btrfs: remove all unused functions

Remove static and global declarations and/or definitions. Reduces size
of btrfs.ko by ~3.4kB.

  text    data     bss     dec     hex filename
402081    7464     200  409745   64091 btrfs.ko.base
398620    7144     200  405964   631cc btrfs.ko.remove-all

Signed-off-by: David Sterba <dsterba@suse.cz>

1 files changed, 0 insertions, 19 deletions

diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c
index e21130d3f98a..cd0b31a9ba3d 100644
--- a/fs/btrfs/volumes.c
+++ b/fs/btrfs/volumes.c
@@ -44,16 +44,6 @@ static int btrfs_relocate_sys_chunks(struct btrfs_root *root);
 static DEFINE_MUTEX(uuid_mutex);
 static LIST_HEAD(fs_uuids);
 
-void btrfs_lock_volumes(void)
-{
-        mutex_lock(&uuid_mutex);
-}
-
-void btrfs_unlock_volumes(void)
-{
-        mutex_unlock(&uuid_mutex);
-}
-
 static void lock_chunks(struct btrfs_root *root)
 {
         mutex_lock(&root->fs_info->chunk_mutex);
@@ -3688,15 +3678,6 @@ static int read_one_dev(struct btrfs_root *root,
         return ret;
 }
 
-int btrfs_read_super_device(struct btrfs_root *root, struct extent_buffer *buf)
-{
-        struct btrfs_dev_item *dev_item;
-
-        dev_item = (struct btrfs_dev_item *)offsetof(struct btrfs_super_block,
-                                                     dev_item);
-        return read_one_dev(root, buf, dev_item);
-}
-
 int btrfs_read_sys_array(struct btrfs_root *root)
 {
         struct btrfs_super_block *super_copy = &root->fs_info->super_copy;