Btrfs: Create extent_buffer interface for large blocksizes

Signed-off-by: Chris Mason <chris.mason@oracle.com>

1 files changed, 11 insertions, 44 deletions

diff --git a/fs/btrfs/disk-io.h b/fs/btrfs/disk-io.h
index fc6b520..70d9413 100644
--- a/fs/btrfs/disk-io.h
+++ b/fs/btrfs/disk-io.h
@@ -19,68 +19,35 @@
 #ifndef __DISKIO__
 #define __DISKIO__
 
-#include <linux/buffer_head.h>
-
 #define BTRFS_SUPER_INFO_OFFSET (16 * 1024)
 
-enum btrfs_bh_state_bits {
-	BH_Checked = BH_PrivateStart,
-	BH_Defrag,
-	BH_DefragDone,
-};
-BUFFER_FNS(Checked, checked);
-BUFFER_FNS(Defrag, defrag);
-BUFFER_FNS(DefragDone, defrag_done);
-
-static inline struct btrfs_node *btrfs_buffer_node(struct buffer_head *bh)
-{
-	return (struct btrfs_node *)bh->b_data;
-}
-
-static inline struct btrfs_leaf *btrfs_buffer_leaf(struct buffer_head *bh)
-{
-	return (struct btrfs_leaf *)bh->b_data;
-}
-
-static inline struct btrfs_header *btrfs_buffer_header(struct buffer_head *bh)
-{
-	return &((struct btrfs_node *)bh->b_data)->header;
-}
-
-struct buffer_head *read_tree_block(struct btrfs_root *root, u64 blocknr);
+struct extent_buffer *read_tree_block(struct btrfs_root *root, u64 blocknr);
 int readahead_tree_block(struct btrfs_root *root, u64 blocknr);
-struct buffer_head *btrfs_find_create_tree_block(struct btrfs_root *root,
-						 u64 blocknr);
-int write_tree_block(struct btrfs_trans_handle *trans, struct btrfs_root *root,
-		     struct buffer_head *buf);
-int dirty_tree_block(struct btrfs_trans_handle *trans, struct btrfs_root *root,
-		     struct buffer_head *buf);
+struct extent_buffer *btrfs_find_create_tree_block(struct btrfs_root *root,
+						   u64 blocknr);
 int clean_tree_block(struct btrfs_trans_handle *trans,
-		     struct btrfs_root *root, struct buffer_head *buf);
-int btrfs_commit_transaction(struct btrfs_trans_handle *trans,
-			     struct btrfs_root *root);
+		     struct btrfs_root *root, struct extent_buffer *buf);
 struct btrfs_root *open_ctree(struct super_block *sb);
 int close_ctree(struct btrfs_root *root);
-void btrfs_block_release(struct btrfs_root *root, struct buffer_head *buf);
 int write_ctree_super(struct btrfs_trans_handle *trans,
 		      struct btrfs_root *root);
-struct buffer_head *btrfs_find_tree_block(struct btrfs_root *root, u64 blocknr);
-int btrfs_csum_data(struct btrfs_root * root, char *data, size_t len,
-		    char *result);
+struct extent_buffer *btrfs_find_tree_block(struct btrfs_root *root,
+					    u64 blocknr);
 struct btrfs_root *btrfs_read_fs_root(struct btrfs_fs_info *fs_info,
 				      struct btrfs_key *location,
 				      const char *name, int namelen);
 struct btrfs_root *btrfs_read_fs_root_no_radix(struct btrfs_fs_info *fs_info,
 					       struct btrfs_key *location);
-u64 bh_blocknr(struct buffer_head *bh);
 int btrfs_insert_dev_radix(struct btrfs_root *root,
 			   struct block_device *bdev,
 			   u64 device_id,
 			   u64 block_start,
 			   u64 num_blocks);
-int btrfs_map_bh_to_logical(struct btrfs_root *root, struct buffer_head *bh,
-			     u64 logical);
 void btrfs_btree_balance_dirty(struct btrfs_root *root, unsigned long nr);
 int btrfs_free_fs_root(struct btrfs_fs_info *fs_info, struct btrfs_root *root);
-void btrfs_mark_buffer_dirty(struct buffer_head *bh);
+void btrfs_mark_buffer_dirty(struct extent_buffer *buf);
+int btrfs_buffer_uptodate(struct extent_buffer *buf);
+int btrfs_set_buffer_uptodate(struct extent_buffer *buf);
+int wait_on_tree_block_writeback(struct btrfs_root *root,
+				 struct extent_buffer *buf);
 #endif