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atomisp: use get_user_pages_fast() 

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro 2017-09-22 18:21:11 -04:00
parent 43bfe7bc3c
commit e1a58a5421
1 changed files with 2 additions and 4 deletions
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6
drivers/staging/media/atomisp/pci/atomisp2/hmm/hmm_bo.c
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@ -1029,10 +1029,8 @@ static int alloc_user_pages(struct hmm_buffer_object *bo,
} else {
/*Handle frame buffer allocated in user space*/
mutex_unlock(&bo->mutex);
down_read(&current->mm->mmap_sem);
page_nr = get_user_pages((unsigned long)userptr,
(int)(bo->pgnr), 1, pages, NULL);
up_read(&current->mm->mmap_sem);
page_nr = get_user_pages_fast((unsigned long)userptr,
(int)(bo->pgnr), 1, pages);
mutex_lock(&bo->mutex);
bo->mem_type = HMM_BO_MEM_TYPE_USER;
}