* Protected by kmmio_lock, when linked into kmmio_page_table.
*/
int count;
+
+ bool scheduled_for_release;
};
struct kmmio_delayed_release {
BUG_ON(f->count < 0);
if (!f->count) {
disarm_kmmio_fault_page(f);
- f->release_next = *release_list;
- *release_list = f;
+ if (!f->scheduled_for_release) {
+ f->release_next = *release_list;
+ *release_list = f;
+ f->scheduled_for_release = true;
+ }
}
}
prevp = &f->release_next;
} else {
*prevp = f->release_next;
+ f->release_next = NULL;
+ f->scheduled_for_release = false;
}
- f = f->release_next;
+ f = *prevp;
}
spin_unlock_irqrestore(&kmmio_lock, flags);
kmmio_count--;
spin_unlock_irqrestore(&kmmio_lock, flags);
+ if (!release_list)
+ return;
+
drelease = kmalloc(sizeof(*drelease), GFP_ATOMIC);
if (!drelease) {
pr_crit("leaking kmmio_fault_page objects.\n");