From 989ca65a11c4c537127207eaa019ac4149599017 Mon Sep 17 00:00:00 2001
From: Eric Sandeen <sandeen@redhat.com>
Date: Tue, 6 Aug 2013 20:03:33 -0500
Subject: [PATCH] btrfs-progs: mark static & remove unused from shared kernel
 code

In files copied from the kernel, mark many functions as static,
and remove any resulting dead code.

Some functions are left unmarked if they aren't static in the
kernel tree.

Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Signed-off-by: Chris Mason <chris.mason@fusionio.com>
---
 ctree.c            |   2 +-
 ctree.h            |  43 --------------------
 dir-item.c         |  97 +++-----------------------------------------
 disk-io.c          |  14 ++++---
 disk-io.h          |   4 --
 extent-tree.c      | 115 ++++-------------------------------------------------
 extent_io.c        |  10 +----
 extent_io.h        |   2 -
 file-item.c        |  32 +++------------
 free-space-cache.c |   2 +-
 inode-item.c       |  73 +---------------------------------
 inode-map.c        |  32 ---------------
 qgroup.c           |   4 +-
 qgroup.h           |   2 -
 root-tree.c        |  27 -------------
 volumes.c          |  69 +++-----------------------------
 volumes.h          |   7 ----
 17 files changed, 38 insertions(+), 497 deletions(-)

diff --git a/ctree.c b/ctree.c
index 66b146b..a79ed13 100644
--- a/ctree.c
+++ b/ctree.c
@@ -371,7 +371,7 @@ int btrfs_cow_block(struct btrfs_trans_handle *trans,
 /*
  * compare two keys in a memcmp fashion
  */
-int btrfs_comp_keys(struct btrfs_disk_key *disk, struct btrfs_key *k2)
+static int btrfs_comp_keys(struct btrfs_disk_key *disk, struct btrfs_key *k2)
 {
 	struct btrfs_key k1;
 
diff --git a/ctree.h b/ctree.h
index 257396d..16914a4 100644
--- a/ctree.h
+++ b/ctree.h
@@ -2097,23 +2097,17 @@ static inline int btrfs_fs_incompat(struct btrfs_fs_info *fs_info, u64 flag)
 /* extent-tree.c */
 int btrfs_fix_block_accounting(struct btrfs_trans_handle *trans,
 				 struct btrfs_root *root);
-int btrfs_check_block_accounting(struct btrfs_root *root);
 void btrfs_pin_extent(struct btrfs_fs_info *fs_info, u64 bytenr, u64 num_bytes);
 void btrfs_unpin_extent(struct btrfs_fs_info *fs_info,
 			u64 bytenr, u64 num_bytes);
 int btrfs_extent_post_op(struct btrfs_trans_handle *trans,
 			 struct btrfs_root *root);
-int btrfs_copy_pinned(struct btrfs_root *root, struct extent_io_tree *copy);
 struct btrfs_block_group_cache *btrfs_lookup_block_group(struct
 							 btrfs_fs_info *info,
 							 u64 bytenr);
 struct btrfs_block_group_cache *btrfs_lookup_first_block_group(struct
 						       btrfs_fs_info *info,
 						       u64 bytenr);
-struct btrfs_block_group_cache *btrfs_find_block_group(struct btrfs_root *root,
-						 struct btrfs_block_group_cache
-						 *hint, u64 search_start,
-						 int data, int owner);
 struct extent_buffer *btrfs_alloc_free_block(struct btrfs_trans_handle *trans,
 					struct btrfs_root *root,
 					u32 blocksize, u64 root_objectid,
@@ -2184,7 +2178,6 @@ struct extent_buffer *read_node_slot(struct btrfs_root *root,
 int btrfs_previous_item(struct btrfs_root *root,
 			struct btrfs_path *path, u64 min_objectid,
 			int type);
-int btrfs_comp_keys(struct btrfs_disk_key *disk, struct btrfs_key *k2);
 int btrfs_cow_block(struct btrfs_trans_handle *trans,
 		    struct btrfs_root *root, struct extent_buffer *buf,
 		    struct extent_buffer *parent, int parent_slot,
@@ -2257,8 +2250,6 @@ int btrfs_add_root_ref(struct btrfs_trans_handle *trans,
 		       u64 root_id, u8 type, u64 ref_id,
 		       u64 dirid, u64 sequence,
 		       const char *name, int name_len);
-int btrfs_del_root(struct btrfs_trans_handle *trans, struct btrfs_root *root,
-		   struct btrfs_key *key);
 int btrfs_insert_root(struct btrfs_trans_handle *trans, struct btrfs_root
 		      *root, struct btrfs_key *key, struct btrfs_root_item
 		      *item);
@@ -2276,46 +2267,20 @@ struct btrfs_dir_item *btrfs_lookup_dir_item(struct btrfs_trans_handle *trans,
 					     struct btrfs_path *path, u64 dir,
 					     const char *name, int name_len,
 					     int mod);
-struct btrfs_dir_item *
-btrfs_lookup_dir_index_item(struct btrfs_trans_handle *trans,
-			    struct btrfs_root *root,
-			    struct btrfs_path *path, u64 dir,
-			    u64 objectid, const char *name, int name_len,
-			    int mod);
-struct btrfs_dir_item *btrfs_match_dir_item_name(struct btrfs_root *root,
-			      struct btrfs_path *path,
-			      const char *name, int name_len);
-int btrfs_delete_one_dir_name(struct btrfs_trans_handle *trans,
-			      struct btrfs_root *root,
-			      struct btrfs_path *path,
-			      struct btrfs_dir_item *di);
 int btrfs_insert_xattr_item(struct btrfs_trans_handle *trans,
 			    struct btrfs_root *root, const char *name,
 			    u16 name_len, const void *data, u16 data_len,
 			    u64 dir);
-struct btrfs_dir_item *btrfs_lookup_xattr(struct btrfs_trans_handle *trans,
-					  struct btrfs_root *root,
-					  struct btrfs_path *path, u64 dir,
-					  const char *name, u16 name_len,
-					  int mod);
 /* inode-map.c */
 int btrfs_find_free_objectid(struct btrfs_trans_handle *trans,
 			     struct btrfs_root *fs_root,
 			     u64 dirid, u64 *objectid);
-int btrfs_find_highest_inode(struct btrfs_root *fs_root, u64 *objectid);
 
 /* inode-item.c */
 int btrfs_insert_inode_ref(struct btrfs_trans_handle *trans,
 			   struct btrfs_root *root,
 			   const char *name, int name_len,
 			   u64 inode_objectid, u64 ref_objectid, u64 index);
-int btrfs_del_inode_ref(struct btrfs_trans_handle *trans,
-			   struct btrfs_root *root,
-			   const char *name, int name_len,
-			   u64 inode_objectid, u64 ref_objectid);
-int btrfs_insert_empty_inode(struct btrfs_trans_handle *trans,
-			     struct btrfs_root *root,
-			     struct btrfs_path *path, u64 objectid);
 int btrfs_insert_inode(struct btrfs_trans_handle *trans, struct btrfs_root
 		       *root, u64 objectid, struct btrfs_inode_item
 		       *inode_item);
@@ -2334,17 +2299,9 @@ int btrfs_insert_file_extent(struct btrfs_trans_handle *trans,
 int btrfs_insert_inline_extent(struct btrfs_trans_handle *trans,
 				struct btrfs_root *root, u64 objectid,
 				u64 offset, char *buffer, size_t size);
-int btrfs_lookup_file_extent(struct btrfs_trans_handle *trans,
-			     struct btrfs_root *root,
-			     struct btrfs_path *path, u64 objectid,
-			     u64 bytenr, int mod);
 int btrfs_csum_file_block(struct btrfs_trans_handle *trans,
 			  struct btrfs_root *root, u64 alloc_end,
 			  u64 bytenr, char *data, size_t len);
-struct btrfs_csum_item *btrfs_lookup_csum(struct btrfs_trans_handle *trans,
-					  struct btrfs_root *root,
-					  struct btrfs_path *path,
-					  u64 bytenr, int cow);
 int btrfs_csum_truncate(struct btrfs_trans_handle *trans,
 			struct btrfs_root *root, struct btrfs_path *path,
 			u64 isize);
diff --git a/dir-item.c b/dir-item.c
index beb308d..4d012d4 100644
--- a/dir-item.c
+++ b/dir-item.c
@@ -21,6 +21,10 @@
 #include "hash.h"
 #include "transaction.h"
 
+static struct btrfs_dir_item *btrfs_match_dir_item_name(struct btrfs_root *root,
+			      struct btrfs_path *path,
+			      const char *name, int name_len);
+
 static struct btrfs_dir_item *insert_with_overflow(struct btrfs_trans_handle
 						   *trans,
 						   struct btrfs_root *root,
@@ -215,67 +219,7 @@ struct btrfs_dir_item *btrfs_lookup_dir_item(struct btrfs_trans_handle *trans,
 	return btrfs_match_dir_item_name(root, path, name, name_len);
 }
 
-struct btrfs_dir_item *
-btrfs_lookup_dir_index_item(struct btrfs_trans_handle *trans,
-			    struct btrfs_root *root,
-			    struct btrfs_path *path, u64 dir,
-			    u64 objectid, const char *name, int name_len,
-			    int mod)
-{
-	int ret;
-	struct btrfs_key key;
-	int ins_len = mod < 0 ? -1 : 0;
-	int cow = mod != 0;
-
-	key.objectid = dir;
-	btrfs_set_key_type(&key, BTRFS_DIR_INDEX_KEY);
-	key.offset = objectid;
-
-	ret = btrfs_search_slot(trans, root, &key, path, ins_len, cow);
-	if (ret < 0)
-		return ERR_PTR(ret);
-	if (ret > 0)
-		return ERR_PTR(-ENOENT);
-	return btrfs_match_dir_item_name(root, path, name, name_len);
-}
-
-struct btrfs_dir_item *btrfs_lookup_xattr(struct btrfs_trans_handle *trans,
-					  struct btrfs_root *root,
-					  struct btrfs_path *path, u64 dir,
-					  const char *name, u16 name_len,
-					  int mod)
-{
-	int ret;
-	struct btrfs_key key;
-	int ins_len = mod < 0 ? -1 : 0;
-	int cow = mod != 0;
-	struct btrfs_key found_key;
-	struct extent_buffer *leaf;
-
-	key.objectid = dir;
-	btrfs_set_key_type(&key, BTRFS_XATTR_ITEM_KEY);
-	key.offset = btrfs_name_hash(name, name_len);
-	ret = btrfs_search_slot(trans, root, &key, path, ins_len, cow);
-	if (ret < 0)
-		return ERR_PTR(ret);
-	if (ret > 0) {
-		if (path->slots[0] == 0)
-			return NULL;
-		path->slots[0]--;
-	}
-
-	leaf = path->nodes[0];
-	btrfs_item_key_to_cpu(leaf, &found_key, path->slots[0]);
-
-	if (found_key.objectid != dir ||
-	    btrfs_key_type(&found_key) != BTRFS_XATTR_ITEM_KEY ||
-	    found_key.offset != key.offset)
-		return NULL;
-
-	return btrfs_match_dir_item_name(root, path, name, name_len);
-}
-
-struct btrfs_dir_item *btrfs_match_dir_item_name(struct btrfs_root *root,
+static struct btrfs_dir_item *btrfs_match_dir_item_name(struct btrfs_root *root,
 			      struct btrfs_path *path,
 			      const char *name, int name_len)
 {
@@ -305,34 +249,3 @@ struct btrfs_dir_item *btrfs_match_dir_item_name(struct btrfs_root *root,
 	}
 	return NULL;
 }
-
-int btrfs_delete_one_dir_name(struct btrfs_trans_handle *trans,
-			      struct btrfs_root *root,
-			      struct btrfs_path *path,
-			      struct btrfs_dir_item *di)
-{
-
-	struct extent_buffer *leaf;
-	u32 sub_item_len;
-	u32 item_len;
-	int ret = 0;
-
-	leaf = path->nodes[0];
-	sub_item_len = sizeof(*di) + btrfs_dir_name_len(leaf, di) +
-		btrfs_dir_data_len(leaf, di);
-	item_len = btrfs_item_size_nr(leaf, path->slots[0]);
-	if (sub_item_len == item_len) {
-		ret = btrfs_del_item(trans, root, path);
-	} else {
-		/* MARKER */
-		unsigned long ptr = (unsigned long)di;
-		unsigned long start;
-
-		start = btrfs_item_ptr_offset(leaf, path->slots[0]);
-		memmove_extent_buffer(leaf, ptr, ptr + sub_item_len,
-			item_len - (ptr + sub_item_len - start));
-		ret = btrfs_truncate_item(trans, root, path,
-					  item_len - sub_item_len, 1);
-	}
-	return ret;
-}
diff --git a/disk-io.c b/disk-io.c
index ace09b0..fec7700 100644
--- a/disk-io.c
+++ b/disk-io.c
@@ -112,8 +112,8 @@ int verify_tree_block_csum_silent(struct extent_buffer *buf, u16 csum_size)
 	return __csum_tree_block_size(buf, csum_size, 1, 1);
 }
 
-int csum_tree_block(struct btrfs_root *root, struct extent_buffer *buf,
-		    int verify)
+static int csum_tree_block(struct btrfs_root *root, struct extent_buffer *buf,
+			   int verify)
 {
 	u16 csum_size =
 		btrfs_super_csum_size(root->fs_info->super_copy);
@@ -305,8 +305,9 @@ struct extent_buffer *read_tree_block(struct btrfs_root *root, u64 bytenr,
 	return NULL;
 }
 
-int write_tree_block(struct btrfs_trans_handle *trans, struct btrfs_root *root,
-		     struct extent_buffer *eb)
+static int write_tree_block(struct btrfs_trans_handle *trans,
+			    struct btrfs_root *root,
+			    struct extent_buffer *eb)
 {
 	int ret;
 	int dev_nr;
@@ -1182,8 +1183,9 @@ int btrfs_read_dev_super(int fd, struct btrfs_super_block *sb, u64 sb_bytenr)
 	return transid > 0 ? 0 : -1;
 }
 
-int write_dev_supers(struct btrfs_root *root, struct btrfs_super_block *sb,
-		     struct btrfs_device *device)
+static int write_dev_supers(struct btrfs_root *root,
+			    struct btrfs_super_block *sb,
+			    struct btrfs_device *device)
 {
 	u64 bytenr;
 	u32 crc;
diff --git a/disk-io.h b/disk-io.h
index bc749c3..b61eb43 100644
--- a/disk-io.h
+++ b/disk-io.h
@@ -40,8 +40,6 @@ struct extent_buffer *read_tree_block(struct btrfs_root *root, u64 bytenr,
 				      u32 blocksize, u64 parent_transid);
 int readahead_tree_block(struct btrfs_root *root, u64 bytenr, u32 blocksize,
 			 u64 parent_transid);
-int write_tree_block(struct btrfs_trans_handle *trans, struct btrfs_root *root,
-		     struct extent_buffer *eb);
 struct extent_buffer *btrfs_find_create_tree_block(struct btrfs_root *root,
 						   u64 bytenr, u32 blocksize);
 
@@ -99,8 +97,6 @@ int btrfs_open_device(struct btrfs_device *dev);
 int csum_tree_block_size(struct extent_buffer *buf, u16 csum_sectorsize,
 			 int verify);
 int verify_tree_block_csum_silent(struct extent_buffer *buf, u16 csum_size);
-int csum_tree_block(struct btrfs_root *root, struct extent_buffer *buf,
-		    int verify);
 int btrfs_read_buffer(struct extent_buffer *buf, u64 parent_transid);
 #endif
 
diff --git a/extent-tree.c b/extent-tree.c
index c6896e2..48d06d8 100644
--- a/extent-tree.c
+++ b/extent-tree.c
@@ -57,6 +57,9 @@ static int finish_current_insert(struct btrfs_trans_handle *trans, struct
 				 btrfs_root *extent_root);
 static int del_pending_extents(struct btrfs_trans_handle *trans, struct
 			       btrfs_root *extent_root);
+static struct btrfs_block_group_cache *
+btrfs_find_block_group(struct btrfs_root *root, struct btrfs_block_group_cache
+		       *hint, u64 search_start, int data, int owner);
 
 static int remove_sb_from_cache(struct btrfs_root *root,
 				struct btrfs_block_group_cache *cache)
@@ -314,10 +317,9 @@ static int block_group_state_bits(u64 flags)
 	return bits;
 }
 
-struct btrfs_block_group_cache *btrfs_find_block_group(struct btrfs_root *root,
-						 struct btrfs_block_group_cache
-						 *hint, u64 search_start,
-						 int data, int owner)
+static struct btrfs_block_group_cache *
+btrfs_find_block_group(struct btrfs_root *root, struct btrfs_block_group_cache
+		       *hint, u64 search_start, int data, int owner)
 {
 	struct btrfs_block_group_cache *cache;
 	struct extent_io_tree *block_group_cache;
@@ -2016,25 +2018,6 @@ next:
 	return 0;
 }
 
-int btrfs_copy_pinned(struct btrfs_root *root, struct extent_io_tree *copy)
-{
-	u64 last = 0;
-	u64 start;
-	u64 end;
-	struct extent_io_tree *pinned_extents = &root->fs_info->pinned_extents;
-	int ret;
-
-	while(1) {
-		ret = find_first_extent_bit(pinned_extents, last,
-					    &start, &end, EXTENT_DIRTY);
-		if (ret)
-			break;
-		set_extent_dirty(copy, start, end, GFP_NOFS);
-		last = end + 1;
-	}
-	return 0;
-}
-
 int btrfs_finish_extent_commit(struct btrfs_trans_handle *trans,
 			       struct btrfs_root *root,
 			       struct extent_io_tree *unpin)
@@ -3136,8 +3119,8 @@ int btrfs_free_block_groups(struct btrfs_fs_info *info)
 	return 0;
 }
 
-int find_first_block_group(struct btrfs_root *root, struct btrfs_path *path,
-			   struct btrfs_key *key)
+static int find_first_block_group(struct btrfs_root *root,
+		struct btrfs_path *path, struct btrfs_key *key)
 {
 	int ret;
 	struct btrfs_key found_key;
@@ -3426,88 +3409,6 @@ int btrfs_update_block_group(struct btrfs_trans_handle *trans,
 				  alloc, mark_free);
 }
 
-static int btrfs_count_extents_in_block_group(struct btrfs_root *root,
-					      struct btrfs_path *path, u64 start,
-					      u64 len,
-					      u64 *total)
-{
-	struct btrfs_key key;
-	struct extent_buffer *leaf;
-	u64 bytes_used = 0;
-	int ret;
-	int slot;
-
-	key.offset = 0;
-	key.objectid = start;
-	btrfs_set_key_type(&key, BTRFS_EXTENT_ITEM_KEY);
-	ret = btrfs_search_slot(NULL, root->fs_info->extent_root,
-				&key, path, 0, 0);
-	if (ret < 0)
-		return ret;
-	while(1) {
-		leaf = path->nodes[0];
-		slot = path->slots[0];
-		if (slot >= btrfs_header_nritems(leaf)) {
-			ret = btrfs_next_leaf(root, path);
-			if (ret < 0)
-				return ret;
-			if (ret > 0)
-				break;
-			leaf = path->nodes[0];
-			slot = path->slots[0];
-		}
-		btrfs_item_key_to_cpu(leaf, &key, slot);
-		if (key.objectid > start + len)
-			break;
-		if (key.type == BTRFS_EXTENT_ITEM_KEY)
-			bytes_used += key.offset;
-		if (key.type == BTRFS_METADATA_ITEM_KEY)
-			bytes_used += root->leafsize;
-		path->slots[0]++;
-	}
-	*total = bytes_used;
-	btrfs_release_path(path);
-	return 0;
-}
-
-int btrfs_check_block_accounting(struct btrfs_root *root)
-{
-	int ret;
-	u64 start = 0;
-	u64 bytes_used = 0;
-	struct btrfs_path path;
-	struct btrfs_block_group_cache *cache;
-	struct btrfs_fs_info *fs_info = root->fs_info;
-
-	btrfs_init_path(&path);
-
-	while(1) {
-		cache = btrfs_lookup_block_group(fs_info, start);
-		if (!cache)
-			break;
-
-		ret = btrfs_count_extents_in_block_group(root, &path,
-							 cache->key.objectid,
-							 cache->key.offset,
-							 &bytes_used);
-
-		if (ret == 0) {
-			u64 on_disk = btrfs_block_group_used(&cache->item);
-			if (on_disk != bytes_used) {
-				fprintf(stderr, "bad block group accounting found %llu "
-					"expected %llu block group %llu\n",
-					(unsigned long long)bytes_used,
-					(unsigned long long)on_disk,
-					(unsigned long long)cache->key.objectid);
-			}
-		}
-		start = cache->key.objectid + cache->key.offset;
-
-		cache->space_info->bytes_used = 0;
-	}
-	return 0;
-}
-
 /*
  * Fixup block accounting. The initial block accounting created by
  * make_block_groups isn't accuracy in this case.
diff --git a/extent_io.c b/extent_io.c
index 62c05fe..acc4702 100644
--- a/extent_io.c
+++ b/extent_io.c
@@ -30,8 +30,8 @@
 #include "ctree.h"
 #include "volumes.h"
 
-u64 cache_soft_max = 1024 * 1024 * 256;
-u64 cache_hard_max = 1 * 1024 * 1024 * 1024;
+static u64 cache_soft_max = 1024 * 1024 * 256;
+static u64 cache_hard_max = 1 * 1024 * 1024 * 1024;
 
 void extent_io_tree_init(struct extent_io_tree *tree)
 {
@@ -906,12 +906,6 @@ void copy_extent_buffer(struct extent_buffer *dst, struct extent_buffer *src,
 	memcpy(dst->data + dst_offset, src->data + src_offset, len);
 }
 
-void memcpy_extent_buffer(struct extent_buffer *dst, unsigned long dst_offset,
-			  unsigned long src_offset, unsigned long len)
-{
-	memcpy(dst->data + dst_offset, dst->data + src_offset, len);
-}
-
 void memmove_extent_buffer(struct extent_buffer *dst, unsigned long dst_offset,
 			   unsigned long src_offset, unsigned long len)
 {
diff --git a/extent_io.h b/extent_io.h
index 2604dce..ad283cd 100644
--- a/extent_io.h
+++ b/extent_io.h
@@ -122,8 +122,6 @@ void write_extent_buffer(struct extent_buffer *eb, const void *src,
 void copy_extent_buffer(struct extent_buffer *dst, struct extent_buffer *src,
 			unsigned long dst_offset, unsigned long src_offset,
 			unsigned long len);
-void memcpy_extent_buffer(struct extent_buffer *dst, unsigned long dst_offset,
-			  unsigned long src_offset, unsigned long len);
 void memmove_extent_buffer(struct extent_buffer *dst, unsigned long dst_offset,
 			   unsigned long src_offset, unsigned long len);
 void memset_extent_buffer(struct extent_buffer *eb, char c,
diff --git a/file-item.c b/file-item.c
index e46174d..f53a5ca 100644
--- a/file-item.c
+++ b/file-item.c
@@ -29,12 +29,6 @@
 #define MAX_CSUM_ITEMS(r,size) ((((BTRFS_LEAF_DATA_SIZE(r) - \
 			       sizeof(struct btrfs_item) * 2) / \
 			       size) - 1))
-int btrfs_create_file(struct btrfs_trans_handle *trans,
-		      struct btrfs_root *root, u64 dirid, u64 *objectid)
-{
-	return 0;
-}
-
 int btrfs_insert_file_extent(struct btrfs_trans_handle *trans,
 			     struct btrfs_root *root,
 			     u64 objectid, u64 pos, u64 offset,
@@ -122,10 +116,11 @@ fail:
 	return err;
 }
 
-struct btrfs_csum_item *btrfs_lookup_csum(struct btrfs_trans_handle *trans,
-					  struct btrfs_root *root,
-					  struct btrfs_path *path,
-					  u64 bytenr, int cow)
+static struct btrfs_csum_item *
+btrfs_lookup_csum(struct btrfs_trans_handle *trans,
+		  struct btrfs_root *root,
+		  struct btrfs_path *path,
+		  u64 bytenr, int cow)
 {
 	int ret;
 	struct btrfs_key file_key;
@@ -172,23 +167,6 @@ fail:
 	return ERR_PTR(ret);
 }
 
-int btrfs_lookup_file_extent(struct btrfs_trans_handle *trans,
-			     struct btrfs_root *root,
-			     struct btrfs_path *path, u64 objectid,
-			     u64 offset, int mod)
-{
-	int ret;
-	struct btrfs_key file_key;
-	int ins_len = mod < 0 ? -1 : 0;
-	int cow = mod != 0;
-
-	file_key.objectid = objectid;
-	file_key.offset = offset;
-	btrfs_set_key_type(&file_key, BTRFS_EXTENT_DATA_KEY);
-	ret = btrfs_search_slot(trans, root, &file_key, path, ins_len, cow);
-	return ret;
-}
-
 int btrfs_csum_file_block(struct btrfs_trans_handle *trans,
 			  struct btrfs_root *root, u64 alloc_end,
 			  u64 bytenr, char *data, size_t len)
diff --git a/free-space-cache.c b/free-space-cache.c
index 6c2e189..35edac2 100644
--- a/free-space-cache.c
+++ b/free-space-cache.c
@@ -257,7 +257,7 @@ static int io_ctl_read_bitmap(struct io_ctl *io_ctl,
 }
 
 
-int __load_free_space_cache(struct btrfs_root *root,
+static int __load_free_space_cache(struct btrfs_root *root,
 			    struct btrfs_free_space_ctl *ctl,
 			    struct btrfs_path *path, u64 offset)
 {
diff --git a/inode-item.c b/inode-item.c
index 28865f7..8cc98c6 100644
--- a/inode-item.c
+++ b/inode-item.c
@@ -20,7 +20,7 @@
 #include "disk-io.h"
 #include "transaction.h"
 
-int find_name_in_backref(struct btrfs_path *path, const char * name,
+static int find_name_in_backref(struct btrfs_path *path, const char * name,
 			 int name_len, struct btrfs_inode_ref **ref_ret)
 {
 	struct extent_buffer *leaf;
@@ -49,60 +49,6 @@ int find_name_in_backref(struct btrfs_path *path, const char * name,
 	return 0;
 }
 
-int btrfs_del_inode_ref(struct btrfs_trans_handle *trans,
-			   struct btrfs_root *root,
-			   const char *name, int name_len,
-			   u64 inode_objectid, u64 ref_objectid)
-{
-	struct btrfs_path *path;
-	struct btrfs_key key;
-	struct btrfs_inode_ref *ref;
-	struct extent_buffer *leaf;
-	unsigned long ptr;
-	unsigned long item_start;
-	u32 item_size;
-	u32 sub_item_len;
-	int ret;
-	int del_len = name_len + sizeof(*ref);
-
-	key.objectid = inode_objectid;
-	key.offset = ref_objectid;
-	btrfs_set_key_type(&key, BTRFS_INODE_REF_KEY);
-
-	path = btrfs_alloc_path();
-	if (!path)
-		return -ENOMEM;
-
-	ret = btrfs_search_slot(trans, root, &key, path, -1, 1);
-	if (ret > 0) {
-		ret = -ENOENT;
-		goto out;
-	} else if (ret < 0) {
-		goto out;
-	}
-	if (!find_name_in_backref(path, name, name_len, &ref)) {
-		ret = -ENOENT;
-		goto out;
-	}
-	leaf = path->nodes[0];
-	item_size = btrfs_item_size_nr(leaf, path->slots[0]);
-	if (del_len == item_size) {
-		ret = btrfs_del_item(trans, root, path);
-		goto out;
-	}
-	ptr = (unsigned long)ref;
-	sub_item_len = name_len + sizeof(*ref);
-	item_start = btrfs_item_ptr_offset(leaf, path->slots[0]);
-	memmove_extent_buffer(leaf, ptr, ptr + sub_item_len,
-			      item_size - (ptr + sub_item_len - item_start));
-	ret = btrfs_truncate_item(trans, root, path,
-				  item_size - sub_item_len, 1);
-	BUG_ON(ret);
-out:
-	btrfs_free_path(path);
-	return ret;
-}
-
 int btrfs_insert_inode_ref(struct btrfs_trans_handle *trans,
 			   struct btrfs_root *root,
 			   const char *name, int name_len,
@@ -158,23 +104,6 @@ out:
 	return ret;
 }
 
-int btrfs_insert_empty_inode(struct btrfs_trans_handle *trans,
-			     struct btrfs_root *root,
-			     struct btrfs_path *path, u64 objectid)
-{
-	struct btrfs_key key;
-	int ret;
-	key.objectid = objectid;
-	btrfs_set_key_type(&key, BTRFS_INODE_ITEM_KEY);
-	key.offset = 0;
-
-	ret = btrfs_insert_empty_item(trans, root, path, &key,
-				      sizeof(struct btrfs_inode_item));
-	if (ret == 0 && objectid > root->highest_inode)
-		root->highest_inode = objectid;
-	return ret;
-}
-
 int btrfs_lookup_inode(struct btrfs_trans_handle *trans, struct btrfs_root
 		       *root, struct btrfs_path *path,
 		       struct btrfs_key *location, int mod)
diff --git a/inode-map.c b/inode-map.c
index f901109..3e138b5 100644
--- a/inode-map.c
+++ b/inode-map.c
@@ -20,38 +20,6 @@
 #include "disk-io.h"
 #include "transaction.h"
 
-int btrfs_find_highest_inode(struct btrfs_root *root, u64 *objectid)
-{
-	struct btrfs_path *path;
-	int ret;
-	struct extent_buffer *l;
-	struct btrfs_key search_key;
-	struct btrfs_key found_key;
-	int slot;
-
-	path = btrfs_alloc_path();
-	BUG_ON(!path);
-
-	search_key.objectid = (u64)-1;
-	search_key.offset = (u64)-1;
-	ret = btrfs_search_slot(NULL, root, &search_key, path, 0, 0);
-	if (ret < 0)
-		goto error;
-	BUG_ON(ret == 0);
-	if (path->slots[0] > 0) {
-		slot = path->slots[0] - 1;
-		l = path->nodes[0];
-		btrfs_item_key_to_cpu(l, &found_key, slot);
-		*objectid = found_key.objectid;
-	} else {
-		*objectid = BTRFS_FIRST_FREE_OBJECTID;
-	}
-	ret = 0;
-error:
-	btrfs_free_path(path);
-	return ret;
-}
-
 /*
  * walks the btree of allocated inodes and find a hole.
  */
diff --git a/qgroup.c b/qgroup.c
index dafde12..038c4dc 100644
--- a/qgroup.c
+++ b/qgroup.c
@@ -54,8 +54,8 @@ int qgroup_inherit_size(struct btrfs_qgroup_inherit *p)
 			     2 * p->num_excl_copies);
 }
 
-int qgroup_inherit_realloc(struct btrfs_qgroup_inherit **inherit, int n,
-			   int pos)
+static int
+qgroup_inherit_realloc(struct btrfs_qgroup_inherit **inherit, int n, int pos)
 {
 	struct btrfs_qgroup_inherit *out;
 	int nitems = 0;
diff --git a/qgroup.h b/qgroup.h
index ad14c88..da6d113 100644
--- a/qgroup.h
+++ b/qgroup.h
@@ -24,8 +24,6 @@
 
 u64 parse_qgroupid(char *p);
 int qgroup_inherit_size(struct btrfs_qgroup_inherit *p);
-int qgroup_inherit_realloc(struct btrfs_qgroup_inherit **inherit,
-			   int incgroups, int inccopies);
 int qgroup_inherit_add_group(struct btrfs_qgroup_inherit **inherit, char *arg);
 int qgroup_inherit_add_copy(struct btrfs_qgroup_inherit **inherit, char *arg,
 			    int type);
diff --git a/root-tree.c b/root-tree.c
index ea8c6bb..bdc8504 100644
--- a/root-tree.c
+++ b/root-tree.c
@@ -138,33 +138,6 @@ int btrfs_insert_root(struct btrfs_trans_handle *trans, struct btrfs_root
 	return ret;
 }
 
-int btrfs_del_root(struct btrfs_trans_handle *trans, struct btrfs_root *root,
-		   struct btrfs_key *key)
-{
-	struct btrfs_path *path;
-	int ret;
-	u32 refs;
-	struct btrfs_root_item *ri;
-	struct extent_buffer *leaf;
-
-	path = btrfs_alloc_path();
-	BUG_ON(!path);
-	ret = btrfs_search_slot(trans, root, key, path, -1, 1);
-	if (ret < 0)
-		goto out;
-	BUG_ON(ret != 0);
-	leaf = path->nodes[0];
-	ri = btrfs_item_ptr(leaf, path->slots[0], struct btrfs_root_item);
-
-	refs = btrfs_disk_root_refs(leaf, ri);
-	BUG_ON(refs != 0);
-	ret = btrfs_del_item(trans, root, path);
-out:
-	btrfs_release_path(path);
-	btrfs_free_path(path);
-	return ret;
-}
-
 /*
  * add a btrfs_root_ref item.  type is either BTRFS_ROOT_REF_KEY
  * or BTRFS_ROOT_BACKREF_KEY.
diff --git a/volumes.c b/volumes.c
index 9f65f12..1f172b5 100644
--- a/volumes.c
+++ b/volumes.c
@@ -379,11 +379,11 @@ error:
 	return ret;
 }
 
-int btrfs_alloc_dev_extent(struct btrfs_trans_handle *trans,
-			   struct btrfs_device *device,
-			   u64 chunk_tree, u64 chunk_objectid,
-			   u64 chunk_offset,
-			   u64 num_bytes, u64 *start)
+static int btrfs_alloc_dev_extent(struct btrfs_trans_handle *trans,
+				  struct btrfs_device *device,
+				  u64 chunk_tree, u64 chunk_objectid,
+				  u64 chunk_offset,
+				  u64 num_bytes, u64 *start)
 {
 	int ret;
 	struct btrfs_path *path;
@@ -1000,11 +1000,6 @@ int btrfs_alloc_data_chunk(struct btrfs_trans_handle *trans,
 	return ret;
 }
 
-void btrfs_mapping_init(struct btrfs_mapping_tree *tree)
-{
-	cache_tree_init(&tree->cache_tree);
-}
-
 int btrfs_num_copies(struct btrfs_mapping_tree *map_tree, u64 logical, u64 len)
 {
 	struct cache_extent *ce;
@@ -1401,60 +1396,6 @@ btrfs_find_device_by_devid(struct btrfs_fs_devices *fs_devices,
 	return NULL;
 }
 
-int btrfs_bootstrap_super_map(struct btrfs_mapping_tree *map_tree,
-			      struct btrfs_fs_devices *fs_devices)
-{
-	struct map_lookup *map;
-	u64 logical = BTRFS_SUPER_INFO_OFFSET;
-	u64 length = BTRFS_SUPER_INFO_SIZE;
-	int num_stripes = 0;
-	int sub_stripes = 0;
-	int ret;
-	int i;
-	struct list_head *cur;
-
-	list_for_each(cur, &fs_devices->devices) {
-		num_stripes++;
-	}
-	map = kmalloc(btrfs_map_lookup_size(num_stripes), GFP_NOFS);
-	if (!map)
-		return -ENOMEM;
-
-	map->ce.start = logical;
-	map->ce.size = length;
-	map->num_stripes = num_stripes;
-	map->sub_stripes = sub_stripes;
-	map->io_width = length;
-	map->io_align = length;
-	map->sector_size = length;
-	map->stripe_len = length;
-	map->type = BTRFS_BLOCK_GROUP_RAID1;
-
-	i = 0;
-	list_for_each(cur, &fs_devices->devices) {
-		struct btrfs_device *device = list_entry(cur,
-							 struct btrfs_device,
-							 dev_list);
-		map->stripes[i].physical = logical;
-		map->stripes[i].dev = device;
-		i++;
-	}
-	ret = insert_cache_extent(&map_tree->cache_tree, &map->ce);
-	if (ret == -EEXIST) {
-		struct cache_extent *old;
-		struct map_lookup *old_map;
-		old = lookup_cache_extent(&map_tree->cache_tree,
-					  logical, length);
-		old_map = container_of(old, struct map_lookup, ce);
-		remove_cache_extent(&map_tree->cache_tree, old);
-		kfree(old_map);
-		ret = insert_cache_extent(&map_tree->cache_tree,
-						   &map->ce);
-	}
-	BUG_ON(ret);
-	return 0;
-}
-
 int btrfs_chunk_readonly(struct btrfs_root *root, u64 chunk_offset)
 {
 	struct cache_extent *ce;
diff --git a/volumes.h b/volumes.h
index e36f2f5..2802cb0 100644
--- a/volumes.h
+++ b/volumes.h
@@ -141,11 +141,6 @@ struct map_lookup {
 #define BTRFS_RAID6_Q_STRIPE ((u64)-1)
 
 
-int btrfs_alloc_dev_extent(struct btrfs_trans_handle *trans,
-			   struct btrfs_device *device,
-			   u64 chunk_tree, u64 chunk_objectid,
-			   u64 chunk_offset,
-			   u64 num_bytes, u64 *start);
 int __btrfs_map_block(struct btrfs_mapping_tree *map_tree, int rw,
 		      u64 logical, u64 *length, u64 *type,
 		      struct btrfs_multi_bio **multi_ret, int mirror_num,
@@ -183,8 +178,6 @@ int btrfs_scan_one_device(int fd, const char *path,
 			  struct btrfs_fs_devices **fs_devices_ret,
 			  u64 *total_devs, u64 super_offset);
 int btrfs_num_copies(struct btrfs_mapping_tree *map_tree, u64 logical, u64 len);
-int btrfs_bootstrap_super_map(struct btrfs_mapping_tree *map_tree,
-			      struct btrfs_fs_devices *fs_devices);
 struct list_head *btrfs_scanned_uuids(void);
 int btrfs_add_system_chunk(struct btrfs_trans_handle *trans,
 			   struct btrfs_root *root, struct btrfs_key *key,
-- 
2.7.4