{
unsigned long precharge;
- down_read(&mm->mmap_sem);
+ mmap_read_lock(mm);
walk_page_range(mm, 0, mm->highest_vm_end, &precharge_walk_ops, NULL);
- up_read(&mm->mmap_sem);
+ mmap_read_unlock(mm);
precharge = mc.precharge;
mc.precharge = 0;
atomic_inc(&mc.from->moving_account);
synchronize_rcu();
retry:
- if (unlikely(!down_read_trylock(&mc.mm->mmap_sem))) {
+ if (unlikely(!mmap_read_trylock(mc.mm))) {
/*
- * Someone who are holding the mmap_sem might be waiting in
+ * Someone who are holding the mmap_lock might be waiting in
* waitq. So we cancel all extra charges, wake up all waiters,
* and retry. Because we cancel precharges, we might not be able
* to move enough charges, but moving charge is a best-effort
walk_page_range(mc.mm, 0, mc.mm->highest_vm_end, &charge_walk_ops,
NULL);
- up_read(&mc.mm->mmap_sem);
+ mmap_read_unlock(mc.mm);
atomic_dec(&mc.from->moving_account);
}