Oleg Nesterov wrote:
> This patch just makes the SIGNAL_GROUP_COREDUMP check in task_will_free_mem()
> a bit more correct wrt CLONE_VM tasks, nothing more.
OK. Then, that's out of what I can understand. But I wish for
some description to PATCH 2/2 about why to change from
"do { } while_each_thread()" to "for_each_thread() { }"
because they seem to traverse differently.
#define __for_each_thread(signal, t) \
list_for_each_entry_rcu(t, &(signal)->thread_head, thread_node)
#define for_each_thread(p, t) \
__for_each_thread((p)->signal, t)
static inline struct task_struct *next_thread(const struct task_struct *p)
{
return list_entry_rcu(p->thread_group.next,
struct task_struct, thread_group);
}
#define while_each_thread(g, t) \
while ((t = next_thread(t)) != g)
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