rename funcs and structs to btrfs

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

fs/btrfs/ctree.c

@@ -6,47 +6,47 @@
 #include "disk-io.h"
 #include "print-tree.h"
 
-static int split_node(struct ctree_root *root, struct ctree_path *path,
+static int split_node(struct btrfs_root *root, struct btrfs_path *path,
 		      int level);
-static int split_leaf(struct ctree_root *root, struct ctree_path *path,
+static int split_leaf(struct btrfs_root *root, struct btrfs_path *path,
 		      int data_size);
-static int push_node_left(struct ctree_root *root, struct tree_buffer *dst,
-			  struct tree_buffer *src);
-static int balance_node_right(struct ctree_root *root,
-			      struct tree_buffer *dst_buf,
-			      struct tree_buffer *src_buf);
-static int del_ptr(struct ctree_root *root, struct ctree_path *path, int level,
+static int push_node_left(struct btrfs_root *root, struct btrfs_buffer *dst,
+			  struct btrfs_buffer *src);
+static int balance_node_right(struct btrfs_root *root,
+			      struct btrfs_buffer *dst_buf,
+			      struct btrfs_buffer *src_buf);
+static int del_ptr(struct btrfs_root *root, struct btrfs_path *path, int level,
 		   int slot);
 
-inline void init_path(struct ctree_path *p)
+inline void btrfs_init_path(struct btrfs_path *p)
 {
 	memset(p, 0, sizeof(*p));
 }
 
-void release_path(struct ctree_root *root, struct ctree_path *p)
+void btrfs_release_path(struct btrfs_root *root, struct btrfs_path *p)
 {
 	int i;
-	for (i = 0; i < MAX_LEVEL; i++) {
+	for (i = 0; i < BTRFS_MAX_LEVEL; i++) {
 		if (!p->nodes[i])
 			break;
-		tree_block_release(root, p->nodes[i]);
+		btrfs_block_release(root, p->nodes[i]);
 	}
 	memset(p, 0, sizeof(*p));
 }
 
-int btrfs_cow_block(struct ctree_root *root,
-		    struct tree_buffer *buf,
-		    struct tree_buffer *parent,
+int btrfs_cow_block(struct btrfs_root *root,
+		    struct btrfs_buffer *buf,
+		    struct btrfs_buffer *parent,
 		    int parent_slot,
-		    struct tree_buffer **cow_ret)
+		    struct btrfs_buffer **cow_ret)
 {
-	struct tree_buffer *cow;
+	struct btrfs_buffer *cow;
 
 	if (!list_empty(&buf->dirty)) {
 		*cow_ret = buf;
 		return 0;
 	}
-	cow = alloc_free_block(root);
+	cow = btrfs_alloc_free_block(root);
 	memcpy(&cow->node, &buf->node, sizeof(buf->node));
 	btrfs_set_header_blocknr(&cow->node.header, cow->blocknr);
 	*cow_ret = cow;
@@ -55,15 +55,15 @@ int btrfs_cow_block(struct ctree_root *root,
 		root->node = cow;
 		cow->count++;
 		if (buf != root->commit_root)
-			free_extent(root, buf->blocknr, 1);
-		tree_block_release(root, buf);
+			btrfs_free_extent(root, buf->blocknr, 1);
+		btrfs_block_release(root, buf);
 	} else {
 		btrfs_set_node_blockptr(&parent->node, parent_slot,
 					cow->blocknr);
 		BUG_ON(list_empty(&parent->dirty));
-		free_extent(root, buf->blocknr, 1);
+		btrfs_free_extent(root, buf->blocknr, 1);
 	}
-	tree_block_release(root, buf);
+	btrfs_block_release(root, buf);
 	return 0;
 }
 
@@ -72,7 +72,7 @@ int btrfs_cow_block(struct ctree_root *root,
  * this returns the address of the start of the last item,
  * which is the stop of the leaf data stack
  */
-static inline unsigned int leaf_data_end(struct leaf *leaf)
+static inline unsigned int leaf_data_end(struct btrfs_leaf *leaf)
 {
 	u32 nr = btrfs_header_nritems(&leaf->header);
 	if (nr == 0)
@@ -85,7 +85,7 @@ static inline unsigned int leaf_data_end(struct leaf *leaf)
  * the start of the leaf data.  IOW, how much room
  * the leaf has left for both items and data
  */
-int leaf_free_space(struct leaf *leaf)
+int btrfs_leaf_free_space(struct btrfs_leaf *leaf)
 {
 	int data_end = leaf_data_end(leaf);
 	int nritems = btrfs_header_nritems(&leaf->header);
@@ -117,11 +117,11 @@ int comp_keys(struct btrfs_disk_key *disk, struct btrfs_key *k2)
 	return 0;
 }
 
-int check_node(struct ctree_path *path, int level)
+int check_node(struct btrfs_path *path, int level)
 {
 	int i;
-	struct node *parent = NULL;
-	struct node *node = &path->nodes[level]->node;
+	struct btrfs_node *parent = NULL;
+	struct btrfs_node *node = &path->nodes[level]->node;
 	int parent_slot;
 	u32 nritems = btrfs_header_nritems(&node->header);
 
@@ -146,18 +146,18 @@ int check_node(struct ctree_path *path, int level)
 	return 0;
 }
 
-int check_leaf(struct ctree_path *path, int level)
+int check_leaf(struct btrfs_path *path, int level)
 {
 	int i;
-	struct leaf *leaf = &path->nodes[level]->leaf;
-	struct node *parent = NULL;
+	struct btrfs_leaf *leaf = &path->nodes[level]->leaf;
+	struct btrfs_node *parent = NULL;
 	int parent_slot;
 	u32 nritems = btrfs_header_nritems(&leaf->header);
 
 	if (path->nodes[level + 1])
 		parent = &path->nodes[level + 1]->node;
 	parent_slot = path->slots[level + 1];
-	BUG_ON(leaf_free_space(leaf) < 0);
+	BUG_ON(btrfs_leaf_free_space(leaf) < 0);
 
 	if (nritems == 0)
 		return 0;
@@ -186,7 +186,7 @@ int check_leaf(struct ctree_path *path, int level)
 	return 0;
 }
 
-int check_block(struct ctree_path *path, int level)
+int check_block(struct btrfs_path *path, int level)
 {
 	if (level == 0)
 		return check_leaf(path, level);
@@ -233,10 +233,10 @@ int generic_bin_search(char *p, int item_size, struct btrfs_key *key,
  * simple bin_search frontend that does the right thing for
  * leaves vs nodes
  */
-int bin_search(struct node *c, struct btrfs_key *key, int *slot)
+int bin_search(struct btrfs_node *c, struct btrfs_key *key, int *slot)
 {
 	if (btrfs_is_leaf(c)) {
-		struct leaf *l = (struct leaf *)c;
+		struct btrfs_leaf *l = (struct btrfs_leaf *)c;
 		return generic_bin_search((void *)l->items,
 					  sizeof(struct btrfs_item),
 					  key, btrfs_header_nritems(&c->header),
@@ -250,11 +250,11 @@ int bin_search(struct node *c, struct btrfs_key *key, int *slot)
 	return -1;
 }
 
-struct tree_buffer *read_node_slot(struct ctree_root *root,
-				   struct tree_buffer *parent_buf,
+struct btrfs_buffer *read_node_slot(struct btrfs_root *root,
+				   struct btrfs_buffer *parent_buf,
 				   int slot)
 {
-	struct node *node = &parent_buf->node;
+	struct btrfs_node *node = &parent_buf->node;
 	if (slot < 0)
 		return NULL;
 	if (slot >= btrfs_header_nritems(&node->header))
@@ -262,17 +262,17 @@ struct tree_buffer *read_node_slot(struct ctree_root *root,
 	return read_tree_block(root, btrfs_node_blockptr(node, slot));
 }
 
-static int balance_level(struct ctree_root *root, struct ctree_path *path,
+static int balance_level(struct btrfs_root *root, struct btrfs_path *path,
 			int level)
 {
-	struct tree_buffer *right_buf;
-	struct tree_buffer *mid_buf;
-	struct tree_buffer *left_buf;
-	struct tree_buffer *parent_buf = NULL;
-	struct node *right = NULL;
-	struct node *mid;
-	struct node *left = NULL;
-	struct node *parent = NULL;
+	struct btrfs_buffer *right_buf;
+	struct btrfs_buffer *mid_buf;
+	struct btrfs_buffer *left_buf;
+	struct btrfs_buffer *parent_buf = NULL;
+	struct btrfs_node *right = NULL;
+	struct btrfs_node *mid;
+	struct btrfs_node *left = NULL;
+	struct btrfs_node *parent = NULL;
 	int ret = 0;
 	int wret;
 	int pslot;
@@ -286,12 +286,12 @@ static int balance_level(struct ctree_root *root, struct ctree_path *path,
 	mid = &mid_buf->node;
 	orig_ptr = btrfs_node_blockptr(mid, orig_slot);
 
-	if (level < MAX_LEVEL - 1)
+	if (level < BTRFS_MAX_LEVEL - 1)
 		parent_buf = path->nodes[level + 1];
 	pslot = path->slots[level + 1];
 
 	if (!parent_buf) {
-		struct tree_buffer *child;
+		struct btrfs_buffer *child;
 		u64 blocknr = mid_buf->blocknr;
 
 		if (btrfs_header_nritems(&mid->header) != 1)
@@ -303,11 +303,11 @@ static int balance_level(struct ctree_root *root, struct ctree_path *path,
 		root->node = child;
 		path->nodes[level] = NULL;
 		/* once for the path */
-		tree_block_release(root, mid_buf);
+		btrfs_block_release(root, mid_buf);
 		/* once for the root ptr */
-		tree_block_release(root, mid_buf);
+		btrfs_block_release(root, mid_buf);
 		clean_tree_block(root, mid_buf);
-		return free_extent(root, blocknr, 1);
+		return btrfs_free_extent(root, blocknr, 1);
 	}
 	parent = &parent_buf->node;
 
@@ -340,14 +340,14 @@ static int balance_level(struct ctree_root *root, struct ctree_path *path,
 			ret = wret;
 		if (btrfs_header_nritems(&right->header) == 0) {
 			u64 blocknr = right_buf->blocknr;
-			tree_block_release(root, right_buf);
+			btrfs_block_release(root, right_buf);
 			clean_tree_block(root, right_buf);
 			right_buf = NULL;
 			right = NULL;
 			wret = del_ptr(root, path, level + 1, pslot + 1);
 			if (wret)
 				ret = wret;
-			wret = free_extent(root, blocknr, 1);
+			wret = btrfs_free_extent(root, blocknr, 1);
 			if (wret)
 				ret = wret;
 		} else {
@@ -375,14 +375,14 @@ static int balance_level(struct ctree_root *root, struct ctree_path *path,
 	if (btrfs_header_nritems(&mid->header) == 0) {
 		/* we've managed to empty the middle node, drop it */
 		u64 blocknr = mid_buf->blocknr;
-		tree_block_release(root, mid_buf);
+		btrfs_block_release(root, mid_buf);
 		clean_tree_block(root, mid_buf);
 		mid_buf = NULL;
 		mid = NULL;
 		wret = del_ptr(root, path, level + 1, pslot);
 		if (wret)
 			ret = wret;
-		wret = free_extent(root, blocknr, 1);
+		wret = btrfs_free_extent(root, blocknr, 1);
 		if (wret)
 			ret = wret;
 	} else {
@@ -400,7 +400,7 @@ static int balance_level(struct ctree_root *root, struct ctree_path *path,
 			path->slots[level + 1] -= 1;
 			path->slots[level] = orig_slot;
 			if (mid_buf)
-				tree_block_release(root, mid_buf);
+				btrfs_block_release(root, mid_buf);
 		} else {
 			orig_slot -= btrfs_header_nritems(&left->header);
 			path->slots[level] = orig_slot;
@@ -413,9 +413,9 @@ static int balance_level(struct ctree_root *root, struct ctree_path *path,
 		BUG();
 
 	if (right_buf)
-		tree_block_release(root, right_buf);
+		btrfs_block_release(root, right_buf);
 	if (left_buf)
-		tree_block_release(root, left_buf);
+		btrfs_block_release(root, left_buf);
 	return ret;
 }
 
@@ -432,12 +432,12 @@ static int balance_level(struct ctree_root *root, struct ctree_path *path,
  * tree.  if ins_len < 0, nodes will be merged as we walk down the tree (if
  * possible)
  */
-int search_slot(struct ctree_root *root, struct btrfs_key *key,
-		struct ctree_path *p, int ins_len, int cow)
+int btrfs_search_slot(struct btrfs_root *root, struct btrfs_key *key,
+		struct btrfs_path *p, int ins_len, int cow)
 {
-	struct tree_buffer *b;
-	struct tree_buffer *cow_buf;
-	struct node *c;
+	struct btrfs_buffer *b;
+	struct btrfs_buffer *cow_buf;
+	struct btrfs_node *c;
 	int slot;
 	int ret;
 	int level;
@@ -486,9 +486,9 @@ again:
 			}
 			b = read_tree_block(root, btrfs_node_blockptr(c, slot));
 		} else {
-			struct leaf *l = (struct leaf *)c;
+			struct btrfs_leaf *l = (struct btrfs_leaf *)c;
 			p->slots[level] = slot;
-			if (ins_len > 0 && leaf_free_space(l) <
+			if (ins_len > 0 && btrfs_leaf_free_space(l) <
 			    sizeof(struct btrfs_item) + ins_len) {
 				int sret = split_leaf(root, p, ins_len);
 				BUG_ON(sret > 0);
@@ -513,14 +513,14 @@ again:
  * If this fails to write a tree block, it returns -1, but continues
  * fixing up the blocks in ram so the tree is consistent.
  */
-static int fixup_low_keys(struct ctree_root *root,
-			   struct ctree_path *path, struct btrfs_disk_key *key,
+static int fixup_low_keys(struct btrfs_root *root,
+			   struct btrfs_path *path, struct btrfs_disk_key *key,
 			   int level)
 {
 	int i;
 	int ret = 0;
-	for (i = level; i < MAX_LEVEL; i++) {
-		struct node *t;
+	for (i = level; i < BTRFS_MAX_LEVEL; i++) {
+		struct btrfs_node *t;
 		int tslot = path->slots[i];
 		if (!path->nodes[i])
 			break;
@@ -540,11 +540,11 @@ static int fixup_low_keys(struct ctree_root *root,
  * returns 0 if some ptrs were pushed left, < 0 if there was some horrible
  * error, and > 0 if there was no room in the left hand block.
  */
-static int push_node_left(struct ctree_root *root, struct tree_buffer *dst_buf,
-			  struct tree_buffer *src_buf)
+static int push_node_left(struct btrfs_root *root, struct btrfs_buffer *dst_buf,
+			  struct btrfs_buffer *src_buf)
 {
-	struct node *src = &src_buf->node;
-	struct node *dst = &dst_buf->node;
+	struct btrfs_node *src = &src_buf->node;
+	struct btrfs_node *dst = &dst_buf->node;
 	int push_items = 0;
 	int src_nritems;
 	int dst_nritems;
@@ -587,12 +587,12 @@ static int push_node_left(struct ctree_root *root, struct tree_buffer *dst_buf,
  *
  * this will  only push up to 1/2 the contents of the left node over
  */
-static int balance_node_right(struct ctree_root *root,
-			      struct tree_buffer *dst_buf,
-			      struct tree_buffer *src_buf)
+static int balance_node_right(struct btrfs_root *root,
+			      struct btrfs_buffer *dst_buf,
+			      struct btrfs_buffer *src_buf)
 {
-	struct node *src = &src_buf->node;
-	struct node *dst = &dst_buf->node;
+	struct btrfs_node *src = &src_buf->node;
+	struct btrfs_node *dst = &dst_buf->node;
 	int push_items = 0;
 	int max_push;
 	int src_nritems;
@@ -637,18 +637,18 @@ static int balance_node_right(struct ctree_root *root,
  *
  * returns zero on success or < 0 on failure.
  */
-static int insert_new_root(struct ctree_root *root,
-			   struct ctree_path *path, int level)
+static int insert_new_root(struct btrfs_root *root,
+			   struct btrfs_path *path, int level)
 {
-	struct tree_buffer *t;
-	struct node *lower;
-	struct node *c;
+	struct btrfs_buffer *t;
+	struct btrfs_node *lower;
+	struct btrfs_node *c;
 	struct btrfs_disk_key *lower_key;
 
 	BUG_ON(path->nodes[level]);
 	BUG_ON(path->nodes[level-1] != root->node);
 
-	t = alloc_free_block(root);
+	t = btrfs_alloc_free_block(root);
 	c = &t->node;
 	memset(c, 0, sizeof(c));
 	btrfs_set_header_nritems(&c->header, 1);
@@ -658,13 +658,13 @@ static int insert_new_root(struct ctree_root *root,
 	                       btrfs_header_parentid(&root->node->node.header));
 	lower = &path->nodes[level-1]->node;
 	if (btrfs_is_leaf(lower))
-		lower_key = &((struct leaf *)lower)->items[0].key;
+		lower_key = &((struct btrfs_leaf *)lower)->items[0].key;
 	else
 		lower_key = lower->keys;
 	memcpy(c->keys, lower_key, sizeof(struct btrfs_disk_key));
 	btrfs_set_node_blockptr(c, 0, path->nodes[level - 1]->blocknr);
 	/* the super has an extra ref to root->node */
-	tree_block_release(root, root->node);
+	btrfs_block_release(root, root->node);
 	root->node = t;
 	t->count++;
 	path->nodes[level] = t;
@@ -681,11 +681,11 @@ static int insert_new_root(struct ctree_root *root,
  *
  * returns zero on success and < 0 on any error
  */
-static int insert_ptr(struct ctree_root *root,
-		struct ctree_path *path, struct btrfs_disk_key *key,
+static int insert_ptr(struct btrfs_root *root,
+		struct btrfs_path *path, struct btrfs_disk_key *key,
 		u64 blocknr, int slot, int level)
 {
-	struct node *lower;
+	struct btrfs_node *lower;
 	int nritems;
 
 	BUG_ON(!path->nodes[level]);
@@ -719,13 +719,13 @@ static int insert_ptr(struct ctree_root *root,
  *
  * returns 0 on success and < 0 on failure
  */
-static int split_node(struct ctree_root *root, struct ctree_path *path,
+static int split_node(struct btrfs_root *root, struct btrfs_path *path,
 		      int level)
 {
-	struct tree_buffer *t;
-	struct node *c;
-	struct tree_buffer *split_buffer;
-	struct node *split;
+	struct btrfs_buffer *t;
+	struct btrfs_node *c;
+	struct btrfs_buffer *split_buffer;
+	struct btrfs_node *split;
 	int mid;
 	int ret;
 	int wret;
@@ -740,7 +740,7 @@ static int split_node(struct ctree_root *root, struct ctree_path *path,
 			return ret;
 	}
 	c_nritems = btrfs_header_nritems(&c->header);
-	split_buffer = alloc_free_block(root);
+	split_buffer = btrfs_alloc_free_block(root);
 	split = &split_buffer->node;
 	btrfs_set_header_flags(&split->header, btrfs_header_flags(&c->header));
 	btrfs_set_header_blocknr(&split->header, split_buffer->blocknr);
@@ -763,11 +763,11 @@ static int split_node(struct ctree_root *root, struct ctree_path *path,
 
 	if (path->slots[level] >= mid) {
 		path->slots[level] -= mid;
-		tree_block_release(root, t);
+		btrfs_block_release(root, t);
 		path->nodes[level] = split_buffer;
 		path->slots[level + 1] += 1;
 	} else {
-		tree_block_release(root, split_buffer);
+		btrfs_block_release(root, split_buffer);
 	}
 	return ret;
 }
@@ -777,7 +777,7 @@ static int split_node(struct ctree_root *root, struct ctree_path *path,
  * and nr indicate which items in the leaf to check.  This totals up the
  * space used both by the item structs and the item data
  */
-static int leaf_space_used(struct leaf *l, int start, int nr)
+static int leaf_space_used(struct btrfs_leaf *l, int start, int nr)
 {
 	int data_len;
 	int end = start + nr - 1;
@@ -797,14 +797,14 @@ static int leaf_space_used(struct leaf *l, int start, int nr)
  * returns 1 if the push failed because the other node didn't have enough
  * room, 0 if everything worked out and < 0 if there were major errors.
  */
-static int push_leaf_right(struct ctree_root *root, struct ctree_path *path,
+static int push_leaf_right(struct btrfs_root *root, struct btrfs_path *path,
 			   int data_size)
 {
-	struct tree_buffer *left_buf = path->nodes[0];
-	struct leaf *left = &left_buf->leaf;
-	struct leaf *right;
-	struct tree_buffer *right_buf;
-	struct tree_buffer *upper;
+	struct btrfs_buffer *left_buf = path->nodes[0];
+	struct btrfs_leaf *left = &left_buf->leaf;
+	struct btrfs_leaf *right;
+	struct btrfs_buffer *right_buf;
+	struct btrfs_buffer *upper;
 	int slot;
 	int i;
 	int free_space;
@@ -825,17 +825,17 @@ static int push_leaf_right(struct ctree_root *root, struct ctree_path *path,
 	right_buf = read_tree_block(root, btrfs_node_blockptr(&upper->node,
 							      slot + 1));
 	right = &right_buf->leaf;
-	free_space = leaf_free_space(right);
+	free_space = btrfs_leaf_free_space(right);
 	if (free_space < data_size + sizeof(struct btrfs_item)) {
-		tree_block_release(root, right_buf);
+		btrfs_block_release(root, right_buf);
 		return 1;
 	}
 	/* cow and double check */
 	btrfs_cow_block(root, right_buf, upper, slot + 1, &right_buf);
 	right = &right_buf->leaf;
-	free_space = leaf_free_space(right);
+	free_space = btrfs_leaf_free_space(right);
 	if (free_space < data_size + sizeof(struct btrfs_item)) {
-		tree_block_release(root, right_buf);
+		btrfs_block_release(root, right_buf);
 		return 1;
 	}
 
@@ -851,7 +851,7 @@ static int push_leaf_right(struct ctree_root *root, struct ctree_path *path,
 		push_space += btrfs_item_size(item) + sizeof(*item);
 	}
 	if (push_items == 0) {
-		tree_block_release(root, right_buf);
+		btrfs_block_release(root, right_buf);
 		return 1;
 	}
 	right_nritems = btrfs_header_nritems(&right->header);
@@ -893,11 +893,11 @@ static int push_leaf_right(struct ctree_root *root, struct ctree_path *path,
 	/* then fixup the leaf pointer in the path */
 	if (path->slots[0] >= left_nritems) {
 		path->slots[0] -= left_nritems;
-		tree_block_release(root, path->nodes[0]);
+		btrfs_block_release(root, path->nodes[0]);
 		path->nodes[0] = right_buf;
 		path->slots[1] += 1;
 	} else {
-		tree_block_release(root, right_buf);
+		btrfs_block_release(root, right_buf);
 	}
 	return 0;
 }
@@ -905,13 +905,13 @@ static int push_leaf_right(struct ctree_root *root, struct ctree_path *path,
  * push some data in the path leaf to the left, trying to free up at
  * least data_size bytes.  returns zero if the push worked, nonzero otherwise
  */
-static int push_leaf_left(struct ctree_root *root, struct ctree_path *path,
+static int push_leaf_left(struct btrfs_root *root, struct btrfs_path *path,
 			  int data_size)
 {
-	struct tree_buffer *right_buf = path->nodes[0];
-	struct leaf *right = &right_buf->leaf;
-	struct tree_buffer *t;
-	struct leaf *left;
+	struct btrfs_buffer *right_buf = path->nodes[0];
+	struct btrfs_leaf *right = &right_buf->leaf;
+	struct btrfs_buffer *t;
+	struct btrfs_leaf *left;
 	int slot;
 	int i;
 	int free_space;
@@ -932,18 +932,18 @@ static int push_leaf_left(struct ctree_root *root, struct ctree_path *path,
 	t = read_tree_block(root, btrfs_node_blockptr(&path->nodes[1]->node,
 						      slot - 1));
 	left = &t->leaf;
-	free_space = leaf_free_space(left);
+	free_space = btrfs_leaf_free_space(left);
 	if (free_space < data_size + sizeof(struct btrfs_item)) {
-		tree_block_release(root, t);
+		btrfs_block_release(root, t);
 		return 1;
 	}
 
 	/* cow and double check */
 	btrfs_cow_block(root, t, path->nodes[1], slot - 1, &t);
 	left = &t->leaf;
-	free_space = leaf_free_space(left);
+	free_space = btrfs_leaf_free_space(left);
 	if (free_space < data_size + sizeof(struct btrfs_item)) {
-		tree_block_release(root, t);
+		btrfs_block_release(root, t);
 		return 1;
 	}
 
@@ -958,7 +958,7 @@ static int push_leaf_left(struct ctree_root *root, struct ctree_path *path,
 		push_space += btrfs_item_size(item) + sizeof(*item);
 	}
 	if (push_items == 0) {
-		tree_block_release(root, t);
+		btrfs_block_release(root, t);
 		return 1;
 	}
 	/* push data from right to left */
@@ -1009,11 +1009,11 @@ static int push_leaf_left(struct ctree_root *root, struct ctree_path *path,
 	/* then fixup the leaf pointer in the path */
 	if (path->slots[0] < push_items) {
 		path->slots[0] += old_left_nritems;
-		tree_block_release(root, path->nodes[0]);
+		btrfs_block_release(root, path->nodes[0]);
 		path->nodes[0] = t;
 		path->slots[1] -= 1;
 	} else {
-		tree_block_release(root, t);
+		btrfs_block_release(root, t);
 		path->slots[0] -= push_items;
 	}
 	BUG_ON(path->slots[0] < 0);
@@ -1026,16 +1026,16 @@ static int push_leaf_left(struct ctree_root *root, struct ctree_path *path,
  *
  * returns 0 if all went well and < 0 on failure.
  */
-static int split_leaf(struct ctree_root *root, struct ctree_path *path,
+static int split_leaf(struct btrfs_root *root, struct btrfs_path *path,
 		      int data_size)
 {
-	struct tree_buffer *l_buf;
-	struct leaf *l;
+	struct btrfs_buffer *l_buf;
+	struct btrfs_leaf *l;
 	u32 nritems;
 	int mid;
 	int slot;
-	struct leaf *right;
-	struct tree_buffer *right_buffer;
+	struct btrfs_leaf *right;
+	struct btrfs_buffer *right_buffer;
 	int space_needed = data_size + sizeof(struct btrfs_item);
 	int data_copy_size;
 	int rt_data_off;
@@ -1047,7 +1047,7 @@ static int split_leaf(struct ctree_root *root, struct ctree_path *path,
 	l = &l_buf->leaf;
 
 	/* did the pushes work? */
-	if (leaf_free_space(l) >= sizeof(struct btrfs_item) + data_size)
+	if (btrfs_leaf_free_space(l) >= sizeof(struct btrfs_item) + data_size)
 		return 0;
 
 	if (!path->nodes[1]) {
@@ -1058,7 +1058,7 @@ static int split_leaf(struct ctree_root *root, struct ctree_path *path,
 	slot = path->slots[0];
 	nritems = btrfs_header_nritems(&l->header);
 	mid = (nritems + 1)/ 2;
-	right_buffer = alloc_free_block(root);
+	right_buffer = btrfs_alloc_free_block(root);
 	BUG_ON(!right_buffer);
 	BUG_ON(mid == nritems);
 	right = &right_buffer->leaf;
@@ -1101,12 +1101,12 @@ static int split_leaf(struct ctree_root *root, struct ctree_path *path,
 	BUG_ON(list_empty(&l_buf->dirty));
 	BUG_ON(path->slots[0] != slot);
 	if (mid <= slot) {
-		tree_block_release(root, path->nodes[0]);
+		btrfs_block_release(root, path->nodes[0]);
 		path->nodes[0] = right_buffer;
 		path->slots[0] -= mid;
 		path->slots[1] += 1;
 	} else
-		tree_block_release(root, right_buffer);
+		btrfs_block_release(root, right_buffer);
 	BUG_ON(path->slots[0] < 0);
 	return ret;
 }
@@ -1115,17 +1115,17 @@ static int split_leaf(struct ctree_root *root, struct ctree_path *path,
  * Given a key and some data, insert an item into the tree.
  * This does all the path init required, making room in the tree if needed.
  */
-int insert_item(struct ctree_root *root, struct btrfs_key *cpu_key,
+int btrfs_insert_item(struct btrfs_root *root, struct btrfs_key *cpu_key,
 			  void *data, int data_size)
 {
 	int ret = 0;
 	int slot;
 	int slot_orig;
-	struct leaf *leaf;
-	struct tree_buffer *leaf_buf;
+	struct btrfs_leaf *leaf;
+	struct btrfs_buffer *leaf_buf;
 	u32 nritems;
 	unsigned int data_end;
-	struct ctree_path path;
+	struct btrfs_path path;
 	struct btrfs_disk_key disk_key;
 
 	btrfs_cpu_key_to_disk(&disk_key, cpu_key);
@@ -1133,10 +1133,10 @@ int insert_item(struct ctree_root *root, struct btrfs_key *cpu_key,
 	/* create a root if there isn't one */
 	if (!root->node)
 		BUG();
-	init_path(&path);
-	ret = search_slot(root, cpu_key, &path, data_size, 1);
+	btrfs_init_path(&path);
+	ret = btrfs_search_slot(root, cpu_key, &path, data_size, 1);
 	if (ret == 0) {
-		release_path(root, &path);
+		btrfs_release_path(root, &path);
 		return -EEXIST;
 	}
 	if (ret < 0)
@@ -1149,7 +1149,8 @@ int insert_item(struct ctree_root *root, struct btrfs_key *cpu_key,
 	nritems = btrfs_header_nritems(&leaf->header);
 	data_end = leaf_data_end(leaf);
 
-	if (leaf_free_space(leaf) <  sizeof(struct btrfs_item) + data_size)
+	if (btrfs_leaf_free_space(leaf) <
+	    sizeof(struct btrfs_item) + data_size)
 		BUG();
 
 	slot = path.slots[0];
@@ -1190,11 +1191,11 @@ int insert_item(struct ctree_root *root, struct btrfs_key *cpu_key,
 		ret = fixup_low_keys(root, &path, &disk_key, 1);
 
 	BUG_ON(list_empty(&leaf_buf->dirty));
-	if (leaf_free_space(leaf) < 0)
+	if (btrfs_leaf_free_space(leaf) < 0)
 		BUG();
 	check_leaf(&path, 0);
 out:
-	release_path(root, &path);
+	btrfs_release_path(root, &path);
 	return ret;
 }
 
@@ -1205,11 +1206,11 @@ out:
  * continuing all the way the root if required.  The root is converted into
  * a leaf if all the nodes are emptied.
  */
-static int del_ptr(struct ctree_root *root, struct ctree_path *path, int level,
+static int del_ptr(struct btrfs_root *root, struct btrfs_path *path, int level,
 		   int slot)
 {
-	struct node *node;
-	struct tree_buffer *parent = path->nodes[level];
+	struct btrfs_node *node;
+	struct btrfs_buffer *parent = path->nodes[level];
 	u32 nritems;
 	int ret = 0;
 	int wret;
@@ -1242,11 +1243,11 @@ static int del_ptr(struct ctree_root *root, struct ctree_path *path, int level,
  * delete the item at the leaf level in path.  If that empties
  * the leaf, remove it from the tree
  */
-int del_item(struct ctree_root *root, struct ctree_path *path)
+int btrfs_del_item(struct btrfs_root *root, struct btrfs_path *path)
 {
 	int slot;
-	struct leaf *leaf;
-	struct tree_buffer *leaf_buf;
+	struct btrfs_leaf *leaf;
+	struct btrfs_buffer *leaf_buf;
 	int doff;
 	int dsize;
 	int ret = 0;
@@ -1286,7 +1287,7 @@ int del_item(struct ctree_root *root, struct ctree_path *path)
 			wret = del_ptr(root, path, 1, path->slots[1]);
 			if (wret)
 				ret = wret;
-			wret = free_extent(root, leaf_buf->blocknr, 1);
+			wret = btrfs_free_extent(root, leaf_buf->blocknr, 1);
 			if (wret)
 				ret = wret;
 		}
@@ -1323,12 +1324,12 @@ int del_item(struct ctree_root *root, struct ctree_path *path)
 				wret = del_ptr(root, path, 1, slot);
 				if (wret)
 					ret = wret;
-				tree_block_release(root, leaf_buf);
-				wret = free_extent(root, blocknr, 1);
+				btrfs_block_release(root, leaf_buf);
+				wret = btrfs_free_extent(root, blocknr, 1);
 				if (wret)
 					ret = wret;
 			} else {
-				tree_block_release(root, leaf_buf);
+				btrfs_block_release(root, leaf_buf);
 			}
 		}
 	}
@@ -1340,15 +1341,15 @@ int del_item(struct ctree_root *root, struct ctree_path *path)
  * returns 0 if it found something or 1 if there are no greater leaves.
  * returns < 0 on io errors.
  */
-int next_leaf(struct ctree_root *root, struct ctree_path *path)
+int btrfs_next_leaf(struct btrfs_root *root, struct btrfs_path *path)
 {
 	int slot;
 	int level = 1;
 	u64 blocknr;
-	struct tree_buffer *c;
-	struct tree_buffer *next = NULL;
+	struct btrfs_buffer *c;
+	struct btrfs_buffer *next = NULL;
 
-	while(level < MAX_LEVEL) {
+	while(level < BTRFS_MAX_LEVEL) {
 		if (!path->nodes[level])
 			return 1;
 		slot = path->slots[level] + 1;
@@ -1359,7 +1360,7 @@ int next_leaf(struct ctree_root *root, struct ctree_path *path)
 		}
 		blocknr = btrfs_node_blockptr(&c->node, slot);
 		if (next)
-			tree_block_release(root, next);
+			btrfs_block_release(root, next);
 		next = read_tree_block(root, blocknr);
 		break;
 	}
@@ -1367,7 +1368,7 @@ int next_leaf(struct ctree_root *root, struct ctree_path *path)
 	while(1) {
 		level--;
 		c = path->nodes[level];
-		tree_block_release(root, c);
+		btrfs_block_release(root, c);
 		path->nodes[level] = next;
 		path->slots[level] = 0;
 		if (!level)

fs/btrfs/ctree.h

@@ -1,10 +1,10 @@
-#ifndef __CTREE__
-#define __CTREE__
+#ifndef __BTRFS__
+#define __BTRFS__
 
 #include "list.h"
 #include "kerncompat.h"
 
-#define CTREE_BLOCKSIZE 1024
+#define BTRFS_BLOCKSIZE 1024
 
 /*
  * the key defines the order in the tree, and so it also defines (optimal)
@@ -46,21 +46,21 @@ struct btrfs_header {
 	/* generation flags to be added */
 } __attribute__ ((__packed__));
 
-#define MAX_LEVEL 8
-#define NODEPTRS_PER_BLOCK ((CTREE_BLOCKSIZE - sizeof(struct btrfs_header)) / \
+#define BTRFS_MAX_LEVEL 8
+#define NODEPTRS_PER_BLOCK ((BTRFS_BLOCKSIZE - sizeof(struct btrfs_header)) / \
 			    (sizeof(struct btrfs_disk_key) + sizeof(u64)))
 
-struct tree_buffer;
+struct btrfs_buffer;
 
 /*
  * in ram representation of the tree.  extent_root is used for all allocations
  * and for the extent tree extent_root root.  current_insert is used
  * only for the extent tree.
  */
-struct ctree_root {
-	struct tree_buffer *node;
-	struct tree_buffer *commit_root;
-	struct ctree_root *extent_root;
+struct btrfs_root {
+	struct btrfs_buffer *node;
+	struct btrfs_buffer *commit_root;
+	struct btrfs_root *extent_root;
 	struct btrfs_key current_insert;
 	struct btrfs_key last_insert;
 	int fp;
@@ -74,7 +74,7 @@ struct ctree_root {
 /*
  * describes a tree on disk
  */
-struct ctree_root_info {
+struct btrfs_root_info {
 	u64 fsid[2]; /* FS specific uuid */
 	u64 blocknr; /* blocknr of this block */
 	u64 objectid; /* inode number of this root */
@@ -88,9 +88,9 @@ struct ctree_root_info {
  * the super block basically lists the main trees of the FS
  * it currently lacks any block count etc etc
  */
-struct ctree_super_block {
-	struct ctree_root_info root_info;
-	struct ctree_root_info extent_info;
+struct btrfs_super_block {
+	struct btrfs_root_info root_info;
+	struct btrfs_root_info extent_info;
 } __attribute__ ((__packed__));
 
 /*
@@ -111,13 +111,13 @@ struct btrfs_item {
  * The data is separate from the items to get the keys closer together
  * during searches.
  */
-#define LEAF_DATA_SIZE (CTREE_BLOCKSIZE - sizeof(struct btrfs_header))
-struct leaf {
+#define LEAF_DATA_SIZE (BTRFS_BLOCKSIZE - sizeof(struct btrfs_header))
+struct btrfs_leaf {
 	struct btrfs_header header;
 	union {
 		struct btrfs_item items[LEAF_DATA_SIZE/
 				        sizeof(struct btrfs_item)];
-		u8 data[CTREE_BLOCKSIZE-sizeof(struct btrfs_header)];
+		u8 data[BTRFS_BLOCKSIZE - sizeof(struct btrfs_header)];
 	};
 } __attribute__ ((__packed__));
 
@@ -125,7 +125,7 @@ struct leaf {
  * all non-leaf blocks are nodes, they hold only keys and pointers to
  * other blocks
  */
-struct node {
+struct btrfs_node {
 	struct btrfs_header header;
 	struct btrfs_disk_key keys[NODEPTRS_PER_BLOCK];
 	__le64 blockptrs[NODEPTRS_PER_BLOCK];
@@ -135,50 +135,51 @@ struct node {
  * items in the extent btree are used to record the objectid of the
  * owner of the block and the number of references
  */
-struct extent_item {
+struct btrfs_extent_item {
 	__le32 refs;
 	__le64 owner;
 } __attribute__ ((__packed__));
 
 /*
- * ctree_paths remember the path taken from the root down to the leaf.
- * level 0 is always the leaf, and nodes[1...MAX_LEVEL] will point
+ * btrfs_paths remember the path taken from the root down to the leaf.
+ * level 0 is always the leaf, and nodes[1...BTRFS_MAX_LEVEL] will point
  * to any other levels that are present.
  *
  * The slots array records the index of the item or block pointer
  * used while walking the tree.
  */
-struct ctree_path {
-	struct tree_buffer *nodes[MAX_LEVEL];
-	int slots[MAX_LEVEL];
+struct btrfs_path {
+	struct btrfs_buffer *nodes[BTRFS_MAX_LEVEL];
+	int slots[BTRFS_MAX_LEVEL];
 };
 
-static inline u64 btrfs_extent_owner(struct extent_item *ei)
+static inline u64 btrfs_extent_owner(struct btrfs_extent_item *ei)
 {
 	return le64_to_cpu(ei->owner);
 }
 
-static inline void btrfs_set_extent_owner(struct extent_item *ei, u64 val)
+static inline void btrfs_set_extent_owner(struct btrfs_extent_item *ei, u64 val)
 {
 	ei->owner = cpu_to_le64(val);
 }
 
-static inline u32 btrfs_extent_refs(struct extent_item *ei)
+static inline u32 btrfs_extent_refs(struct btrfs_extent_item *ei)
 {
 	return le32_to_cpu(ei->refs);
 }
 
-static inline void btrfs_set_extent_refs(struct extent_item *ei, u32 val)
+static inline void btrfs_set_extent_refs(struct btrfs_extent_item *ei, u32 val)
 {
 	ei->refs = cpu_to_le32(val);
 }
 
-static inline u64 btrfs_node_blockptr(struct node *n, int nr)
+static inline u64 btrfs_node_blockptr(struct btrfs_node *n, int nr)
 {
 	return le64_to_cpu(n->blockptrs[nr]);
 }
 
-static inline void btrfs_set_node_blockptr(struct node *n, int nr, u64 val)
+static inline void btrfs_set_node_blockptr(struct btrfs_node *n, int nr,
+					   u64 val)
 {
 	n->blockptrs[nr] = cpu_to_le64(val);
 }
@@ -300,34 +301,34 @@ static inline void btrfs_set_header_flags(struct btrfs_header *h, u16 val)
 
 static inline int btrfs_header_level(struct btrfs_header *h)
 {
-	return btrfs_header_flags(h) & (MAX_LEVEL - 1);
+	return btrfs_header_flags(h) & (BTRFS_MAX_LEVEL - 1);
 }
 
 static inline void btrfs_set_header_level(struct btrfs_header *h, int level)
 {
 	u16 flags;
-	BUG_ON(level > MAX_LEVEL);
-	flags = btrfs_header_flags(h) & ~(MAX_LEVEL - 1);
+	BUG_ON(level > BTRFS_MAX_LEVEL);
+	flags = btrfs_header_flags(h) & ~(BTRFS_MAX_LEVEL - 1);
 	btrfs_set_header_flags(h, flags | level);
 }
 
-static inline int btrfs_is_leaf(struct node *n)
+static inline int btrfs_is_leaf(struct btrfs_node *n)
 {
 	return (btrfs_header_level(&n->header) == 0);
 }
 
-struct tree_buffer *alloc_free_block(struct ctree_root *root);
-int btrfs_inc_ref(struct ctree_root *root, struct tree_buffer *buf);
-int free_extent(struct ctree_root *root, u64 blocknr, u64 num_blocks);
-int search_slot(struct ctree_root *root, struct btrfs_key *key,
-		struct ctree_path *p, int ins_len, int cow);
-void release_path(struct ctree_root *root, struct ctree_path *p);
-void init_path(struct ctree_path *p);
-int del_item(struct ctree_root *root, struct ctree_path *path);
-int insert_item(struct ctree_root *root, struct btrfs_key *key,
+struct btrfs_buffer *btrfs_alloc_free_block(struct btrfs_root *root);
+int btrfs_inc_ref(struct btrfs_root *root, struct btrfs_buffer *buf);
+int btrfs_free_extent(struct btrfs_root *root, u64 blocknr, u64 num_blocks);
+int btrfs_search_slot(struct btrfs_root *root, struct btrfs_key *key,
+		struct btrfs_path *p, int ins_len, int cow);
+void btrfs_release_path(struct btrfs_root *root, struct btrfs_path *p);
+void btrfs_init_path(struct btrfs_path *p);
+int btrfs_del_item(struct btrfs_root *root, struct btrfs_path *path);
+int btrfs_insert_item(struct btrfs_root *root, struct btrfs_key *key,
 		void *data, int data_size);
-int next_leaf(struct ctree_root *root, struct ctree_path *path);
-int leaf_free_space(struct leaf *leaf);
-int btrfs_drop_snapshot(struct ctree_root *root, struct tree_buffer *snap);
-int btrfs_finish_extent_commit(struct ctree_root *root);
+int btrfs_next_leaf(struct btrfs_root *root, struct btrfs_path *path);
+int btrfs_leaf_free_space(struct btrfs_leaf *leaf);
+int btrfs_drop_snapshot(struct btrfs_root *root, struct btrfs_buffer *snap);
+int btrfs_finish_extent_commit(struct btrfs_root *root);
 #endif

fs/btrfs/debug-tree.c

@@ -7,13 +7,13 @@
 #include "print-tree.h"
 
 int main(int ac, char **av) {
-	struct ctree_super_block super;
-	struct ctree_root *root;
+	struct btrfs_super_block super;
+	struct btrfs_root *root;
 	radix_tree_init();
 	root = open_ctree("dbfile", &super);
 	printf("root tree\n");
-	print_tree(root, root->node);
+	btrfs_print_tree(root, root->node);
 	printf("map tree\n");
-	print_tree(root->extent_root, root->extent_root->node);
+	btrfs_print_tree(root->extent_root, root->extent_root->node);
 	return 0;
 }

fs/btrfs/disk-io.c

@@ -13,7 +13,7 @@
 static int allocated_blocks = 0;
 int cache_max = 10000;
 
-static int check_tree_block(struct ctree_root *root, struct tree_buffer *buf)
+static int check_tree_block(struct btrfs_root *root, struct btrfs_buffer *buf)
 {
 	if (buf->blocknr != btrfs_header_blocknr(&buf->node.header))
 		BUG();
@@ -23,18 +23,18 @@ static int check_tree_block(struct ctree_root *root, struct tree_buffer *buf)
 	return 0;
 }
 
-static int free_some_buffers(struct ctree_root *root)
+static int free_some_buffers(struct btrfs_root *root)
 {
 	struct list_head *node, *next;
-	struct tree_buffer *b;
+	struct btrfs_buffer *b;
 	if (root->cache_size < cache_max)
 		return 0;
 	list_for_each_safe(node, next, &root->cache) {
-		b = list_entry(node, struct tree_buffer, cache);
+		b = list_entry(node, struct btrfs_buffer, cache);
 		if (b->count == 1) {
 			BUG_ON(!list_empty(&b->dirty));
 			list_del_init(&b->cache);
-			tree_block_release(root, b);
+			btrfs_block_release(root, b);
 			if (root->cache_size < cache_max)
 				break;
 		}
@@ -42,11 +42,11 @@ static int free_some_buffers(struct ctree_root *root)
 	return 0;
 }
 
-struct tree_buffer *alloc_tree_block(struct ctree_root *root, u64 blocknr)
+struct btrfs_buffer *alloc_tree_block(struct btrfs_root *root, u64 blocknr)
 {
-	struct tree_buffer *buf;
+	struct btrfs_buffer *buf;
 	int ret;
-	buf = malloc(sizeof(struct tree_buffer));
+	buf = malloc(sizeof(struct btrfs_buffer));
 	if (!buf)
 		return buf;
 	allocated_blocks++;
@@ -66,9 +66,9 @@ struct tree_buffer *alloc_tree_block(struct ctree_root *root, u64 blocknr)
 	return buf;
 }
 
-struct tree_buffer *find_tree_block(struct ctree_root *root, u64 blocknr)
+struct btrfs_buffer *find_tree_block(struct btrfs_root *root, u64 blocknr)
 {
-	struct tree_buffer *buf;
+	struct btrfs_buffer *buf;
 	buf = radix_tree_lookup(&root->cache_radix, blocknr);
 	if (buf) {
 		buf->count++;
@@ -82,10 +82,10 @@ struct tree_buffer *find_tree_block(struct ctree_root *root, u64 blocknr)
 	return buf;
 }
 
-struct tree_buffer *read_tree_block(struct ctree_root *root, u64 blocknr)
+struct btrfs_buffer *read_tree_block(struct btrfs_root *root, u64 blocknr)
 {
-	loff_t offset = blocknr * CTREE_BLOCKSIZE;
-	struct tree_buffer *buf;
+	loff_t offset = blocknr * BTRFS_BLOCKSIZE;
+	struct btrfs_buffer *buf;
 	int ret;
 
 	buf = radix_tree_lookup(&root->cache_radix, blocknr);
@@ -95,8 +95,8 @@ struct tree_buffer *read_tree_block(struct ctree_root *root, u64 blocknr)
 		buf = alloc_tree_block(root, blocknr);
 		if (!buf)
 			return NULL;
-		ret = pread(root->fp, &buf->node, CTREE_BLOCKSIZE, offset);
-		if (ret != CTREE_BLOCKSIZE) {
+		ret = pread(root->fp, &buf->node, BTRFS_BLOCKSIZE, offset);
+		if (ret != BTRFS_BLOCKSIZE) {
 			free(buf);
 			return NULL;
 		}
@@ -106,7 +106,7 @@ struct tree_buffer *read_tree_block(struct ctree_root *root, u64 blocknr)
 	return buf;
 }
 
-int dirty_tree_block(struct ctree_root *root, struct tree_buffer *buf)
+int dirty_tree_block(struct btrfs_root *root, struct btrfs_buffer *buf)
 {
 	if (!list_empty(&buf->dirty))
 		return 0;
@@ -115,46 +115,47 @@ int dirty_tree_block(struct ctree_root *root, struct tree_buffer *buf)
 	return 0;
 }
 
-int clean_tree_block(struct ctree_root *root, struct tree_buffer *buf)
+int clean_tree_block(struct btrfs_root *root, struct btrfs_buffer *buf)
 {
 	if (!list_empty(&buf->dirty)) {
 		list_del_init(&buf->dirty);
-		tree_block_release(root, buf);
+		btrfs_block_release(root, buf);
 	}
 	return 0;
 }
 
-int write_tree_block(struct ctree_root *root, struct tree_buffer *buf)
+int write_tree_block(struct btrfs_root *root, struct btrfs_buffer *buf)
 {
 	u64 blocknr = buf->blocknr;
-	loff_t offset = blocknr * CTREE_BLOCKSIZE;
+	loff_t offset = blocknr * BTRFS_BLOCKSIZE;
 	int ret;
 
 	if (buf->blocknr != btrfs_header_blocknr(&buf->node.header))
 		BUG();
-	ret = pwrite(root->fp, &buf->node, CTREE_BLOCKSIZE, offset);
-	if (ret != CTREE_BLOCKSIZE)
+	ret = pwrite(root->fp, &buf->node, BTRFS_BLOCKSIZE, offset);
+	if (ret != BTRFS_BLOCKSIZE)
 		return ret;
 	return 0;
 }
 
-static int __commit_transaction(struct ctree_root *root)
+static int __commit_transaction(struct btrfs_root *root)
 {
-	struct tree_buffer *b;
+	struct btrfs_buffer *b;
 	int ret = 0;
 	int wret;
 	while(!list_empty(&root->trans)) {
-		b = list_entry(root->trans.next, struct tree_buffer, dirty);
+		b = list_entry(root->trans.next, struct btrfs_buffer, dirty);
 		list_del_init(&b->dirty);
 		wret = write_tree_block(root, b);
 		if (wret)
 			ret = wret;
-		tree_block_release(root, b);
+		btrfs_block_release(root, b);
 	}
 	return ret;
 }
 
-int commit_transaction(struct ctree_root *root, struct ctree_super_block *s)
+int btrfs_commit_transaction(struct btrfs_root *root,
+			     struct btrfs_super_block *s)
 {
 	int ret = 0;
 
@@ -163,20 +164,20 @@ int commit_transaction(struct ctree_root *root, struct ctree_super_block *s)
 		ret = __commit_transaction(root->extent_root);
 	BUG_ON(ret);
 	if (root->commit_root != root->node) {
-		struct tree_buffer *snap = root->commit_root;
+		struct btrfs_buffer *snap = root->commit_root;
 		root->commit_root = root->node;
 		root->node->count++;
 		ret = btrfs_drop_snapshot(root, snap);
 		BUG_ON(ret);
-		// tree_block_release(root, snap);
+		// btrfs_block_release(root, snap);
 	}
         write_ctree_super(root, s);
 	btrfs_finish_extent_commit(root);
 	return ret;
 }
 
-static int __setup_root(struct ctree_root *root, struct ctree_root *extent_root,
-			struct ctree_root_info *info, int fp)
+static int __setup_root(struct btrfs_root *root, struct btrfs_root *extent_root,
+			struct btrfs_root_info *info, int fp)
 {
 	INIT_LIST_HEAD(&root->trans);
 	INIT_LIST_HEAD(&root->cache);
@@ -191,10 +192,10 @@ static int __setup_root(struct ctree_root *root, struct ctree_root *extent_root,
 	return 0;
 }
 
-struct ctree_root *open_ctree(char *filename, struct ctree_super_block *super)
+struct btrfs_root *open_ctree(char *filename, struct btrfs_super_block *super)
 {
-	struct ctree_root *root = malloc(sizeof(struct ctree_root));
-	struct ctree_root *extent_root = malloc(sizeof(struct ctree_root));
+	struct btrfs_root *root = malloc(sizeof(struct btrfs_root));
+	struct btrfs_root *extent_root = malloc(sizeof(struct btrfs_root));
 	int fp;
 	int ret;
 
@@ -207,16 +208,16 @@ struct ctree_root *open_ctree(char *filename, struct ctree_super_block *super)
 	INIT_RADIX_TREE(&root->pinned_radix, GFP_KERNEL);
 	INIT_RADIX_TREE(&extent_root->pinned_radix, GFP_KERNEL);
 	INIT_RADIX_TREE(&extent_root->cache_radix, GFP_KERNEL);
-	ret = pread(fp, super, sizeof(struct ctree_super_block),
-		     CTREE_SUPER_INFO_OFFSET(CTREE_BLOCKSIZE));
+	ret = pread(fp, super, sizeof(struct btrfs_super_block),
+		     BTRFS_SUPER_INFO_OFFSET(BTRFS_BLOCKSIZE));
 	if (ret == 0 || super->root_info.tree_root == 0) {
 		printf("making new FS!\n");
 		ret = mkfs(fp);
 		if (ret)
 			return NULL;
-		ret = pread(fp, super, sizeof(struct ctree_super_block),
-			     CTREE_SUPER_INFO_OFFSET(CTREE_BLOCKSIZE));
-		if (ret != sizeof(struct ctree_super_block))
+		ret = pread(fp, super, sizeof(struct btrfs_super_block),
+			     BTRFS_SUPER_INFO_OFFSET(BTRFS_BLOCKSIZE));
+		if (ret != sizeof(struct btrfs_super_block))
 			return NULL;
 	}
 	BUG_ON(ret < 0);
@@ -227,18 +228,19 @@ struct ctree_root *open_ctree(char *filename, struct ctree_super_block *super)
 	return root;
 }
 
-static int __update_root(struct ctree_root *root, struct ctree_root_info *info)
+static int __update_root(struct btrfs_root *root, struct btrfs_root_info *info)
 {
 	info->tree_root = root->node->blocknr;
 	return 0;
 }
 
-int write_ctree_super(struct ctree_root *root, struct ctree_super_block *s)
+int write_ctree_super(struct btrfs_root *root, struct btrfs_super_block *s)
 {
 	int ret;
 	__update_root(root, &s->root_info);
 	__update_root(root->extent_root, &s->extent_info);
-	ret = pwrite(root->fp, s, sizeof(*s), CTREE_SUPER_INFO_OFFSET(CTREE_BLOCKSIZE));
+	ret = pwrite(root->fp, s, sizeof(*s),
+		     BTRFS_SUPER_INFO_OFFSET(BTRFS_BLOCKSIZE));
 	if (ret != sizeof(*s)) {
 		fprintf(stderr, "failed to write new super block err %d\n", ret);
 		return ret;
@@ -246,19 +248,19 @@ int write_ctree_super(struct ctree_root *root, struct ctree_super_block *s)
 	return 0;
 }
 
-static int drop_cache(struct ctree_root *root)
+static int drop_cache(struct btrfs_root *root)
 {
 	while(!list_empty(&root->cache)) {
-		struct tree_buffer *b = list_entry(root->cache.next,
-						   struct tree_buffer, cache);
+		struct btrfs_buffer *b = list_entry(root->cache.next,
+						   struct btrfs_buffer, cache);
 		list_del_init(&b->cache);
-		tree_block_release(root, b);
+		btrfs_block_release(root, b);
 	}
 	return 0;
 }
-int close_ctree(struct ctree_root *root, struct ctree_super_block *s)
+int close_ctree(struct btrfs_root *root, struct btrfs_super_block *s)
 {
-	commit_transaction(root, s);
+	btrfs_commit_transaction(root, s);
 	__commit_transaction(root->extent_root);
 	write_ctree_super(root, s);
 	drop_cache(root->extent_root);
@@ -268,16 +270,16 @@ int close_ctree(struct ctree_root *root, struct ctree_super_block *s)
 
 	close(root->fp);
 	if (root->node)
-		tree_block_release(root, root->node);
+		btrfs_block_release(root, root->node);
 	if (root->extent_root->node)
-		tree_block_release(root->extent_root, root->extent_root->node);
-	tree_block_release(root, root->commit_root);
+		btrfs_block_release(root->extent_root, root->extent_root->node);
+	btrfs_block_release(root, root->commit_root);
 	free(root);
 	printf("on close %d blocks are allocated\n", allocated_blocks);
 	return 0;
 }
 
-void tree_block_release(struct ctree_root *root, struct tree_buffer *buf)
+void btrfs_block_release(struct btrfs_root *root, struct btrfs_buffer *buf)
 {
 	buf->count--;
 	if (buf->count < 0)

fs/btrfs/disk-io.h

@@ -2,29 +2,30 @@
 #define __DISKIO__
 #include "list.h"
 
-struct tree_buffer {
+struct btrfs_buffer {
 	u64 blocknr;
 	int count;
 	union {
-		struct node node;
-		struct leaf leaf;
+		struct btrfs_node node;
+		struct btrfs_leaf leaf;
 	};
 	struct list_head dirty;
 	struct list_head cache;
 };
 
-struct tree_buffer *read_tree_block(struct ctree_root *root, u64 blocknr);
-struct tree_buffer *find_tree_block(struct ctree_root *root, u64 blocknr);
-int write_tree_block(struct ctree_root *root, struct tree_buffer *buf);
-int dirty_tree_block(struct ctree_root *root, struct tree_buffer *buf);
-int clean_tree_block(struct ctree_root *root, struct tree_buffer *buf);
-int commit_transaction(struct ctree_root *root, struct ctree_super_block *s);
-struct ctree_root *open_ctree(char *filename, struct ctree_super_block *s);
-int close_ctree(struct ctree_root *root, struct ctree_super_block *s);
-void tree_block_release(struct ctree_root *root, struct tree_buffer *buf);
-int write_ctree_super(struct ctree_root *root, struct ctree_super_block *s);
+struct btrfs_buffer *read_tree_block(struct btrfs_root *root, u64 blocknr);
+struct btrfs_buffer *find_tree_block(struct btrfs_root *root, u64 blocknr);
+int write_tree_block(struct btrfs_root *root, struct btrfs_buffer *buf);
+int dirty_tree_block(struct btrfs_root *root, struct btrfs_buffer *buf);
+int clean_tree_block(struct btrfs_root *root, struct btrfs_buffer *buf);
+int btrfs_commit_transaction(struct btrfs_root *root,
+			     struct btrfs_super_block *s);
+struct btrfs_root *open_ctree(char *filename, struct btrfs_super_block *s);
+int close_ctree(struct btrfs_root *root, struct btrfs_super_block *s);
+void btrfs_block_release(struct btrfs_root *root, struct btrfs_buffer *buf);
+int write_ctree_super(struct btrfs_root *root, struct btrfs_super_block *s);
 int mkfs(int fd);
 
-#define CTREE_SUPER_INFO_OFFSET(bs) (16 * (bs))
+#define BTRFS_SUPER_INFO_OFFSET(bs) (16 * (bs))
 
 #endif

fs/btrfs/extent-tree.c

@@ -6,11 +6,11 @@
 #include "disk-io.h"
 #include "print-tree.h"
 
-static int find_free_extent(struct ctree_root *orig_root, u64 num_blocks,
+static int find_free_extent(struct btrfs_root *orig_root, u64 num_blocks,
 			    u64 search_start, u64 search_end,
 			    struct btrfs_key *ins);
-static int finish_current_insert(struct ctree_root *extent_root);
-static int run_pending(struct ctree_root *extent_root);
+static int finish_current_insert(struct btrfs_root *extent_root);
+static int run_pending(struct btrfs_root *extent_root);
 
 /*
  * pending extents are blocks that we're trying to allocate in the extent
@@ -21,62 +21,63 @@ static int run_pending(struct ctree_root *extent_root);
  */
 #define CTREE_EXTENT_PENDING_DEL 0
 
-static int inc_block_ref(struct ctree_root *root, u64 blocknr)
+static int inc_block_ref(struct btrfs_root *root, u64 blocknr)
 {
-	struct ctree_path path;
+	struct btrfs_path path;
 	int ret;
 	struct btrfs_key key;
-	struct leaf *l;
-	struct extent_item *item;
+	struct btrfs_leaf *l;
+	struct btrfs_extent_item *item;
 	struct btrfs_key ins;
 	u32 refs;
 
 	find_free_extent(root->extent_root, 0, 0, (u64)-1, &ins);
-	init_path(&path);
+	btrfs_init_path(&path);
 	key.objectid = blocknr;
 	key.flags = 0;
 	key.offset = 1;
-	ret = search_slot(root->extent_root, &key, &path, 0, 1);
+	ret = btrfs_search_slot(root->extent_root, &key, &path, 0, 1);
 	if (ret != 0)
 		BUG();
 	BUG_ON(ret != 0);
 	l = &path.nodes[0]->leaf;
-	item = (struct extent_item *)(l->data + btrfs_item_offset(l->items +
-								path.slots[0]));
+	item = (struct btrfs_extent_item *)(l->data +
+					    btrfs_item_offset(l->items +
+							      path.slots[0]));
 	refs = btrfs_extent_refs(item);
 	btrfs_set_extent_refs(item, refs + 1);
 
 	BUG_ON(list_empty(&path.nodes[0]->dirty));
-	release_path(root->extent_root, &path);
+	btrfs_release_path(root->extent_root, &path);
 	finish_current_insert(root->extent_root);
 	run_pending(root->extent_root);
 	return 0;
 }
 
-static int lookup_block_ref(struct ctree_root *root, u64 blocknr, u32 *refs)
+static int lookup_block_ref(struct btrfs_root *root, u64 blocknr, u32 *refs)
 {
-	struct ctree_path path;
+	struct btrfs_path path;
 	int ret;
 	struct btrfs_key key;
-	struct leaf *l;
-	struct extent_item *item;
-	init_path(&path);
+	struct btrfs_leaf *l;
+	struct btrfs_extent_item *item;
+	btrfs_init_path(&path);
 	key.objectid = blocknr;
 	key.flags = 0;
 	key.offset = 1;
-	ret = search_slot(root->extent_root, &key, &path, 0, 0);
+	ret = btrfs_search_slot(root->extent_root, &key, &path, 0, 0);
 	if (ret != 0)
 		BUG();
 	l = &path.nodes[0]->leaf;
-	item = (struct extent_item *)(l->data +
+	item = (struct btrfs_extent_item *)(l->data +
 				      btrfs_item_offset(l->items +
 							path.slots[0]));
 	*refs = btrfs_extent_refs(item);
-	release_path(root->extent_root, &path);
+	btrfs_release_path(root->extent_root, &path);
 	return 0;
 }
 
-int btrfs_inc_ref(struct ctree_root *root, struct tree_buffer *buf)
+int btrfs_inc_ref(struct btrfs_root *root, struct btrfs_buffer *buf)
 {
 	u64 blocknr;
 	int i;
@@ -93,9 +94,9 @@ int btrfs_inc_ref(struct ctree_root *root, struct tree_buffer *buf)
 	return 0;
 }
 
-int btrfs_finish_extent_commit(struct ctree_root *root)
+int btrfs_finish_extent_commit(struct btrfs_root *root)
 {
-	struct ctree_root *extent_root = root->extent_root;
+	struct btrfs_root *extent_root = root->extent_root;
 	unsigned long gang[8];
 	int ret;
 	int i;
@@ -115,10 +116,10 @@ int btrfs_finish_extent_commit(struct ctree_root *root)
 	return 0;
 }
 
-static int finish_current_insert(struct ctree_root *extent_root)
+static int finish_current_insert(struct btrfs_root *extent_root)
 {
 	struct btrfs_key ins;
-	struct extent_item extent_item;
+	struct btrfs_extent_item extent_item;
 	int i;
 	int ret;
 
@@ -130,7 +131,7 @@ static int finish_current_insert(struct ctree_root *extent_root)
 
 	for (i = 0; i < extent_root->current_insert.flags; i++) {
 		ins.objectid = extent_root->current_insert.objectid + i;
-		ret = insert_item(extent_root, &ins, &extent_item,
+		ret = btrfs_insert_item(extent_root, &ins, &extent_item,
 				  sizeof(extent_item));
 		BUG_ON(ret);
 	}
@@ -141,14 +142,14 @@ static int finish_current_insert(struct ctree_root *extent_root)
 /*
  * remove an extent from the root, returns 0 on success
  */
-int __free_extent(struct ctree_root *root, u64 blocknr, u64 num_blocks)
+static int __free_extent(struct btrfs_root *root, u64 blocknr, u64 num_blocks)
 {
-	struct ctree_path path;
+	struct btrfs_path path;
 	struct btrfs_key key;
-	struct ctree_root *extent_root = root->extent_root;
+	struct btrfs_root *extent_root = root->extent_root;
 	int ret;
 	struct btrfs_item *item;
-	struct extent_item *ei;
+	struct btrfs_extent_item *ei;
 	struct btrfs_key ins;
 	u32 refs;
 
@@ -157,16 +158,16 @@ int __free_extent(struct ctree_root *root, u64 blocknr, u64 num_blocks)
 	key.offset = num_blocks;
 
 	find_free_extent(root, 0, 0, (u64)-1, &ins);
-	init_path(&path);
-	ret = search_slot(extent_root, &key, &path, -1, 1);
+	btrfs_init_path(&path);
+	ret = btrfs_search_slot(extent_root, &key, &path, -1, 1);
 	if (ret) {
 		printf("failed to find %Lu\n", key.objectid);
-		print_tree(extent_root, extent_root->node);
+		btrfs_print_tree(extent_root, extent_root->node);
 		printf("failed to find %Lu\n", key.objectid);
 		BUG();
 	}
 	item = path.nodes[0]->leaf.items + path.slots[0];
-	ei = (struct extent_item *)(path.nodes[0]->leaf.data +
+	ei = (struct btrfs_extent_item *)(path.nodes[0]->leaf.data +
 				    btrfs_item_offset(item));
 	BUG_ON(ei->refs == 0);
 	refs = btrfs_extent_refs(ei) - 1;
@@ -180,14 +181,14 @@ int __free_extent(struct ctree_root *root, u64 blocknr, u64 num_blocks)
 			BUG_ON(err);
 			radix_tree_preload_end();
 		}
-		ret = del_item(extent_root, &path);
+		ret = btrfs_del_item(extent_root, &path);
 		if (root != extent_root &&
 		    extent_root->last_insert.objectid < blocknr)
 			extent_root->last_insert.objectid = blocknr;
 		if (ret)
 			BUG();
 	}
-	release_path(extent_root, &path);
+	btrfs_release_path(extent_root, &path);
 	finish_current_insert(extent_root);
 	return ret;
 }
@@ -196,10 +197,10 @@ int __free_extent(struct ctree_root *root, u64 blocknr, u64 num_blocks)
  * find all the blocks marked as pending in the radix tree and remove
  * them from the extent map
  */
-static int del_pending_extents(struct ctree_root *extent_root)
+static int del_pending_extents(struct btrfs_root *extent_root)
 {
 	int ret;
-	struct tree_buffer *gang[4];
+	struct btrfs_buffer *gang[4];
 	int i;
 
 	while(1) {
@@ -214,13 +215,13 @@ static int del_pending_extents(struct ctree_root *extent_root)
 			radix_tree_tag_clear(&extent_root->cache_radix,
 						gang[i]->blocknr,
 						CTREE_EXTENT_PENDING_DEL);
-			tree_block_release(extent_root, gang[i]);
+			btrfs_block_release(extent_root, gang[i]);
 		}
 	}
 	return 0;
 }
 
-static int run_pending(struct ctree_root *extent_root)
+static int run_pending(struct btrfs_root *extent_root)
 {
 	while(radix_tree_tagged(&extent_root->cache_radix,
 			        CTREE_EXTENT_PENDING_DEL))
@@ -232,11 +233,11 @@ static int run_pending(struct ctree_root *extent_root)
 /*
  * remove an extent from the root, returns 0 on success
  */
-int free_extent(struct ctree_root *root, u64 blocknr, u64 num_blocks)
+int btrfs_free_extent(struct btrfs_root *root, u64 blocknr, u64 num_blocks)
 {
 	struct btrfs_key key;
-	struct ctree_root *extent_root = root->extent_root;
-	struct tree_buffer *t;
+	struct btrfs_root *extent_root = root->extent_root;
+	struct btrfs_buffer *t;
 	int pending_ret;
 	int ret;
 
@@ -262,11 +263,11 @@ int free_extent(struct ctree_root *root, u64 blocknr, u64 num_blocks)
  * ins->offset == number of blocks
  * Any available blocks before search_start are skipped.
  */
-static int find_free_extent(struct ctree_root *orig_root, u64 num_blocks,
+static int find_free_extent(struct btrfs_root *orig_root, u64 num_blocks,
 			    u64 search_start, u64 search_end,
 			    struct btrfs_key *ins)
 {
-	struct ctree_path path;
+	struct btrfs_path path;
 	struct btrfs_key key;
 	int ret;
 	u64 hole_size = 0;
@@ -274,20 +275,20 @@ static int find_free_extent(struct ctree_root *orig_root, u64 num_blocks,
 	u64 last_block;
 	u64 test_block;
 	int start_found;
-	struct leaf *l;
-	struct ctree_root * root = orig_root->extent_root;
+	struct btrfs_leaf *l;
+	struct btrfs_root * root = orig_root->extent_root;
 	int total_needed = num_blocks;
 
 	total_needed += (btrfs_header_level(&root->node->node.header) + 1) * 3;
 	if (root->last_insert.objectid > search_start)
 		search_start = root->last_insert.objectid;
 check_failed:
-	init_path(&path);
+	btrfs_init_path(&path);
 	ins->objectid = search_start;
 	ins->offset = 0;
 	ins->flags = 0;
 	start_found = 0;
-	ret = search_slot(root, ins, &path, 0, 0);
+	ret = btrfs_search_slot(root, ins, &path, 0, 0);
 	if (ret < 0)
 		goto error;
 
@@ -298,7 +299,7 @@ check_failed:
 		l = &path.nodes[0]->leaf;
 		slot = path.slots[0];
 		if (slot >= btrfs_header_nritems(&l->header)) {
-			ret = next_leaf(root, &path);
+			ret = btrfs_next_leaf(root, &path);
 			if (ret == 0)
 				continue;
 			if (ret < 0)
@@ -336,7 +337,7 @@ check_pending:
 	/* we have to make sure we didn't find an extent that has already
 	 * been allocated by the map tree or the original allocation
 	 */
-	release_path(root, &path);
+	btrfs_release_path(root, &path);
 	BUG_ON(ins->objectid < search_start);
 	for (test_block = ins->objectid;
 	     test_block < ins->objectid + total_needed; test_block++) {
@@ -353,7 +354,7 @@ check_pending:
 	ins->offset = num_blocks;
 	return 0;
 error:
-	release_path(root, &path);
+	btrfs_release_path(root, &path);
 	return ret;
 }
 
@@ -364,13 +365,13 @@ error:
  *
  * returns 0 if everything worked, non-zero otherwise.
  */
-int alloc_extent(struct ctree_root *root, u64 num_blocks, u64 search_start,
+int alloc_extent(struct btrfs_root *root, u64 num_blocks, u64 search_start,
 			 u64 search_end, u64 owner, struct btrfs_key *ins)
 {
 	int ret;
 	int pending_ret;
-	struct ctree_root *extent_root = root->extent_root;
-	struct extent_item extent_item;
+	struct btrfs_root *extent_root = root->extent_root;
+	struct btrfs_extent_item extent_item;
 
 	btrfs_set_extent_refs(&extent_item, 1);
 	btrfs_set_extent_owner(&extent_item, owner);
@@ -390,7 +391,7 @@ int alloc_extent(struct ctree_root *root, u64 num_blocks, u64 search_start,
 	if (ret)
 		return ret;
 
-	ret = insert_item(extent_root, ins, &extent_item,
+	ret = btrfs_insert_item(extent_root, ins, &extent_item,
 			  sizeof(extent_item));
 
 	finish_current_insert(extent_root);
@@ -406,11 +407,11 @@ int alloc_extent(struct ctree_root *root, u64 num_blocks, u64 search_start,
  * helper function to allocate a block for a given tree
  * returns the tree buffer or NULL.
  */
-struct tree_buffer *alloc_free_block(struct ctree_root *root)
+struct btrfs_buffer *btrfs_alloc_free_block(struct btrfs_root *root)
 {
 	struct btrfs_key ins;
 	int ret;
-	struct tree_buffer *buf;
+	struct btrfs_buffer *buf;
 
 	ret = alloc_extent(root, 1, 0, (unsigned long)-1,
 			   btrfs_header_parentid(&root->node->node.header),
@@ -424,10 +425,10 @@ struct tree_buffer *alloc_free_block(struct ctree_root *root)
 	return buf;
 }
 
-int walk_down_tree(struct ctree_root *root, struct ctree_path *path, int *level)
+int walk_down_tree(struct btrfs_root *root, struct btrfs_path *path, int *level)
 {
-	struct tree_buffer *next;
-	struct tree_buffer *cur;
+	struct btrfs_buffer *next;
+	struct btrfs_buffer *cur;
 	u64 blocknr;
 	int ret;
 	u32 refs;
@@ -445,33 +446,33 @@ int walk_down_tree(struct ctree_root *root, struct ctree_path *path, int *level)
 		ret = lookup_block_ref(root, blocknr, &refs);
 		if (refs != 1 || *level == 1) {
 			path->slots[*level]++;
-			ret = free_extent(root, blocknr, 1);
+			ret = btrfs_free_extent(root, blocknr, 1);
 			BUG_ON(ret);
 			continue;
 		}
 		BUG_ON(ret);
 		next = read_tree_block(root, blocknr);
 		if (path->nodes[*level-1])
-			tree_block_release(root, path->nodes[*level-1]);
+			btrfs_block_release(root, path->nodes[*level-1]);
 		path->nodes[*level-1] = next;
 		*level = btrfs_header_level(&next->node.header);
 		path->slots[*level] = 0;
 	}
 out:
-	ret = free_extent(root, path->nodes[*level]->blocknr, 1);
-	tree_block_release(root, path->nodes[*level]);
+	ret = btrfs_free_extent(root, path->nodes[*level]->blocknr, 1);
+	btrfs_block_release(root, path->nodes[*level]);
 	path->nodes[*level] = NULL;
 	*level += 1;
 	BUG_ON(ret);
 	return 0;
 }
 
-int walk_up_tree(struct ctree_root *root, struct ctree_path *path, int *level)
+int walk_up_tree(struct btrfs_root *root, struct btrfs_path *path, int *level)
 {
 	int i;
 	int slot;
 	int ret;
-	for(i = *level; i < MAX_LEVEL - 1 && path->nodes[i]; i++) {
+	for(i = *level; i < BTRFS_MAX_LEVEL - 1 && path->nodes[i]; i++) {
 		slot = path->slots[i];
 		if (slot <
 		    btrfs_header_nritems(&path->nodes[i]->node.header)- 1) {
@@ -479,9 +480,9 @@ int walk_up_tree(struct ctree_root *root, struct ctree_path *path, int *level)
 			*level = i;
 			return 0;
 		} else {
-			ret = free_extent(root,
+			ret = btrfs_free_extent(root,
 					  path->nodes[*level]->blocknr, 1);
-			tree_block_release(root, path->nodes[*level]);
+			btrfs_block_release(root, path->nodes[*level]);
 			path->nodes[*level] = NULL;
 			*level = i + 1;
 			BUG_ON(ret);
@@ -490,15 +491,15 @@ int walk_up_tree(struct ctree_root *root, struct ctree_path *path, int *level)
 	return 1;
 }
 
-int btrfs_drop_snapshot(struct ctree_root *root, struct tree_buffer *snap)
+int btrfs_drop_snapshot(struct btrfs_root *root, struct btrfs_buffer *snap)
 {
 	int ret;
 	int level;
-	struct ctree_path path;
+	struct btrfs_path path;
 	int i;
 	int orig_level;
 
-	init_path(&path);
+	btrfs_init_path(&path);
 
 	level = btrfs_header_level(&snap->node.header);
 	orig_level = level;
@@ -514,7 +515,7 @@ int btrfs_drop_snapshot(struct ctree_root *root, struct tree_buffer *snap)
 	}
 	for (i = 0; i <= orig_level; i++) {
 		if (path.nodes[i]) {
-			tree_block_release(root, path.nodes[i]);
+			btrfs_block_release(root, path.nodes[i]);
 		}
 	}
 

fs/btrfs/mkfs.c

@@ -12,10 +12,10 @@
 
 int mkfs(int fd)
 {
-	struct ctree_root_info info[2];
-	struct leaf empty_leaf;
+	struct btrfs_root_info info[2];
+	struct btrfs_leaf empty_leaf;
 	struct btrfs_item item;
-	struct extent_item extent_item;
+	struct btrfs_extent_item extent_item;
 	int ret;
 
 	/* setup the super block area */
@@ -28,7 +28,7 @@ int mkfs(int fd)
 	info[1].objectid = 2;
 	info[1].tree_root = 18;
 	ret = pwrite(fd, info, sizeof(info),
-		     CTREE_SUPER_INFO_OFFSET(CTREE_BLOCKSIZE));
+		     BTRFS_SUPER_INFO_OFFSET(BTRFS_BLOCKSIZE));
 	if (ret != sizeof(info))
 		return -1;
 
@@ -36,7 +36,7 @@ int mkfs(int fd)
 	memset(&empty_leaf, 0, sizeof(empty_leaf));
 	btrfs_set_header_parentid(&empty_leaf.header, 1);
 	btrfs_set_header_blocknr(&empty_leaf.header, 17);
-	ret = pwrite(fd, &empty_leaf, sizeof(empty_leaf), 17 * CTREE_BLOCKSIZE);
+	ret = pwrite(fd, &empty_leaf, sizeof(empty_leaf), 17 * BTRFS_BLOCKSIZE);
 	if (ret != sizeof(empty_leaf))
 		return -1;
 
@@ -48,9 +48,9 @@ int mkfs(int fd)
 	btrfs_set_key_objectid(&item.key, 0);
 	btrfs_set_key_offset(&item.key, 17);
 	btrfs_set_key_flags(&item.key, 0);
-	btrfs_set_item_offset(&item,
-			      LEAF_DATA_SIZE - sizeof(struct extent_item));
-	btrfs_set_item_size(&item, sizeof(struct extent_item));
+	btrfs_set_item_offset(&item, LEAF_DATA_SIZE -
+			      sizeof(struct btrfs_extent_item));
+	btrfs_set_item_size(&item, sizeof(struct btrfs_extent_item));
 	btrfs_set_extent_refs(&extent_item, 1);
 	btrfs_set_extent_owner(&extent_item, 0);
 	memcpy(empty_leaf.items, &item, sizeof(item));
@@ -60,8 +60,8 @@ int mkfs(int fd)
 	/* item2, give block 17 to the root */
 	btrfs_set_key_objectid(&item.key, 17);
 	btrfs_set_key_offset(&item.key, 1);
-	btrfs_set_item_offset(&item,
-			      LEAF_DATA_SIZE - sizeof(struct extent_item) * 2);
+	btrfs_set_item_offset(&item, LEAF_DATA_SIZE -
+			      sizeof(struct btrfs_extent_item) * 2);
 	btrfs_set_extent_owner(&extent_item, 1);
 	memcpy(empty_leaf.items + 1, &item, sizeof(item));
 	memcpy(empty_leaf.data + btrfs_item_offset(&item), &extent_item,
@@ -70,13 +70,13 @@ int mkfs(int fd)
 	/* item3, give block 18 for the extent root */
 	btrfs_set_key_objectid(&item.key, 18);
 	btrfs_set_key_offset(&item.key, 1);
-	btrfs_set_item_offset(&item,
-			      LEAF_DATA_SIZE - sizeof(struct extent_item) * 3);
+	btrfs_set_item_offset(&item, LEAF_DATA_SIZE -
+			      sizeof(struct btrfs_extent_item) * 3);
 	btrfs_set_extent_owner(&extent_item, 2);
 	memcpy(empty_leaf.items + 2, &item, sizeof(item));
 	memcpy(empty_leaf.data + btrfs_item_offset(&item), &extent_item,
 		btrfs_item_size(&item));
-	ret = pwrite(fd, &empty_leaf, sizeof(empty_leaf), 18 * CTREE_BLOCKSIZE);
+	ret = pwrite(fd, &empty_leaf, sizeof(empty_leaf), 18 * BTRFS_BLOCKSIZE);
 	if (ret != sizeof(empty_leaf))
 		return -1;
 	return 0;

fs/btrfs/print-tree.c

@@ -5,14 +5,14 @@
 #include "ctree.h"
 #include "disk-io.h"
 
-void print_leaf(struct leaf *l)
+void btrfs_print_leaf(struct btrfs_leaf *l)
 {
 	int i;
 	u32 nr = btrfs_header_nritems(&l->header);
 	struct btrfs_item *item;
-	struct extent_item *ei;
+	struct btrfs_extent_item *ei;
 	printf("leaf %Lu total ptrs %d free space %d\n",
-		btrfs_header_blocknr(&l->header), nr, leaf_free_space(l));
+		btrfs_header_blocknr(&l->header), nr, btrfs_leaf_free_space(l));
 	fflush(stdout);
 	for (i = 0 ; i < nr ; i++) {
 		item = l->items + i;
@@ -26,24 +26,25 @@ void print_leaf(struct leaf *l)
 		fflush(stdout);
 		printf("\t\titem data %.*s\n", btrfs_item_size(item),
 			l->data + btrfs_item_offset(item));
-		ei = (struct extent_item *)(l->data + btrfs_item_offset(item));
+		ei = (struct btrfs_extent_item *)(l->data +
+						  btrfs_item_offset(item));
 		printf("\t\textent data refs %u owner %Lu\n", ei->refs,
 			ei->owner);
 		fflush(stdout);
 	}
 }
-void print_tree(struct ctree_root *root, struct tree_buffer *t)
+void btrfs_print_tree(struct btrfs_root *root, struct btrfs_buffer *t)
 {
 	int i;
 	u32 nr;
-	struct node *c;
+	struct btrfs_node *c;
 
 	if (!t)
 		return;
 	c = &t->node;
 	nr = btrfs_header_nritems(&c->header);
 	if (btrfs_is_leaf(c)) {
-		print_leaf((struct leaf *)c);
+		btrfs_print_leaf((struct btrfs_leaf *)c);
 		return;
 	}
 	printf("node %Lu level %d total ptrs %d free spc %u\n", t->blocknr,
@@ -58,17 +59,17 @@ void print_tree(struct ctree_root *root, struct tree_buffer *t)
 		fflush(stdout);
 	}
 	for (i = 0; i < nr; i++) {
-		struct tree_buffer *next_buf = read_tree_block(root,
+		struct btrfs_buffer *next_buf = read_tree_block(root,
 						btrfs_node_blockptr(c, i));
-		struct node *next = &next_buf->node;
+		struct btrfs_node *next = &next_buf->node;
 		if (btrfs_is_leaf(next) &&
 		    btrfs_header_level(&c->header) != 1)
 			BUG();
 		if (btrfs_header_level(&next->header) !=
 			btrfs_header_level(&c->header) - 1)
 			BUG();
-		print_tree(root, next_buf);
-		tree_block_release(root, next_buf);
+		btrfs_print_tree(root, next_buf);
+		btrfs_block_release(root, next_buf);
 	}
 
 }

fs/btrfs/print-tree.h

@@ -1,3 +1,3 @@
 
-void print_leaf(struct leaf *l);
-void print_tree(struct ctree_root *root, struct tree_buffer *t);
+void btrfs_print_leaf(struct btrfs_leaf *l);
+void btrfs_print_tree(struct btrfs_root *root, struct btrfs_buffer *t);

fs/btrfs/quick-test.c

@@ -22,9 +22,9 @@ int main(int ac, char **av) {
 	int run_size = 100000;
 	int max_key =  100000000;
 	int tree_size = 0;
-	struct ctree_path path;
-	struct ctree_super_block super;
-	struct ctree_root *root;
+	struct btrfs_path path;
+	struct btrfs_super_block super;
+	struct btrfs_root *root;
 
 	radix_tree_init();
 
@@ -40,12 +40,12 @@ int main(int ac, char **av) {
 		ins.objectid = num;
 		ins.offset = 0;
 		ins.flags = 0;
-		ret = insert_item(root, &ins, buf, strlen(buf));
+		ret = btrfs_insert_item(root, &ins, buf, strlen(buf));
 		if (!ret)
 			tree_size++;
 		free(buf);
 		if (i == run_size - 5) {
-			commit_transaction(root, &super);
+			btrfs_commit_transaction(root, &super);
 		}
 
 	}
@@ -57,16 +57,16 @@ int main(int ac, char **av) {
 	for (i = 0; i < run_size; i++) {
 		num = next_key(i, max_key);
 		ins.objectid = num;
-		init_path(&path);
+		btrfs_init_path(&path);
 		if (i % 10000 == 0)
 			fprintf(stderr, "search %d:%d\n", num, i);
-		ret = search_slot(root, &ins, &path, 0, 0);
+		ret = btrfs_search_slot(root, &ins, &path, 0, 0);
 		if (ret) {
-			print_tree(root, root->node);
+			btrfs_print_tree(root, root->node);
 			printf("unable to find %d\n", num);
 			exit(1);
 		}
-		release_path(root, &path);
+		btrfs_release_path(root, &path);
 	}
 	close_ctree(root, &super);
 	root = open_ctree("dbfile", &super);
@@ -81,17 +81,17 @@ int main(int ac, char **av) {
 	for (i = 0 ; i < run_size/4; i++) {
 		num = next_key(i, max_key);
 		ins.objectid = num;
-		init_path(&path);
-		ret = search_slot(root, &ins, &path, -1, 1);
+		btrfs_init_path(&path);
+		ret = btrfs_search_slot(root, &ins, &path, -1, 1);
 		if (!ret) {
 			if (i % 10000 == 0)
 				fprintf(stderr, "del %d:%d\n", num, i);
-			ret = del_item(root, &path);
+			ret = btrfs_del_item(root, &path);
 			if (ret != 0)
 				BUG();
 			tree_size--;
 		}
-		release_path(root, &path);
+		btrfs_release_path(root, &path);
 	}
 	close_ctree(root, &super);
 	root = open_ctree("dbfile", &super);
@@ -103,7 +103,7 @@ int main(int ac, char **av) {
 		ins.objectid = num;
 		if (i % 10000 == 0)
 			fprintf(stderr, "insert %d:%d\n", num, i);
-		ret = insert_item(root, &ins, buf, strlen(buf));
+		ret = btrfs_insert_item(root, &ins, buf, strlen(buf));
 		if (!ret)
 			tree_size++;
 		free(buf);
@@ -115,25 +115,25 @@ int main(int ac, char **av) {
 	for (i = 0; i < run_size; i++) {
 		num = next_key(i, max_key);
 		ins.objectid = num;
-		init_path(&path);
+		btrfs_init_path(&path);
 		if (i % 10000 == 0)
 			fprintf(stderr, "search %d:%d\n", num, i);
-		ret = search_slot(root, &ins, &path, 0, 0);
+		ret = btrfs_search_slot(root, &ins, &path, 0, 0);
 		if (ret) {
-			print_tree(root, root->node);
+			btrfs_print_tree(root, root->node);
 			printf("unable to find %d\n", num);
 			exit(1);
 		}
-		release_path(root, &path);
+		btrfs_release_path(root, &path);
 	}
 	printf("starting big long delete run\n");
 	while(root->node &&
 	      btrfs_header_nritems(&root->node->node.header) > 0) {
-		struct leaf *leaf;
+		struct btrfs_leaf *leaf;
 		int slot;
 		ins.objectid = (u64)-1;
-		init_path(&path);
-		ret = search_slot(root, &ins, &path, -1, 1);
+		btrfs_init_path(&path);
+		ret = btrfs_search_slot(root, &ins, &path, -1, 1);
 		if (ret == 0)
 			BUG();
 
@@ -149,26 +149,26 @@ int main(int ac, char **av) {
 			btrfs_disk_key_to_cpu(&last, &leaf->items[slot].key);
 			if (tree_size % 10000 == 0)
 				printf("big del %d:%d\n", tree_size, i);
-			ret = del_item(root, &path);
+			ret = btrfs_del_item(root, &path);
 			if (ret != 0) {
 				printf("del_item returned %d\n", ret);
 				BUG();
 			}
 			tree_size--;
 		}
-		release_path(root, &path);
+		btrfs_release_path(root, &path);
 	}
 	/*
 	printf("previous tree:\n");
-	print_tree(root, root->commit_root);
+	btrfs_print_tree(root, root->commit_root);
 	printf("map before commit\n");
-	print_tree(root->extent_root, root->extent_root->node);
+	btrfs_print_tree(root->extent_root, root->extent_root->node);
 	*/
-	commit_transaction(root, &super);
+	btrfs_commit_transaction(root, &super);
 	printf("tree size is now %d\n", tree_size);
 	printf("root %p commit root %p\n", root->node, root->commit_root);
 	printf("map tree\n");
-	print_tree(root->extent_root, root->extent_root->node);
+	btrfs_print_tree(root->extent_root, root->extent_root->node);
 	close_ctree(root, &super);
 	return 0;
 }

fs/btrfs/random-test.c

@@ -8,7 +8,7 @@
 #include "print-tree.h"
 
 int keep_running = 1;
-struct ctree_super_block super;
+struct btrfs_super_block super;
 
 static int setup_key(struct radix_tree_root *root, struct btrfs_key *key,
 		     int exists)
@@ -36,17 +36,17 @@ again:
 	return 0;
 }
 
-static int ins_one(struct ctree_root *root, struct radix_tree_root *radix)
+static int ins_one(struct btrfs_root *root, struct radix_tree_root *radix)
 {
-	struct ctree_path path;
+	struct btrfs_path path;
 	struct btrfs_key key;
 	int ret;
 	char buf[128];
 	unsigned long oid;
-	init_path(&path);
+	btrfs_init_path(&path);
 	ret = setup_key(radix, &key, 0);
 	sprintf(buf, "str-%Lu\n", key.objectid);
-	ret = insert_item(root, &key, buf, strlen(buf));
+	ret = btrfs_insert_item(root, &key, buf, strlen(buf));
 	if (ret)
 		goto error;
 	oid = (unsigned long)key.objectid;
@@ -61,18 +61,18 @@ error:
 	return -1;
 }
 
-static int insert_dup(struct ctree_root *root, struct radix_tree_root *radix)
+static int insert_dup(struct btrfs_root *root, struct radix_tree_root *radix)
 {
-	struct ctree_path path;
+	struct btrfs_path path;
 	struct btrfs_key key;
 	int ret;
 	char buf[128];
-	init_path(&path);
+	btrfs_init_path(&path);
 	ret = setup_key(radix, &key, 1);
 	if (ret < 0)
 		return 0;
 	sprintf(buf, "str-%Lu\n", key.objectid);
-	ret = insert_item(root, &key, buf, strlen(buf));
+	ret = btrfs_insert_item(root, &key, buf, strlen(buf));
 	if (ret != -EEXIST) {
 		printf("insert on %Lu gave us %d\n", key.objectid, ret);
 		return 1;
@@ -80,21 +80,21 @@ static int insert_dup(struct ctree_root *root, struct radix_tree_root *radix)
 	return 0;
 }
 
-static int del_one(struct ctree_root *root, struct radix_tree_root *radix)
+static int del_one(struct btrfs_root *root, struct radix_tree_root *radix)
 {
-	struct ctree_path path;
+	struct btrfs_path path;
 	struct btrfs_key key;
 	int ret;
 	unsigned long *ptr;
-	init_path(&path);
+	btrfs_init_path(&path);
 	ret = setup_key(radix, &key, 1);
 	if (ret < 0)
 		return 0;
-	ret = search_slot(root, &key, &path, -1, 1);
+	ret = btrfs_search_slot(root, &key, &path, -1, 1);
 	if (ret)
 		goto error;
-	ret = del_item(root, &path);
-	release_path(root, &path);
+	ret = btrfs_del_item(root, &path);
+	btrfs_release_path(root, &path);
 	if (ret != 0)
 		goto error;
 	ptr = radix_tree_delete(radix, key.objectid);
@@ -106,17 +106,17 @@ error:
 	return -1;
 }
 
-static int lookup_item(struct ctree_root *root, struct radix_tree_root *radix)
+static int lookup_item(struct btrfs_root *root, struct radix_tree_root *radix)
 {
-	struct ctree_path path;
+	struct btrfs_path path;
 	struct btrfs_key key;
 	int ret;
-	init_path(&path);
+	btrfs_init_path(&path);
 	ret = setup_key(radix, &key, 1);
 	if (ret < 0)
 		return 0;
-	ret = search_slot(root, &key, &path, 0, 1);
-	release_path(root, &path);
+	ret = btrfs_search_slot(root, &key, &path, 0, 1);
+	btrfs_release_path(root, &path);
 	if (ret)
 		goto error;
 	return 0;
@@ -125,17 +125,17 @@ error:
 	return -1;
 }
 
-static int lookup_enoent(struct ctree_root *root, struct radix_tree_root *radix)
+static int lookup_enoent(struct btrfs_root *root, struct radix_tree_root *radix)
 {
-	struct ctree_path path;
+	struct btrfs_path path;
 	struct btrfs_key key;
 	int ret;
-	init_path(&path);
+	btrfs_init_path(&path);
 	ret = setup_key(radix, &key, 0);
 	if (ret < 0)
 		return ret;
-	ret = search_slot(root, &key, &path, 0, 0);
-	release_path(root, &path);
+	ret = btrfs_search_slot(root, &key, &path, 0, 0);
+	btrfs_release_path(root, &path);
 	if (ret <= 0)
 		goto error;
 	return 0;
@@ -144,10 +144,10 @@ error:
 	return -1;
 }
 
-static int empty_tree(struct ctree_root *root, struct radix_tree_root *radix,
+static int empty_tree(struct btrfs_root *root, struct radix_tree_root *radix,
 		      int nr)
 {
-	struct ctree_path path;
+	struct btrfs_path path;
 	struct btrfs_key key;
 	unsigned long found = 0;
 	int ret;
@@ -159,22 +159,22 @@ static int empty_tree(struct ctree_root *root, struct radix_tree_root *radix,
 	key.flags = 0;
 	key.objectid = (unsigned long)-1;
 	while(nr-- >= 0) {
-		init_path(&path);
-		ret = search_slot(root, &key, &path, -1, 1);
+		btrfs_init_path(&path);
+		ret = btrfs_search_slot(root, &key, &path, -1, 1);
 		if (ret < 0) {
-			release_path(root, &path);
+			btrfs_release_path(root, &path);
 			return ret;
 		}
 		if (ret != 0) {
 			if (path.slots[0] == 0) {
-				release_path(root, &path);
+				btrfs_release_path(root, &path);
 				break;
 			}
 			path.slots[0] -= 1;
 		}
 		slot = path.slots[0];
 		found=btrfs_key_objectid(&path.nodes[0]->leaf.items[slot].key);
-		ret = del_item(root, &path);
+		ret = btrfs_del_item(root, &path);
 		count++;
 		if (ret) {
 			fprintf(stderr,
@@ -182,7 +182,7 @@ static int empty_tree(struct ctree_root *root, struct radix_tree_root *radix,
 				found);
 			return -1;
 		}
-		release_path(root, &path);
+		btrfs_release_path(root, &path);
 		ptr = radix_tree_delete(radix, found);
 		if (!ptr)
 			goto error;
@@ -195,7 +195,7 @@ error:
 	return -1;
 }
 
-static int fill_tree(struct ctree_root *root, struct radix_tree_root *radix,
+static int fill_tree(struct btrfs_root *root, struct radix_tree_root *radix,
 		     int count)
 {
 	int i;
@@ -207,7 +207,7 @@ static int fill_tree(struct ctree_root *root, struct radix_tree_root *radix,
 			goto out;
 		}
 		if (i % 1000 == 0) {
-			ret = commit_transaction(root, &super);
+			ret = btrfs_commit_transaction(root, &super);
 			if (ret) {
 				fprintf(stderr, "fill commit failed\n");
 				return ret;
@@ -223,7 +223,7 @@ out:
 	return ret;
 }
 
-static int bulk_op(struct ctree_root *root, struct radix_tree_root *radix)
+static int bulk_op(struct btrfs_root *root, struct radix_tree_root *radix)
 {
 	int ret;
 	int nr = rand() % 5000;
@@ -242,13 +242,13 @@ static int bulk_op(struct ctree_root *root, struct radix_tree_root *radix)
 }
 
 
-int (*ops[])(struct ctree_root *root, struct radix_tree_root *radix) =
+int (*ops[])(struct btrfs_root *root, struct radix_tree_root *radix) =
 	{ ins_one, insert_dup, del_one, lookup_item,
 	  lookup_enoent, bulk_op };
 
-static int fill_radix(struct ctree_root *root, struct radix_tree_root *radix)
+static int fill_radix(struct btrfs_root *root, struct radix_tree_root *radix)
 {
-	struct ctree_path path;
+	struct btrfs_path path;
 	struct btrfs_key key;
 	unsigned long found;
 	int ret;
@@ -259,16 +259,16 @@ static int fill_radix(struct ctree_root *root, struct radix_tree_root *radix)
 	key.flags = 0;
 	key.objectid = (unsigned long)-1;
 	while(1) {
-		init_path(&path);
-		ret = search_slot(root, &key, &path, 0, 0);
+		btrfs_init_path(&path);
+		ret = btrfs_search_slot(root, &key, &path, 0, 0);
 		if (ret < 0) {
-			release_path(root, &path);
+			btrfs_release_path(root, &path);
 			return ret;
 		}
 		slot = path.slots[0];
 		if (ret != 0) {
 			if (slot == 0) {
-				release_path(root, &path);
+				btrfs_release_path(root, &path);
 				break;
 			}
 			slot -= 1;
@@ -287,7 +287,7 @@ static int fill_radix(struct ctree_root *root, struct radix_tree_root *radix)
 
 			radix_tree_preload_end();
 		}
-		release_path(root, &path);
+		btrfs_release_path(root, &path);
 		key.objectid = found - 1;
 		if (key.objectid > found)
 			break;
@@ -312,7 +312,7 @@ int print_usage(void)
 int main(int ac, char **av)
 {
 	RADIX_TREE(radix, GFP_KERNEL);
-	struct ctree_root *root;
+	struct btrfs_root *root;
 	int i;
 	int ret;
 	int count;
@@ -370,7 +370,7 @@ int main(int ac, char **av)
 			if (ret) {
 				fprintf(stderr, "op %d failed %d:%d\n",
 					op, i, iterations);
-				print_tree(root, root->node);
+				btrfs_print_tree(root, root->node);
 				fprintf(stderr, "op %d failed %d:%d\n",
 					op, i, iterations);
 				err = ret;