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Commit aa02ad67 authored by Aneesh Kumar K.V's avatar Aneesh Kumar K.V Committed by Theodore Ts'o
Browse files

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: default avatarAneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Cc: <linux-ext4@vger.kernel.org>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
parent c549a95d

include/asm-arm/bitops.h

+2 −0
Original line number Diff line number Diff line
@@ -310,6 +310,8 @@ static inline int constant_fls(int x) 
		_find_first_zero_bit_le(p,sz)

#define ext2_find_next_zero_bit(p,sz,off)	\

		_find_next_zero_bit_le(p,sz,off)

#define ext2_find_next_bit(p, sz, off) \

		_find_next_bit_le(p, sz, off)



/*

 * Minix is defined to use little-endian byte ordering.

include/asm-generic/bitops/ext2-non-atomic.h

+2 −0
Original line number Diff line number Diff line
@@ -14,5 +14,7 @@ 
	generic_find_first_zero_le_bit((unsigned long *)(addr), (size))

#define ext2_find_next_zero_bit(addr, size, off) \

	generic_find_next_zero_le_bit((unsigned long *)(addr), (size), (off))

#define ext2_find_next_bit(addr, size, off) \

	generic_find_next_le_bit((unsigned long *)(addr), (size), (off))



#endif /* _ASM_GENERIC_BITOPS_EXT2_NON_ATOMIC_H_ */

include/asm-generic/bitops/le.h

+4 −0
Original line number Diff line number Diff line
@@ -20,6 +20,8 @@ 
#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)
@@ -42,6 +44,8 @@ 


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>"

include/asm-m68k/bitops.h

+2 −0
Original line number Diff line number Diff line
@@ -410,6 +410,8 @@ static inline int ext2_find_next_zero_bit(const void *vaddr, unsigned size, 
	res = ext2_find_first_zero_bit (p, size - 32 * (p - addr));

	return (p - addr) * 32 + res;

}

#define ext2_find_next_bit(addr, size, off) \

	generic_find_next_le_bit((unsigned long *)(addr), (size), (off))



#endif /* __KERNEL__ */

include/asm-m68knommu/bitops.h

+2 −0
Original line number Diff line number Diff line
@@ -294,6 +294,8 @@ static __inline__ unsigned long ext2_find_next_zero_bit(void *addr, unsigned lon 
	return result + ffz(__swab32(tmp));

}



#define ext2_find_next_bit(addr, size, off) \

	generic_find_next_le_bit((unsigned long *)(addr), (size), (off))

#include <asm-generic/bitops/minix.h>



#endif /* __KERNEL__ */