[SG] Update drivers to use sg helpers

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>

1 files changed, 15 insertions, 9 deletions

diff --git a/drivers/infiniband/hw/mthca/mthca_memfree.c b/drivers/infiniband/hw/mthca/mthca_memfree.c
index e61f3e626980..007b38157fc4 100644
--- a/drivers/infiniband/hw/mthca/mthca_memfree.c
+++ b/drivers/infiniband/hw/mthca/mthca_memfree.c
@@ -71,7 +71,7 @@ static void mthca_free_icm_pages(struct mthca_dev *dev, struct mthca_icm_chunk *
                              PCI_DMA_BIDIRECTIONAL);
 
         for (i = 0; i < chunk->npages; ++i)
-                __free_pages(chunk->mem[i].page,
+                __free_pages(sg_page(&chunk->mem[i]),
                              get_order(chunk->mem[i].length));
 }
 
@@ -81,7 +81,7 @@ static void mthca_free_icm_coherent(struct mthca_dev *dev, struct mthca_icm_chun
 
         for (i = 0; i < chunk->npages; ++i) {
                 dma_free_coherent(&dev->pdev->dev, chunk->mem[i].length,
-                                  lowmem_page_address(chunk->mem[i].page),
+                                  lowmem_page_address(sg_page(&chunk->mem[i])),
                                   sg_dma_address(&chunk->mem[i]));
         }
 }
@@ -107,10 +107,13 @@ void mthca_free_icm(struct mthca_dev *dev, struct mthca_icm *icm, int coherent)
 
 static int mthca_alloc_icm_pages(struct scatterlist *mem, int order, gfp_t gfp_mask)
 {
-        mem->page = alloc_pages(gfp_mask, order);
-        if (!mem->page)
+        struct page *page;
+
+        page = alloc_pages(gfp_mask, order);
+        if (!page)
                 return -ENOMEM;
 
+        sg_set_page(mem, page);
         mem->length = PAGE_SIZE << order;
         mem->offset = 0;
         return 0;
@@ -157,6 +160,7 @@ struct mthca_icm *mthca_alloc_icm(struct mthca_dev *dev, int npages,
                         if (!chunk)
                                 goto fail;
 
+                        sg_init_table(chunk->mem, MTHCA_ICM_CHUNK_LEN);
                         chunk->npages = 0;
                         chunk->nsg    = 0;
                         list_add_tail(&chunk->list, &icm->chunk_list);
@@ -304,7 +308,7 @@ void *mthca_table_find(struct mthca_icm_table *table, int obj, dma_addr_t *dma_h
                          * so if we found the page, dma_handle has already
                          * been assigned to. */
                         if (chunk->mem[i].length > offset) {
-                                page = chunk->mem[i].page;
+                                page = sg_page(&chunk->mem[i]);
                                 goto out;
                         }
                         offset -= chunk->mem[i].length;
@@ -445,6 +449,7 @@ static u64 mthca_uarc_virt(struct mthca_dev *dev, struct mthca_uar *uar, int pag
 int mthca_map_user_db(struct mthca_dev *dev, struct mthca_uar *uar,
                       struct mthca_user_db_table *db_tab, int index, u64 uaddr)
 {
+        struct page *pages[1];
         int ret = 0;
         u8 status;
         int i;
@@ -472,16 +477,17 @@ int mthca_map_user_db(struct mthca_dev *dev, struct mthca_uar *uar,
         }
 
         ret = get_user_pages(current, current->mm, uaddr & PAGE_MASK, 1, 1, 0,
-                             &db_tab->page[i].mem.page, NULL);
+                             pages, NULL);
         if (ret < 0)
                 goto out;
 
+        sg_set_page(&db_tab->page[i].mem, pages[0]);
         db_tab->page[i].mem.length = MTHCA_ICM_PAGE_SIZE;
         db_tab->page[i].mem.offset = uaddr & ~PAGE_MASK;
 
         ret = pci_map_sg(dev->pdev, &db_tab->page[i].mem, 1, PCI_DMA_TODEVICE);
         if (ret < 0) {
-                put_page(db_tab->page[i].mem.page);
+                put_page(pages[0]);
                 goto out;
         }
 
@@ -491,7 +497,7 @@ int mthca_map_user_db(struct mthca_dev *dev, struct mthca_uar *uar,
                 ret = -EINVAL;
         if (ret) {
                 pci_unmap_sg(dev->pdev, &db_tab->page[i].mem, 1, PCI_DMA_TODEVICE);
-                put_page(db_tab->page[i].mem.page);
+                put_page(sg_page(&db_tab->page[i].mem));
                 goto out;
         }
 
@@ -557,7 +563,7 @@ void mthca_cleanup_user_db_tab(struct mthca_dev *dev, struct mthca_uar *uar,
                 if (db_tab->page[i].uvirt) {
                         mthca_UNMAP_ICM(dev, mthca_uarc_virt(dev, uar, i), 1, &status);
                         pci_unmap_sg(dev->pdev, &db_tab->page[i].mem, 1, PCI_DMA_TODEVICE);
-                        put_page(db_tab->page[i].mem.page);
+                        put_page(sg_page(&db_tab->page[i].mem));
                 }
         }