diff options
author | Jens Axboe <jens.axboe@oracle.com> | 2010-03-19 08:05:10 +0100 |
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committer | Jens Axboe <jens.axboe@oracle.com> | 2010-03-19 08:05:10 +0100 |
commit | b4b7a4ef097f288f724420b473dbf92a89c0ab7e (patch) | |
tree | 23ad8101e3e77c32a8d1e1b95a9c1cd7f7a475b7 /fs/udf/balloc.c | |
parent | e9ce335df51ff782035a15c261a3c0c9892a1767 (diff) | |
parent | a3d3203e4bb40f253b1541e310dc0f9305be7c84 (diff) |
Merge branch 'master' into for-linus
Conflicts:
block/Kconfig
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Diffstat (limited to 'fs/udf/balloc.c')
-rw-r--r-- | fs/udf/balloc.c | 49 |
1 files changed, 1 insertions, 48 deletions
diff --git a/fs/udf/balloc.c b/fs/udf/balloc.c index ccc3ad7242d..19626e2491c 100644 --- a/fs/udf/balloc.c +++ b/fs/udf/balloc.c @@ -31,55 +31,8 @@ #define udf_clear_bit(nr, addr) ext2_clear_bit(nr, addr) #define udf_set_bit(nr, addr) ext2_set_bit(nr, addr) #define udf_test_bit(nr, addr) ext2_test_bit(nr, addr) -#define udf_find_first_one_bit(addr, size) find_first_one_bit(addr, size) #define udf_find_next_one_bit(addr, size, offset) \ - find_next_one_bit(addr, size, offset) - -#define leBPL_to_cpup(x) leNUM_to_cpup(BITS_PER_LONG, x) -#define leNUM_to_cpup(x, y) xleNUM_to_cpup(x, y) -#define xleNUM_to_cpup(x, y) (le ## x ## _to_cpup(y)) -#define uintBPL_t uint(BITS_PER_LONG) -#define uint(x) xuint(x) -#define xuint(x) __le ## x - -static inline int find_next_one_bit(void *addr, int size, int offset) -{ - uintBPL_t *p = ((uintBPL_t *) addr) + (offset / BITS_PER_LONG); - int result = offset & ~(BITS_PER_LONG - 1); - unsigned long tmp; - - if (offset >= size) - return size; - size -= result; - offset &= (BITS_PER_LONG - 1); - if (offset) { - tmp = leBPL_to_cpup(p++); - tmp &= ~0UL << offset; - if (size < BITS_PER_LONG) - goto found_first; - if (tmp) - goto found_middle; - size -= BITS_PER_LONG; - result += BITS_PER_LONG; - } - while (size & ~(BITS_PER_LONG - 1)) { - tmp = leBPL_to_cpup(p++); - if (tmp) - goto found_middle; - result += BITS_PER_LONG; - size -= BITS_PER_LONG; - } - if (!size) - return result; - tmp = leBPL_to_cpup(p); -found_first: - tmp &= ~0UL >> (BITS_PER_LONG - size); -found_middle: - return result + ffz(~tmp); -} - -#define find_first_one_bit(addr, size)\ - find_next_one_bit((addr), (size), 0) + ext2_find_next_bit(addr, size, offset) static int read_block_bitmap(struct super_block *sb, struct udf_bitmap *bitmap, unsigned int block, |