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path: root/drivers/infiniband/core/umem.c
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Diffstat (limited to 'drivers/infiniband/core/umem.c')
-rw-r--r--drivers/infiniband/core/umem.c6
1 files changed, 5 insertions, 1 deletions
diff --git a/drivers/infiniband/core/umem.c b/drivers/infiniband/core/umem.c
index c68746ce6624..224ad274ea0b 100644
--- a/drivers/infiniband/core/umem.c
+++ b/drivers/infiniband/core/umem.c
@@ -94,6 +94,7 @@ struct ib_umem *ib_umem_get(struct ib_ucontext *context, unsigned long addr,
94 unsigned long dma_attrs = 0; 94 unsigned long dma_attrs = 0;
95 struct scatterlist *sg, *sg_list_start; 95 struct scatterlist *sg, *sg_list_start;
96 int need_release = 0; 96 int need_release = 0;
97 unsigned int gup_flags = FOLL_WRITE;
97 98
98 if (dmasync) 99 if (dmasync)
99 dma_attrs |= DMA_ATTR_WRITE_BARRIER; 100 dma_attrs |= DMA_ATTR_WRITE_BARRIER;
@@ -183,6 +184,9 @@ struct ib_umem *ib_umem_get(struct ib_ucontext *context, unsigned long addr,
183 if (ret) 184 if (ret)
184 goto out; 185 goto out;
185 186
187 if (!umem->writable)
188 gup_flags |= FOLL_FORCE;
189
186 need_release = 1; 190 need_release = 1;
187 sg_list_start = umem->sg_head.sgl; 191 sg_list_start = umem->sg_head.sgl;
188 192
@@ -190,7 +194,7 @@ struct ib_umem *ib_umem_get(struct ib_ucontext *context, unsigned long addr,
190 ret = get_user_pages(cur_base, 194 ret = get_user_pages(cur_base,
191 min_t(unsigned long, npages, 195 min_t(unsigned long, npages,
192 PAGE_SIZE / sizeof (struct page *)), 196 PAGE_SIZE / sizeof (struct page *)),
193 1, !umem->writable, page_list, vma_list); 197 gup_flags, page_list, vma_list);
194 198
195 if (ret < 0) 199 if (ret < 0)
196 goto out; 200 goto out;