LXR linux/include/asm-generic/bitops/ext2-atomic.h

   1#ifndef _ASM_GENERIC_BITOPS_EXT2_ATOMIC_H_
   2#define _ASM_GENERIC_BITOPS_EXT2_ATOMIC_H_
   3
   4/*
   5 * Spinlock based version of ext2 atomic bitops
   6 */
   7
   8#define ext2_set_bit_atomic(lock, nr, addr)             \
   9        ({                                              \
  10                int ret;                                \
  11                spin_lock(lock);                        \
  12                ret = __test_and_set_bit_le(nr, addr);  \
  13                spin_unlock(lock);                      \
  14                ret;                                    \
  15        })
  16
  17#define ext2_clear_bit_atomic(lock, nr, addr)           \
  18        ({                                              \
  19                int ret;                                \
  20                spin_lock(lock);                        \
  21                ret = __test_and_clear_bit_le(nr, addr);        \
  22                spin_unlock(lock);                      \
  23                ret;                                    \
  24        })
  25
  26#endif /* _ASM_GENERIC_BITOPS_EXT2_ATOMIC_H_ */
  27