Commit b9b9144a authored by Akinobu Mita's avatar Akinobu Mita Committed by Linus Torvalds
Browse files

reiserfs: use little-endian bitops 



As a preparation for removing ext2 non-atomic bit operations from
asm/bitops.h.  This converts ext2 non-atomic bit operations to
little-endian bit operations.

Signed-off-by: default avatarAkinobu Mita <akinobu.mita@gmail.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent a49ebbab

include/linux/reiserfs_fs.h

+13 −14
Original line number Diff line number Diff line
@@ -1124,15 +1124,18 @@ struct reiserfs_de_head { 
#   define aligned_address(addr)           ((void *)((long)(addr) & ~((1UL << ADDR_UNALIGNED_BITS) - 1)))

#   define unaligned_offset(addr)          (((int)((long)(addr) & ((1 << ADDR_UNALIGNED_BITS) - 1))) << 3)



#   define set_bit_unaligned(nr, addr)     ext2_set_bit((nr) + unaligned_offset(addr), aligned_address(addr))

#   define clear_bit_unaligned(nr, addr)   ext2_clear_bit((nr) + unaligned_offset(addr), aligned_address(addr))

#   define test_bit_unaligned(nr, addr)    ext2_test_bit((nr) + unaligned_offset(addr), aligned_address(addr))

#   define set_bit_unaligned(nr, addr)	\

	__test_and_set_bit_le((nr) + unaligned_offset(addr), aligned_address(addr))

#   define clear_bit_unaligned(nr, addr)	\

	__test_and_clear_bit_le((nr) + unaligned_offset(addr), aligned_address(addr))

#   define test_bit_unaligned(nr, addr)	\

	test_bit_le((nr) + unaligned_offset(addr), aligned_address(addr))



#else



#   define set_bit_unaligned(nr, addr)     ext2_set_bit(nr, addr)

#   define clear_bit_unaligned(nr, addr)   ext2_clear_bit(nr, addr)

#   define test_bit_unaligned(nr, addr)    ext2_test_bit(nr, addr)

#   define set_bit_unaligned(nr, addr)	__test_and_set_bit_le(nr, addr)

#   define clear_bit_unaligned(nr, addr)	__test_and_clear_bit_le(nr, addr)

#   define test_bit_unaligned(nr, addr)	test_bit_le(nr, addr)



#endif
@@ -2329,14 +2332,10 @@ __u32 keyed_hash(const signed char *msg, int len); 
__u32 yura_hash(const signed char *msg, int len);

__u32 r5_hash(const signed char *msg, int len);



/* the ext2 bit routines adjust for big or little endian as

** appropriate for the arch, so in our laziness we use them rather

** than using the bit routines they call more directly.  These

** routines must be used when changing on disk bitmaps.  */

#define reiserfs_test_and_set_le_bit   ext2_set_bit

#define reiserfs_test_and_clear_le_bit ext2_clear_bit

#define reiserfs_test_le_bit           ext2_test_bit

#define reiserfs_find_next_zero_le_bit ext2_find_next_zero_bit

#define reiserfs_test_and_set_le_bit	__test_and_set_bit_le

#define reiserfs_test_and_clear_le_bit	__test_and_clear_bit_le

#define reiserfs_test_le_bit		test_bit_le

#define reiserfs_find_next_zero_le_bit	find_next_zero_bit_le



/* sometimes reiserfs_truncate may require to allocate few new blocks

   to perform indirect2direct conversion. People probably used to

CRA Git | Maintained and supported by SUSTech CRA and CCSE