diff options
Diffstat (limited to 'fs/btrfs/ctree.c')
| -rw-r--r-- | fs/btrfs/ctree.c | 26 |
1 files changed, 13 insertions, 13 deletions
diff --git a/fs/btrfs/ctree.c b/fs/btrfs/ctree.c index 746dec22f250..92775554d1cc 100644 --- a/fs/btrfs/ctree.c +++ b/fs/btrfs/ctree.c @@ -144,9 +144,10 @@ struct extent_buffer *btrfs_root_node(struct btrfs_root *root) return eb; } -/* cowonly root (everything not a reference counted cow subvolume), just get - * put onto a simple dirty list. transaction.c walks this to make sure they - * get properly updated on disk. +/* + * Cowonly root (not-shareable trees, everything not subvolume or reloc roots), + * just get put onto a simple dirty list. Transaction walks this list to make + * sure they get properly updated on disk. */ static void add_root_to_dirty_list(struct btrfs_root *root) { @@ -185,9 +186,9 @@ int btrfs_copy_root(struct btrfs_trans_handle *trans, int level; struct btrfs_disk_key disk_key; - WARN_ON(test_bit(BTRFS_ROOT_REF_COWS, &root->state) && + WARN_ON(test_bit(BTRFS_ROOT_SHAREABLE, &root->state) && trans->transid != fs_info->running_transaction->transid); - WARN_ON(test_bit(BTRFS_ROOT_REF_COWS, &root->state) && + WARN_ON(test_bit(BTRFS_ROOT_SHAREABLE, &root->state) && trans->transid != root->last_trans); level = btrfs_header_level(buf); @@ -826,12 +827,11 @@ int btrfs_block_can_be_shared(struct btrfs_root *root, struct extent_buffer *buf) { /* - * Tree blocks not in reference counted trees and tree roots - * are never shared. If a block was allocated after the last - * snapshot and the block was not allocated by tree relocation, - * we know the block is not shared. + * Tree blocks not in shareable trees and tree roots are never shared. + * If a block was allocated after the last snapshot and the block was + * not allocated by tree relocation, we know the block is not shared. */ - if (test_bit(BTRFS_ROOT_REF_COWS, &root->state) && + if (test_bit(BTRFS_ROOT_SHAREABLE, &root->state) && buf != root->node && buf != root->commit_root && (btrfs_header_generation(buf) <= btrfs_root_last_snapshot(&root->root_item) || @@ -1024,9 +1024,9 @@ static noinline int __btrfs_cow_block(struct btrfs_trans_handle *trans, btrfs_assert_tree_locked(buf); - WARN_ON(test_bit(BTRFS_ROOT_REF_COWS, &root->state) && + WARN_ON(test_bit(BTRFS_ROOT_SHAREABLE, &root->state) && trans->transid != fs_info->running_transaction->transid); - WARN_ON(test_bit(BTRFS_ROOT_REF_COWS, &root->state) && + WARN_ON(test_bit(BTRFS_ROOT_SHAREABLE, &root->state) && trans->transid != root->last_trans); level = btrfs_header_level(buf); @@ -1065,7 +1065,7 @@ static noinline int __btrfs_cow_block(struct btrfs_trans_handle *trans, return ret; } - if (test_bit(BTRFS_ROOT_REF_COWS, &root->state)) { + if (test_bit(BTRFS_ROOT_SHAREABLE, &root->state)) { ret = btrfs_reloc_cow_block(trans, root, buf, cow); if (ret) { btrfs_abort_transaction(trans, ret); |