SHASH_DESC_ON_STACK(shash, fs_info->csum_shash);
shash->tfm = fs_info->csum_shash;
- crypto_shash_init(shash);
/*
* The super_block structure does not span the whole
* BTRFS_SUPER_INFO_SIZE range, we expect that the unused space is
* filled with zeros and is included in the checksum.
*/
- crypto_shash_update(shash, raw_disk_sb + BTRFS_CSUM_SIZE,
- BTRFS_SUPER_INFO_SIZE - BTRFS_CSUM_SIZE);
- crypto_shash_final(shash, result);
+ crypto_shash_digest(shash, raw_disk_sb + BTRFS_CSUM_SIZE,
+ BTRFS_SUPER_INFO_SIZE - BTRFS_CSUM_SIZE, result);
if (memcmp(disk_sb->csum, result, btrfs_super_csum_size(disk_sb)))
return 1;
else
wq = fs_info->endio_write_workers;
} else {
- if (unlikely(end_io_wq->metadata == BTRFS_WQ_ENDIO_DIO_REPAIR))
- wq = fs_info->endio_repair_workers;
- else if (end_io_wq->metadata == BTRFS_WQ_ENDIO_RAID56)
+ if (end_io_wq->metadata == BTRFS_WQ_ENDIO_RAID56)
wq = fs_info->endio_raid56_workers;
else if (end_io_wq->metadata)
wq = fs_info->endio_meta_workers;
root->root_key.offset = BTRFS_TREE_LOG_OBJECTID;
/*
- * DON'T set REF_COWS for log trees
+ * DON'T set SHAREABLE bit for log trees.
+ *
+ * Log trees are not exposed to user space thus can't be snapshotted,
+ * and they go away before a real commit is actually done.
*
- * log trees do not get reference counted because they go away
- * before a real commit is actually done. They do store pointers
- * to file data extents, and those reference counts still get
- * updated (along with back refs to the log tree).
+ * They do store pointers to file data extents, and those reference
+ * counts still get updated (along with back refs to the log tree).
*/
leaf = btrfs_alloc_tree_block(trans, root, 0, BTRFS_TREE_LOG_OBJECTID,
goto fail;
if (root->root_key.objectid != BTRFS_TREE_LOG_OBJECTID) {
- set_bit(BTRFS_ROOT_REF_COWS, &root->state);
+ set_bit(BTRFS_ROOT_SHAREABLE, &root->state);
btrfs_check_and_init_root_item(&root->root_item);
}
btrfs_destroy_workqueue(fs_info->workers);
btrfs_destroy_workqueue(fs_info->endio_workers);
btrfs_destroy_workqueue(fs_info->endio_raid56_workers);
- btrfs_destroy_workqueue(fs_info->endio_repair_workers);
btrfs_destroy_workqueue(fs_info->rmw_workers);
btrfs_destroy_workqueue(fs_info->endio_write_workers);
btrfs_destroy_workqueue(fs_info->endio_freespace_worker);
fs_info->endio_raid56_workers =
btrfs_alloc_workqueue(fs_info, "endio-raid56", flags,
max_active, 4);
- fs_info->endio_repair_workers =
- btrfs_alloc_workqueue(fs_info, "endio-repair", flags, 1, 0);
fs_info->rmw_workers =
btrfs_alloc_workqueue(fs_info, "rmw", flags, max_active, 2);
fs_info->endio_write_workers =
fs_info->flush_workers &&
fs_info->endio_workers && fs_info->endio_meta_workers &&
fs_info->endio_meta_write_workers &&
- fs_info->endio_repair_workers &&
fs_info->endio_write_workers && fs_info->endio_raid56_workers &&
fs_info->endio_freespace_worker && fs_info->rmw_workers &&
fs_info->caching_workers && fs_info->readahead_workers &&
btrfs_set_super_bytenr(sb, bytenr);
- crypto_shash_init(shash);
- crypto_shash_update(shash, (const char *)sb + BTRFS_CSUM_SIZE,
- BTRFS_SUPER_INFO_SIZE - BTRFS_CSUM_SIZE);
- crypto_shash_final(shash, sb->csum);
+ crypto_shash_digest(shash, (const char *)sb + BTRFS_CSUM_SIZE,
+ BTRFS_SUPER_INFO_SIZE - BTRFS_CSUM_SIZE,
+ sb->csum);
page = find_or_create_page(mapping, bytenr >> PAGE_SHIFT,
GFP_NOFS);