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, 27 deletions

diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c
index 4084959b36fd..fa287c551ffc 100644
--- a/fs/btrfs/disk-io.c
+++ b/fs/btrfs/disk-io.c
@@ -650,12 +650,6 @@ unsigned long btrfs_async_submit_limit(struct btrfs_fs_info *info)
         return 256 * limit;
 }
 
-int btrfs_congested_async(struct btrfs_fs_info *info, int iodone)
-{
-        return atomic_read(&info->nr_async_bios) >
-                btrfs_async_submit_limit(info);
-}
-
 static void run_one_async_start(struct btrfs_work *work)
 {
         struct async_submit_bio *async;
@@ -1283,21 +1277,6 @@ out:
         return root;
 }
 
-struct btrfs_root *btrfs_lookup_fs_root(struct btrfs_fs_info *fs_info,
-                                        u64 root_objectid)
-{
-        struct btrfs_root *root;
-
-        if (root_objectid == BTRFS_ROOT_TREE_OBJECTID)
-                return fs_info->tree_root;
-        if (root_objectid == BTRFS_EXTENT_TREE_OBJECTID)
-                return fs_info->extent_root;
-
-        root = radix_tree_lookup(&fs_info->fs_roots_radix,
-                                 (unsigned long)root_objectid);
-        return root;
-}
-
 struct btrfs_root *btrfs_read_fs_root_no_name(struct btrfs_fs_info *fs_info,
                                               struct btrfs_key *location)
 {
@@ -1369,11 +1348,6 @@ fail:
         return ERR_PTR(ret);
 }
 
-struct btrfs_root *btrfs_read_fs_root(struct btrfs_fs_info *fs_info,
-                                      struct btrfs_key *location,
-                                      const char *name, int namelen)
-{
-        return btrfs_read_fs_root_no_name(fs_info, location);
 #if 0
         struct btrfs_root *root;
         int ret;
@@ -1402,7 +1376,6 @@ struct btrfs_root *btrfs_read_fs_root(struct btrfs_fs_info *fs_info,
         root->in_sysfs = 1;
         return root;
 #endif
-}
 
 static int btrfs_congested_fn(void *congested_data, int bdi_bits)
 {