diff options
Diffstat (limited to 'drivers/md/md-bitmap.c')
| -rw-r--r-- | drivers/md/md-bitmap.c | 305 |
1 files changed, 148 insertions, 157 deletions
diff --git a/drivers/md/md-bitmap.c b/drivers/md/md-bitmap.c index f983c3fdf204..2fc8c113977f 100644 --- a/drivers/md/md-bitmap.c +++ b/drivers/md/md-bitmap.c @@ -46,8 +46,8 @@ static inline char *bmname(struct bitmap *bitmap) * if we find our page, we increment the page's refcount so that it stays * allocated while we're using it */ -static int bitmap_checkpage(struct bitmap_counts *bitmap, - unsigned long page, int create, int no_hijack) +static int md_bitmap_checkpage(struct bitmap_counts *bitmap, + unsigned long page, int create, int no_hijack) __releases(bitmap->lock) __acquires(bitmap->lock) { @@ -115,7 +115,7 @@ __acquires(bitmap->lock) /* if page is completely empty, put it back on the free list, or dealloc it */ /* if page was hijacked, unmark the flag so it might get alloced next time */ /* Note: lock should be held when calling this */ -static void bitmap_checkfree(struct bitmap_counts *bitmap, unsigned long page) +static void md_bitmap_checkfree(struct bitmap_counts *bitmap, unsigned long page) { char *ptr; @@ -280,7 +280,7 @@ restart: return -EINVAL; } -static void bitmap_file_kick(struct bitmap *bitmap); +static void md_bitmap_file_kick(struct bitmap *bitmap); /* * write out a page to a file */ @@ -310,7 +310,7 @@ static void write_page(struct bitmap *bitmap, struct page *page, int wait) atomic_read(&bitmap->pending_writes)==0); } if (test_bit(BITMAP_WRITE_ERROR, &bitmap->flags)) - bitmap_file_kick(bitmap); + md_bitmap_file_kick(bitmap); } static void end_bitmap_write(struct buffer_head *bh, int uptodate) @@ -421,11 +421,11 @@ out: */ /* - * bitmap_wait_writes() should be called before writing any bitmap + * md_bitmap_wait_writes() should be called before writing any bitmap * blocks, to ensure previous writes, particularly from - * bitmap_daemon_work(), have completed. + * md_bitmap_daemon_work(), have completed. */ -static void bitmap_wait_writes(struct bitmap *bitmap) +static void md_bitmap_wait_writes(struct bitmap *bitmap) { if (bitmap->storage.file) wait_event(bitmap->write_wait, @@ -443,7 +443,7 @@ static void bitmap_wait_writes(struct bitmap *bitmap) /* update the event counter and sync the superblock to disk */ -void bitmap_update_sb(struct bitmap *bitmap) +void md_bitmap_update_sb(struct bitmap *bitmap) { bitmap_super_t *sb; @@ -476,10 +476,10 @@ void bitmap_update_sb(struct bitmap *bitmap) kunmap_atomic(sb); write_page(bitmap, bitmap->storage.sb_page, 1); } -EXPORT_SYMBOL(bitmap_update_sb); +EXPORT_SYMBOL(md_bitmap_update_sb); /* print out the bitmap file superblock */ -void bitmap_print_sb(struct bitmap *bitmap) +void md_bitmap_print_sb(struct bitmap *bitmap) { bitmap_super_t *sb; @@ -518,7 +518,7 @@ void bitmap_print_sb(struct bitmap *bitmap) * * Returns: 0 on success, -Exxx on error */ -static int bitmap_new_disk_sb(struct bitmap *bitmap) +static int md_bitmap_new_disk_sb(struct bitmap *bitmap) { bitmap_super_t *sb; unsigned long chunksize, daemon_sleep, write_behind; @@ -577,7 +577,7 @@ static int bitmap_new_disk_sb(struct bitmap *bitmap) } /* read the superblock from the bitmap file and initialize some bitmap fields */ -static int bitmap_read_sb(struct bitmap *bitmap) +static int md_bitmap_read_sb(struct bitmap *bitmap) { char *reason = NULL; bitmap_super_t *sb; @@ -727,7 +727,7 @@ out_no_sb: bitmap->mddev->bitmap_info.space > sectors_reserved) bitmap->mddev->bitmap_info.space = sectors_reserved; if (err) { - bitmap_print_sb(bitmap); + md_bitmap_print_sb(bitmap); if (bitmap->cluster_slot < 0) md_cluster_stop(bitmap->mddev); } @@ -774,9 +774,9 @@ static inline struct page *filemap_get_page(struct bitmap_storage *store, return store->filemap[file_page_index(store, chunk)]; } -static int bitmap_storage_alloc(struct bitmap_storage *store, - unsigned long chunks, int with_super, - int slot_number) +static int md_bitmap_storage_alloc(struct bitmap_storage *store, + unsigned long chunks, int with_super, + int slot_number) { int pnum, offset = 0; unsigned long num_pages; @@ -830,7 +830,7 @@ static int bitmap_storage_alloc(struct bitmap_storage *store, return 0; } -static void bitmap_file_unmap(struct bitmap_storage *store) +static void md_bitmap_file_unmap(struct bitmap_storage *store) { struct page **map, *sb_page; int pages; @@ -862,12 +862,12 @@ static void bitmap_file_unmap(struct bitmap_storage *store) * then it is no longer reliable, so we stop using it and we mark the file * as failed in the superblock */ -static void bitmap_file_kick(struct bitmap *bitmap) +static void md_bitmap_file_kick(struct bitmap *bitmap) { char *path, *ptr = NULL; if (!test_and_set_bit(BITMAP_STALE, &bitmap->flags)) { - bitmap_update_sb(bitmap); + md_bitmap_update_sb(bitmap); if (bitmap->storage.file) { path = kmalloc(PAGE_SIZE, GFP_KERNEL); @@ -923,7 +923,7 @@ static inline int test_and_clear_page_attr(struct bitmap *bitmap, int pnum, * we set the bit immediately, then we record the page number so that * when an unplug occurs, we can flush the dirty pages out to disk */ -static void bitmap_file_set_bit(struct bitmap *bitmap, sector_t block) +static void md_bitmap_file_set_bit(struct bitmap *bitmap, sector_t block) { unsigned long bit; struct page *page; @@ -952,7 +952,7 @@ static void bitmap_file_set_bit(struct bitmap *bitmap, sector_t block) set_page_attr(bitmap, page->index - node_offset, BITMAP_PAGE_DIRTY); } -static void bitmap_file_clear_bit(struct bitmap *bitmap, sector_t block) +static void md_bitmap_file_clear_bit(struct bitmap *bitmap, sector_t block) { unsigned long bit; struct page *page; @@ -980,7 +980,7 @@ static void bitmap_file_clear_bit(struct bitmap *bitmap, sector_t block) } } -static int bitmap_file_test_bit(struct bitmap *bitmap, sector_t block) +static int md_bitmap_file_test_bit(struct bitmap *bitmap, sector_t block) { unsigned long bit; struct page *page; @@ -1005,7 +1005,7 @@ static int bitmap_file_test_bit(struct bitmap *bitmap, sector_t block) /* this gets called when the md device is ready to unplug its underlying * (slave) device queues -- before we let any writes go down, we need to * sync the dirty pages of the bitmap file to disk */ -void bitmap_unplug(struct bitmap *bitmap) +void md_bitmap_unplug(struct bitmap *bitmap) { unsigned long i; int dirty, need_write; @@ -1025,7 +1025,7 @@ void bitmap_unplug(struct bitmap *bitmap) BITMAP_PAGE_NEEDWRITE); if (dirty || need_write) { if (!writing) { - bitmap_wait_writes(bitmap); + md_bitmap_wait_writes(bitmap); if (bitmap->mddev->queue) blk_add_trace_msg(bitmap->mddev->queue, "md bitmap_unplug"); @@ -1036,14 +1036,14 @@ void bitmap_unplug(struct bitmap *bitmap) } } if (writing) - bitmap_wait_writes(bitmap); + md_bitmap_wait_writes(bitmap); if (test_bit(BITMAP_WRITE_ERROR, &bitmap->flags)) - bitmap_file_kick(bitmap); + md_bitmap_file_kick(bitmap); } -EXPORT_SYMBOL(bitmap_unplug); +EXPORT_SYMBOL(md_bitmap_unplug); -static void bitmap_set_memory_bits(struct bitmap *bitmap, sector_t offset, int needed); +static void md_bitmap_set_memory_bits(struct bitmap *bitmap, sector_t offset, int needed); /* * bitmap_init_from_disk -- called at bitmap_create time to initialize * the in-memory bitmap from the on-disk bitmap -- also, sets up the * memory mapping of the bitmap file @@ -1055,7 +1055,7 @@ static void bitmap_set_memory_bits(struct bitmap *bitmap, sector_t offset, int n * We ignore all bits for sectors that end earlier than 'start'. * This is used when reading an out-of-date bitmap... */ -static int bitmap_init_from_disk(struct bitmap *bitmap, sector_t start) +static int md_bitmap_init_from_disk(struct bitmap *bitmap, sector_t start) { unsigned long i, chunks, index, oldindex, bit, node_offset = 0; struct page *page = NULL; @@ -1078,9 +1078,9 @@ static int bitmap_init_from_disk(struct bitmap *bitmap, sector_t start) /* if the disk bit is set, set the memory bit */ int needed = ((sector_t)(i+1) << (bitmap->counts.chunkshift) >= start); - bitmap_set_memory_bits(bitmap, - (sector_t)i << bitmap->counts.chunkshift, - needed); + md_bitmap_set_memory_bits(bitmap, + (sector_t)i << bitmap->counts.chunkshift, + needed); } return 0; } @@ -1159,9 +1159,9 @@ static int bitmap_init_from_disk(struct bitmap *bitmap, sector_t start) /* if the disk bit is set, set the memory bit */ int needed = ((sector_t)(i+1) << bitmap->counts.chunkshift >= start); - bitmap_set_memory_bits(bitmap, - (sector_t)i << bitmap->counts.chunkshift, - needed); + md_bitmap_set_memory_bits(bitmap, + (sector_t)i << bitmap->counts.chunkshift, + needed); bit_cnt++; } offset = 0; @@ -1179,7 +1179,7 @@ static int bitmap_init_from_disk(struct bitmap *bitmap, sector_t start) return ret; } -void bitmap_write_all(struct bitmap *bitmap) +void md_bitmap_write_all(struct bitmap *bitmap) { /* We don't actually write all bitmap blocks here, * just flag them as needing to be written @@ -1198,16 +1198,16 @@ void bitmap_write_all(struct bitmap *bitmap) bitmap->allclean = 0; } -static void bitmap_count_page(struct bitmap_counts *bitmap, - sector_t offset, int inc) +static void md_bitmap_count_page(struct bitmap_counts *bitmap, + sector_t offset, int inc) { sector_t chunk = offset >> bitmap->chunkshift; unsigned long page = chunk >> PAGE_COUNTER_SHIFT; bitmap->bp[page].count += inc; - bitmap_checkfree(bitmap, page); + md_bitmap_checkfree(bitmap, page); } -static void bitmap_set_pending(struct bitmap_counts *bitmap, sector_t offset) +static void md_bitmap_set_pending(struct bitmap_counts *bitmap, sector_t offset) { sector_t chunk = offset >> bitmap->chunkshift; unsigned long page = chunk >> PAGE_COUNTER_SHIFT; @@ -1217,16 +1217,16 @@ static void bitmap_set_pending(struct bitmap_counts *bitmap, sector_t offset) bp->pending = 1; } -static bitmap_counter_t *bitmap_get_counter(struct bitmap_counts *bitmap, - sector_t offset, sector_t *blocks, - int create); +static bitmap_counter_t *md_bitmap_get_counter(struct bitmap_counts *bitmap, + sector_t offset, sector_t *blocks, + int create); /* * bitmap daemon -- periodically wakes up to clean bits and flush pages * out to disk */ -void bitmap_daemon_work(struct mddev *mddev) +void md_bitmap_daemon_work(struct mddev *mddev) { struct bitmap *bitmap; unsigned long j; @@ -1301,10 +1301,8 @@ void bitmap_daemon_work(struct mddev *mddev) } counts->bp[j >> PAGE_COUNTER_SHIFT].pending = 0; } - bmc = bitmap_get_counter(counts, - block, - &blocks, 0); + bmc = md_bitmap_get_counter(counts, block, &blocks, 0); if (!bmc) { j |= PAGE_COUNTER_MASK; continue; @@ -1312,17 +1310,17 @@ void bitmap_daemon_work(struct mddev *mddev) if (*bmc == 1 && !bitmap->need_sync) { /* We can clear the bit */ *bmc = 0; - bitmap_count_page(counts, block, -1); - bitmap_file_clear_bit(bitmap, block); + md_bitmap_count_page(counts, block, -1); + md_bitmap_file_clear_bit(bitmap, block); } else if (*bmc && *bmc <= 2) { *bmc = 1; - bitmap_set_pending(counts, block); + md_bitmap_set_pending(counts, block); bitmap->allclean = 0; } } spin_unlock_irq(&counts->lock); - bitmap_wait_writes(bitmap); + md_bitmap_wait_writes(bitmap); /* Now start writeout on any page in NEEDWRITE that isn't DIRTY. * DIRTY pages need to be written by bitmap_unplug so it can wait * for them. @@ -1352,9 +1350,9 @@ void bitmap_daemon_work(struct mddev *mddev) mutex_unlock(&mddev->bitmap_info.mutex); } -static bitmap_counter_t *bitmap_get_counter(struct bitmap_counts *bitmap, - sector_t offset, sector_t *blocks, - int create) +static bitmap_counter_t *md_bitmap_get_counter(struct bitmap_counts *bitmap, + sector_t offset, sector_t *blocks, + int create) __releases(bitmap->lock) __acquires(bitmap->lock) { @@ -1368,7 +1366,7 @@ __acquires(bitmap->lock) sector_t csize; int err; - err = bitmap_checkpage(bitmap, page, create, 0); + err = md_bitmap_checkpage(bitmap, page, create, 0); if (bitmap->bp[page].hijacked || bitmap->bp[page].map == NULL) @@ -1394,7 +1392,7 @@ __acquires(bitmap->lock) &(bitmap->bp[page].map[pageoff]); } -int bitmap_startwrite(struct bitmap *bitmap, sector_t offset, unsigned long sectors, int behind) +int md_bitmap_startwrite(struct bitmap *bitmap, sector_t offset, unsigned long sectors, int behind) { if (!bitmap) return 0; @@ -1415,7 +1413,7 @@ int bitmap_startwrite(struct bitmap *bitmap, sector_t offset, unsigned long sect bitmap_counter_t *bmc; spin_lock_irq(&bitmap->counts.lock); - bmc = bitmap_get_counter(&bitmap->counts, offset, &blocks, 1); + bmc = md_bitmap_get_counter(&bitmap->counts, offset, &blocks, 1); if (!bmc) { spin_unlock_irq(&bitmap->counts.lock); return 0; @@ -1437,8 +1435,8 @@ int bitmap_startwrite(struct bitmap *bitmap, sector_t offset, unsigned long sect switch (*bmc) { case 0: - bitmap_file_set_bit(bitmap, offset); - bitmap_count_page(&bitmap->counts, offset, 1); + md_bitmap_file_set_bit(bitmap, offset); + md_bitmap_count_page(&bitmap->counts, offset, 1); /* fall through */ case 1: *bmc = 2; @@ -1456,10 +1454,10 @@ int bitmap_startwrite(struct bitmap *bitmap, sector_t offset, unsigned long sect } return 0; } -EXPORT_SYMBOL(bitmap_startwrite); +EXPORT_SYMBOL(md_bitmap_startwrite); -void bitmap_endwrite(struct bitmap *bitmap, sector_t offset, unsigned long sectors, - int success, int behind) +void md_bitmap_endwrite(struct bitmap *bitmap, sector_t offset, + unsigned long sectors, int success, int behind) { if (!bitmap) return; @@ -1477,7 +1475,7 @@ void bitmap_endwrite(struct bitmap *bitmap, sector_t offset, unsigned long secto bitmap_counter_t *bmc; spin_lock_irqsave(&bitmap->counts.lock, flags); - bmc = bitmap_get_counter(&bitmap->counts, offset, &blocks, 0); + bmc = md_bitmap_get_counter(&bitmap->counts, offset, &blocks, 0); if (!bmc) { spin_unlock_irqrestore(&bitmap->counts.lock, flags); return; @@ -1498,7 +1496,7 @@ void bitmap_endwrite(struct bitmap *bitmap, sector_t offset, unsigned long secto (*bmc)--; if (*bmc <= 2) { - bitmap_set_pending(&bitmap->counts, offset); + md_bitmap_set_pending(&bitmap->counts, offset); bitmap->allclean = 0; } spin_unlock_irqrestore(&bitmap->counts.lock, flags); @@ -1509,7 +1507,7 @@ void bitmap_endwrite(struct bitmap *bitmap, sector_t offset, unsigned long secto sectors = 0; } } -EXPORT_SYMBOL(bitmap_endwrite); +EXPORT_SYMBOL(md_bitmap_endwrite); static int __bitmap_start_sync(struct bitmap *bitmap, sector_t offset, sector_t *blocks, int degraded) @@ -1521,7 +1519,7 @@ static int __bitmap_start_sync(struct bitmap *bitmap, sector_t offset, sector_t return 1; /* always resync if no bitmap */ } spin_lock_irq(&bitmap->counts.lock); - bmc = bitmap_get_counter(&bitmap->counts, offset, blocks, 0); + bmc = md_bitmap_get_counter(&bitmap->counts, offset, blocks, 0); rv = 0; if (bmc) { /* locked */ @@ -1539,8 +1537,8 @@ static int __bitmap_start_sync(struct bitmap *bitmap, sector_t offset, sector_t return rv; } -int bitmap_start_sync(struct bitmap *bitmap, sector_t offset, sector_t *blocks, - int degraded) +int md_bitmap_start_sync(struct bitmap *bitmap, sector_t offset, sector_t *blocks, + int degraded) { /* bitmap_start_sync must always report on multiples of whole * pages, otherwise resync (which is very PAGE_SIZE based) will @@ -1561,9 +1559,9 @@ int bitmap_start_sync(struct bitmap *bitmap, sector_t offset, sector_t *blocks, } return rv; } -EXPORT_SYMBOL(bitmap_start_sync); +EXPORT_SYMBOL(md_bitmap_start_sync); -void bitmap_end_sync(struct bitmap *bitmap, sector_t offset, sector_t *blocks, int aborted) +void md_bitmap_end_sync(struct bitmap *bitmap, sector_t offset, sector_t *blocks, int aborted) { bitmap_counter_t *bmc; unsigned long flags; @@ -1573,7 +1571,7 @@ void bitmap_end_sync(struct bitmap *bitmap, sector_t offset, sector_t *blocks, i return; } spin_lock_irqsave(&bitmap->counts.lock, flags); - bmc = bitmap_get_counter(&bitmap->counts, offset, blocks, 0); + bmc = md_bitmap_get_counter(&bitmap->counts, offset, blocks, 0); if (bmc == NULL) goto unlock; /* locked */ @@ -1584,7 +1582,7 @@ void bitmap_end_sync(struct bitmap *bitmap, sector_t offset, sector_t *blocks, i *bmc |= NEEDED_MASK; else { if (*bmc <= 2) { - bitmap_set_pending(&bitmap->counts, offset); + md_bitmap_set_pending(&bitmap->counts, offset); bitmap->allclean = 0; } } @@ -1592,9 +1590,9 @@ void bitmap_end_sync(struct bitmap *bitmap, sector_t offset, sector_t *blocks, i unlock: spin_unlock_irqrestore(&bitmap->counts.lock, flags); } -EXPORT_SYMBOL(bitmap_end_sync); +EXPORT_SYMBOL(md_bitmap_end_sync); -void bitmap_close_sync(struct bitmap *bitmap) +void md_bitmap_close_sync(struct bitmap *bitmap) { /* Sync has finished, and any bitmap chunks that weren't synced * properly have been aborted. It remains to us to clear the @@ -1605,13 +1603,13 @@ void bitmap_close_sync(struct bitmap *bitmap) if (!bitmap) return; while (sector < bitmap->mddev->resync_max_sectors) { - bitmap_end_sync(bitmap, sector, &blocks, 0); + md_bitmap_end_sync(bitmap, sector, &blocks, 0); sector += blocks; } } -EXPORT_SYMBOL(bitmap_close_sync); +EXPORT_SYMBOL(md_bitmap_close_sync); -void bitmap_cond_end_sync(struct bitmap *bitmap, sector_t sector, bool force) +void md_bitmap_cond_end_sync(struct bitmap *bitmap, sector_t sector, bool force) { sector_t s = 0; sector_t blocks; @@ -1633,15 +1631,15 @@ void bitmap_cond_end_sync(struct bitmap *bitmap, sector_t sector, bool force) sector &= ~((1ULL << bitmap->counts.chunkshift) - 1); s = 0; while (s < sector && s < bitmap->mddev->resync_max_sectors) { - bitmap_end_sync(bitmap, s, &blocks, 0); + md_bitmap_end_sync(bitmap, s, &blocks, 0); s += blocks; } bitmap->last_end_sync = jiffies; sysfs_notify(&bitmap->mddev->kobj, NULL, "sync_completed"); } -EXPORT_SYMBOL(bitmap_cond_end_sync); +EXPORT_SYMBOL(md_bitmap_cond_end_sync); -void bitmap_sync_with_cluster(struct mddev *mddev, +void md_bitmap_sync_with_cluster(struct mddev *mddev, sector_t old_lo, sector_t old_hi, sector_t new_lo, sector_t new_hi) { @@ -1649,20 +1647,20 @@ void bitmap_sync_with_cluster(struct mddev *mddev, sector_t sector, blocks = 0; for (sector = old_lo; sector < new_lo; ) { - bitmap_end_sync(bitmap, sector, &blocks, 0); + md_bitmap_end_sync(bitmap, sector, &blocks, 0); sector += blocks; } WARN((blocks > new_lo) && old_lo, "alignment is not correct for lo\n"); for (sector = old_hi; sector < new_hi; ) { - bitmap_start_sync(bitmap, sector, &blocks, 0); + md_bitmap_start_sync(bitmap, sector, &blocks, 0); sector += blocks; } WARN((blocks > new_hi) && old_hi, "alignment is not correct for hi\n"); } -EXPORT_SYMBOL(bitmap_sync_with_cluster); +EXPORT_SYMBOL(md_bitmap_sync_with_cluster); -static void bitmap_set_memory_bits(struct bitmap *bitmap, sector_t offset, int needed) +static void md_bitmap_set_memory_bits(struct bitmap *bitmap, sector_t offset, int needed) { /* For each chunk covered by any of these sectors, set the * counter to 2 and possibly set resync_needed. They should all @@ -1672,15 +1670,15 @@ static void bitmap_set_memory_bits(struct bitmap *bitmap, sector_t offset, int n sector_t secs; bitmap_counter_t *bmc; spin_lock_irq(&bitmap->counts.lock); - bmc = bitmap_get_counter(&bitmap->counts, offset, &secs, 1); + bmc = md_bitmap_get_counter(&bitmap->counts, offset, &secs, 1); if (!bmc) { spin_unlock_irq(&bitmap->counts.lock); return; } if (!*bmc) { *bmc = 2; - bitmap_count_page(&bitmap->counts, offset, 1); - bitmap_set_pending(&bitmap->counts, offset); + md_bitmap_count_page(&bitmap->counts, offset, 1); + md_bitmap_set_pending(&bitmap->counts, offset); bitmap->allclean = 0; } if (needed) @@ -1689,14 +1687,14 @@ static void bitmap_set_memory_bits(struct bitmap *bitmap, sector_t offset, int n } /* dirty the memory and file bits for bitmap chunks "s" to "e" */ -void bitmap_dirty_bits(struct bitmap *bitmap, unsigned long s, unsigned long e) +void md_bitmap_dirty_bits(struct bitmap *bitmap, unsigned long s, unsigned long e) { unsigned long chunk; for (chunk = s; chunk <= e; chunk++) { sector_t sec = (sector_t)chunk << bitmap->counts.chunkshift; - bitmap_set_memory_bits(bitmap, sec, 1); - bitmap_file_set_bit(bitmap, sec); + md_bitmap_set_memory_bits(bitmap, sec, 1); + md_bitmap_file_set_bit(bitmap, sec); if (sec < bitmap->mddev->recovery_cp) /* We are asserting that the array is dirty, * so move the recovery_cp address back so @@ -1709,7 +1707,7 @@ void bitmap_dirty_bits(struct bitmap *bitmap, unsigned long s, unsigned long e) /* * flush out any pending updates */ -void bitmap_flush(struct mddev *mddev) +void md_bitmap_flush(struct mddev *mddev) { struct bitmap *bitmap = mddev->bitmap; long sleep; @@ -1722,18 +1720,18 @@ void bitmap_flush(struct mddev *mddev) */ sleep = mddev->bitmap_info.daemon_sleep * 2; bitmap->daemon_lastrun -= sleep; - bitmap_daemon_work(mddev); + md_bitmap_daemon_work(mddev); bitmap->daemon_lastrun -= sleep; - bitmap_daemon_work(mddev); + md_bitmap_daemon_work(mddev); bitmap->daemon_lastrun -= sleep; - bitmap_daemon_work(mddev); - bitmap_update_sb(bitmap); + md_bitmap_daemon_work(mddev); + md_bitmap_update_sb(bitmap); } /* * free memory that was allocated */ -void bitmap_free(struct bitmap *bitmap) +void md_bitmap_free(struct bitmap *bitmap) { unsigned long k, pages; struct bitmap_page *bp; @@ -1753,7 +1751,7 @@ void bitmap_free(struct bitmap *bitmap) atomic_read(&bitmap->pending_writes) == 0); /* release the bitmap file */ - bitmap_file_unmap(&bitmap->storage); + md_bitmap_file_unmap(&bitmap->storage); bp = bitmap->counts.bp; pages = bitmap->counts.pages; @@ -1767,9 +1765,9 @@ void bitmap_free(struct bitmap *bitmap) kfree(bp); kfree(bitmap); } -EXPORT_SYMBOL(bitmap_free); +EXPORT_SYMBOL(md_bitmap_free); -void bitmap_wait_behind_writes(struct mddev *mddev) +void md_bitmap_wait_behind_writes(struct mddev *mddev) { struct bitmap *bitmap = mddev->bitmap; @@ -1783,14 +1781,14 @@ void bitmap_wait_behind_writes(struct mddev *mddev) } } -void bitmap_destroy(struct mddev *mddev) +void md_bitmap_destroy(struct mddev *mddev) { struct bitmap *bitmap = mddev->bitmap; if (!bitmap) /* there was no bitmap */ return; - bitmap_wait_behind_writes(mddev); + md_bitmap_wait_behind_writes(mddev); mutex_lock(&mddev->bitmap_info.mutex); spin_lock(&mddev->lock); @@ -1800,7 +1798,7 @@ void bitmap_destroy(struct mddev *mddev) if (mddev->thread) mddev->thread->timeout = MAX_SCHEDULE_TIMEOUT; - bitmap_free(bitmap); + md_bitmap_free(bitmap); } /* @@ -1808,7 +1806,7 @@ void bitmap_destroy(struct mddev *mddev) * if this returns an error, bitmap_destroy must be called to do clean up * once mddev->bitmap is set */ -struct bitmap *bitmap_create(struct mddev *mddev, int slot) +struct bitmap *md_bitmap_create(struct mddev *mddev, int slot) { struct bitmap *bitmap; sector_t blocks = mddev->resync_max_sectors; @@ -1863,9 +1861,9 @@ struct bitmap *bitmap_create(struct mddev *mddev, int slot) * instructing us to create a new on-disk bitmap instance. */ if (test_and_clear_bit(MD_ARRAY_FIRST_USE, &mddev->flags)) - err = bitmap_new_disk_sb(bitmap); + err = md_bitmap_new_disk_sb(bitmap); else - err = bitmap_read_sb(bitmap); + err = md_bitmap_read_sb(bitmap); } else { err = 0; if (mddev->bitmap_info.chunksize == 0 || @@ -1878,7 +1876,7 @@ struct bitmap *bitmap_create(struct mddev *mddev, int slot) goto error; bitmap->daemon_lastrun = jiffies; - err = bitmap_resize(bitmap, blocks, mddev->bitmap_info.chunksize, 1); + err = md_bitmap_resize(bitmap, blocks, mddev->bitmap_info.chunksize, 1); if (err) goto error; @@ -1891,11 +1889,11 @@ struct bitmap *bitmap_create(struct mddev *mddev, int slot) return bitmap; error: - bitmap_free(bitmap); + md_bitmap_free(bitmap); return ERR_PTR(err); } -int bitmap_load(struct mddev *mddev) +int md_bitmap_load(struct mddev *mddev) { int err = 0; sector_t start = 0; @@ -1915,10 +1913,10 @@ int bitmap_load(struct mddev *mddev) */ while (sector < mddev->resync_max_sectors) { sector_t blocks; - bitmap_start_sync(bitmap, sector, &blocks, 0); + md_bitmap_start_sync(bitmap, sector, &blocks, 0); sector += blocks; } - bitmap_close_sync(bitmap); + md_bitmap_close_sync(bitmap); if (mddev->degraded == 0 || bitmap->events_cleared == mddev->events) @@ -1927,7 +1925,7 @@ int bitmap_load(struct mddev *mddev) start = mddev->recovery_cp; mutex_lock(&mddev->bitmap_info.mutex); - err = bitmap_init_from_disk(bitmap, start); + err = md_bitmap_init_from_disk(bitmap, start); mutex_unlock(&mddev->bitmap_info.mutex); if (err) @@ -1940,29 +1938,29 @@ int bitmap_load(struct mddev *mddev) mddev->thread->timeout = mddev->bitmap_info.daemon_sleep; md_wakeup_thread(mddev->thread); - bitmap_update_sb(bitmap); + md_bitmap_update_sb(bitmap); if (test_bit(BITMAP_WRITE_ERROR, &bitmap->flags)) err = -EIO; out: return err; } -EXPORT_SYMBOL_GPL(bitmap_load); +EXPORT_SYMBOL_GPL(md_bitmap_load); struct bitmap *get_bitmap_from_slot(struct mddev *mddev, int slot) { int rv = 0; struct bitmap *bitmap; - bitmap = bitmap_create(mddev, slot); + bitmap = md_bitmap_create(mddev, slot); if (IS_ERR(bitmap)) { rv = PTR_ERR(bitmap); return ERR_PTR(rv); } - rv = bitmap_init_from_disk(bitmap, 0); + rv = md_bitmap_init_from_disk(bitmap, 0); if (rv) { - bitmap_free(bitmap); + md_bitmap_free(bitmap); return ERR_PTR(rv); } @@ -1973,7 +1971,7 @@ EXPORT_SYMBOL(get_bitmap_from_slot); /* Loads the bitmap associated with slot and copies the resync information * to our bitmap */ -int bitmap_copy_from_slot(struct mddev *mddev, int slot, +int md_bitmap_copy_from_slot(struct mddev *mddev, int slot, sector_t *low, sector_t *high, bool clear_bits) { int rv = 0, i, j; @@ -1990,35 +1988,35 @@ int bitmap_copy_from_slot(struct mddev *mddev, int slot, counts = &bitmap->counts; for (j = 0; j < counts->chunks; j++) { block = (sector_t)j << counts->chunkshift; - if (bitmap_file_test_bit(bitmap, block)) { + if (md_bitmap_file_test_bit(bitmap, block)) { if (!lo) lo = block; hi = block; - bitmap_file_clear_bit(bitmap, block); - bitmap_set_memory_bits(mddev->bitmap, block, 1); - bitmap_file_set_bit(mddev->bitmap, block); + md_bitmap_file_clear_bit(bitmap, block); + md_bitmap_set_memory_bits(mddev->bitmap, block, 1); + md_bitmap_file_set_bit(mddev->bitmap, block); } } if (clear_bits) { - bitmap_update_sb(bitmap); + md_bitmap_update_sb(bitmap); /* BITMAP_PAGE_PENDING is set, but bitmap_unplug needs * BITMAP_PAGE_DIRTY or _NEEDWRITE to write ... */ for (i = 0; i < bitmap->storage.file_pages; i++) if (test_page_attr(bitmap, i, BITMAP_PAGE_PENDING)) set_page_attr(bitmap, i, BITMAP_PAGE_NEEDWRITE); - bitmap_unplug(bitmap); + md_bitmap_unplug(bitmap); } - bitmap_unplug(mddev->bitmap); + md_bitmap_unplug(mddev->bitmap); *low = lo; *high = hi; return rv; } -EXPORT_SYMBOL_GPL(bitmap_copy_from_slot); +EXPORT_SYMBOL_GPL(md_bitmap_copy_from_slot); -void bitmap_status(struct seq_file *seq, struct bitmap *bitmap) +void md_bitmap_status(struct seq_file *seq, struct bitmap *bitmap) { unsigned long chunk_kb; struct bitmap_counts *counts; @@ -2045,7 +2043,7 @@ void bitmap_status(struct seq_file *seq, struct bitmap *bitmap) seq_printf(seq, "\n"); } -int bitmap_resize(struct bitmap *bitmap, sector_t blocks, +int md_bitmap_resize(struct bitmap *bitmap, sector_t blocks, int chunksize, int init) { /* If chunk_size is 0, choose an appropriate chunk size. @@ -2106,12 +2104,12 @@ int bitmap_resize(struct bitmap *bitmap, sector_t blocks, chunks = DIV_ROUND_UP_SECTOR_T(blocks, 1 << chunkshift); memset(&store, 0, sizeof(store)); if (bitmap->mddev->bitmap_info.offset || bitmap->mddev->bitmap_info.file) - ret = bitmap_storage_alloc(&store, chunks, - !bitmap->mddev->bitmap_info.external, - mddev_is_clustered(bitmap->mddev) - ? bitmap->cluster_slot : 0); + ret = md_bitmap_storage_alloc(&store, chunks, + !bitmap->mddev->bitmap_info.external, + mddev_is_clustered(bitmap->mddev) + ? bitmap->cluster_slot : 0); if (ret) { - bitmap_file_unmap(&store); + md_bitmap_file_unmap(&store); goto err; } @@ -2120,7 +2118,7 @@ int bitmap_resize(struct bitmap *bitmap, sector_t blocks, new_bp = kcalloc(pages, sizeof(*new_bp), GFP_KERNEL); ret = -ENOMEM; if (!new_bp) { - bitmap_file_unmap(&store); + md_bitmap_file_unmap(&store); goto err; } @@ -2134,7 +2132,7 @@ int bitmap_resize(struct bitmap *bitmap, sector_t blocks, memcpy(page_address(store.sb_page), page_address(bitmap->storage.sb_page), sizeof(bitmap_super_t)); - bitmap_file_unmap(&bitmap->storage); + md_bitmap_file_unmap(&bitmap->storage); bitmap->storage = store; old_counts = bitmap->counts; @@ -2154,7 +2152,7 @@ int bitmap_resize(struct bitmap *bitmap, sector_t blocks, if (mddev_is_clustered(bitmap->mddev)) { unsigned long page; for (page = 0; page < pages; page++) { - ret = bitmap_checkpage(&bitmap->counts, page, 1, 1); + ret = md_bitmap_checkpage(&bitmap->counts, page, 1, 1); if (ret) { unsigned long k; @@ -2184,27 +2182,23 @@ int bitmap_resize(struct bitmap *bitmap, sector_t blocks, bitmap_counter_t *bmc_old, *bmc_new; int set; - bmc_old = bitmap_get_counter(&old_counts, block, - &old_blocks, 0); + bmc_old = md_bitmap_get_counter(&old_counts, block, &old_blocks, 0); set = bmc_old && NEEDED(*bmc_old); if (set) { - bmc_new = bitmap_get_counter(&bitmap->counts, block, - &new_blocks, 1); + bmc_new = md_bitmap_get_counter(&bitmap->counts, block, &new_blocks, 1); if (*bmc_new == 0) { /* need to set on-disk bits too. */ sector_t end = block + new_blocks; sector_t start = block >> chunkshift; start <<= chunkshift; while (start < end) { - bitmap_file_set_bit(bitmap, block); + md_bitmap_file_set_bit(bitmap, block); start += 1 << chunkshift; } *bmc_new = 2; - bitmap_count_page(&bitmap->counts, - block, 1); - bitmap_set_pending(&bitmap->counts, - block); + md_bitmap_count_page(&bitmap->counts, block, 1); + md_bitmap_set_pending(&bitmap->counts, block); } *bmc_new |= NEEDED_MASK; if (new_blocks < old_blocks) @@ -2225,18 +2219,15 @@ int bitmap_resize(struct bitmap *bitmap, sector_t blocks, int i; while (block < (chunks << chunkshift)) { bitmap_counter_t *bmc; - bmc = bitmap_get_counter(&bitmap->counts, block, - &new_blocks, 1); + bmc = md_bitmap_get_counter(&bitmap->counts, block, &new_blocks, 1); if (bmc) { /* new space. It needs to be resynced, so * we set NEEDED_MASK. */ if (*bmc == 0) { *bmc = NEEDED_MASK | 2; - bitmap_count_page(&bitmap->counts, - block, 1); - bitmap_set_pending(&bitmap->counts, - block); + md_bitmap_count_page(&bitmap->counts, block, 1); + md_bitmap_set_pending(&bitmap->counts, block); } } block += new_blocks; @@ -2247,14 +2238,14 @@ int bitmap_resize(struct bitmap *bitmap, sector_t blocks, spin_unlock_irq(&bitmap->counts.lock); if (!init) { - bitmap_unplug(bitmap); + md_bitmap_unplug(bitmap); bitmap->mddev->pers->quiesce(bitmap->mddev, 0); } ret = 0; err: return ret; } -EXPORT_SYMBOL_GPL(bitmap_resize); +EXPORT_SYMBOL_GPL(md_bitmap_resize); static ssize_t location_show(struct mddev *mddev, char *page) @@ -2298,7 +2289,7 @@ location_store(struct mddev *mddev, const char *buf, size_t len) } if (mddev->pers) { mddev->pers->quiesce(mddev, 1); - bitmap_destroy(mddev); + md_bitmap_destroy(mddev); mddev->pers->quiesce(mddev, 0); } mddev->bitmap_info.offset = 0; @@ -2337,18 +2328,18 @@ location_store(struct mddev *mddev, const char *buf, size_t len) if (mddev->pers) { struct bitmap *bitmap; mddev->pers->quiesce(mddev, 1); - bitmap = bitmap_create(mddev, -1); + bitmap = md_bitmap_create(mddev, -1); if (IS_ERR(bitmap)) rv = PTR_ERR(bitmap); else { mddev->bitmap = bitmap; - rv = bitmap_load(mddev); + rv = md_bitmap_load(mddev); if (rv) mddev->bitmap_info.offset = 0; } mddev->pers->quiesce(mddev, 0); if (rv) { - bitmap_destroy(mddev); + md_bitmap_destroy(mddev); goto out; } } |