Root/fs/btrfs/locking.h

1/*
2 * Copyright (C) 2008 Oracle. All rights reserved.
3 *
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public
6 * License v2 as published by the Free Software Foundation.
7 *
8 * This program is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
11 * General Public License for more details.
12 *
13 * You should have received a copy of the GNU General Public
14 * License along with this program; if not, write to the
15 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
16 * Boston, MA 021110-1307, USA.
17 */
18
19#ifndef __BTRFS_LOCKING_
20#define __BTRFS_LOCKING_
21
22int btrfs_tree_lock(struct extent_buffer *eb);
23int btrfs_tree_unlock(struct extent_buffer *eb);
24
25int btrfs_try_tree_lock(struct extent_buffer *eb);
26int btrfs_try_spin_lock(struct extent_buffer *eb);
27
28void btrfs_set_lock_blocking(struct extent_buffer *eb);
29void btrfs_clear_lock_blocking(struct extent_buffer *eb);
30void btrfs_assert_tree_locked(struct extent_buffer *eb);
31#endif
32

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