lock, flags); in r5l_do_submit_io()
632 spin_unlock_irqrestore(&log->io_list_lock, flags); in r5l_do_submit_io()
663 struct r5l_log *log = container_of(work, struct r5l_log, in r5l_submit_io_async() local
668 spin_lock_irqsave(&log->io_list_lock, flags); in r5l_submit_io_async()
669 if (!list_empty(&log->running_ios)) { in r5l_submit_io_async()
670 io = list_first_entry(&log->running_ios, struct r5l_io_unit, in r5l_submit_io_async()
677 spin_unlock_irqrestore(&log->io_list_lock, flags); in r5l_submit_io_async()
679 r5l_do_submit_io(log, io); in r5l_submit_io_async()
684 struct r5l_log *log = container_of(work, struct r5l_log, in r5c_disable_writeback_async() local
686 struct mddev *mddev = log->rdev->mddev; in r5c_disable_writeback_async()
690 if (log->r5c_journal_mode == R5C_JOURNAL_MODE_WRITE_THROUGH) in r5c_disable_writeback_async()
697 conf->log == NULL || in r5c_disable_writeback_async()
702 log->r5c_journal_mode = R5C_JOURNAL_MODE_WRITE_THROUGH; in r5c_disable_writeback_async()
708 static void r5l_submit_current_io(struct r5l_log *log) in r5l_submit_current_io() argument
710 struct r5l_io_unit *io = log->current_io; in r5l_submit_current_io()
721 crc = crc32c_le(log->uuid_checksum, block, PAGE_SIZE); in r5l_submit_current_io()
724 log->current_io = NULL; in r5l_submit_current_io()
725 spin_lock_irqsave(&log->io_list_lock, flags); in r5l_submit_current_io()
727 if (io != list_first_entry(&log->running_ios, in r5l_submit_current_io()
733 spin_unlock_irqrestore(&log->io_list_lock, flags); in r5l_submit_current_io()
735 r5l_do_submit_io(log, io); in r5l_submit_current_io()
738 static struct bio *r5l_bio_alloc(struct r5l_log *log) in r5l_bio_alloc() argument
740 struct bio *bio = bio_alloc_bioset(GFP_NOIO, BIO_MAX_PAGES, &log->bs); in r5l_bio_alloc()
743 bio_set_dev(bio, log->rdev->bdev); in r5l_bio_alloc()
744 bio->bi_iter.bi_sector = log->rdev->data_offset + log->log_start; in r5l_bio_alloc()
749 static void r5_reserve_log_entry(struct r5l_log *log, struct r5l_io_unit *io) in r5_reserve_log_entry() argument
751 log->log_start = r5l_ring_add(log, log->log_start, BLOCK_SECTORS); in r5_reserve_log_entry()
753 r5c_update_log_state(log); in r5_reserve_log_entry()
761 if (log->log_start == 0) in r5_reserve_log_entry()
764 io->log_end = log->log_start; in r5_reserve_log_entry()
767 static struct r5l_io_unit *r5l_new_meta(struct r5l_log *log) in r5l_new_meta() argument
772 io = mempool_alloc(&log->io_pool, GFP_ATOMIC); in r5l_new_meta()
777 io->log = log; in r5l_new_meta()
783 io->meta_page = mempool_alloc(&log->meta_pool, GFP_NOIO); in r5l_new_meta()
788 block->seq = cpu_to_le64(log->seq); in r5l_new_meta()
789 block->position = cpu_to_le64(log->log_start); in r5l_new_meta()
791 io->log_start = log->log_start; in r5l_new_meta()
793 io->seq = log->seq++; in r5l_new_meta()
795 io->current_bio = r5l_bio_alloc(log); in r5l_new_meta()
800 r5_reserve_log_entry(log, io); in r5l_new_meta()
802 spin_lock_irq(&log->io_list_lock); in r5l_new_meta()
803 list_add_tail(&io->log_sibling, &log->running_ios); in r5l_new_meta()
804 spin_unlock_irq(&log->io_list_lock); in r5l_new_meta()
809 static int r5l_get_meta(struct r5l_log *log, unsigned int payload_size) in r5l_get_meta() argument
811 if (log->current_io && in r5l_get_meta()
812 log->current_io->meta_offset + payload_size > PAGE_SIZE) in r5l_get_meta()
813 r5l_submit_current_io(log); in r5l_get_meta()
815 if (!log->current_io) { in r5l_get_meta()
816 log->current_io = r5l_new_meta(log); in r5l_get_meta()
817 if (!log->current_io) in r5l_get_meta()
824 static void r5l_append_payload_meta(struct r5l_log *log, u16 type, in r5l_append_payload_meta() argument
829 struct r5l_io_unit *io = log->current_io; in r5l_append_payload_meta()
846 static void r5l_append_payload_page(struct r5l_log *log, struct page *page) in r5l_append_payload_page() argument
848 struct r5l_io_unit *io = log->current_io; in r5l_append_payload_page()
853 io->current_bio = r5l_bio_alloc(log); in r5l_append_payload_page()
861 r5_reserve_log_entry(log, io); in r5l_append_payload_page()
864 static void r5l_append_flush_payload(struct r5l_log *log, sector_t sect) in r5l_append_flush_payload() argument
866 struct mddev *mddev = log->rdev->mddev; in r5l_append_flush_payload()
880 mutex_lock(&log->io_mutex); in r5l_append_flush_payload()
883 if (r5l_get_meta(log, meta_size)) { in r5l_append_flush_payload()
884 mutex_unlock(&log->io_mutex); in r5l_append_flush_payload()
889 io = log->current_io; in r5l_append_flush_payload()
901 mutex_unlock(&log->io_mutex); in r5l_append_flush_payload()
904 static int r5l_log_stripe(struct r5l_log *log, struct stripe_head *sh, in r5l_log_stripe() argument
918 ret = r5l_get_meta(log, meta_size); in r5l_log_stripe()
922 io = log->current_io; in r5l_log_stripe()
934 log->r5c_journal_mode == R5C_JOURNAL_MODE_WRITE_BACK) { in r5l_log_stripe()
942 r5l_append_payload_meta(log, R5LOG_PAYLOAD_DATA, in r5l_log_stripe()
945 r5l_append_payload_page(log, sh->dev[i].page); in r5l_log_stripe()
949 r5l_append_payload_meta(log, R5LOG_PAYLOAD_PARITY, in r5l_log_stripe()
952 r5l_append_payload_page(log, sh->dev[sh->pd_idx].page); in r5l_log_stripe()
953 r5l_append_payload_page(log, sh->dev[sh->qd_idx].page); in r5l_log_stripe()
955 r5l_append_payload_meta(log, R5LOG_PAYLOAD_PARITY, in r5l_log_stripe()
958 r5l_append_payload_page(log, sh->dev[sh->pd_idx].page); in r5l_log_stripe()
966 if (log->r5c_journal_mode == R5C_JOURNAL_MODE_WRITE_THROUGH) in r5l_log_stripe()
972 spin_lock_irq(&log->stripe_in_journal_lock); in r5l_log_stripe()
974 &log->stripe_in_journal_list); in r5l_log_stripe()
975 spin_unlock_irq(&log->stripe_in_journal_lock); in r5l_log_stripe()
976 atomic_inc(&log->stripe_in_journal_count); in r5l_log_stripe()
982 static inline void r5l_add_no_space_stripe(struct r5l_log *log, in r5l_add_no_space_stripe() argument
985 spin_lock(&log->no_space_stripes_lock); in r5l_add_no_space_stripe()
986 list_add_tail(&sh->log_list, &log->no_space_stripes); in r5l_add_no_space_stripe()
987 spin_unlock(&log->no_space_stripes_lock); in r5l_add_no_space_stripe()
994 int r5l_write_stripe(struct r5l_log *log, struct stripe_head *sh) in r5l_write_stripe() argument
1004 if (!log) in r5l_write_stripe()
1028 sh->dev[i].log_checksum = crc32c_le(log->uuid_checksum, in r5l_write_stripe()
1043 mutex_lock(&log->io_mutex); in r5l_write_stripe()
1047 if (log->r5c_journal_mode == R5C_JOURNAL_MODE_WRITE_THROUGH) { in r5l_write_stripe()
1048 if (!r5l_has_free_space(log, reserve)) { in r5l_write_stripe()
1049 r5l_add_no_space_stripe(log, sh); in r5l_write_stripe()
1052 ret = r5l_log_stripe(log, sh, data_pages, parity_pages); in r5l_write_stripe()
1054 spin_lock_irq(&log->io_list_lock); in r5l_write_stripe()
1056 &log->no_mem_stripes); in r5l_write_stripe()
1057 spin_unlock_irq(&log->io_list_lock); in r5l_write_stripe()
1067 r5l_add_no_space_stripe(log, sh); in r5l_write_stripe()
1070 } else if (!r5l_has_free_space(log, reserve)) { in r5l_write_stripe()
1071 if (sh->log_start == log->last_checkpoint) in r5l_write_stripe()
1074 r5l_add_no_space_stripe(log, sh); in r5l_write_stripe()
1076 ret = r5l_log_stripe(log, sh, data_pages, parity_pages); in r5l_write_stripe()
1078 spin_lock_irq(&log->io_list_lock); in r5l_write_stripe()
1080 &log->no_mem_stripes); in r5l_write_stripe()
1081 spin_unlock_irq(&log->io_list_lock); in r5l_write_stripe()
1086 mutex_unlock(&log->io_mutex); in r5l_write_stripe()
1088 r5l_wake_reclaim(log, reserve); in r5l_write_stripe()
1092 void r5l_write_stripe_run(struct r5l_log *log) in r5l_write_stripe_run() argument
1094 if (!log) in r5l_write_stripe_run()
1096 mutex_lock(&log->io_mutex); in r5l_write_stripe_run()
1097 r5l_submit_current_io(log); in r5l_write_stripe_run()
1098 mutex_unlock(&log->io_mutex); in r5l_write_stripe_run()
1101 int r5l_handle_flush_request(struct r5l_log *log, struct bio *bio) in r5l_handle_flush_request() argument
1103 if (log->r5c_journal_mode == R5C_JOURNAL_MODE_WRITE_THROUGH) { in r5l_handle_flush_request()
1119 mutex_lock(&log->io_mutex); in r5l_handle_flush_request()
1120 r5l_get_meta(log, 0); in r5l_handle_flush_request()
1121 bio_list_add(&log->current_io->flush_barriers, bio); in r5l_handle_flush_request()
1122 log->current_io->has_flush = 1; in r5l_handle_flush_request()
1123 log->current_io->has_null_flush = 1; in r5l_handle_flush_request()
1124 atomic_inc(&log->current_io->pending_stripe); in r5l_handle_flush_request()
1125 r5l_submit_current_io(log); in r5l_handle_flush_request()
1126 mutex_unlock(&log->io_mutex); in r5l_handle_flush_request()
1134 static void r5l_run_no_space_stripes(struct r5l_log *log) in r5l_run_no_space_stripes() argument
1138 spin_lock(&log->no_space_stripes_lock); in r5l_run_no_space_stripes()
1139 while (!list_empty(&log->no_space_stripes)) { in r5l_run_no_space_stripes()
1140 sh = list_first_entry(&log->no_space_stripes, in r5l_run_no_space_stripes()
1146 spin_unlock(&log->no_space_stripes_lock); in r5l_run_no_space_stripes()
1157 struct r5l_log *log = conf->log; in r5c_calculate_new_cp() local
1161 if (log->r5c_journal_mode == R5C_JOURNAL_MODE_WRITE_THROUGH) in r5c_calculate_new_cp()
1162 return log->next_checkpoint; in r5c_calculate_new_cp()
1164 spin_lock_irqsave(&log->stripe_in_journal_lock, flags); in r5c_calculate_new_cp()
1165 if (list_empty(&conf->log->stripe_in_journal_list)) { in r5c_calculate_new_cp()
1167 spin_unlock_irqrestore(&log->stripe_in_journal_lock, flags); in r5c_calculate_new_cp()
1168 return log->next_checkpoint; in r5c_calculate_new_cp()
1170 sh = list_first_entry(&conf->log->stripe_in_journal_list, in r5c_calculate_new_cp()
1173 spin_unlock_irqrestore(&log->stripe_in_journal_lock, flags); in r5c_calculate_new_cp()
1177 static sector_t r5l_reclaimable_space(struct r5l_log *log) in r5l_reclaimable_space() argument
1179 struct r5conf *conf = log->rdev->mddev->private; in r5l_reclaimable_space()
1181 return r5l_ring_distance(log, log->last_checkpoint, in r5l_reclaimable_space()
1185 static void r5l_run_no_mem_stripe(struct r5l_log *log) in r5l_run_no_mem_stripe() argument
1189 lockdep_assert_held(&log->io_list_lock); in r5l_run_no_mem_stripe()
1191 if (!list_empty(&log->no_mem_stripes)) { in r5l_run_no_mem_stripe()
1192 sh = list_first_entry(&log->no_mem_stripes, in r5l_run_no_mem_stripe()
1200 static bool r5l_complete_finished_ios(struct r5l_log *log) in r5l_complete_finished_ios() argument
1205 lockdep_assert_held(&log->io_list_lock); in r5l_complete_finished_ios()
1207 list_for_each_entry_safe(io, next, &log->finished_ios, log_sibling) { in r5l_complete_finished_ios()
1212 log->next_checkpoint = io->log_start; in r5l_complete_finished_ios()
1215 mempool_free(io, &log->io_pool); in r5l_complete_finished_ios()
1216 r5l_run_no_mem_stripe(log); in r5l_complete_finished_ios()
1226 struct r5l_log *log = io->log; in __r5l_stripe_write_finished() local
1227 struct r5conf *conf = log->rdev->mddev->private; in __r5l_stripe_write_finished()
1230 spin_lock_irqsave(&log->io_list_lock, flags); in __r5l_stripe_write_finished()
1233 if (!r5l_complete_finished_ios(log)) { in __r5l_stripe_write_finished()
1234 spin_unlock_irqrestore(&log->io_list_lock, flags); in __r5l_stripe_write_finished()
1238 if (r5l_reclaimable_space(log) > log->max_free_space || in __r5l_stripe_write_finished()
1240 r5l_wake_reclaim(log, 0); in __r5l_stripe_write_finished()
1242 spin_unlock_irqrestore(&log->io_list_lock, flags); in __r5l_stripe_write_finished()
1243 wake_up(&log->iounit_wait); in __r5l_stripe_write_finished()
1259 struct r5l_log *log = container_of(bio, struct r5l_log, in r5l_log_flush_endio() local
1265 md_error(log->rdev->mddev, log->rdev); in r5l_log_flush_endio()
1267 spin_lock_irqsave(&log->io_list_lock, flags); in r5l_log_flush_endio()
1268 list_for_each_entry(io, &log->flushing_ios, log_sibling) in r5l_log_flush_endio()
1270 list_splice_tail_init(&log->flushing_ios, &log->finished_ios); in r5l_log_flush_endio()
1271 spin_unlock_irqrestore(&log->io_list_lock, flags); in r5l_log_flush_endio()
1288 void r5l_flush_stripe_to_raid(struct r5l_log *log) in r5l_flush_stripe_to_raid() argument
1292 if (!log || !log->need_cache_flush) in r5l_flush_stripe_to_raid()
1295 spin_lock_irq(&log->io_list_lock); in r5l_flush_stripe_to_raid()
1297 if (!list_empty(&log->flushing_ios)) { in r5l_flush_stripe_to_raid()
1298 spin_unlock_irq(&log->io_list_lock); in r5l_flush_stripe_to_raid()
1301 list_splice_tail_init(&log->io_end_ios, &log->flushing_ios); in r5l_flush_stripe_to_raid()
1302 do_flush = !list_empty(&log->flushing_ios); in r5l_flush_stripe_to_raid()
1303 spin_unlock_irq(&log->io_list_lock); in r5l_flush_stripe_to_raid()
1307 bio_reset(&log->flush_bio); in r5l_flush_stripe_to_raid()
1308 bio_set_dev(&log->flush_bio, log->rdev->bdev); in r5l_flush_stripe_to_raid()
1309 log->flush_bio.bi_end_io = r5l_log_flush_endio; in r5l_flush_stripe_to_raid()
1310 log->flush_bio.bi_opf = REQ_OP_WRITE | REQ_PREFLUSH; in r5l_flush_stripe_to_raid()
1311 submit_bio(&log->flush_bio); in r5l_flush_stripe_to_raid()
1314 static void r5l_write_super(struct r5l_log *log, sector_t cp);
1315 static void r5l_write_super_and_discard_space(struct r5l_log *log, in r5l_write_super_and_discard_space() argument
1318 struct block_device *bdev = log->rdev->bdev; in r5l_write_super_and_discard_space()
1321 r5l_write_super(log, end); in r5l_write_super_and_discard_space()
1326 mddev = log->rdev->mddev; in r5l_write_super_and_discard_space()
1346 if (log->last_checkpoint < end) { in r5l_write_super_and_discard_space()
1348 log->last_checkpoint + log->rdev->data_offset, in r5l_write_super_and_discard_space()
1349 end - log->last_checkpoint, GFP_NOIO, 0); in r5l_write_super_and_discard_space()
1352 log->last_checkpoint + log->rdev->data_offset, in r5l_write_super_and_discard_space()
1353 log->device_size - log->last_checkpoint, in r5l_write_super_and_discard_space()
1355 blkdev_issue_discard(bdev, log->rdev->data_offset, end, in r5l_write_super_and_discard_space()
1405 if (!conf->log) in r5c_flush_cache()
1426 struct r5l_log *log = conf->log; in r5c_do_reclaim() local
1434 if (!r5c_is_writeback(log)) in r5c_do_reclaim()
1470 spin_lock_irqsave(&log->stripe_in_journal_lock, flags); in r5c_do_reclaim()
1472 list_for_each_entry(sh, &log->stripe_in_journal_list, r5c) { in r5c_do_reclaim()
1490 spin_unlock_irqrestore(&log->stripe_in_journal_lock, flags); in r5c_do_reclaim()
1494 r5l_run_no_space_stripes(log); in r5c_do_reclaim()
1499 static void r5l_do_reclaim(struct r5l_log *log) in r5l_do_reclaim() argument
1501 struct r5conf *conf = log->rdev->mddev->private; in r5l_do_reclaim()
1502 sector_t reclaim_target = xchg(&log->reclaim_target, 0); in r5l_do_reclaim()
1507 spin_lock_irq(&log->io_list_lock); in r5l_do_reclaim()
1508 write_super = r5l_reclaimable_space(log) > log->max_free_space || in r5l_do_reclaim()
1509 reclaim_target != 0 || !list_empty(&log->no_space_stripes); in r5l_do_reclaim()
1516 reclaimable = r5l_reclaimable_space(log); in r5l_do_reclaim()
1518 (list_empty(&log->running_ios) && in r5l_do_reclaim()
1519 list_empty(&log->io_end_ios) && in r5l_do_reclaim()
1520 list_empty(&log->flushing_ios) && in r5l_do_reclaim()
1521 list_empty(&log->finished_ios))) in r5l_do_reclaim()
1524 md_wakeup_thread(log->rdev->mddev->thread); in r5l_do_reclaim()
1525 wait_event_lock_irq(log->iounit_wait, in r5l_do_reclaim()
1526 r5l_reclaimable_space(log) > reclaimable, in r5l_do_reclaim()
1527 log->io_list_lock); in r5l_do_reclaim()
1531 spin_unlock_irq(&log->io_list_lock); in r5l_do_reclaim()
1541 r5l_write_super_and_discard_space(log, next_checkpoint); in r5l_do_reclaim()
1543 mutex_lock(&log->io_mutex); in r5l_do_reclaim()
1544 log->last_checkpoint = next_checkpoint; in r5l_do_reclaim()
1545 r5c_update_log_state(log); in r5l_do_reclaim()
1546 mutex_unlock(&log->io_mutex); in r5l_do_reclaim()
1548 r5l_run_no_space_stripes(log); in r5l_do_reclaim()
1555 struct r5l_log *log = conf->log; in r5l_reclaim_thread() local
1557 if (!log) in r5l_reclaim_thread()
1560 r5l_do_reclaim(log); in r5l_reclaim_thread()
1563 void r5l_wake_reclaim(struct r5l_log *log, sector_t space) in r5l_wake_reclaim() argument
1568 if (!log) in r5l_wake_reclaim()
1571 target = log->reclaim_target; in r5l_wake_reclaim()
1574 } while (cmpxchg(&log->reclaim_target, target, new) != target); in r5l_wake_reclaim()
1575 md_wakeup_thread(log->reclaim_thread); in r5l_wake_reclaim()
1578 void r5l_quiesce(struct r5l_log *log, int quiesce) in r5l_quiesce() argument
1584 mddev = log->rdev->mddev; in r5l_quiesce()
1586 kthread_park(log->reclaim_thread->tsk); in r5l_quiesce()
1587 r5l_wake_reclaim(log, MaxSector); in r5l_quiesce()
1588 r5l_do_reclaim(log); in r5l_quiesce()
1590 kthread_unpark(log->reclaim_thread->tsk); in r5l_quiesce()
1595 struct r5l_log *log; in r5l_log_disk_error() local
1599 log = rcu_dereference(conf->log); in r5l_log_disk_error()
1601 if (!log) in r5l_log_disk_error()
1604 ret = test_bit(Faulty, &log->rdev->flags); in r5l_log_disk_error()
1634 static int r5l_recovery_allocate_ra_pool(struct r5l_log *log, in r5l_recovery_allocate_ra_pool() argument
1639 ctx->ra_bio = bio_alloc_bioset(GFP_KERNEL, BIO_MAX_PAGES, &log->bs); in r5l_recovery_allocate_ra_pool()
1663 static void r5l_recovery_free_ra_pool(struct r5l_log *log, in r5l_recovery_free_ra_pool() argument
1679 static int r5l_recovery_fetch_ra_pool(struct r5l_log *log, in r5l_recovery_fetch_ra_pool() argument
1684 bio_set_dev(ctx->ra_bio, log->rdev->bdev); in r5l_recovery_fetch_ra_pool()
1686 ctx->ra_bio->bi_iter.bi_sector = log->rdev->data_offset + offset; in r5l_recovery_fetch_ra_pool()
1696 offset = r5l_ring_add(log, offset, BLOCK_SECTORS); in r5l_recovery_fetch_ra_pool()
1709 static int r5l_recovery_read_page(struct r5l_log *log, in r5l_recovery_read_page() argument
1718 ret = r5l_recovery_fetch_ra_pool(log, ctx, offset); in r5l_recovery_read_page()
1733 static int r5l_recovery_read_meta_block(struct r5l_log *log, in r5l_recovery_read_meta_block() argument
1741 ret = r5l_recovery_read_page(log, ctx, page, ctx->pos); in r5l_recovery_read_meta_block()
1755 crc = crc32c_le(log->uuid_checksum, mb, PAGE_SIZE); in r5l_recovery_read_meta_block()
1768 r5l_recovery_create_empty_meta_block(struct r5l_log *log, in r5l_recovery_create_empty_meta_block() argument
1783 static int r5l_log_write_empty_meta_block(struct r5l_log *log, sector_t pos, in r5l_log_write_empty_meta_block() argument
1792 r5l_recovery_create_empty_meta_block(log, page, pos, seq); in r5l_log_write_empty_meta_block()
1794 mb->checksum = cpu_to_le32(crc32c_le(log->uuid_checksum, in r5l_log_write_empty_meta_block()
1796 if (!sync_page_io(log->rdev, pos, PAGE_SIZE, page, REQ_OP_WRITE, in r5l_log_write_empty_meta_block()
1812 static void r5l_recovery_load_data(struct r5l_log *log, in r5l_recovery_load_data() argument
1818 struct mddev *mddev = log->rdev->mddev; in r5l_recovery_load_data()
1825 r5l_recovery_read_page(log, ctx, sh->dev[dd_idx].page, log_offset); in r5l_recovery_load_data()
1834 static void r5l_recovery_load_parity(struct r5l_log *log, in r5l_recovery_load_parity() argument
1840 struct mddev *mddev = log->rdev->mddev; in r5l_recovery_load_parity()
1844 r5l_recovery_read_page(log, ctx, sh->dev[sh->pd_idx].page, log_offset); in r5l_recovery_load_parity()
1851 log, ctx, sh->dev[sh->qd_idx].page, in r5l_recovery_load_parity()
1852 r5l_ring_add(log, log_offset, BLOCK_SECTORS)); in r5l_recovery_load_parity()
1985 r5l_recovery_verify_data_checksum(struct r5l_log *log, in r5l_recovery_verify_data_checksum() argument
1993 r5l_recovery_read_page(log, ctx, page, log_offset); in r5l_recovery_verify_data_checksum()
1995 checksum = crc32c_le(log->uuid_checksum, addr, PAGE_SIZE); in r5l_recovery_verify_data_checksum()
2005 r5l_recovery_verify_data_checksum_for_mb(struct r5l_log *log, in r5l_recovery_verify_data_checksum_for_mb() argument
2008 struct mddev *mddev = log->rdev->mddev; in r5l_recovery_verify_data_checksum_for_mb()
2012 sector_t log_offset = r5l_ring_add(log, ctx->pos, BLOCK_SECTORS); in r5l_recovery_verify_data_checksum_for_mb()
2027 log, ctx, page, log_offset, in r5l_recovery_verify_data_checksum_for_mb()
2032 log, ctx, page, log_offset, in r5l_recovery_verify_data_checksum_for_mb()
2037 log, ctx, page, in r5l_recovery_verify_data_checksum_for_mb()
2038 r5l_ring_add(log, log_offset, in r5l_recovery_verify_data_checksum_for_mb()
2052 log_offset = r5l_ring_add(log, log_offset, in r5l_recovery_verify_data_checksum_for_mb()
2078 r5c_recovery_analyze_meta_block(struct r5l_log *log, in r5c_recovery_analyze_meta_block() argument
2082 struct mddev *mddev = log->rdev->mddev; in r5c_recovery_analyze_meta_block()
2098 ret = r5l_recovery_verify_data_checksum_for_mb(log, ctx); in r5c_recovery_analyze_meta_block()
2106 log_offset = r5l_ring_add(log, ctx->pos, BLOCK_SECTORS); in r5c_recovery_analyze_meta_block()
2189 r5l_recovery_load_data(log, sh, ctx, payload, in r5c_recovery_analyze_meta_block()
2192 r5l_recovery_load_parity(log, sh, ctx, payload, in r5c_recovery_analyze_meta_block()
2197 log_offset = r5l_ring_add(log, log_offset, in r5c_recovery_analyze_meta_block()
2212 static void r5c_recovery_load_one_stripe(struct r5l_log *log, in r5c_recovery_load_one_stripe() argument
2243 static int r5c_recovery_flush_log(struct r5l_log *log, in r5c_recovery_flush_log() argument
2251 if (r5l_recovery_read_meta_block(log, ctx)) in r5c_recovery_flush_log()
2254 ret = r5c_recovery_analyze_meta_block(log, ctx, in r5c_recovery_flush_log()
2263 ctx->pos = r5l_ring_add(log, ctx->pos, ctx->meta_total_blocks); in r5c_recovery_flush_log()
2277 r5c_recovery_load_one_stripe(log, sh); in r5c_recovery_flush_log()
2354 r5c_recovery_rewrite_data_only_stripes(struct r5l_log *log, in r5c_recovery_rewrite_data_only_stripes() argument
2358 struct mddev *mddev = log->rdev->mddev; in r5c_recovery_rewrite_data_only_stripes()
2378 r5l_recovery_create_empty_meta_block(log, page, in r5c_recovery_rewrite_data_only_stripes()
2382 write_pos = r5l_ring_add(log, ctx->pos, BLOCK_SECTORS); in r5c_recovery_rewrite_data_only_stripes()
2398 crc32c_le(log->uuid_checksum, addr, in r5c_recovery_rewrite_data_only_stripes()
2401 sync_page_io(log->rdev, write_pos, PAGE_SIZE, in r5c_recovery_rewrite_data_only_stripes()
2403 write_pos = r5l_ring_add(log, write_pos, in r5c_recovery_rewrite_data_only_stripes()
2411 mb->checksum = cpu_to_le32(crc32c_le(log->uuid_checksum, in r5c_recovery_rewrite_data_only_stripes()
2413 sync_page_io(log->rdev, ctx->pos, PAGE_SIZE, page, in r5c_recovery_rewrite_data_only_stripes()
2416 list_add_tail(&sh->r5c, &log->stripe_in_journal_list); in r5c_recovery_rewrite_data_only_stripes()
2417 atomic_inc(&log->stripe_in_journal_count); in r5c_recovery_rewrite_data_only_stripes()
2422 log->next_checkpoint = next_checkpoint; in r5c_recovery_rewrite_data_only_stripes()
2427 static void r5c_recovery_flush_data_only_stripes(struct r5l_log *log, in r5c_recovery_flush_data_only_stripes() argument
2430 struct mddev *mddev = log->rdev->mddev; in r5c_recovery_flush_data_only_stripes()
2437 log->r5c_journal_mode = R5C_JOURNAL_MODE_WRITE_BACK; in r5c_recovery_flush_data_only_stripes()
2450 log->r5c_journal_mode = R5C_JOURNAL_MODE_WRITE_THROUGH; in r5c_recovery_flush_data_only_stripes()
2453 static int r5l_recovery_log(struct r5l_log *log) in r5l_recovery_log() argument
2455 struct mddev *mddev = log->rdev->mddev; in r5l_recovery_log()
2464 ctx->pos = log->last_checkpoint; in r5l_recovery_log()
2465 ctx->seq = log->last_cp_seq; in r5l_recovery_log()
2474 if (r5l_recovery_allocate_ra_pool(log, ctx) != 0) { in r5l_recovery_log()
2479 ret = r5c_recovery_flush_log(log, ctx); in r5l_recovery_log()
2496 log->next_checkpoint = ctx->pos; in r5l_recovery_log()
2497 r5l_log_write_empty_meta_block(log, ctx->pos, ctx->seq++); in r5l_recovery_log()
2498 ctx->pos = r5l_ring_add(log, ctx->pos, BLOCK_SECTORS); in r5l_recovery_log()
2499 } else if (r5c_recovery_rewrite_data_only_stripes(log, ctx)) { in r5l_recovery_log()
2506 log->log_start = ctx->pos; in r5l_recovery_log()
2507 log->seq = ctx->seq; in r5l_recovery_log()
2508 log->last_checkpoint = pos; in r5l_recovery_log()
2509 r5l_write_super(log, pos); in r5l_recovery_log()
2511 r5c_recovery_flush_data_only_stripes(log, ctx); in r5l_recovery_log()
2514 r5l_recovery_free_ra_pool(log, ctx); in r5l_recovery_log()
2522 static void r5l_write_super(struct r5l_log *log, sector_t cp) in r5l_write_super() argument
2524 struct mddev *mddev = log->rdev->mddev; in r5l_write_super()
2526 log->rdev->journal_tail = cp; in r5l_write_super()
2540 if (!conf || !conf->log) { in r5c_journal_mode_show()
2545 switch (conf->log->r5c_journal_mode) { in r5c_journal_mode_show()
2580 if (!conf || !conf->log) in r5c_journal_mode_set()
2588 conf->log->r5c_journal_mode = mode; in r5c_journal_mode_set()
2639 struct r5l_log *log = conf->log; in r5c_try_caching_write() local
2648 BUG_ON(!r5c_is_writeback(log)); in r5c_try_caching_write()
2698 spin_lock(&log->tree_lock); in r5c_try_caching_write()
2699 pslot = radix_tree_lookup_slot(&log->big_stripe_tree, in r5c_try_caching_write()
2703 pslot, &log->tree_lock) >> in r5c_try_caching_write()
2706 &log->big_stripe_tree, pslot, in r5c_try_caching_write()
2714 &log->big_stripe_tree, tree_index, in r5c_try_caching_write()
2717 spin_unlock(&log->tree_lock); in r5c_try_caching_write()
2722 spin_unlock(&log->tree_lock); in r5c_try_caching_write()
2806 struct r5l_log *log = conf->log; in r5c_finish_stripe_write_out() local
2813 if (!log || !test_bit(R5_InJournal, &sh->dev[sh->pd_idx].flags)) in r5c_finish_stripe_write_out()
2819 if (log->r5c_journal_mode == R5C_JOURNAL_MODE_WRITE_THROUGH) in r5c_finish_stripe_write_out()
2841 spin_lock_irq(&log->stripe_in_journal_lock); in r5c_finish_stripe_write_out()
2843 spin_unlock_irq(&log->stripe_in_journal_lock); in r5c_finish_stripe_write_out()
2846 atomic_dec(&log->stripe_in_journal_count); in r5c_finish_stripe_write_out()
2847 r5c_update_log_state(log); in r5c_finish_stripe_write_out()
2853 spin_lock(&log->tree_lock); in r5c_finish_stripe_write_out()
2854 pslot = radix_tree_lookup_slot(&log->big_stripe_tree, in r5c_finish_stripe_write_out()
2858 pslot, &log->tree_lock) >> in r5c_finish_stripe_write_out()
2861 radix_tree_delete(&log->big_stripe_tree, tree_index); in r5c_finish_stripe_write_out()
2864 &log->big_stripe_tree, pslot, in r5c_finish_stripe_write_out()
2866 spin_unlock(&log->tree_lock); in r5c_finish_stripe_write_out()
2881 r5l_append_flush_payload(log, sh->sector); in r5c_finish_stripe_write_out()
2887 int r5c_cache_data(struct r5l_log *log, struct stripe_head *sh) in r5c_cache_data() argument
2895 BUG_ON(!log); in r5c_cache_data()
2903 sh->dev[i].log_checksum = crc32c_le(log->uuid_checksum, in r5c_cache_data()
2917 mutex_lock(&log->io_mutex); in r5c_cache_data()
2923 r5l_add_no_space_stripe(log, sh); in r5c_cache_data()
2924 else if (!r5l_has_free_space(log, reserve)) { in r5c_cache_data()
2925 if (sh->log_start == log->last_checkpoint) in r5c_cache_data()
2928 r5l_add_no_space_stripe(log, sh); in r5c_cache_data()
2930 ret = r5l_log_stripe(log, sh, pages, 0); in r5c_cache_data()
2932 spin_lock_irq(&log->io_list_lock); in r5c_cache_data()
2933 list_add_tail(&sh->log_list, &log->no_mem_stripes); in r5c_cache_data()
2934 spin_unlock_irq(&log->io_list_lock); in r5c_cache_data()
2938 mutex_unlock(&log->io_mutex); in r5c_cache_data()
2945 struct r5l_log *log = conf->log; in r5c_big_stripe_cached() local
2949 if (!log) in r5c_big_stripe_cached()
2954 slot = radix_tree_lookup(&log->big_stripe_tree, tree_index); in r5c_big_stripe_cached()
2958 static int r5l_load_log(struct r5l_log *log) in r5l_load_log() argument
2960 struct md_rdev *rdev = log->rdev; in r5l_load_log()
2963 sector_t cp = log->rdev->journal_tail; in r5l_load_log()
2988 expected_crc = crc32c_le(log->uuid_checksum, mb, PAGE_SIZE); in r5l_load_log()
2999 log->last_cp_seq = prandom_u32(); in r5l_load_log()
3001 r5l_log_write_empty_meta_block(log, cp, log->last_cp_seq); in r5l_load_log()
3007 r5l_write_super(log, cp); in r5l_load_log()
3009 log->last_cp_seq = le64_to_cpu(mb->seq); in r5l_load_log()
3011 log->device_size = round_down(rdev->sectors, BLOCK_SECTORS); in r5l_load_log()
3012 log->max_free_space = log->device_size >> RECLAIM_MAX_FREE_SPACE_SHIFT; in r5l_load_log()
3013 if (log->max_free_space > RECLAIM_MAX_FREE_SPACE) in r5l_load_log()
3014 log->max_free_space = RECLAIM_MAX_FREE_SPACE; in r5l_load_log()
3015 log->last_checkpoint = cp; in r5l_load_log()
3020 log->log_start = r5l_ring_add(log, cp, BLOCK_SECTORS); in r5l_load_log()
3021 log->seq = log->last_cp_seq + 1; in r5l_load_log()
3022 log->next_checkpoint = cp; in r5l_load_log()
3024 ret = r5l_recovery_log(log); in r5l_load_log()
3026 r5c_update_log_state(log); in r5l_load_log()
3033 int r5l_start(struct r5l_log *log) in r5l_start() argument
3037 if (!log) in r5l_start()
3040 ret = r5l_load_log(log); in r5l_start()
3042 struct mddev *mddev = log->rdev->mddev; in r5l_start()
3053 struct r5l_log *log = conf->log; in r5c_update_on_rdev_error() local
3055 if (!log) in r5c_update_on_rdev_error()
3060 conf->log->r5c_journal_mode == R5C_JOURNAL_MODE_WRITE_BACK) in r5c_update_on_rdev_error()
3061 schedule_work(&log->disable_writeback_work); in r5c_update_on_rdev_error()
3067 struct r5l_log *log; in r5l_init_log() local
3092 log = kzalloc(sizeof(*log), GFP_KERNEL); in r5l_init_log()
3093 if (!log) in r5l_init_log()
3095 log->rdev = rdev; in r5l_init_log()
3097 log->need_cache_flush = test_bit(QUEUE_FLAG_WC, &q->queue_flags) != 0; in r5l_init_log()
3099 log->uuid_checksum = crc32c_le(~0, rdev->mddev->uuid, in r5l_init_log()
3102 mutex_init(&log->io_mutex); in r5l_init_log()
3104 spin_lock_init(&log->io_list_lock); in r5l_init_log()
3105 INIT_LIST_HEAD(&log->running_ios); in r5l_init_log()
3106 INIT_LIST_HEAD(&log->io_end_ios); in r5l_init_log()
3107 INIT_LIST_HEAD(&log->flushing_ios); in r5l_init_log()
3108 INIT_LIST_HEAD(&log->finished_ios); in r5l_init_log()
3109 bio_init(&log->flush_bio, NULL, 0); in r5l_init_log()
3111 log->io_kc = KMEM_CACHE(r5l_io_unit, 0); in r5l_init_log()
3112 if (!log->io_kc) in r5l_init_log()
3115 ret = mempool_init_slab_pool(&log->io_pool, R5L_POOL_SIZE, log->io_kc); in r5l_init_log()
3119 ret = bioset_init(&log->bs, R5L_POOL_SIZE, 0, BIOSET_NEED_BVECS); in r5l_init_log()
3123 ret = mempool_init_page_pool(&log->meta_pool, R5L_POOL_SIZE, 0); in r5l_init_log()
3127 spin_lock_init(&log->tree_lock); in r5l_init_log()
3128 INIT_RADIX_TREE(&log->big_stripe_tree, GFP_NOWAIT | __GFP_NOWARN); in r5l_init_log()
3130 log->reclaim_thread = md_register_thread(r5l_reclaim_thread, in r5l_init_log()
3131 log->rdev->mddev, "reclaim"); in r5l_init_log()
3132 if (!log->reclaim_thread) in r5l_init_log()
3134 log->reclaim_thread->timeout = R5C_RECLAIM_WAKEUP_INTERVAL; in r5l_init_log()
3136 init_waitqueue_head(&log->iounit_wait); in r5l_init_log()
3138 INIT_LIST_HEAD(&log->no_mem_stripes); in r5l_init_log()
3140 INIT_LIST_HEAD(&log->no_space_stripes); in r5l_init_log()
3141 spin_lock_init(&log->no_space_stripes_lock); in r5l_init_log()
3143 INIT_WORK(&log->deferred_io_work, r5l_submit_io_async); in r5l_init_log()
3144 INIT_WORK(&log->disable_writeback_work, r5c_disable_writeback_async); in r5l_init_log()
3146 log->r5c_journal_mode = R5C_JOURNAL_MODE_WRITE_THROUGH; in r5l_init_log()
3147 INIT_LIST_HEAD(&log->stripe_in_journal_list); in r5l_init_log()
3148 spin_lock_init(&log->stripe_in_journal_lock); in r5l_init_log()
3149 atomic_set(&log->stripe_in_journal_count, 0); in r5l_init_log()
3151 rcu_assign_pointer(conf->log, log); in r5l_init_log()
3157 mempool_exit(&log->meta_pool); in r5l_init_log()
3159 bioset_exit(&log->bs); in r5l_init_log()
3161 mempool_exit(&log->io_pool); in r5l_init_log()
3163 kmem_cache_destroy(log->io_kc); in r5l_init_log()
3165 kfree(log); in r5l_init_log()
3171 struct r5l_log *log = conf->log; in r5l_exit_log() local
3173 conf->log = NULL; in r5l_exit_log()
3178 flush_work(&log->disable_writeback_work); in r5l_exit_log()
3179 md_unregister_thread(&log->reclaim_thread); in r5l_exit_log()
3180 mempool_exit(&log->meta_pool); in r5l_exit_log()
3181 bioset_exit(&log->bs); in r5l_exit_log()
3182 mempool_exit(&log->io_pool); in r5l_exit_log()
3183 kmem_cache_destroy(log->io_kc); in r5l_exit_log()
3184 kfree(log); in r5l_exit_log()