The current userptr page population will defer work to a work item if
needed to avoid ever taking the mmap_sem in the direct call path. With
the more fine-grained locking in etnaviv this isn't needed anymore, so
a future commit will simplify this code.
Add a lockdep annotation to validate the assumption that the mmap_sem
can be taken in the direct call path.
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Reviewed-by: Christian Gmeiner <christian.gmeiner@gmail.com>
struct mm_struct *mm;
int ret, pinned, npages = etnaviv_obj->base.size >> PAGE_SHIFT;
+ might_lock_read(¤t->mm->mmap_sem);
+
if (etnaviv_obj->userptr.work) {
if (IS_ERR(etnaviv_obj->userptr.work)) {
ret = PTR_ERR(etnaviv_obj->userptr.work);