diff options
Diffstat (limited to 'mm/mmu_notifier.c')
| -rw-r--r-- | mm/mmu_notifier.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/mm/mmu_notifier.c b/mm/mmu_notifier.c index 9e2125ae10a5..05d98167da7b 100644 --- a/mm/mmu_notifier.c +++ b/mm/mmu_notifier.c @@ -21,6 +21,12 @@ /* global SRCU for all MMs */ DEFINE_STATIC_SRCU(srcu); +#ifdef CONFIG_LOCKDEP +struct lockdep_map __mmu_notifier_invalidate_range_start_map = { + .name = "mmu_notifier_invalidate_range_start" +}; +#endif + /* * This function can't run concurrently against mmu_notifier_register * because mm->mm_users > 0 during mmu_notifier_register and exit_mmap @@ -184,6 +190,7 @@ void __mmu_notifier_invalidate_range_end(struct mmu_notifier_range *range, struct mmu_notifier *mn; int id; + lock_map_acquire(&__mmu_notifier_invalidate_range_start_map); id = srcu_read_lock(&srcu); hlist_for_each_entry_rcu(mn, &range->mm->mmu_notifier_mm->list, hlist) { /* @@ -207,6 +214,7 @@ void __mmu_notifier_invalidate_range_end(struct mmu_notifier_range *range, mn->ops->invalidate_range_end(mn, range); } srcu_read_unlock(&srcu, id); + lock_map_release(&__mmu_notifier_invalidate_range_start_map); } void __mmu_notifier_invalidate_range(struct mm_struct *mm, |