linux/include/asm-generic/bitops/le.h
Aneesh Kumar K.V aa02ad67d9 ext4: Add ext4_find_next_bit()
This function is used by the ext4 multi block allocator patches.

Also add generic_find_next_le_bit

Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Cc: <linux-ext4@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2008-01-28 23:58:27 -05:00

57 lines
2 KiB
C

#ifndef _ASM_GENERIC_BITOPS_LE_H_
#define _ASM_GENERIC_BITOPS_LE_H_
#include <asm/types.h>
#include <asm/byteorder.h>
#define BITOP_WORD(nr) ((nr) / BITS_PER_LONG)
#define BITOP_LE_SWIZZLE ((BITS_PER_LONG-1) & ~0x7)
#if defined(__LITTLE_ENDIAN)
#define generic_test_le_bit(nr, addr) test_bit(nr, addr)
#define generic___set_le_bit(nr, addr) __set_bit(nr, addr)
#define generic___clear_le_bit(nr, addr) __clear_bit(nr, addr)
#define generic_test_and_set_le_bit(nr, addr) test_and_set_bit(nr, addr)
#define generic_test_and_clear_le_bit(nr, addr) test_and_clear_bit(nr, addr)
#define generic___test_and_set_le_bit(nr, addr) __test_and_set_bit(nr, addr)
#define generic___test_and_clear_le_bit(nr, addr) __test_and_clear_bit(nr, addr)
#define generic_find_next_zero_le_bit(addr, size, offset) find_next_zero_bit(addr, size, offset)
#define generic_find_next_le_bit(addr, size, offset) \
find_next_bit(addr, size, offset)
#elif defined(__BIG_ENDIAN)
#define generic_test_le_bit(nr, addr) \
test_bit((nr) ^ BITOP_LE_SWIZZLE, (addr))
#define generic___set_le_bit(nr, addr) \
__set_bit((nr) ^ BITOP_LE_SWIZZLE, (addr))
#define generic___clear_le_bit(nr, addr) \
__clear_bit((nr) ^ BITOP_LE_SWIZZLE, (addr))
#define generic_test_and_set_le_bit(nr, addr) \
test_and_set_bit((nr) ^ BITOP_LE_SWIZZLE, (addr))
#define generic_test_and_clear_le_bit(nr, addr) \
test_and_clear_bit((nr) ^ BITOP_LE_SWIZZLE, (addr))
#define generic___test_and_set_le_bit(nr, addr) \
__test_and_set_bit((nr) ^ BITOP_LE_SWIZZLE, (addr))
#define generic___test_and_clear_le_bit(nr, addr) \
__test_and_clear_bit((nr) ^ BITOP_LE_SWIZZLE, (addr))
extern unsigned long generic_find_next_zero_le_bit(const unsigned long *addr,
unsigned long size, unsigned long offset);
extern unsigned long generic_find_next_le_bit(const unsigned long *addr,
unsigned long size, unsigned long offset);
#else
#error "Please fix <asm/byteorder.h>"
#endif
#define generic_find_first_zero_le_bit(addr, size) \
generic_find_next_zero_le_bit((addr), (size), 0)
#endif /* _ASM_GENERIC_BITOPS_LE_H_ */