[PATCH rdma-next 1/4] RDMA/cxgb4: use kmalloc() for the PBL address array

[Leon Romanovsky]

From: Leon Romanovsky <leonro@xxxxxxxxxx>

c4iw_reg_user_mr() allocates a page-sized temporary array of DMA
addresses while programming a PBL. The array has no page-specific
requirements, so allocate it with kmalloc() and release it with kfree().

This avoids the casts required by the page allocator and lets the free
operation derive the allocation size from the object.

Signed-off-by: Leon Romanovsky <leonro@xxxxxxxxxx>
---
 drivers/infiniband/hw/cxgb4/mem.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/infiniband/hw/cxgb4/mem.c b/drivers/infiniband/hw/cxgb4/mem.c
index cd1b01014198..49498c75f38f 100644
--- a/drivers/infiniband/hw/cxgb4/mem.c
+++ b/drivers/infiniband/hw/cxgb4/mem.c
@@ -541,7 +541,7 @@ struct ib_mr *c4iw_reg_user_mr(struct ib_pd *pd, u64 start, u64 length,
 	if (err)
 		goto err_umem_release;
 
-	pages = (__be64 *) __get_free_page(GFP_KERNEL);
+	pages = kmalloc(PAGE_SIZE, GFP_KERNEL);
 	if (!pages) {
 		err = -ENOMEM;
 		goto err_pbl_free;
@@ -568,7 +568,7 @@ struct ib_mr *c4iw_reg_user_mr(struct ib_pd *pd, u64 start, u64 length,
 				mhp->wr_waitp);
 
 pbl_done:
-	free_page((unsigned long) pages);
+	kfree(pages);
 	if (err)
 		goto err_pbl_free;
 

-- 
2.55.0