mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-16 07:56:49 +07:00
148817ba09
The majority of architectures implement ext2 atomic bitops as
test_and_{set,clear}_bit() without spinlock.
This adds this type of generic implementation in ext2-atomic-setbit.h and
use it wherever possible.
Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Suggested-by: Andreas Dilger <adilger@dilger.ca>
Suggested-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
27 lines
561 B
C
27 lines
561 B
C
#ifndef _ASM_GENERIC_BITOPS_EXT2_ATOMIC_H_
|
|
#define _ASM_GENERIC_BITOPS_EXT2_ATOMIC_H_
|
|
|
|
/*
|
|
* Spinlock based version of ext2 atomic bitops
|
|
*/
|
|
|
|
#define ext2_set_bit_atomic(lock, nr, addr) \
|
|
({ \
|
|
int ret; \
|
|
spin_lock(lock); \
|
|
ret = __test_and_set_bit_le(nr, addr); \
|
|
spin_unlock(lock); \
|
|
ret; \
|
|
})
|
|
|
|
#define ext2_clear_bit_atomic(lock, nr, addr) \
|
|
({ \
|
|
int ret; \
|
|
spin_lock(lock); \
|
|
ret = __test_and_clear_bit_le(nr, addr); \
|
|
spin_unlock(lock); \
|
|
ret; \
|
|
})
|
|
|
|
#endif /* _ASM_GENERIC_BITOPS_EXT2_ATOMIC_H_ */
|