Lines Matching refs:bitmap
35 static inline char *bmname(struct bitmap *bitmap) in bmname() argument
37 return bitmap->mddev ? mdname(bitmap->mddev) : "mdX"; in bmname()
50 static int md_bitmap_checkpage(struct bitmap_counts *bitmap, in md_bitmap_checkpage() argument
52 __releases(bitmap->lock) in md_bitmap_checkpage()
53 __acquires(bitmap->lock) in md_bitmap_checkpage()
57 WARN_ON_ONCE(page >= bitmap->pages); in md_bitmap_checkpage()
58 if (bitmap->bp[page].hijacked) /* it's hijacked, don't try to alloc */ in md_bitmap_checkpage()
61 if (bitmap->bp[page].map) /* page is already allocated, just return */ in md_bitmap_checkpage()
69 spin_unlock_irq(&bitmap->lock); in md_bitmap_checkpage()
84 spin_lock_irq(&bitmap->lock); in md_bitmap_checkpage()
93 if (!bitmap->bp[page].map) in md_bitmap_checkpage()
94 bitmap->bp[page].hijacked = 1; in md_bitmap_checkpage()
95 } else if (bitmap->bp[page].map || in md_bitmap_checkpage()
96 bitmap->bp[page].hijacked) { in md_bitmap_checkpage()
103 bitmap->bp[page].map = mappage; in md_bitmap_checkpage()
104 bitmap->missing_pages--; in md_bitmap_checkpage()
112 static void md_bitmap_checkfree(struct bitmap_counts *bitmap, unsigned long page) in md_bitmap_checkfree() argument
116 if (bitmap->bp[page].count) /* page is still busy */ in md_bitmap_checkfree()
121 if (bitmap->bp[page].hijacked) { /* page was hijacked, undo this now */ in md_bitmap_checkfree()
122 bitmap->bp[page].hijacked = 0; in md_bitmap_checkfree()
123 bitmap->bp[page].map = NULL; in md_bitmap_checkfree()
126 ptr = bitmap->bp[page].map; in md_bitmap_checkfree()
127 bitmap->bp[page].map = NULL; in md_bitmap_checkfree()
128 bitmap->missing_pages++; in md_bitmap_checkfree()
205 static int write_sb_page(struct bitmap *bitmap, struct page *page, int wait) in write_sb_page() argument
209 struct mddev *mddev = bitmap->mddev; in write_sb_page()
210 struct bitmap_storage *store = &bitmap->storage; in write_sb_page()
277 static void md_bitmap_file_kick(struct bitmap *bitmap);
281 static void write_page(struct bitmap *bitmap, struct page *page, int wait) in write_page() argument
285 if (bitmap->storage.file == NULL) { in write_page()
286 switch (write_sb_page(bitmap, page, wait)) { in write_page()
288 set_bit(BITMAP_WRITE_ERROR, &bitmap->flags); in write_page()
295 atomic_inc(&bitmap->pending_writes); in write_page()
303 wait_event(bitmap->write_wait, in write_page()
304 atomic_read(&bitmap->pending_writes)==0); in write_page()
306 if (test_bit(BITMAP_WRITE_ERROR, &bitmap->flags)) in write_page()
307 md_bitmap_file_kick(bitmap); in write_page()
312 struct bitmap *bitmap = bh->b_private; in end_bitmap_write() local
315 set_bit(BITMAP_WRITE_ERROR, &bitmap->flags); in end_bitmap_write()
316 if (atomic_dec_and_test(&bitmap->pending_writes)) in end_bitmap_write()
317 wake_up(&bitmap->write_wait); in end_bitmap_write()
345 struct bitmap *bitmap, in read_page() argument
386 bh->b_private = bitmap; in read_page()
387 atomic_inc(&bitmap->pending_writes); in read_page()
397 wait_event(bitmap->write_wait, in read_page()
398 atomic_read(&bitmap->pending_writes)==0); in read_page()
399 if (test_bit(BITMAP_WRITE_ERROR, &bitmap->flags)) in read_page()
419 static void md_bitmap_wait_writes(struct bitmap *bitmap) in md_bitmap_wait_writes() argument
421 if (bitmap->storage.file) in md_bitmap_wait_writes()
422 wait_event(bitmap->write_wait, in md_bitmap_wait_writes()
423 atomic_read(&bitmap->pending_writes)==0); in md_bitmap_wait_writes()
432 md_super_wait(bitmap->mddev); in md_bitmap_wait_writes()
437 void md_bitmap_update_sb(struct bitmap *bitmap) in md_bitmap_update_sb() argument
441 if (!bitmap || !bitmap->mddev) /* no bitmap for this array */ in md_bitmap_update_sb()
443 if (bitmap->mddev->bitmap_info.external) in md_bitmap_update_sb()
445 if (!bitmap->storage.sb_page) /* no superblock */ in md_bitmap_update_sb()
447 sb = kmap_atomic(bitmap->storage.sb_page); in md_bitmap_update_sb()
448 sb->events = cpu_to_le64(bitmap->mddev->events); in md_bitmap_update_sb()
449 if (bitmap->mddev->events < bitmap->events_cleared) in md_bitmap_update_sb()
451 bitmap->events_cleared = bitmap->mddev->events; in md_bitmap_update_sb()
452 sb->events_cleared = cpu_to_le64(bitmap->events_cleared); in md_bitmap_update_sb()
457 sb->state = cpu_to_le32(bitmap->flags & ~BIT(BITMAP_WRITE_ERROR)); in md_bitmap_update_sb()
459 sb->daemon_sleep = cpu_to_le32(bitmap->mddev->bitmap_info.daemon_sleep/HZ); in md_bitmap_update_sb()
460 sb->write_behind = cpu_to_le32(bitmap->mddev->bitmap_info.max_write_behind); in md_bitmap_update_sb()
462 sb->sync_size = cpu_to_le64(bitmap->mddev->resync_max_sectors); in md_bitmap_update_sb()
463 sb->chunksize = cpu_to_le32(bitmap->mddev->bitmap_info.chunksize); in md_bitmap_update_sb()
464 sb->nodes = cpu_to_le32(bitmap->mddev->bitmap_info.nodes); in md_bitmap_update_sb()
465 sb->sectors_reserved = cpu_to_le32(bitmap->mddev-> in md_bitmap_update_sb()
468 write_page(bitmap, bitmap->storage.sb_page, 1); in md_bitmap_update_sb()
473 void md_bitmap_print_sb(struct bitmap *bitmap) in md_bitmap_print_sb() argument
477 if (!bitmap || !bitmap->storage.sb_page) in md_bitmap_print_sb()
479 sb = kmap_atomic(bitmap->storage.sb_page); in md_bitmap_print_sb()
480 pr_debug("%s: bitmap file superblock:\n", bmname(bitmap)); in md_bitmap_print_sb()
512 static int md_bitmap_new_disk_sb(struct bitmap *bitmap) in md_bitmap_new_disk_sb() argument
517 bitmap->storage.sb_page = alloc_page(GFP_KERNEL | __GFP_ZERO); in md_bitmap_new_disk_sb()
518 if (bitmap->storage.sb_page == NULL) in md_bitmap_new_disk_sb()
520 bitmap->storage.sb_page->index = 0; in md_bitmap_new_disk_sb()
522 sb = kmap_atomic(bitmap->storage.sb_page); in md_bitmap_new_disk_sb()
527 chunksize = bitmap->mddev->bitmap_info.chunksize; in md_bitmap_new_disk_sb()
536 daemon_sleep = bitmap->mddev->bitmap_info.daemon_sleep; in md_bitmap_new_disk_sb()
542 bitmap->mddev->bitmap_info.daemon_sleep = daemon_sleep; in md_bitmap_new_disk_sb()
548 write_behind = bitmap->mddev->bitmap_info.max_write_behind; in md_bitmap_new_disk_sb()
552 bitmap->mddev->bitmap_info.max_write_behind = write_behind; in md_bitmap_new_disk_sb()
555 sb->sync_size = cpu_to_le64(bitmap->mddev->resync_max_sectors); in md_bitmap_new_disk_sb()
557 memcpy(sb->uuid, bitmap->mddev->uuid, 16); in md_bitmap_new_disk_sb()
559 set_bit(BITMAP_STALE, &bitmap->flags); in md_bitmap_new_disk_sb()
560 sb->state = cpu_to_le32(bitmap->flags); in md_bitmap_new_disk_sb()
561 bitmap->events_cleared = bitmap->mddev->events; in md_bitmap_new_disk_sb()
562 sb->events_cleared = cpu_to_le64(bitmap->mddev->events); in md_bitmap_new_disk_sb()
563 bitmap->mddev->bitmap_info.nodes = 0; in md_bitmap_new_disk_sb()
571 static int md_bitmap_read_sb(struct bitmap *bitmap) in md_bitmap_read_sb() argument
581 loff_t offset = bitmap->mddev->bitmap_info.offset; in md_bitmap_read_sb()
583 if (!bitmap->storage.file && !bitmap->mddev->bitmap_info.offset) { in md_bitmap_read_sb()
587 set_bit(BITMAP_STALE, &bitmap->flags); in md_bitmap_read_sb()
595 bitmap->storage.sb_page = sb_page; in md_bitmap_read_sb()
599 if (bitmap->cluster_slot >= 0) { in md_bitmap_read_sb()
600 sector_t bm_blocks = bitmap->mddev->resync_max_sectors; in md_bitmap_read_sb()
603 (bitmap->mddev->bitmap_info.chunksize >> 9)); in md_bitmap_read_sb()
608 offset = bitmap->mddev->bitmap_info.offset + (bitmap->cluster_slot * (bm_blocks << 3)); in md_bitmap_read_sb()
610 bitmap->cluster_slot, offset); in md_bitmap_read_sb()
613 if (bitmap->storage.file) { in md_bitmap_read_sb()
614 loff_t isize = i_size_read(bitmap->storage.file->f_mapping->host); in md_bitmap_read_sb()
617 err = read_page(bitmap->storage.file, 0, in md_bitmap_read_sb()
618 bitmap, bytes, sb_page); in md_bitmap_read_sb()
620 err = read_sb_page(bitmap->mddev, in md_bitmap_read_sb()
652 bmname(bitmap), reason); in md_bitmap_read_sb()
662 strlcpy(bitmap->mddev->bitmap_info.cluster_name, in md_bitmap_read_sb()
667 sb->sync_size = cpu_to_le64(bitmap->mddev->resync_max_sectors); in md_bitmap_read_sb()
669 if (bitmap->mddev->persistent) { in md_bitmap_read_sb()
674 if (memcmp(sb->uuid, bitmap->mddev->uuid, 16)) { in md_bitmap_read_sb()
676 bmname(bitmap)); in md_bitmap_read_sb()
680 if (!nodes && (events < bitmap->mddev->events)) { in md_bitmap_read_sb()
682 bmname(bitmap), events, in md_bitmap_read_sb()
683 (unsigned long long) bitmap->mddev->events); in md_bitmap_read_sb()
684 set_bit(BITMAP_STALE, &bitmap->flags); in md_bitmap_read_sb()
689 bitmap->flags |= le32_to_cpu(sb->state); in md_bitmap_read_sb()
691 set_bit(BITMAP_HOSTENDIAN, &bitmap->flags); in md_bitmap_read_sb()
692 bitmap->events_cleared = le64_to_cpu(sb->events_cleared); in md_bitmap_read_sb()
693 strlcpy(bitmap->mddev->bitmap_info.cluster_name, sb->cluster_name, 64); in md_bitmap_read_sb()
698 if (err == 0 && nodes && (bitmap->cluster_slot < 0)) { in md_bitmap_read_sb()
700 bitmap->mddev->bitmap_info.chunksize = chunksize; in md_bitmap_read_sb()
701 err = md_setup_cluster(bitmap->mddev, nodes); in md_bitmap_read_sb()
704 bmname(bitmap), err); in md_bitmap_read_sb()
707 bitmap->cluster_slot = md_cluster_ops->slot_number(bitmap->mddev); in md_bitmap_read_sb()
713 if (test_bit(BITMAP_STALE, &bitmap->flags)) in md_bitmap_read_sb()
714 bitmap->events_cleared = bitmap->mddev->events; in md_bitmap_read_sb()
715 bitmap->mddev->bitmap_info.chunksize = chunksize; in md_bitmap_read_sb()
716 bitmap->mddev->bitmap_info.daemon_sleep = daemon_sleep; in md_bitmap_read_sb()
717 bitmap->mddev->bitmap_info.max_write_behind = write_behind; in md_bitmap_read_sb()
718 bitmap->mddev->bitmap_info.nodes = nodes; in md_bitmap_read_sb()
719 if (bitmap->mddev->bitmap_info.space == 0 || in md_bitmap_read_sb()
720 bitmap->mddev->bitmap_info.space > sectors_reserved) in md_bitmap_read_sb()
721 bitmap->mddev->bitmap_info.space = sectors_reserved; in md_bitmap_read_sb()
723 md_bitmap_print_sb(bitmap); in md_bitmap_read_sb()
724 if (bitmap->cluster_slot < 0) in md_bitmap_read_sb()
725 md_cluster_stop(bitmap->mddev); in md_bitmap_read_sb()
858 static void md_bitmap_file_kick(struct bitmap *bitmap) in md_bitmap_file_kick() argument
862 if (!test_and_set_bit(BITMAP_STALE, &bitmap->flags)) { in md_bitmap_file_kick()
863 md_bitmap_update_sb(bitmap); in md_bitmap_file_kick()
865 if (bitmap->storage.file) { in md_bitmap_file_kick()
868 ptr = file_path(bitmap->storage.file, in md_bitmap_file_kick()
872 bmname(bitmap), IS_ERR(ptr) ? "" : ptr); in md_bitmap_file_kick()
877 bmname(bitmap)); in md_bitmap_file_kick()
888 static inline void set_page_attr(struct bitmap *bitmap, int pnum, in set_page_attr() argument
891 set_bit((pnum<<2) + attr, bitmap->storage.filemap_attr); in set_page_attr()
894 static inline void clear_page_attr(struct bitmap *bitmap, int pnum, in clear_page_attr() argument
897 clear_bit((pnum<<2) + attr, bitmap->storage.filemap_attr); in clear_page_attr()
900 static inline int test_page_attr(struct bitmap *bitmap, int pnum, in test_page_attr() argument
903 return test_bit((pnum<<2) + attr, bitmap->storage.filemap_attr); in test_page_attr()
906 static inline int test_and_clear_page_attr(struct bitmap *bitmap, int pnum, in test_and_clear_page_attr() argument
910 bitmap->storage.filemap_attr); in test_and_clear_page_attr()
919 static void md_bitmap_file_set_bit(struct bitmap *bitmap, sector_t block) in md_bitmap_file_set_bit() argument
924 unsigned long chunk = block >> bitmap->counts.chunkshift; in md_bitmap_file_set_bit()
925 struct bitmap_storage *store = &bitmap->storage; in md_bitmap_file_set_bit()
928 if (mddev_is_clustered(bitmap->mddev)) in md_bitmap_file_set_bit()
929 node_offset = bitmap->cluster_slot * store->file_pages; in md_bitmap_file_set_bit()
931 page = filemap_get_page(&bitmap->storage, chunk); in md_bitmap_file_set_bit()
934 bit = file_page_offset(&bitmap->storage, chunk); in md_bitmap_file_set_bit()
938 if (test_bit(BITMAP_HOSTENDIAN, &bitmap->flags)) in md_bitmap_file_set_bit()
945 set_page_attr(bitmap, page->index - node_offset, BITMAP_PAGE_DIRTY); in md_bitmap_file_set_bit()
948 static void md_bitmap_file_clear_bit(struct bitmap *bitmap, sector_t block) in md_bitmap_file_clear_bit() argument
953 unsigned long chunk = block >> bitmap->counts.chunkshift; in md_bitmap_file_clear_bit()
954 struct bitmap_storage *store = &bitmap->storage; in md_bitmap_file_clear_bit()
957 if (mddev_is_clustered(bitmap->mddev)) in md_bitmap_file_clear_bit()
958 node_offset = bitmap->cluster_slot * store->file_pages; in md_bitmap_file_clear_bit()
960 page = filemap_get_page(&bitmap->storage, chunk); in md_bitmap_file_clear_bit()
963 bit = file_page_offset(&bitmap->storage, chunk); in md_bitmap_file_clear_bit()
965 if (test_bit(BITMAP_HOSTENDIAN, &bitmap->flags)) in md_bitmap_file_clear_bit()
970 if (!test_page_attr(bitmap, page->index - node_offset, BITMAP_PAGE_NEEDWRITE)) { in md_bitmap_file_clear_bit()
971 set_page_attr(bitmap, page->index - node_offset, BITMAP_PAGE_PENDING); in md_bitmap_file_clear_bit()
972 bitmap->allclean = 0; in md_bitmap_file_clear_bit()
976 static int md_bitmap_file_test_bit(struct bitmap *bitmap, sector_t block) in md_bitmap_file_test_bit() argument
981 unsigned long chunk = block >> bitmap->counts.chunkshift; in md_bitmap_file_test_bit()
984 page = filemap_get_page(&bitmap->storage, chunk); in md_bitmap_file_test_bit()
987 bit = file_page_offset(&bitmap->storage, chunk); in md_bitmap_file_test_bit()
989 if (test_bit(BITMAP_HOSTENDIAN, &bitmap->flags)) in md_bitmap_file_test_bit()
1001 void md_bitmap_unplug(struct bitmap *bitmap) in md_bitmap_unplug() argument
1007 if (!bitmap || !bitmap->storage.filemap || in md_bitmap_unplug()
1008 test_bit(BITMAP_STALE, &bitmap->flags)) in md_bitmap_unplug()
1013 for (i = 0; i < bitmap->storage.file_pages; i++) { in md_bitmap_unplug()
1014 dirty = test_and_clear_page_attr(bitmap, i, BITMAP_PAGE_DIRTY); in md_bitmap_unplug()
1015 need_write = test_and_clear_page_attr(bitmap, i, in md_bitmap_unplug()
1019 md_bitmap_wait_writes(bitmap); in md_bitmap_unplug()
1020 if (bitmap->mddev->queue) in md_bitmap_unplug()
1021 blk_add_trace_msg(bitmap->mddev->queue, in md_bitmap_unplug()
1024 clear_page_attr(bitmap, i, BITMAP_PAGE_PENDING); in md_bitmap_unplug()
1025 write_page(bitmap, bitmap->storage.filemap[i], 0); in md_bitmap_unplug()
1030 md_bitmap_wait_writes(bitmap); in md_bitmap_unplug()
1032 if (test_bit(BITMAP_WRITE_ERROR, &bitmap->flags)) in md_bitmap_unplug()
1033 md_bitmap_file_kick(bitmap); in md_bitmap_unplug()
1037 static void md_bitmap_set_memory_bits(struct bitmap *bitmap, sector_t offset, int needed);
1049 static int md_bitmap_init_from_disk(struct bitmap *bitmap, sector_t start) in md_bitmap_init_from_disk() argument
1059 struct bitmap_storage *store = &bitmap->storage; in md_bitmap_init_from_disk()
1061 chunks = bitmap->counts.chunks; in md_bitmap_init_from_disk()
1064 if (!file && !bitmap->mddev->bitmap_info.offset) { in md_bitmap_init_from_disk()
1070 int needed = ((sector_t)(i+1) << (bitmap->counts.chunkshift) in md_bitmap_init_from_disk()
1072 md_bitmap_set_memory_bits(bitmap, in md_bitmap_init_from_disk()
1073 (sector_t)i << bitmap->counts.chunkshift, in md_bitmap_init_from_disk()
1079 outofdate = test_bit(BITMAP_STALE, &bitmap->flags); in md_bitmap_init_from_disk()
1081 pr_warn("%s: bitmap file is out of date, doing full recovery\n", bmname(bitmap)); in md_bitmap_init_from_disk()
1085 bmname(bitmap), in md_bitmap_init_from_disk()
1093 if (!bitmap->mddev->bitmap_info.external) in md_bitmap_init_from_disk()
1096 if (mddev_is_clustered(bitmap->mddev)) in md_bitmap_init_from_disk()
1097 node_offset = bitmap->cluster_slot * (DIV_ROUND_UP(store->bytes, PAGE_SIZE)); in md_bitmap_init_from_disk()
1101 index = file_page_index(&bitmap->storage, i); in md_bitmap_init_from_disk()
1102 bit = file_page_offset(&bitmap->storage, i); in md_bitmap_init_from_disk()
1112 ret = read_page(file, index, bitmap, in md_bitmap_init_from_disk()
1116 bitmap->mddev, in md_bitmap_init_from_disk()
1117 bitmap->mddev->bitmap_info.offset, in md_bitmap_init_from_disk()
1135 write_page(bitmap, page, 1); in md_bitmap_init_from_disk()
1139 &bitmap->flags)) in md_bitmap_init_from_disk()
1144 if (test_bit(BITMAP_HOSTENDIAN, &bitmap->flags)) in md_bitmap_init_from_disk()
1151 int needed = ((sector_t)(i+1) << bitmap->counts.chunkshift in md_bitmap_init_from_disk()
1153 md_bitmap_set_memory_bits(bitmap, in md_bitmap_init_from_disk()
1154 (sector_t)i << bitmap->counts.chunkshift, in md_bitmap_init_from_disk()
1162 bmname(bitmap), store->file_pages, in md_bitmap_init_from_disk()
1169 bmname(bitmap), ret); in md_bitmap_init_from_disk()
1173 void md_bitmap_write_all(struct bitmap *bitmap) in md_bitmap_write_all() argument
1180 if (!bitmap || !bitmap->storage.filemap) in md_bitmap_write_all()
1182 if (bitmap->storage.file) in md_bitmap_write_all()
1186 for (i = 0; i < bitmap->storage.file_pages; i++) in md_bitmap_write_all()
1187 set_page_attr(bitmap, i, in md_bitmap_write_all()
1189 bitmap->allclean = 0; in md_bitmap_write_all()
1192 static void md_bitmap_count_page(struct bitmap_counts *bitmap, in md_bitmap_count_page() argument
1195 sector_t chunk = offset >> bitmap->chunkshift; in md_bitmap_count_page()
1197 bitmap->bp[page].count += inc; in md_bitmap_count_page()
1198 md_bitmap_checkfree(bitmap, page); in md_bitmap_count_page()
1201 static void md_bitmap_set_pending(struct bitmap_counts *bitmap, sector_t offset) in md_bitmap_set_pending() argument
1203 sector_t chunk = offset >> bitmap->chunkshift; in md_bitmap_set_pending()
1205 struct bitmap_page *bp = &bitmap->bp[page]; in md_bitmap_set_pending()
1211 static bitmap_counter_t *md_bitmap_get_counter(struct bitmap_counts *bitmap,
1222 struct bitmap *bitmap; in md_bitmap_daemon_work() local
1232 bitmap = mddev->bitmap; in md_bitmap_daemon_work()
1233 if (bitmap == NULL) { in md_bitmap_daemon_work()
1237 if (time_before(jiffies, bitmap->daemon_lastrun in md_bitmap_daemon_work()
1241 bitmap->daemon_lastrun = jiffies; in md_bitmap_daemon_work()
1242 if (bitmap->allclean) { in md_bitmap_daemon_work()
1246 bitmap->allclean = 1; in md_bitmap_daemon_work()
1248 if (bitmap->mddev->queue) in md_bitmap_daemon_work()
1249 blk_add_trace_msg(bitmap->mddev->queue, in md_bitmap_daemon_work()
1256 for (j = 0; j < bitmap->storage.file_pages; j++) in md_bitmap_daemon_work()
1257 if (test_and_clear_page_attr(bitmap, j, in md_bitmap_daemon_work()
1259 set_page_attr(bitmap, j, in md_bitmap_daemon_work()
1262 if (bitmap->need_sync && in md_bitmap_daemon_work()
1267 bitmap->need_sync = 0; in md_bitmap_daemon_work()
1268 if (bitmap->storage.filemap) { in md_bitmap_daemon_work()
1269 sb = kmap_atomic(bitmap->storage.sb_page); in md_bitmap_daemon_work()
1271 cpu_to_le64(bitmap->events_cleared); in md_bitmap_daemon_work()
1273 set_page_attr(bitmap, 0, in md_bitmap_daemon_work()
1280 counts = &bitmap->counts; in md_bitmap_daemon_work()
1301 if (*bmc == 1 && !bitmap->need_sync) { in md_bitmap_daemon_work()
1305 md_bitmap_file_clear_bit(bitmap, block); in md_bitmap_daemon_work()
1309 bitmap->allclean = 0; in md_bitmap_daemon_work()
1314 md_bitmap_wait_writes(bitmap); in md_bitmap_daemon_work()
1324 j < bitmap->storage.file_pages in md_bitmap_daemon_work()
1325 && !test_bit(BITMAP_STALE, &bitmap->flags); in md_bitmap_daemon_work()
1327 if (test_page_attr(bitmap, j, in md_bitmap_daemon_work()
1331 if (bitmap->storage.filemap && in md_bitmap_daemon_work()
1332 test_and_clear_page_attr(bitmap, j, in md_bitmap_daemon_work()
1334 write_page(bitmap, bitmap->storage.filemap[j], 0); in md_bitmap_daemon_work()
1339 if (bitmap->allclean == 0) in md_bitmap_daemon_work()
1345 static bitmap_counter_t *md_bitmap_get_counter(struct bitmap_counts *bitmap, in md_bitmap_get_counter() argument
1348 __releases(bitmap->lock) in md_bitmap_get_counter()
1349 __acquires(bitmap->lock) in md_bitmap_get_counter()
1355 sector_t chunk = offset >> bitmap->chunkshift; in md_bitmap_get_counter()
1361 if (page >= bitmap->pages) { in md_bitmap_get_counter()
1369 err = md_bitmap_checkpage(bitmap, page, create, 0); in md_bitmap_get_counter()
1371 if (bitmap->bp[page].hijacked || in md_bitmap_get_counter()
1372 bitmap->bp[page].map == NULL) in md_bitmap_get_counter()
1373 csize = ((sector_t)1) << (bitmap->chunkshift + in md_bitmap_get_counter()
1376 csize = ((sector_t)1) << bitmap->chunkshift; in md_bitmap_get_counter()
1384 if (bitmap->bp[page].hijacked) { /* hijacked pointer */ in md_bitmap_get_counter()
1389 &bitmap->bp[page].map)[hi]; in md_bitmap_get_counter()
1392 &(bitmap->bp[page].map[pageoff]); in md_bitmap_get_counter()
1395 int md_bitmap_startwrite(struct bitmap *bitmap, sector_t offset, unsigned long sectors, int behind) in md_bitmap_startwrite() argument
1397 if (!bitmap) in md_bitmap_startwrite()
1402 atomic_inc(&bitmap->behind_writes); in md_bitmap_startwrite()
1403 bw = atomic_read(&bitmap->behind_writes); in md_bitmap_startwrite()
1404 if (bw > bitmap->behind_writes_used) in md_bitmap_startwrite()
1405 bitmap->behind_writes_used = bw; in md_bitmap_startwrite()
1408 bw, bitmap->mddev->bitmap_info.max_write_behind); in md_bitmap_startwrite()
1415 spin_lock_irq(&bitmap->counts.lock); in md_bitmap_startwrite()
1416 bmc = md_bitmap_get_counter(&bitmap->counts, offset, &blocks, 1); in md_bitmap_startwrite()
1418 spin_unlock_irq(&bitmap->counts.lock); in md_bitmap_startwrite()
1428 prepare_to_wait(&bitmap->overflow_wait, &__wait, in md_bitmap_startwrite()
1430 spin_unlock_irq(&bitmap->counts.lock); in md_bitmap_startwrite()
1432 finish_wait(&bitmap->overflow_wait, &__wait); in md_bitmap_startwrite()
1438 md_bitmap_file_set_bit(bitmap, offset); in md_bitmap_startwrite()
1439 md_bitmap_count_page(&bitmap->counts, offset, 1); in md_bitmap_startwrite()
1447 spin_unlock_irq(&bitmap->counts.lock); in md_bitmap_startwrite()
1459 void md_bitmap_endwrite(struct bitmap *bitmap, sector_t offset, in md_bitmap_endwrite() argument
1462 if (!bitmap) in md_bitmap_endwrite()
1465 if (atomic_dec_and_test(&bitmap->behind_writes)) in md_bitmap_endwrite()
1466 wake_up(&bitmap->behind_wait); in md_bitmap_endwrite()
1468 atomic_read(&bitmap->behind_writes), in md_bitmap_endwrite()
1469 bitmap->mddev->bitmap_info.max_write_behind); in md_bitmap_endwrite()
1477 spin_lock_irqsave(&bitmap->counts.lock, flags); in md_bitmap_endwrite()
1478 bmc = md_bitmap_get_counter(&bitmap->counts, offset, &blocks, 0); in md_bitmap_endwrite()
1480 spin_unlock_irqrestore(&bitmap->counts.lock, flags); in md_bitmap_endwrite()
1484 if (success && !bitmap->mddev->degraded && in md_bitmap_endwrite()
1485 bitmap->events_cleared < bitmap->mddev->events) { in md_bitmap_endwrite()
1486 bitmap->events_cleared = bitmap->mddev->events; in md_bitmap_endwrite()
1487 bitmap->need_sync = 1; in md_bitmap_endwrite()
1488 sysfs_notify_dirent_safe(bitmap->sysfs_can_clear); in md_bitmap_endwrite()
1495 wake_up(&bitmap->overflow_wait); in md_bitmap_endwrite()
1499 md_bitmap_set_pending(&bitmap->counts, offset); in md_bitmap_endwrite()
1500 bitmap->allclean = 0; in md_bitmap_endwrite()
1502 spin_unlock_irqrestore(&bitmap->counts.lock, flags); in md_bitmap_endwrite()
1512 static int __bitmap_start_sync(struct bitmap *bitmap, sector_t offset, sector_t *blocks, in __bitmap_start_sync() argument
1517 if (bitmap == NULL) {/* FIXME or bitmap set as 'failed' */ in __bitmap_start_sync()
1521 spin_lock_irq(&bitmap->counts.lock); in __bitmap_start_sync()
1522 bmc = md_bitmap_get_counter(&bitmap->counts, offset, blocks, 0); in __bitmap_start_sync()
1536 spin_unlock_irq(&bitmap->counts.lock); in __bitmap_start_sync()
1540 int md_bitmap_start_sync(struct bitmap *bitmap, sector_t offset, sector_t *blocks, in md_bitmap_start_sync() argument
1555 rv |= __bitmap_start_sync(bitmap, offset, in md_bitmap_start_sync()
1564 void md_bitmap_end_sync(struct bitmap *bitmap, sector_t offset, sector_t *blocks, int aborted) in md_bitmap_end_sync() argument
1569 if (bitmap == NULL) { in md_bitmap_end_sync()
1573 spin_lock_irqsave(&bitmap->counts.lock, flags); in md_bitmap_end_sync()
1574 bmc = md_bitmap_get_counter(&bitmap->counts, offset, blocks, 0); in md_bitmap_end_sync()
1585 md_bitmap_set_pending(&bitmap->counts, offset); in md_bitmap_end_sync()
1586 bitmap->allclean = 0; in md_bitmap_end_sync()
1591 spin_unlock_irqrestore(&bitmap->counts.lock, flags); in md_bitmap_end_sync()
1595 void md_bitmap_close_sync(struct bitmap *bitmap) in md_bitmap_close_sync() argument
1603 if (!bitmap) in md_bitmap_close_sync()
1605 while (sector < bitmap->mddev->resync_max_sectors) { in md_bitmap_close_sync()
1606 md_bitmap_end_sync(bitmap, sector, &blocks, 0); in md_bitmap_close_sync()
1612 void md_bitmap_cond_end_sync(struct bitmap *bitmap, sector_t sector, bool force) in md_bitmap_cond_end_sync() argument
1617 if (!bitmap) in md_bitmap_cond_end_sync()
1620 bitmap->last_end_sync = jiffies; in md_bitmap_cond_end_sync()
1623 if (!force && time_before(jiffies, (bitmap->last_end_sync in md_bitmap_cond_end_sync()
1624 + bitmap->mddev->bitmap_info.daemon_sleep))) in md_bitmap_cond_end_sync()
1626 wait_event(bitmap->mddev->recovery_wait, in md_bitmap_cond_end_sync()
1627 atomic_read(&bitmap->mddev->recovery_active) == 0); in md_bitmap_cond_end_sync()
1629 bitmap->mddev->curr_resync_completed = sector; in md_bitmap_cond_end_sync()
1630 set_bit(MD_SB_CHANGE_CLEAN, &bitmap->mddev->sb_flags); in md_bitmap_cond_end_sync()
1631 sector &= ~((1ULL << bitmap->counts.chunkshift) - 1); in md_bitmap_cond_end_sync()
1633 while (s < sector && s < bitmap->mddev->resync_max_sectors) { in md_bitmap_cond_end_sync()
1634 md_bitmap_end_sync(bitmap, s, &blocks, 0); in md_bitmap_cond_end_sync()
1637 bitmap->last_end_sync = jiffies; in md_bitmap_cond_end_sync()
1638 sysfs_notify_dirent_safe(bitmap->mddev->sysfs_completed); in md_bitmap_cond_end_sync()
1646 struct bitmap *bitmap = mddev->bitmap; in md_bitmap_sync_with_cluster() local
1650 md_bitmap_end_sync(bitmap, sector, &blocks, 0); in md_bitmap_sync_with_cluster()
1656 md_bitmap_start_sync(bitmap, sector, &blocks, 0); in md_bitmap_sync_with_cluster()
1663 static void md_bitmap_set_memory_bits(struct bitmap *bitmap, sector_t offset, int needed) in md_bitmap_set_memory_bits() argument
1672 spin_lock_irq(&bitmap->counts.lock); in md_bitmap_set_memory_bits()
1673 bmc = md_bitmap_get_counter(&bitmap->counts, offset, &secs, 1); in md_bitmap_set_memory_bits()
1675 spin_unlock_irq(&bitmap->counts.lock); in md_bitmap_set_memory_bits()
1680 md_bitmap_count_page(&bitmap->counts, offset, 1); in md_bitmap_set_memory_bits()
1681 md_bitmap_set_pending(&bitmap->counts, offset); in md_bitmap_set_memory_bits()
1682 bitmap->allclean = 0; in md_bitmap_set_memory_bits()
1686 spin_unlock_irq(&bitmap->counts.lock); in md_bitmap_set_memory_bits()
1690 void md_bitmap_dirty_bits(struct bitmap *bitmap, unsigned long s, unsigned long e) in md_bitmap_dirty_bits() argument
1695 sector_t sec = (sector_t)chunk << bitmap->counts.chunkshift; in md_bitmap_dirty_bits()
1696 md_bitmap_set_memory_bits(bitmap, sec, 1); in md_bitmap_dirty_bits()
1697 md_bitmap_file_set_bit(bitmap, sec); in md_bitmap_dirty_bits()
1698 if (sec < bitmap->mddev->recovery_cp) in md_bitmap_dirty_bits()
1703 bitmap->mddev->recovery_cp = sec; in md_bitmap_dirty_bits()
1712 struct bitmap *bitmap = mddev->bitmap; in md_bitmap_flush() local
1715 if (!bitmap) /* there was no bitmap */ in md_bitmap_flush()
1722 bitmap->daemon_lastrun -= sleep; in md_bitmap_flush()
1724 bitmap->daemon_lastrun -= sleep; in md_bitmap_flush()
1726 bitmap->daemon_lastrun -= sleep; in md_bitmap_flush()
1730 md_bitmap_update_sb(bitmap); in md_bitmap_flush()
1736 void md_bitmap_free(struct bitmap *bitmap) in md_bitmap_free() argument
1741 if (!bitmap) /* there was no bitmap */ in md_bitmap_free()
1744 if (bitmap->sysfs_can_clear) in md_bitmap_free()
1745 sysfs_put(bitmap->sysfs_can_clear); in md_bitmap_free()
1747 if (mddev_is_clustered(bitmap->mddev) && bitmap->mddev->cluster_info && in md_bitmap_free()
1748 bitmap->cluster_slot == md_cluster_ops->slot_number(bitmap->mddev)) in md_bitmap_free()
1749 md_cluster_stop(bitmap->mddev); in md_bitmap_free()
1752 wait_event(bitmap->write_wait, in md_bitmap_free()
1753 atomic_read(&bitmap->pending_writes) == 0); in md_bitmap_free()
1756 md_bitmap_file_unmap(&bitmap->storage); in md_bitmap_free()
1758 bp = bitmap->counts.bp; in md_bitmap_free()
1759 pages = bitmap->counts.pages; in md_bitmap_free()
1768 kfree(bitmap); in md_bitmap_free()
1774 struct bitmap *bitmap = mddev->bitmap; in md_bitmap_wait_behind_writes() local
1777 if (bitmap && atomic_read(&bitmap->behind_writes) > 0) { in md_bitmap_wait_behind_writes()
1781 wait_event(bitmap->behind_wait, in md_bitmap_wait_behind_writes()
1782 atomic_read(&bitmap->behind_writes) == 0); in md_bitmap_wait_behind_writes()
1788 struct bitmap *bitmap = mddev->bitmap; in md_bitmap_destroy() local
1790 if (!bitmap) /* there was no bitmap */ in md_bitmap_destroy()
1799 mddev->bitmap = NULL; /* disconnect from the md device */ in md_bitmap_destroy()
1805 md_bitmap_free(bitmap); in md_bitmap_destroy()
1813 struct bitmap *md_bitmap_create(struct mddev *mddev, int slot) in md_bitmap_create()
1815 struct bitmap *bitmap; in md_bitmap_create() local
1831 bitmap = kzalloc(sizeof(*bitmap), GFP_KERNEL); in md_bitmap_create()
1832 if (!bitmap) in md_bitmap_create()
1835 spin_lock_init(&bitmap->counts.lock); in md_bitmap_create()
1836 atomic_set(&bitmap->pending_writes, 0); in md_bitmap_create()
1837 init_waitqueue_head(&bitmap->write_wait); in md_bitmap_create()
1838 init_waitqueue_head(&bitmap->overflow_wait); in md_bitmap_create()
1839 init_waitqueue_head(&bitmap->behind_wait); in md_bitmap_create()
1841 bitmap->mddev = mddev; in md_bitmap_create()
1842 bitmap->cluster_slot = slot; in md_bitmap_create()
1847 bitmap->sysfs_can_clear = sysfs_get_dirent(bm, "can_clear"); in md_bitmap_create()
1850 bitmap->sysfs_can_clear = NULL; in md_bitmap_create()
1852 bitmap->storage.file = file; in md_bitmap_create()
1868 err = md_bitmap_new_disk_sb(bitmap); in md_bitmap_create()
1870 err = md_bitmap_read_sb(bitmap); in md_bitmap_create()
1882 bitmap->daemon_lastrun = jiffies; in md_bitmap_create()
1883 err = md_bitmap_resize(bitmap, blocks, mddev->bitmap_info.chunksize, 1); in md_bitmap_create()
1888 bitmap->counts.pages, bmname(bitmap)); in md_bitmap_create()
1890 err = test_bit(BITMAP_WRITE_ERROR, &bitmap->flags) ? -EIO : 0; in md_bitmap_create()
1894 return bitmap; in md_bitmap_create()
1896 md_bitmap_free(bitmap); in md_bitmap_create()
1905 struct bitmap *bitmap = mddev->bitmap; in md_bitmap_load() local
1908 if (!bitmap) in md_bitmap_load()
1924 md_bitmap_start_sync(bitmap, sector, &blocks, 0); in md_bitmap_load()
1927 md_bitmap_close_sync(bitmap); in md_bitmap_load()
1930 || bitmap->events_cleared == mddev->events) in md_bitmap_load()
1936 err = md_bitmap_init_from_disk(bitmap, start); in md_bitmap_load()
1941 clear_bit(BITMAP_STALE, &bitmap->flags); in md_bitmap_load()
1944 set_bit(MD_RECOVERY_NEEDED, &bitmap->mddev->recovery); in md_bitmap_load()
1949 md_bitmap_update_sb(bitmap); in md_bitmap_load()
1951 if (test_bit(BITMAP_WRITE_ERROR, &bitmap->flags)) in md_bitmap_load()
1959 struct bitmap *get_bitmap_from_slot(struct mddev *mddev, int slot) in get_bitmap_from_slot()
1962 struct bitmap *bitmap; in get_bitmap_from_slot() local
1964 bitmap = md_bitmap_create(mddev, slot); in get_bitmap_from_slot()
1965 if (IS_ERR(bitmap)) { in get_bitmap_from_slot()
1966 rv = PTR_ERR(bitmap); in get_bitmap_from_slot()
1970 rv = md_bitmap_init_from_disk(bitmap, 0); in get_bitmap_from_slot()
1972 md_bitmap_free(bitmap); in get_bitmap_from_slot()
1976 return bitmap; in get_bitmap_from_slot()
1989 struct bitmap *bitmap; in md_bitmap_copy_from_slot() local
1991 bitmap = get_bitmap_from_slot(mddev, slot); in md_bitmap_copy_from_slot()
1992 if (IS_ERR(bitmap)) { in md_bitmap_copy_from_slot()
1997 counts = &bitmap->counts; in md_bitmap_copy_from_slot()
2000 if (md_bitmap_file_test_bit(bitmap, block)) { in md_bitmap_copy_from_slot()
2004 md_bitmap_file_clear_bit(bitmap, block); in md_bitmap_copy_from_slot()
2005 md_bitmap_set_memory_bits(mddev->bitmap, block, 1); in md_bitmap_copy_from_slot()
2006 md_bitmap_file_set_bit(mddev->bitmap, block); in md_bitmap_copy_from_slot()
2011 md_bitmap_update_sb(bitmap); in md_bitmap_copy_from_slot()
2014 for (i = 0; i < bitmap->storage.file_pages; i++) in md_bitmap_copy_from_slot()
2015 if (test_page_attr(bitmap, i, BITMAP_PAGE_PENDING)) in md_bitmap_copy_from_slot()
2016 set_page_attr(bitmap, i, BITMAP_PAGE_NEEDWRITE); in md_bitmap_copy_from_slot()
2017 md_bitmap_unplug(bitmap); in md_bitmap_copy_from_slot()
2019 md_bitmap_unplug(mddev->bitmap); in md_bitmap_copy_from_slot()
2022 md_bitmap_free(bitmap); in md_bitmap_copy_from_slot()
2029 void md_bitmap_status(struct seq_file *seq, struct bitmap *bitmap) in md_bitmap_status() argument
2034 if (!bitmap) in md_bitmap_status()
2037 counts = &bitmap->counts; in md_bitmap_status()
2039 chunk_kb = bitmap->mddev->bitmap_info.chunksize >> 10; in md_bitmap_status()
2046 chunk_kb ? chunk_kb : bitmap->mddev->bitmap_info.chunksize, in md_bitmap_status()
2048 if (bitmap->storage.file) { in md_bitmap_status()
2050 seq_file_path(seq, bitmap->storage.file, " \t\n"); in md_bitmap_status()
2056 int md_bitmap_resize(struct bitmap *bitmap, sector_t blocks, in md_bitmap_resize() argument
2079 if (bitmap->storage.file && !init) { in md_bitmap_resize()
2089 long space = bitmap->mddev->bitmap_info.space; in md_bitmap_resize()
2095 bytes = DIV_ROUND_UP(bitmap->counts.chunks, 8); in md_bitmap_resize()
2096 if (!bitmap->mddev->bitmap_info.external) in md_bitmap_resize()
2099 bitmap->mddev->bitmap_info.space = space; in md_bitmap_resize()
2101 chunkshift = bitmap->counts.chunkshift; in md_bitmap_resize()
2108 if (!bitmap->mddev->bitmap_info.external) in md_bitmap_resize()
2117 if (bitmap->mddev->bitmap_info.offset || bitmap->mddev->bitmap_info.file) in md_bitmap_resize()
2119 !bitmap->mddev->bitmap_info.external, in md_bitmap_resize()
2120 mddev_is_clustered(bitmap->mddev) in md_bitmap_resize()
2121 ? bitmap->cluster_slot : 0); in md_bitmap_resize()
2137 bitmap->mddev->pers->quiesce(bitmap->mddev, 1); in md_bitmap_resize()
2139 store.file = bitmap->storage.file; in md_bitmap_resize()
2140 bitmap->storage.file = NULL; in md_bitmap_resize()
2142 if (store.sb_page && bitmap->storage.sb_page) in md_bitmap_resize()
2144 page_address(bitmap->storage.sb_page), in md_bitmap_resize()
2146 spin_lock_irq(&bitmap->counts.lock); in md_bitmap_resize()
2147 md_bitmap_file_unmap(&bitmap->storage); in md_bitmap_resize()
2148 bitmap->storage = store; in md_bitmap_resize()
2150 old_counts = bitmap->counts; in md_bitmap_resize()
2151 bitmap->counts.bp = new_bp; in md_bitmap_resize()
2152 bitmap->counts.pages = pages; in md_bitmap_resize()
2153 bitmap->counts.missing_pages = pages; in md_bitmap_resize()
2154 bitmap->counts.chunkshift = chunkshift; in md_bitmap_resize()
2155 bitmap->counts.chunks = chunks; in md_bitmap_resize()
2156 bitmap->mddev->bitmap_info.chunksize = 1UL << (chunkshift + in md_bitmap_resize()
2163 if (mddev_is_clustered(bitmap->mddev)) { in md_bitmap_resize()
2166 ret = md_bitmap_checkpage(&bitmap->counts, page, 1, 1); in md_bitmap_resize()
2177 bitmap->counts.bp = old_counts.bp; in md_bitmap_resize()
2178 bitmap->counts.pages = old_counts.pages; in md_bitmap_resize()
2179 bitmap->counts.missing_pages = old_counts.pages; in md_bitmap_resize()
2180 bitmap->counts.chunkshift = old_counts.chunkshift; in md_bitmap_resize()
2181 bitmap->counts.chunks = old_counts.chunks; in md_bitmap_resize()
2182 bitmap->mddev->bitmap_info.chunksize = in md_bitmap_resize()
2188 bitmap->counts.bp[page].count += 1; in md_bitmap_resize()
2200 bmc_new = md_bitmap_get_counter(&bitmap->counts, block, &new_blocks, 1); in md_bitmap_resize()
2209 md_bitmap_file_set_bit(bitmap, block); in md_bitmap_resize()
2213 md_bitmap_count_page(&bitmap->counts, block, 1); in md_bitmap_resize()
2214 md_bitmap_set_pending(&bitmap->counts, block); in md_bitmap_resize()
2224 if (bitmap->counts.bp != old_counts.bp) { in md_bitmap_resize()
2236 bmc = md_bitmap_get_counter(&bitmap->counts, block, &new_blocks, 1); in md_bitmap_resize()
2243 md_bitmap_count_page(&bitmap->counts, block, 1); in md_bitmap_resize()
2244 md_bitmap_set_pending(&bitmap->counts, block); in md_bitmap_resize()
2249 for (i = 0; i < bitmap->storage.file_pages; i++) in md_bitmap_resize()
2250 set_page_attr(bitmap, i, BITMAP_PAGE_DIRTY); in md_bitmap_resize()
2252 spin_unlock_irq(&bitmap->counts.lock); in md_bitmap_resize()
2255 md_bitmap_unplug(bitmap); in md_bitmap_resize()
2256 bitmap->mddev->pers->quiesce(bitmap->mddev, 0); in md_bitmap_resize()
2297 if (mddev->bitmap || mddev->bitmap_info.file || in location_store()
2343 struct bitmap *bitmap; in location_store() local
2344 bitmap = md_bitmap_create(mddev, -1); in location_store()
2346 if (IS_ERR(bitmap)) in location_store()
2347 rv = PTR_ERR(bitmap); in location_store()
2349 mddev->bitmap = bitmap; in location_store()
2404 if (mddev->bitmap && in space_store()
2405 sectors < (mddev->bitmap->storage.bytes + 511) >> 9) in space_store()
2519 md_bitmap_update_sb(mddev->bitmap); in backlog_store()
2540 if (mddev->bitmap) in chunksize_store()
2568 if (mddev->bitmap || in metadata_store()
2589 if (mddev->bitmap) in can_clear_show()
2590 len = sprintf(page, "%s\n", (mddev->bitmap->need_sync ? in can_clear_show()
2600 if (mddev->bitmap == NULL) in can_clear_store()
2603 mddev->bitmap->need_sync = 1; in can_clear_store()
2607 mddev->bitmap->need_sync = 0; in can_clear_store()
2621 if (mddev->bitmap == NULL) in behind_writes_used_show()
2625 mddev->bitmap->behind_writes_used); in behind_writes_used_show()
2633 if (mddev->bitmap) in behind_writes_used_reset()
2634 mddev->bitmap->behind_writes_used = 0; in behind_writes_used_reset()