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authorDavid Sterba <dsterba@suse.cz>2011-05-05 12:44:41 +0200
committerDavid Sterba <dsterba@suse.cz>2011-05-06 12:34:03 +0200
commitf2a97a9dbd86eb1ef956bdf20e05c507b32beb96 (patch)
tree756c2db8fee9c02df0e3217ea208a82b5f1d5e78 /fs/btrfs/delayed-ref.c
parent621496f4fd56195b7b273521f467c2945165481f (diff)
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>
Diffstat (limited to 'fs/btrfs/delayed-ref.c')
-rw-r--r--fs/btrfs/delayed-ref.c38
1 files changed, 0 insertions, 38 deletions
diff --git a/fs/btrfs/delayed-ref.c b/fs/btrfs/delayed-ref.c
index bce28f653899..cb9b9a431fc9 100644
--- a/fs/btrfs/delayed-ref.c
+++ b/fs/btrfs/delayed-ref.c
@@ -281,44 +281,6 @@ again:
}
/*
- * This checks to see if there are any delayed refs in the
- * btree for a given bytenr. It returns one if it finds any
- * and zero otherwise.
- *
- * If it only finds a head node, it returns 0.
- *
- * The idea is to use this when deciding if you can safely delete an
- * extent from the extent allocation tree. There may be a pending
- * ref in the rbtree that adds or removes references, so as long as this
- * returns one you need to leave the BTRFS_EXTENT_ITEM in the extent
- * allocation tree.
- */
-int btrfs_delayed_ref_pending(struct btrfs_trans_handle *trans, u64 bytenr)
-{
- struct btrfs_delayed_ref_node *ref;
- struct btrfs_delayed_ref_root *delayed_refs;
- struct rb_node *prev_node;
- int ret = 0;
-
- delayed_refs = &trans->transaction->delayed_refs;
- spin_lock(&delayed_refs->lock);
-
- ref = find_ref_head(&delayed_refs->root, bytenr, NULL);
- if (ref) {
- prev_node = rb_prev(&ref->rb_node);
- if (!prev_node)
- goto out;
- ref = rb_entry(prev_node, struct btrfs_delayed_ref_node,
- rb_node);
- if (ref->bytenr == bytenr)
- ret = 1;
- }
-out:
- spin_unlock(&delayed_refs->lock);
- return ret;
-}
-
-/*
* helper function to update an extent delayed ref in the
* rbtree. existing and update must both have the same
* bytenr and parent