btrfs: make static code static & remove dead code

Big patch, but all it does is add statics to functions which
are in fact static, then remove the associated dead-code fallout.

removed functions:

btrfs_iref_to_path()
__btrfs_lookup_delayed_deletion_item()
__btrfs_search_delayed_insertion_item()
__btrfs_search_delayed_deletion_item()
find_eb_for_page()
btrfs_find_block_group()
range_straddles_pages()
extent_range_uptodate()
btrfs_file_extent_length()
btrfs_scrub_cancel_devid()
btrfs_start_transaction_lflush()

btrfs_print_tree() is left because it is used for debugging.
btrfs_start_transaction_lflush() and btrfs_reada_detach() are
left for symmetry.

ulist.c functions are left, another patch will take care of those.

Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Signed-off-by: Josef Bacik <jbacik@fusionio.com>

1 files changed, 7 insertions, 4 deletions

diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index 0eab7b67e109..ec63d7af3460 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -103,6 +103,8 @@ static struct extent_map *create_pinned_em(struct inode *inode, u64 start,
                                            u64 orig_block_len, u64 ram_bytes,
                                            int type);
 
+static int btrfs_dirty_inode(struct inode *inode);
+
 static int btrfs_init_inode_security(struct btrfs_trans_handle *trans,
                                      struct inode *inode,  struct inode *dir,
                                      const struct qstr *qstr)
@@ -3024,7 +3026,8 @@ int btrfs_orphan_add(struct btrfs_trans_handle *trans, struct inode *inode)
  * We have done the truncate/delete so we can go ahead and remove the orphan
  * item for this particular inode.
  */
-int btrfs_orphan_del(struct btrfs_trans_handle *trans, struct inode *inode)
+static int btrfs_orphan_del(struct btrfs_trans_handle *trans,
+                            struct inode *inode)
 {
         struct btrfs_root *root = BTRFS_I(inode)->root;
         int delete_item = 0;
@@ -5342,7 +5345,7 @@ int btrfs_write_inode(struct inode *inode, struct writeback_control *wbc)
  * FIXME, needs more benchmarking...there are no reasons other than performance
  * to keep or drop this code.
  */
-int btrfs_dirty_inode(struct inode *inode)
+static int btrfs_dirty_inode(struct inode *inode)
 {
         struct btrfs_root *root = BTRFS_I(inode)->root;
         struct btrfs_trans_handle *trans;
@@ -7437,8 +7440,8 @@ static int btrfs_writepage(struct page *page, struct writeback_control *wbc)
         return extent_write_full_page(tree, page, btrfs_get_extent, wbc);
 }
 
-int btrfs_writepages(struct address_space *mapping,
-                     struct writeback_control *wbc)
+static int btrfs_writepages(struct address_space *mapping,
+                            struct writeback_control *wbc)
 {
         struct extent_io_tree *tree;