diff options
Diffstat (limited to 'mm/mmu_notifier.c')
| -rw-r--r-- | mm/mmu_notifier.c | 19 |
1 files changed, 15 insertions, 4 deletions
diff --git a/mm/mmu_notifier.c b/mm/mmu_notifier.c index eff6b88a993f..82bb1a939c0e 100644 --- a/mm/mmu_notifier.c +++ b/mm/mmu_notifier.c @@ -174,18 +174,29 @@ void __mmu_notifier_change_pte(struct mm_struct *mm, unsigned long address, 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); |