From eb60ceac0ebd11e9896ed1ca84fcad71a4b23601 Mon Sep 17 00:00:00 2001 From: Chris Mason Date: Fri, 2 Feb 2007 09:18:22 -0500 Subject: Btrfs: Add backing store, memory management Signed-off-by: Chris Mason --- fs/btrfs/disk-io.h | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+) create mode 100644 fs/btrfs/disk-io.h (limited to 'fs/btrfs/disk-io.h') diff --git a/fs/btrfs/disk-io.h b/fs/btrfs/disk-io.h new file mode 100644 index 000000000000..ee95fa05c4a3 --- /dev/null +++ b/fs/btrfs/disk-io.h @@ -0,0 +1,21 @@ +#ifndef __DISKIO__ +#define __DISKIO__ + +struct tree_buffer { + u64 blocknr; + int count; + union { + struct node node; + struct leaf leaf; + }; +}; + +struct tree_buffer *read_tree_block(struct ctree_root *root, u64 blocknr); +int write_tree_block(struct ctree_root *root, struct tree_buffer *buf); +struct ctree_root *open_ctree(char *filename); +int close_ctree(struct ctree_root *root); +void tree_block_release(struct ctree_root *root, struct tree_buffer *buf); +struct tree_buffer *alloc_free_block(struct ctree_root *root); +int update_root_block(struct ctree_root *root); + +#endif -- cgit v1.2.3