xref: /OK3568_Linux_fs/kernel/include/asm-generic/bitops/ext2-atomic.h (revision 4882a59341e53eb6f0b4789bf948001014eff981) 
1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0 */
2*4882a593Smuzhiyun #ifndef _ASM_GENERIC_BITOPS_EXT2_ATOMIC_H_
3*4882a593Smuzhiyun #define _ASM_GENERIC_BITOPS_EXT2_ATOMIC_H_
4*4882a593Smuzhiyun 
5*4882a593Smuzhiyun /*
6*4882a593Smuzhiyun  * Spinlock based version of ext2 atomic bitops
7*4882a593Smuzhiyun  */
8*4882a593Smuzhiyun 
9*4882a593Smuzhiyun #define ext2_set_bit_atomic(lock, nr, addr)		\
10*4882a593Smuzhiyun 	({						\
11*4882a593Smuzhiyun 		int ret;				\
12*4882a593Smuzhiyun 		spin_lock(lock);			\
13*4882a593Smuzhiyun 		ret = __test_and_set_bit_le(nr, addr);	\
14*4882a593Smuzhiyun 		spin_unlock(lock);			\
15*4882a593Smuzhiyun 		ret;					\
16*4882a593Smuzhiyun 	})
17*4882a593Smuzhiyun 
18*4882a593Smuzhiyun #define ext2_clear_bit_atomic(lock, nr, addr)		\
19*4882a593Smuzhiyun 	({						\
20*4882a593Smuzhiyun 		int ret;				\
21*4882a593Smuzhiyun 		spin_lock(lock);			\
22*4882a593Smuzhiyun 		ret = __test_and_clear_bit_le(nr, addr);	\
23*4882a593Smuzhiyun 		spin_unlock(lock);			\
24*4882a593Smuzhiyun 		ret;					\
25*4882a593Smuzhiyun 	})
26*4882a593Smuzhiyun 
27*4882a593Smuzhiyun #endif /* _ASM_GENERIC_BITOPS_EXT2_ATOMIC_H_ */
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