37 	return bitmap->mddev ? mdname(bitmap->mddev) : "mdX";  in bmname()
144 static int read_sb_page(struct mddev *mddev, loff_t offset,  in read_sb_page()  argument
148 	sector_t sector = mddev->bitmap_info.offset + offset +  in read_sb_page()
152 	rdev_for_each(rdev, mddev) {  in read_sb_page()
166 static struct md_rdev *next_active_rdev(struct md_rdev *rdev, struct mddev *mddev)  in next_active_rdev()  argument
184 		rdev = list_entry(&mddev->disks, struct md_rdev, same_set);  in next_active_rdev()
187 		rdev_dec_pending(rdev, mddev);  in next_active_rdev()
189 	list_for_each_entry_continue_rcu(rdev, &mddev->disks, same_set) {  in next_active_rdev()
228 	struct mddev *mddev = bitmap->mddev;  in __write_sb_page()  local
230 	loff_t sboff, offset = mddev->bitmap_info.offset;  in __write_sb_page()
250 	if (mddev->external) {  in __write_sb_page()
253 		    sboff < (doff + mddev->dev_sectors + PAGE_SIZE / SECTOR_SIZE))  in __write_sb_page()
262 		if (doff + mddev->dev_sectors > sboff)  in __write_sb_page()
275 	md_super_write(mddev, rdev, sboff + ps, (int) size, page);  in __write_sb_page()
282 	struct mddev *mddev = bitmap->mddev;  in write_sb_page()  local
287 		while ((rdev = next_active_rdev(rdev, mddev)) != NULL) {  in write_sb_page()
293 	} while (wait && md_super_wait(mddev) < 0);  in write_sb_page()
440 	if (mddev_is_clustered(bitmap->mddev)) {  in filemap_write_page()
469 		md_super_wait(bitmap->mddev);  in md_bitmap_wait_writes()
478 	if (!bitmap || !bitmap->mddev) /* no bitmap for this array */  in md_bitmap_update_sb()
480 	if (bitmap->mddev->bitmap_info.external)  in md_bitmap_update_sb()
485 	sb->events = cpu_to_le64(bitmap->mddev->events);  in md_bitmap_update_sb()
486 	if (bitmap->mddev->events < bitmap->events_cleared)  in md_bitmap_update_sb()
488 		bitmap->events_cleared = bitmap->mddev->events;  in md_bitmap_update_sb()
496 	sb->daemon_sleep = cpu_to_le32(bitmap->mddev->bitmap_info.daemon_sleep/HZ);  in md_bitmap_update_sb()
497 	sb->write_behind = cpu_to_le32(bitmap->mddev->bitmap_info.max_write_behind);  in md_bitmap_update_sb()
499 	sb->sync_size = cpu_to_le64(bitmap->mddev->resync_max_sectors);  in md_bitmap_update_sb()
500 	sb->chunksize = cpu_to_le32(bitmap->mddev->bitmap_info.chunksize);  in md_bitmap_update_sb()
501 	sb->nodes = cpu_to_le32(bitmap->mddev->bitmap_info.nodes);  in md_bitmap_update_sb()
502 	sb->sectors_reserved = cpu_to_le32(bitmap->mddev->  in md_bitmap_update_sb()
569 	chunksize = bitmap->mddev->bitmap_info.chunksize;  in md_bitmap_new_disk_sb()
578 	daemon_sleep = bitmap->mddev->bitmap_info.daemon_sleep;  in md_bitmap_new_disk_sb()
584 	bitmap->mddev->bitmap_info.daemon_sleep = daemon_sleep;  in md_bitmap_new_disk_sb()
590 	write_behind = bitmap->mddev->bitmap_info.max_write_behind;  in md_bitmap_new_disk_sb()
594 	bitmap->mddev->bitmap_info.max_write_behind = write_behind;  in md_bitmap_new_disk_sb()
597 	sb->sync_size = cpu_to_le64(bitmap->mddev->resync_max_sectors);  in md_bitmap_new_disk_sb()
599 	memcpy(sb->uuid, bitmap->mddev->uuid, 16);  in md_bitmap_new_disk_sb()
603 	bitmap->events_cleared = bitmap->mddev->events;  in md_bitmap_new_disk_sb()
604 	sb->events_cleared = cpu_to_le64(bitmap->mddev->events);  in md_bitmap_new_disk_sb()
605 	bitmap->mddev->bitmap_info.nodes = 0;  in md_bitmap_new_disk_sb()
625 	if (!bitmap->storage.file && !bitmap->mddev->bitmap_info.offset) {  in md_bitmap_read_sb()
642 		sector_t bm_blocks = bitmap->mddev->resync_max_sectors;  in md_bitmap_read_sb()
645 			   (bitmap->mddev->bitmap_info.chunksize >> 9));  in md_bitmap_read_sb()
662 		err = read_sb_page(bitmap->mddev, offset, sb_page, 0,  in md_bitmap_read_sb()
702 		strscpy(bitmap->mddev->bitmap_info.cluster_name,  in md_bitmap_read_sb()
707 	sb->sync_size = cpu_to_le64(bitmap->mddev->resync_max_sectors);  in md_bitmap_read_sb()
709 	if (bitmap->mddev->persistent) {  in md_bitmap_read_sb()
714 		if (memcmp(sb->uuid, bitmap->mddev->uuid, 16)) {  in md_bitmap_read_sb()
720 		if (!nodes && (events < bitmap->mddev->events)) {  in md_bitmap_read_sb()
723 				(unsigned long long) bitmap->mddev->events);  in md_bitmap_read_sb()
739 		bitmap->mddev->bitmap_info.chunksize = chunksize;  in md_bitmap_read_sb()
740 		err = md_setup_cluster(bitmap->mddev, nodes);  in md_bitmap_read_sb()
746 		bitmap->cluster_slot = md_cluster_ops->slot_number(bitmap->mddev);  in md_bitmap_read_sb()
753 			bitmap->events_cleared = bitmap->mddev->events;  in md_bitmap_read_sb()
754 		bitmap->mddev->bitmap_info.chunksize = chunksize;  in md_bitmap_read_sb()
755 		bitmap->mddev->bitmap_info.daemon_sleep = daemon_sleep;  in md_bitmap_read_sb()
756 		bitmap->mddev->bitmap_info.max_write_behind = write_behind;  in md_bitmap_read_sb()
757 		bitmap->mddev->bitmap_info.nodes = nodes;  in md_bitmap_read_sb()
758 		if (bitmap->mddev->bitmap_info.space == 0 ||  in md_bitmap_read_sb()
759 			bitmap->mddev->bitmap_info.space > sectors_reserved)  in md_bitmap_read_sb()
760 			bitmap->mddev->bitmap_info.space = sectors_reserved;  in md_bitmap_read_sb()
764 			md_cluster_stop(bitmap->mddev);  in md_bitmap_read_sb()
955 	if (mddev_is_clustered(bitmap->mddev))  in md_bitmap_file_set_bit()
985 	if (mddev_is_clustered(bitmap->mddev))  in md_bitmap_file_clear_bit()
1046 				if (bitmap->mddev->queue)  in md_bitmap_unplug()
1047 					blk_add_trace_msg(bitmap->mddev->queue,  in md_bitmap_unplug()
1108 	struct mddev *mddev = bitmap->mddev;  in md_bitmap_init_from_disk()  local
1117 	if (!file && !mddev->bitmap_info.offset) {  in md_bitmap_init_from_disk()
1141 	if (mddev_is_clustered(mddev))  in md_bitmap_init_from_disk()
1157 			ret = read_sb_page(mddev, 0, page, i + node_offset,  in md_bitmap_init_from_disk()
1172 			if (i == 0 && !mddev->bitmap_info.external)  in md_bitmap_init_from_disk()
1269 static void mddev_set_timeout(struct mddev *mddev, unsigned long timeout,  in mddev_set_timeout()  argument
1275 	thread = rcu_dereference(mddev->thread);  in mddev_set_timeout()
1291 void md_bitmap_daemon_work(struct mddev *mddev)  in md_bitmap_daemon_work()  argument
1302 	mutex_lock(&mddev->bitmap_info.mutex);  in md_bitmap_daemon_work()
1303 	bitmap = mddev->bitmap;  in md_bitmap_daemon_work()
1305 		mutex_unlock(&mddev->bitmap_info.mutex);  in md_bitmap_daemon_work()
1309 			+ mddev->bitmap_info.daemon_sleep))  in md_bitmap_daemon_work()
1314 		mddev_set_timeout(mddev, MAX_SCHEDULE_TIMEOUT, true);  in md_bitmap_daemon_work()
1319 	if (bitmap->mddev->queue)  in md_bitmap_daemon_work()
1320 		blk_add_trace_msg(bitmap->mddev->queue,  in md_bitmap_daemon_work()
1334 	    mddev->bitmap_info.external == 0) {  in md_bitmap_daemon_work()
1410 		mddev_set_timeout(mddev, mddev->bitmap_info.daemon_sleep, true);  in md_bitmap_daemon_work()
1411 	mutex_unlock(&mddev->bitmap_info.mutex);  in md_bitmap_daemon_work()
1477 			 bw, bitmap->mddev->bitmap_info.max_write_behind);  in md_bitmap_startwrite()
1538 			 bitmap->mddev->bitmap_info.max_write_behind);  in md_bitmap_endwrite()
1553 		if (success && !bitmap->mddev->degraded &&  in md_bitmap_endwrite()
1554 		    bitmap->events_cleared < bitmap->mddev->events) {  in md_bitmap_endwrite()
1555 			bitmap->events_cleared = bitmap->mddev->events;  in md_bitmap_endwrite()
1674 	while (sector < bitmap->mddev->resync_max_sectors) {  in md_bitmap_close_sync()
1693 				  + bitmap->mddev->bitmap_info.daemon_sleep)))  in md_bitmap_cond_end_sync()
1695 	wait_event(bitmap->mddev->recovery_wait,  in md_bitmap_cond_end_sync()
1696 		   atomic_read(&bitmap->mddev->recovery_active) == 0);  in md_bitmap_cond_end_sync()
1698 	bitmap->mddev->curr_resync_completed = sector;  in md_bitmap_cond_end_sync()
1699 	set_bit(MD_SB_CHANGE_CLEAN, &bitmap->mddev->sb_flags);  in md_bitmap_cond_end_sync()
1702 	while (s < sector && s < bitmap->mddev->resync_max_sectors) {  in md_bitmap_cond_end_sync()
1707 	sysfs_notify_dirent_safe(bitmap->mddev->sysfs_completed);  in md_bitmap_cond_end_sync()
1711 void md_bitmap_sync_with_cluster(struct mddev *mddev,  in md_bitmap_sync_with_cluster()  argument
1715 	struct bitmap *bitmap = mddev->bitmap;  in md_bitmap_sync_with_cluster()
1767 		if (sec < bitmap->mddev->recovery_cp)  in md_bitmap_dirty_bits()
1772 			bitmap->mddev->recovery_cp = sec;  in md_bitmap_dirty_bits()
1779 void md_bitmap_flush(struct mddev *mddev)  in md_bitmap_flush()  argument
1781 	struct bitmap *bitmap = mddev->bitmap;  in md_bitmap_flush()
1790 	sleep = mddev->bitmap_info.daemon_sleep * 2;  in md_bitmap_flush()
1792 	md_bitmap_daemon_work(mddev);  in md_bitmap_flush()
1794 	md_bitmap_daemon_work(mddev);  in md_bitmap_flush()
1796 	md_bitmap_daemon_work(mddev);  in md_bitmap_flush()
1797 	if (mddev->bitmap_info.external)  in md_bitmap_flush()
1798 		md_super_wait(mddev);  in md_bitmap_flush()
1816 	if (mddev_is_clustered(bitmap->mddev) && bitmap->mddev->cluster_info &&  in md_bitmap_free()
1817 		bitmap->cluster_slot == md_cluster_ops->slot_number(bitmap->mddev))  in md_bitmap_free()
1818 		md_cluster_stop(bitmap->mddev);  in md_bitmap_free()
1841 void md_bitmap_wait_behind_writes(struct mddev *mddev)  in md_bitmap_wait_behind_writes()  argument
1843 	struct bitmap *bitmap = mddev->bitmap;  in md_bitmap_wait_behind_writes()
1848 			 mdname(mddev));  in md_bitmap_wait_behind_writes()
1855 void md_bitmap_destroy(struct mddev *mddev)  in md_bitmap_destroy()  argument
1857 	struct bitmap *bitmap = mddev->bitmap;  in md_bitmap_destroy()
1862 	md_bitmap_wait_behind_writes(mddev);  in md_bitmap_destroy()
1863 	if (!mddev->serialize_policy)  in md_bitmap_destroy()
1864 		mddev_destroy_serial_pool(mddev, NULL, true);  in md_bitmap_destroy()
1866 	mutex_lock(&mddev->bitmap_info.mutex);  in md_bitmap_destroy()
1867 	spin_lock(&mddev->lock);  in md_bitmap_destroy()
1868 	mddev->bitmap = NULL; /* disconnect from the md device */  in md_bitmap_destroy()
1869 	spin_unlock(&mddev->lock);  in md_bitmap_destroy()
1870 	mutex_unlock(&mddev->bitmap_info.mutex);  in md_bitmap_destroy()
1871 	mddev_set_timeout(mddev, MAX_SCHEDULE_TIMEOUT, true);  in md_bitmap_destroy()
1881 struct bitmap *md_bitmap_create(struct mddev *mddev, int slot)  in md_bitmap_create()  argument
1884 	sector_t blocks = mddev->resync_max_sectors;  in md_bitmap_create()
1885 	struct file *file = mddev->bitmap_info.file;  in md_bitmap_create()
1891 	BUG_ON(file && mddev->bitmap_info.offset);  in md_bitmap_create()
1893 	if (test_bit(MD_HAS_JOURNAL, &mddev->flags)) {  in md_bitmap_create()
1895 			  mdname(mddev));  in md_bitmap_create()
1909 	bitmap->mddev = mddev;  in md_bitmap_create()
1912 	if (mddev->kobj.sd)  in md_bitmap_create()
1913 		bm = sysfs_get_dirent(mddev->kobj.sd, "bitmap");  in md_bitmap_create()
1930 	if (!mddev->bitmap_info.external) {  in md_bitmap_create()
1935 		if (test_and_clear_bit(MD_ARRAY_FIRST_USE, &mddev->flags))  in md_bitmap_create()
1941 		if (mddev->bitmap_info.chunksize == 0 ||  in md_bitmap_create()
1942 		    mddev->bitmap_info.daemon_sleep == 0)  in md_bitmap_create()
1951 	err = md_bitmap_resize(bitmap, blocks, mddev->bitmap_info.chunksize, 1);  in md_bitmap_create()
1968 int md_bitmap_load(struct mddev *mddev)  in md_bitmap_load()  argument
1973 	struct bitmap *bitmap = mddev->bitmap;  in md_bitmap_load()
1979 	rdev_for_each(rdev, mddev)  in md_bitmap_load()
1980 		mddev_create_serial_pool(mddev, rdev, true);  in md_bitmap_load()
1982 	if (mddev_is_clustered(mddev))  in md_bitmap_load()
1983 		md_cluster_ops->load_bitmaps(mddev, mddev->bitmap_info.nodes);  in md_bitmap_load()
1990 	while (sector < mddev->resync_max_sectors) {  in md_bitmap_load()
1997 	if (mddev->degraded == 0  in md_bitmap_load()
1998 	    || bitmap->events_cleared == mddev->events)  in md_bitmap_load()
2001 		start = mddev->recovery_cp;  in md_bitmap_load()
2003 	mutex_lock(&mddev->bitmap_info.mutex);  in md_bitmap_load()
2005 	mutex_unlock(&mddev->bitmap_info.mutex);  in md_bitmap_load()
2012 	set_bit(MD_RECOVERY_NEEDED, &bitmap->mddev->recovery);  in md_bitmap_load()
2014 	mddev_set_timeout(mddev, mddev->bitmap_info.daemon_sleep, true);  in md_bitmap_load()
2015 	md_wakeup_thread(mddev->thread);  in md_bitmap_load()
2027 struct bitmap *get_bitmap_from_slot(struct mddev *mddev, int slot)  in get_bitmap_from_slot()  argument
2032 	bitmap = md_bitmap_create(mddev, slot);  in get_bitmap_from_slot()
2051 int md_bitmap_copy_from_slot(struct mddev *mddev, int slot,  in md_bitmap_copy_from_slot()  argument
2059 	bitmap = get_bitmap_from_slot(mddev, slot);  in md_bitmap_copy_from_slot()
2073 			md_bitmap_set_memory_bits(mddev->bitmap, block, 1);  in md_bitmap_copy_from_slot()
2074 			md_bitmap_file_set_bit(mddev->bitmap, block);  in md_bitmap_copy_from_slot()
2087 	md_bitmap_unplug(mddev->bitmap);  in md_bitmap_copy_from_slot()
2107 	chunk_kb = bitmap->mddev->bitmap_info.chunksize >> 10;  in md_bitmap_status()
2114 		   chunk_kb ? chunk_kb : bitmap->mddev->bitmap_info.chunksize,  in md_bitmap_status()
2157 		long space = bitmap->mddev->bitmap_info.space;  in md_bitmap_resize()
2164 			if (!bitmap->mddev->bitmap_info.external)  in md_bitmap_resize()
2167 			bitmap->mddev->bitmap_info.space = space;  in md_bitmap_resize()
2176 			if (!bitmap->mddev->bitmap_info.external)  in md_bitmap_resize()
2185 	if (bitmap->mddev->bitmap_info.offset || bitmap->mddev->bitmap_info.file)  in md_bitmap_resize()
2187 					      !bitmap->mddev->bitmap_info.external,  in md_bitmap_resize()
2188 					      mddev_is_clustered(bitmap->mddev)  in md_bitmap_resize()
2205 		bitmap->mddev->pers->quiesce(bitmap->mddev, 1);  in md_bitmap_resize()
2224 	bitmap->mddev->bitmap_info.chunksize = 1UL << (chunkshift +  in md_bitmap_resize()
2231 	if (mddev_is_clustered(bitmap->mddev)) {  in md_bitmap_resize()
2250 				bitmap->mddev->bitmap_info.chunksize =  in md_bitmap_resize()
2324 		bitmap->mddev->pers->quiesce(bitmap->mddev, 0);  in md_bitmap_resize()
2333 location_show(struct mddev *mddev, char *page)  in location_show()  argument
2336 	if (mddev->bitmap_info.file)  in location_show()
2338 	else if (mddev->bitmap_info.offset)  in location_show()
2339 		len = sprintf(page, "%+lld", (long long)mddev->bitmap_info.offset);  in location_show()
2347 location_store(struct mddev *mddev, const char *buf, size_t len)  in location_store()  argument
2351 	rv = mddev_lock(mddev);  in location_store()
2354 	if (mddev->pers) {  in location_store()
2355 		if (!mddev->pers->quiesce) {  in location_store()
2359 		if (mddev->recovery || mddev->sync_thread) {  in location_store()
2365 	if (mddev->bitmap || mddev->bitmap_info.file ||  in location_store()
2366 	    mddev->bitmap_info.offset) {  in location_store()
2372 		if (mddev->pers) {  in location_store()
2373 			mddev_suspend(mddev);  in location_store()
2374 			md_bitmap_destroy(mddev);  in location_store()
2375 			mddev_resume(mddev);  in location_store()
2377 		mddev->bitmap_info.offset = 0;  in location_store()
2378 		if (mddev->bitmap_info.file) {  in location_store()
2379 			struct file *f = mddev->bitmap_info.file;  in location_store()
2380 			mddev->bitmap_info.file = NULL;  in location_store()
2403 			if (mddev->bitmap_info.external == 0 &&  in location_store()
2404 			    mddev->major_version == 0 &&  in location_store()
2405 			    offset != mddev->bitmap_info.default_offset) {  in location_store()
2409 			mddev->bitmap_info.offset = offset;  in location_store()
2410 			if (mddev->pers) {  in location_store()
2412 				bitmap = md_bitmap_create(mddev, -1);  in location_store()
2413 				mddev_suspend(mddev);  in location_store()
2417 					mddev->bitmap = bitmap;  in location_store()
2418 					rv = md_bitmap_load(mddev);  in location_store()
2420 						mddev->bitmap_info.offset = 0;  in location_store()
2423 					md_bitmap_destroy(mddev);  in location_store()
2424 					mddev_resume(mddev);  in location_store()
2427 				mddev_resume(mddev);  in location_store()
2431 	if (!mddev->external) {  in location_store()
2435 		set_bit(MD_SB_CHANGE_DEVS, &mddev->sb_flags);  in location_store()
2436 		md_wakeup_thread(mddev->thread);  in location_store()
2440 	mddev_unlock(mddev);  in location_store()
2454 space_show(struct mddev *mddev, char *page)  in space_show()  argument
2456 	return sprintf(page, "%lu\n", mddev->bitmap_info.space);  in space_show()
2460 space_store(struct mddev *mddev, const char *buf, size_t len)  in space_store()  argument
2472 	if (mddev->bitmap &&  in space_store()
2473 	    sectors < (mddev->bitmap->storage.bytes + 511) >> 9)  in space_store()
2479 	mddev->bitmap_info.space = sectors;  in space_store()
2487 timeout_show(struct mddev *mddev, char *page)  in timeout_show()  argument
2490 	unsigned long secs = mddev->bitmap_info.daemon_sleep / HZ;  in timeout_show()
2491 	unsigned long jifs = mddev->bitmap_info.daemon_sleep % HZ;  in timeout_show()
2501 timeout_store(struct mddev *mddev, const char *buf, size_t len)  in timeout_store()  argument
2520 	mddev->bitmap_info.daemon_sleep = timeout;  in timeout_store()
2521 	mddev_set_timeout(mddev, timeout, false);  in timeout_store()
2522 	md_wakeup_thread(mddev->thread);  in timeout_store()
2531 backlog_show(struct mddev *mddev, char *page)  in backlog_show()  argument
2533 	return sprintf(page, "%lu\n", mddev->bitmap_info.max_write_behind);  in backlog_show()
2537 backlog_store(struct mddev *mddev, const char *buf, size_t len)  in backlog_store()  argument
2540 	unsigned long old_mwb = mddev->bitmap_info.max_write_behind;  in backlog_store()
2549 	rv = mddev_lock(mddev);  in backlog_store()
2557 	rdev_for_each(rdev, mddev) {  in backlog_store()
2565 				    mdname(mddev));  in backlog_store()
2566 		mddev_unlock(mddev);  in backlog_store()
2570 	mddev->bitmap_info.max_write_behind = backlog;  in backlog_store()
2571 	if (!backlog && mddev->serial_info_pool) {  in backlog_store()
2573 		if (!mddev->serialize_policy)  in backlog_store()
2574 			mddev_destroy_serial_pool(mddev, NULL, false);  in backlog_store()
2575 	} else if (backlog && !mddev->serial_info_pool) {  in backlog_store()
2577 		rdev_for_each(rdev, mddev)  in backlog_store()
2578 			mddev_create_serial_pool(mddev, rdev, false);  in backlog_store()
2581 		md_bitmap_update_sb(mddev->bitmap);  in backlog_store()
2583 	mddev_unlock(mddev);  in backlog_store()
2591 chunksize_show(struct mddev *mddev, char *page)  in chunksize_show()  argument
2593 	return sprintf(page, "%lu\n", mddev->bitmap_info.chunksize);  in chunksize_show()
2597 chunksize_store(struct mddev *mddev, const char *buf, size_t len)  in chunksize_store()  argument
2602 	if (mddev->bitmap)  in chunksize_store()
2613 	mddev->bitmap_info.chunksize = csize;  in chunksize_store()
2620 static ssize_t metadata_show(struct mddev *mddev, char *page)  in metadata_show()  argument
2622 	if (mddev_is_clustered(mddev))  in metadata_show()
2624 	return sprintf(page, "%s\n", (mddev->bitmap_info.external  in metadata_show()
2628 static ssize_t metadata_store(struct mddev *mddev, const char *buf, size_t len)  in metadata_store()  argument
2630 	if (mddev->bitmap ||  in metadata_store()
2631 	    mddev->bitmap_info.file ||  in metadata_store()
2632 	    mddev->bitmap_info.offset)  in metadata_store()
2635 		mddev->bitmap_info.external = 1;  in metadata_store()
2638 		mddev->bitmap_info.external = 0;  in metadata_store()
2647 static ssize_t can_clear_show(struct mddev *mddev, char *page)  in can_clear_show()  argument
2650 	spin_lock(&mddev->lock);  in can_clear_show()
2651 	if (mddev->bitmap)  in can_clear_show()
2652 		len = sprintf(page, "%s\n", (mddev->bitmap->need_sync ?  in can_clear_show()
2656 	spin_unlock(&mddev->lock);  in can_clear_show()
2660 static ssize_t can_clear_store(struct mddev *mddev, const char *buf, size_t len)  in can_clear_store()  argument
2662 	if (mddev->bitmap == NULL)  in can_clear_store()
2665 		mddev->bitmap->need_sync = 1;  in can_clear_store()
2667 		if (mddev->degraded)  in can_clear_store()
2669 		mddev->bitmap->need_sync = 0;  in can_clear_store()
2679 behind_writes_used_show(struct mddev *mddev, char *page)  in behind_writes_used_show()  argument
2682 	spin_lock(&mddev->lock);  in behind_writes_used_show()
2683 	if (mddev->bitmap == NULL)  in behind_writes_used_show()
2687 			      mddev->bitmap->behind_writes_used);  in behind_writes_used_show()
2688 	spin_unlock(&mddev->lock);  in behind_writes_used_show()
2693 behind_writes_used_reset(struct mddev *mddev, const char *buf, size_t len)  in behind_writes_used_reset()  argument
2695 	if (mddev->bitmap)  in behind_writes_used_reset()
2696 		mddev->bitmap->behind_writes_used = 0;  in behind_writes_used_reset()