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Btrfs: Add btree locking to the tree defragmentation code

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The online btree defragger is simplified and rewritten to use
standard btree searches instead of a walk up / down mechanism.

Signed-off-by: Chris Mason <chris.mason@oracle.com>
This commit is contained in:
Chris Mason
2008-06-25 16:01:31 -04:00
parent a74a4b97b6
commit e7a84565bc
4 changed files with 93 additions and 201 deletions
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fs/btrfs/ctree.h
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@@ -1411,6 +1411,8 @@ int btrfs_previous_item(struct btrfs_root *root,
struct extent_buffer *btrfs_root_node(struct btrfs_root *root);
struct extent_buffer *btrfs_lock_root_node(struct btrfs_root *root);
int btrfs_find_next_key(struct btrfs_root *root, struct btrfs_path *path,
struct btrfs_key *key, int lowest_level);
int btrfs_cow_block(struct btrfs_trans_handle *trans,
struct btrfs_root *root, struct extent_buffer *buf,