Hi all
went through LIST_HEAD macros and family.
Looks a little confusing though but shall learn using them as they are
now used extensively across the kernel.
I have a query reagrding it.
consider the code snippet----
----------------------------In sample.h -----------------------------
struct B;
struct A {
int a,
void *b;
struct B *head;
};
/*i want linked list for struct B not A */
struct B {
char b;
struct list_head next;
void *buf;
};
--------------------------sample.c------------------
int fun()
{
struct A *dev = kmalloc(sizeof(*dev), GFP_KERNEL);
/*error checking here*/
....
while( some conditon is true) {
dev->head = kmalloc(sizeof( *(dev->head)), GFP_KERNEL);
/*error checking here*/
....
}
/* traverse the list and do something */
}
I want to use the list* family of macros to avoid writing my own
doubly linked list for keeping struct B pointers list in struct A.
A little help here with the MACROS shall be great.
How am i supposed to use them in this case, where an indirect linked
list( of struct B here) is required rather than in the main structure(
struct A here) itself?
Rather i should ask if i need to kmalloc again for each addition to
the list, why use the MACROS? May be they make coding easier but
certainly a little weird it seems to me.
Any help?
Thank you
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