srcu_read_unlock(&srcu, id);
}
-void __mmu_notifier_invalidate_range_start(struct mm_struct *mm,
- unsigned long start, unsigned long end)
+int __mmu_notifier_invalidate_range_start(struct mm_struct *mm,
+ unsigned long start, unsigned long end,
+ bool blockable)
{
struct mmu_notifier *mn;
+ int ret = 0;
int id;
id = srcu_read_lock(&srcu);
hlist_for_each_entry_rcu(mn, &mm->mmu_notifier_mm->list, hlist) {
- if (mn->ops->invalidate_range_start)
- mn->ops->invalidate_range_start(mn, mm, start, end);
+ if (mn->ops->invalidate_range_start) {
+ int _ret = mn->ops->invalidate_range_start(mn, mm, start, end, blockable);
+ if (_ret) {
+ pr_info("%pS callback failed with %d in %sblockable context.\n",
+ mn->ops->invalidate_range_start, _ret,
+ !blockable ? "non-" : "");
+ ret = _ret;
+ }
+ }
}
srcu_read_unlock(&srcu, id);
+
+ return ret;
}
EXPORT_SYMBOL_GPL(__mmu_notifier_invalidate_range_start);