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1f95ec012c
The function belongs to the family of locking functions, so move it there. The 'noinline' keyword is dropped as it's now an exported function that does not need it. Reviewed-by: Josef Bacik <josef@toxicpanda.com> Signed-off-by: David Sterba <dsterba@suse.com>
52 lines
1.5 KiB
C
52 lines
1.5 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Copyright (C) 2008 Oracle. All rights reserved.
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*/
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#ifndef BTRFS_LOCKING_H
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#define BTRFS_LOCKING_H
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#include "extent_io.h"
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#define BTRFS_WRITE_LOCK 1
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#define BTRFS_READ_LOCK 2
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#define BTRFS_WRITE_LOCK_BLOCKING 3
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#define BTRFS_READ_LOCK_BLOCKING 4
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void btrfs_tree_lock(struct extent_buffer *eb);
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void btrfs_tree_unlock(struct extent_buffer *eb);
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void btrfs_tree_read_lock(struct extent_buffer *eb);
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void btrfs_tree_read_unlock(struct extent_buffer *eb);
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void btrfs_tree_read_unlock_blocking(struct extent_buffer *eb);
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void btrfs_set_lock_blocking_read(struct extent_buffer *eb);
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void btrfs_set_lock_blocking_write(struct extent_buffer *eb);
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int btrfs_try_tree_read_lock(struct extent_buffer *eb);
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int btrfs_try_tree_write_lock(struct extent_buffer *eb);
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int btrfs_tree_read_lock_atomic(struct extent_buffer *eb);
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#ifdef CONFIG_BTRFS_DEBUG
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static inline void btrfs_assert_tree_locked(struct extent_buffer *eb) {
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BUG_ON(!eb->write_locks);
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}
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#else
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static inline void btrfs_assert_tree_locked(struct extent_buffer *eb) { }
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#endif
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void btrfs_set_path_blocking(struct btrfs_path *p);
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void btrfs_unlock_up_safe(struct btrfs_path *path, int level);
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static inline void btrfs_tree_unlock_rw(struct extent_buffer *eb, int rw)
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{
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if (rw == BTRFS_WRITE_LOCK || rw == BTRFS_WRITE_LOCK_BLOCKING)
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btrfs_tree_unlock(eb);
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else if (rw == BTRFS_READ_LOCK_BLOCKING)
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btrfs_tree_read_unlock_blocking(eb);
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else if (rw == BTRFS_READ_LOCK)
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btrfs_tree_read_unlock(eb);
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else
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BUG();
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}
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#endif
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