1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef _LINUX_REFCOUNT_TYPES_H
3 #define _LINUX_REFCOUNT_TYPES_H
4
5 #include <linux/types.h>
6
7 /**
8 * typedef refcount_t - variant of atomic_t specialized for reference counts
9 * @refs: atomic_t counter field
10 *
11 * The counter saturates at REFCOUNT_SATURATED and will not move once
12 * there. This avoids wrapping the counter and causing 'spurious'
13 * use-after-free bugs.
14 */
15 typedef struct refcount_struct {
16 atomic_t refs;
17 } refcount_t;
18
19 #endif /* _LINUX_REFCOUNT_TYPES_H */
20
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