4 #include <linux/types.h>
7 #define FLEX_ARRAY_PART_SIZE PAGE_SIZE
8 #define FLEX_ARRAY_BASE_SIZE PAGE_SIZE
10 struct flex_array_part;
13 * This is meant to replace cases where an array-like
14 * structure has gotten too big to fit into kmalloc()
15 * and the developer is getting tempted to use
23 int total_nr_elements;
24 struct flex_array_part *parts[];
27 * This little trick makes sure that
28 * sizeof(flex_array) == PAGE_SIZE
30 char padding[FLEX_ARRAY_BASE_SIZE];
34 #define FLEX_ARRAY_INIT(size, total) { { {\
35 .element_size = (size), \
36 .total_nr_elements = (total), \
39 struct flex_array *flex_array_alloc(int element_size, unsigned int total,
41 int flex_array_prealloc(struct flex_array *fa, unsigned int start,
42 unsigned int end, gfp_t flags);
43 void flex_array_free(struct flex_array *fa);
44 void flex_array_free_parts(struct flex_array *fa);
45 int flex_array_put(struct flex_array *fa, unsigned int element_nr, void *src,
47 void *flex_array_get(struct flex_array *fa, unsigned int element_nr);
49 #endif /* _FLEX_ARRAY_H */