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author | David Sterba <dsterba@suse.cz> | 2011-05-05 14:44:41 +0400 |
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committer | David Sterba <dsterba@suse.cz> | 2011-05-06 14:34:03 +0400 |
commit | f2a97a9dbd86eb1ef956bdf20e05c507b32beb96 (patch) | |
tree | 756c2db8fee9c02df0e3217ea208a82b5f1d5e78 /fs/btrfs/delayed-ref.c | |
parent | 621496f4fd56195b7b273521f467c2945165481f (diff) | |
download | linux-f2a97a9dbd86eb1ef956bdf20e05c507b32beb96.tar.xz |
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.c | 38 |
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 |