On 5/23/19 8:31 AM, Jerome Glisse wrote:
[...]
Reviewed-by: Jérôme Glisse <jglisse@xxxxxxxxxx>
Thanks for the review!
Between i have a wishlist see below
[...]
diff --git a/drivers/infiniband/core/umem.c b/drivers/infiniband/core/umem.c
index e7ea819fcb11..673f0d240b3e 100644
--- a/drivers/infiniband/core/umem.c
+++ b/drivers/infiniband/core/umem.c
@@ -54,9 +54,10 @@ static void __ib_umem_release(struct ib_device *dev, struct ib_umem *umem, int d
for_each_sg_page(umem->sg_head.sgl, &sg_iter, umem->sg_nents, 0) {
page = sg_page_iter_page(&sg_iter);
- if (!PageDirty(page) && umem->writable && dirty)
- set_page_dirty_lock(page);
- put_page(page);
+ if (umem->writable && dirty)
+ put_user_pages_dirty_lock(&page, 1);
+ else
+ put_user_page(page);
Can we get a put_user_page_dirty(struct page 8*pages, bool dirty, npages) ?
It is a common pattern that we might have to conditionaly dirty the pages
and i feel it would look cleaner if we could move the branch within the
put_user_page*() function.
This sounds reasonable to me, do others have a preference on this? Last time
we discussed it, I recall there was interest in trying to handle the sg lists,
which was where a lot of focus was. I'm not sure if there was a preference one
way or the other, on adding more of these helpers.
thanks,
--
John Hubbard
NVIDIA
