diff options
| -rw-r--r-- | drivers/md/dm-thin-metadata.c | 6 | ||||
| -rw-r--r-- | drivers/md/persistent-data/dm-block-manager.c | 58 |
2 files changed, 41 insertions, 23 deletions
diff --git a/drivers/md/dm-thin-metadata.c b/drivers/md/dm-thin-metadata.c index 82b82c318f1..afd84cacca4 100644 --- a/drivers/md/dm-thin-metadata.c +++ b/drivers/md/dm-thin-metadata.c @@ -681,10 +681,11 @@ struct dm_pool_metadata *dm_pool_metadata_open(struct block_device *bdev, bm = dm_block_manager_create(bdev, THIN_METADATA_BLOCK_SIZE, THIN_METADATA_CACHE_SIZE, THIN_MAX_CONCURRENT_LOCKS); - if (!bm) { + if (IS_ERR(bm)) { + r = PTR_ERR(bm); DMERR("could not create block manager"); kfree(pmd); - return ERR_PTR(-ENOMEM); + return ERR_PTR(r); } r = superblock_all_zeroes(bm, &create); @@ -694,7 +695,6 @@ struct dm_pool_metadata *dm_pool_metadata_open(struct block_device *bdev, return ERR_PTR(r); } - r = init_pmd(pmd, bm, 0, create); if (r) { dm_block_manager_destroy(bm); diff --git a/drivers/md/persistent-data/dm-block-manager.c b/drivers/md/persistent-data/dm-block-manager.c index 8ec46dd511f..c70ad6e303d 100644 --- a/drivers/md/persistent-data/dm-block-manager.c +++ b/drivers/md/persistent-data/dm-block-manager.c @@ -325,11 +325,6 @@ static struct dm_buffer *to_buffer(struct dm_block *b) return (struct dm_buffer *) b; } -static struct dm_bufio_client *to_bufio(struct dm_block_manager *bm) -{ - return (struct dm_bufio_client *) bm; -} - dm_block_t dm_block_location(struct dm_block *b) { return dm_bufio_get_block_number(to_buffer(b)); @@ -367,34 +362,57 @@ static void dm_block_manager_write_callback(struct dm_buffer *buf) /*---------------------------------------------------------------- * Public interface *--------------------------------------------------------------*/ +struct dm_block_manager { + struct dm_bufio_client *bufio; +}; + struct dm_block_manager *dm_block_manager_create(struct block_device *bdev, unsigned block_size, unsigned cache_size, unsigned max_held_per_thread) { - return (struct dm_block_manager *) - dm_bufio_client_create(bdev, block_size, max_held_per_thread, - sizeof(struct buffer_aux), - dm_block_manager_alloc_callback, - dm_block_manager_write_callback); + int r; + struct dm_block_manager *bm; + + bm = kmalloc(sizeof(*bm), GFP_KERNEL); + if (!bm) { + r = -ENOMEM; + goto bad; + } + + bm->bufio = dm_bufio_client_create(bdev, block_size, max_held_per_thread, + sizeof(struct buffer_aux), + dm_block_manager_alloc_callback, + dm_block_manager_write_callback); + if (IS_ERR(bm->bufio)) { + r = PTR_ERR(bm->bufio); + kfree(bm); + goto bad; + } + + return bm; + +bad: + return ERR_PTR(r); } EXPORT_SYMBOL_GPL(dm_block_manager_create); void dm_block_manager_destroy(struct dm_block_manager *bm) { - return dm_bufio_client_destroy(to_bufio(bm)); + dm_bufio_client_destroy(bm->bufio); + kfree(bm); } EXPORT_SYMBOL_GPL(dm_block_manager_destroy); unsigned dm_bm_block_size(struct dm_block_manager *bm) { - return dm_bufio_get_block_size(to_bufio(bm)); + return dm_bufio_get_block_size(bm->bufio); } EXPORT_SYMBOL_GPL(dm_bm_block_size); dm_block_t dm_bm_nr_blocks(struct dm_block_manager *bm) { - return dm_bufio_get_device_size(to_bufio(bm)); + return dm_bufio_get_device_size(bm->bufio); } static int dm_bm_validate_buffer(struct dm_block_manager *bm, @@ -406,7 +424,7 @@ static int dm_bm_validate_buffer(struct dm_block_manager *bm, int r; if (!v) return 0; - r = v->check(v, (struct dm_block *) buf, dm_bufio_get_block_size(to_bufio(bm))); + r = v->check(v, (struct dm_block *) buf, dm_bufio_get_block_size(bm->bufio)); if (unlikely(r)) return r; aux->validator = v; @@ -430,7 +448,7 @@ int dm_bm_read_lock(struct dm_block_manager *bm, dm_block_t b, void *p; int r; - p = dm_bufio_read(to_bufio(bm), b, (struct dm_buffer **) result); + p = dm_bufio_read(bm->bufio, b, (struct dm_buffer **) result); if (unlikely(IS_ERR(p))) return PTR_ERR(p); @@ -463,7 +481,7 @@ int dm_bm_write_lock(struct dm_block_manager *bm, void *p; int r; - p = dm_bufio_read(to_bufio(bm), b, (struct dm_buffer **) result); + p = dm_bufio_read(bm->bufio, b, (struct dm_buffer **) result); if (unlikely(IS_ERR(p))) return PTR_ERR(p); @@ -496,7 +514,7 @@ int dm_bm_read_try_lock(struct dm_block_manager *bm, void *p; int r; - p = dm_bufio_get(to_bufio(bm), b, (struct dm_buffer **) result); + p = dm_bufio_get(bm->bufio, b, (struct dm_buffer **) result); if (unlikely(IS_ERR(p))) return PTR_ERR(p); if (unlikely(!p)) @@ -529,7 +547,7 @@ int dm_bm_write_lock_zero(struct dm_block_manager *bm, struct buffer_aux *aux; void *p; - p = dm_bufio_new(to_bufio(bm), b, (struct dm_buffer **) result); + p = dm_bufio_new(bm->bufio, b, (struct dm_buffer **) result); if (unlikely(IS_ERR(p))) return PTR_ERR(p); @@ -586,7 +604,7 @@ int dm_bm_flush_and_unlock(struct dm_block_manager *bm, { int r; - r = dm_bufio_write_dirty_buffers(to_bufio(bm)); + r = dm_bufio_write_dirty_buffers(bm->bufio); if (unlikely(r)) { dm_bm_unlock(superblock); return r; @@ -594,7 +612,7 @@ int dm_bm_flush_and_unlock(struct dm_block_manager *bm, dm_bm_unlock(superblock); - return dm_bufio_write_dirty_buffers(to_bufio(bm)); + return dm_bufio_write_dirty_buffers(bm->bufio); } u32 dm_bm_checksum(const void *data, size_t len, u32 init_xor) |