Eric Dumazet a écrit :
struct fd_map {
/*
* read mostly part
*/
unsigned int base; /* 0x00 */
unsigned int size; /* 0x04 */
struct list_head slist; /* 0x08 */
struct list_head *slots; /* 0x18 */
unsigned long *map; /* 0x28 */
void (*freecb)(void *, struct fd_map *); /* 0x30 */
void *freecb_priv; /* 0x38 */
/*
* written part on a separate cache line in SMP
*/
unsigned int fdnext ____cacheline_aligned_in_smp; /* 0x40 */
struct fd_map *next; /* 0x48 */
struct rcu_head rcu; /* 0x50 */
};
Well, offsets are wrong but layout OK
struct fd_map {
/*
* read mostly part
*/
unsigned int base; /* 0x00 */
unsigned int size; /* 0x04 */
struct list_head slist; /* 0x08 */
struct list_head *slots; /* 0x18 */
unsigned long *map; /* 0x20 */
void (*freecb)(void *, struct fd_map *); /* 0x28 */
void *freecb_priv; /* 0x30 */
/* one 8 bytes hole */
/*
* written part on a separate cache line in SMP
*/
unsigned int fdnext ____cacheline_aligned_in_smp; /* 0x40 */
struct fd_map *next; /* 0x48 */
struct rcu_head rcu; /* 0x50 */
}; /* size 0x60 , aligned to 0x80 */
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