cache_t *pool_simple_create( unsigned int options,
slab_class_t *slab_class,
unsigned int inum
) {
simple_cache_t *c = _bzero( sizeof( simple_cache_t ) );
_pool_init( c, slab_class, &_G_simple_cache, options, inum );
return c;
}
/* allocate a block and return its block number.
* returns negative value on error. */
int testfs_alloc_block(struct super_block *sb, char *block) {
int phy_block_nr;
phy_block_nr = testfs_get_block_freemap(sb);
// if error occurred, return -ENOSPC
if (phy_block_nr < 0)
return phy_block_nr;
_bzero(block, BLOCK_SIZE);
return sb->sb.data_blocks_start + phy_block_nr;
}
void *
memset(void *b, int c, size_t len)
{
char *bb;
if (c == 0)
_bzero(b, len);
else
for (bb = (char *)b; len--; )
*bb++ = c;
return (b);
}
cache_t *pool_lockless_create( unsigned int options,
slab_class_t *slab_class,
unsigned int inum
) {
/* we will play with pointers as atomic values
* ptrs properties must match atomic word properties
*/
assert(
( alignof( AO_t ) == alignof( void* ) ) &&
( sizeof( AO_t ) == sizeof( void* ) )
);
simple_cache_t *c = _bzero( sizeof( simple_cache_t ) );
_pool_init( c, slab_class, &_G_lockless_cache, options, inum );
return c;
}
