[PATCH rdma-next 3/4] RDMA/usnic: use kmalloc() for the page pointer array

[Leon Romanovsky]

From: Leon Romanovsky <leonro@xxxxxxxxxx>

usnic_uiom_get_pages() uses a page-sized array of struct page pointers
as temporary storage for pin_user_pages(). Nothing requires the array to
come directly from the page allocator.

Use kmalloc() for the array and kfree() after the pinning loop.

Signed-off-by: Leon Romanovsky <leonro@xxxxxxxxxx>
---
 drivers/infiniband/hw/usnic/usnic_uiom.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/infiniband/hw/usnic/usnic_uiom.c b/drivers/infiniband/hw/usnic/usnic_uiom.c
index 691c64a73516..201c35039a74 100644
--- a/drivers/infiniband/hw/usnic/usnic_uiom.c
+++ b/drivers/infiniband/hw/usnic/usnic_uiom.c
@@ -114,7 +114,7 @@ static int usnic_uiom_get_pages(unsigned long addr, size_t size, int writable,
 
 	INIT_LIST_HEAD(chunk_list);
 
-	page_list = (struct page **) __get_free_page(GFP_KERNEL);
+	page_list = kmalloc(PAGE_SIZE, GFP_KERNEL);
 	if (!page_list)
 		return -ENOMEM;
 
@@ -182,7 +182,7 @@ static int usnic_uiom_get_pages(unsigned long addr, size_t size, int writable,
 		mmgrab(uiomr->owning_mm);
 
 	mmap_read_unlock(mm);
-	free_page((unsigned long) page_list);
+	kfree(page_list);
 	return ret;
 }
 

-- 
2.55.0