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https://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson
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765f34fe32
This patch introduces the C-language equivalents of the functions below: int ext2_set_bit_atomic(int nr, volatile unsigned long *addr); int ext2_clear_bit_atomic(int nr, volatile unsigned long *addr); In include/asm-generic/bitops/ext2-atomic.h This code largely copied from: include/asm-sparc/bitops.h Signed-off-by: Akinobu Mita <mita@miraclelinux.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
23 lines
529 B
C
23 lines
529 B
C
#ifndef _ASM_GENERIC_BITOPS_EXT2_ATOMIC_H_
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#define _ASM_GENERIC_BITOPS_EXT2_ATOMIC_H_
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#define ext2_set_bit_atomic(lock, nr, addr) \
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({ \
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int ret; \
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spin_lock(lock); \
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ret = ext2_set_bit((nr), (unsigned long *)(addr)); \
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spin_unlock(lock); \
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ret; \
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})
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#define ext2_clear_bit_atomic(lock, nr, addr) \
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({ \
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int ret; \
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spin_lock(lock); \
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ret = ext2_clear_bit((nr), (unsigned long *)(addr)); \
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spin_unlock(lock); \
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ret; \
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})
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#endif /* _ASM_GENERIC_BITOPS_EXT2_ATOMIC_H_ */
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