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, 5 insertions, 25 deletions

diff --git a/fs/btrfs/file-item.c b/fs/btrfs/file-item.c
index 769eb86..b193bf3 100644
--- a/fs/btrfs/file-item.c
+++ b/fs/btrfs/file-item.c
@@ -83,10 +83,11 @@ out:
 	return ret;
 }
 
-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;
@@ -152,27 +153,6 @@ int btrfs_lookup_file_extent(struct btrfs_trans_handle *trans,
 	return ret;
 }
 
-u64 btrfs_file_extent_length(struct btrfs_path *path)
-{
-	int extent_type;
-	struct btrfs_file_extent_item *fi;
-	u64 len;
-
-	fi = btrfs_item_ptr(path->nodes[0], path->slots[0],
-			    struct btrfs_file_extent_item);
-	extent_type = btrfs_file_extent_type(path->nodes[0], fi);
-
-	if (extent_type == BTRFS_FILE_EXTENT_REG ||
-	    extent_type == BTRFS_FILE_EXTENT_PREALLOC)
-		len = btrfs_file_extent_num_bytes(path->nodes[0], fi);
-	else if (extent_type == BTRFS_FILE_EXTENT_INLINE)
-		len = btrfs_file_extent_inline_len(path->nodes[0], fi);
-	else
-		BUG();
-
-	return len;
-}
-
 static int __btrfs_lookup_bio_sums(struct btrfs_root *root,
 				   struct inode *inode, struct bio *bio,
 				   u64 logical_offset, u32 *dst, int dio)