Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net

[cascardo/linux.git] / drivers / infiniband / hw / usnic / usnic_uiom.c

diff --git a/drivers/infiniband/hw/usnic/usnic_uiom.c b/drivers/infiniband/hw/usnic/usnic_uiom.c
index a0b6ebe..1ccee6e 100644 (file)
--- a/drivers/infiniband/hw/usnic/usnic_uiom.c
+++ b/drivers/infiniband/hw/usnic/usnic_uiom.c
@@ -111,6 +111,7 @@ static int usnic_uiom_get_pages(unsigned long addr, size_t size, int writable,
        int i;
        int flags;
        dma_addr_t pa;
+       unsigned int gup_flags;
 
        if (!can_do_mlock())
                return -EPERM;
@@ -135,6 +136,8 @@ static int usnic_uiom_get_pages(unsigned long addr, size_t size, int writable,
 
        flags = IOMMU_READ | IOMMU_CACHE;
        flags |= (writable) ? IOMMU_WRITE : 0;
+       gup_flags = FOLL_WRITE;
+       gup_flags |= (writable) ? 0 : FOLL_FORCE;
        cur_base = addr & PAGE_MASK;
        ret = 0;
 
@@ -142,7 +145,7 @@ static int usnic_uiom_get_pages(unsigned long addr, size_t size, int writable,
                ret = get_user_pages(cur_base,
                                        min_t(unsigned long, npages,
                                        PAGE_SIZE / sizeof(struct page *)),
-                                       1, !writable, page_list, NULL);
+                                       gup_flags, page_list, NULL);
 
                if (ret < 0)
                        goto out;