diff options
Diffstat (limited to 'fs/udf/balloc.c')
-rw-r--r-- | fs/udf/balloc.c | 59 |
1 files changed, 5 insertions, 54 deletions
diff --git a/fs/udf/balloc.c b/fs/udf/balloc.c index ccc3ad7..9a9378b 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, @@ -172,9 +125,8 @@ static void udf_bitmap_free_blocks(struct super_block *sb, mutex_lock(&sbi->s_alloc_mutex); partmap = &sbi->s_partmaps[bloc->partitionReferenceNum]; - if (bloc->logicalBlockNum < 0 || - (bloc->logicalBlockNum + count) > - partmap->s_partition_len) { + if (bloc->logicalBlockNum + count < count || + (bloc->logicalBlockNum + count) > partmap->s_partition_len) { udf_debug("%d < %d || %d + %d > %d\n", bloc->logicalBlockNum, 0, bloc->logicalBlockNum, count, partmap->s_partition_len); @@ -440,9 +392,8 @@ static void udf_table_free_blocks(struct super_block *sb, mutex_lock(&sbi->s_alloc_mutex); partmap = &sbi->s_partmaps[bloc->partitionReferenceNum]; - if (bloc->logicalBlockNum < 0 || - (bloc->logicalBlockNum + count) > - partmap->s_partition_len) { + if (bloc->logicalBlockNum + count < count || + (bloc->logicalBlockNum + count) > partmap->s_partition_len) { udf_debug("%d < %d || %d + %d > %d\n", bloc->logicalBlockNum, 0, bloc->logicalBlockNum, count, partmap->s_partition_len); |