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, 8 insertions, 3 deletions

diff --git a/fs/btrfs/compression.c b/fs/btrfs/compression.c
index b9c565028605..b189bd1e7a3e 100644
--- a/fs/btrfs/compression.c
+++ b/fs/btrfs/compression.c
@@ -82,6 +82,10 @@ struct compressed_bio {
         u32 sums;
 };
 
+static int btrfs_decompress_biovec(int type, struct page **pages_in,
+                                   u64 disk_start, struct bio_vec *bvec,
+                                   int vcnt, size_t srclen);
+
 static inline int compressed_bio_size(struct btrfs_root *root,
                                       unsigned long disk_size)
 {
@@ -738,7 +742,7 @@ static int comp_num_workspace[BTRFS_COMPRESS_TYPES];
 static atomic_t comp_alloc_workspace[BTRFS_COMPRESS_TYPES];
 static wait_queue_head_t comp_workspace_wait[BTRFS_COMPRESS_TYPES];
 
-struct btrfs_compress_op *btrfs_compress_op[] = {
+static struct btrfs_compress_op *btrfs_compress_op[] = {
         &btrfs_zlib_compress,
         &btrfs_lzo_compress,
 };
@@ -909,8 +913,9 @@ int btrfs_compress_pages(int type, struct address_space *mapping,
  * be contiguous.  They all correspond to the range of bytes covered by
  * the compressed extent.
  */
-int btrfs_decompress_biovec(int type, struct page **pages_in, u64 disk_start,
-                            struct bio_vec *bvec, int vcnt, size_t srclen)
+static int btrfs_decompress_biovec(int type, struct page **pages_in,
+                                   u64 disk_start, struct bio_vec *bvec,
+                                   int vcnt, size_t srclen)
 {
         struct list_head *workspace;
         int ret;