RDMA: use dma_resv_wait() instead of extracting the fence

Use dma_resv_wait() instead of extracting the exclusive fence and
waiting on it manually.

Signed-off-by: Christian König <[email protected]>
Reviewed-by: Daniel Vetter <[email protected]>
Acked-by: Jason Gunthorpe <[email protected]>
Cc: Jason Gunthorpe <[email protected]>
Cc: Leon Romanovsky <[email protected]>
Cc: Maor Gottlieb <[email protected]>
Cc: Gal Pressman <[email protected]>
Cc: [email protected]
Cc: [email protected]
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]

Author: ChristianKoenigAMD

drivers/infiniband/core/umem_dmabuf.c

@@ -16,7 +16,6 @@ int ib_umem_dmabuf_map_pages(struct ib_umem_dmabuf *umem_dmabuf)
 {
 	struct sg_table *sgt;
 	struct scatterlist *sg;
-	struct dma_fence *fence;
 	unsigned long start, end, cur = 0;
 	unsigned int nmap = 0;
 	int i;
@@ -68,11 +67,8 @@ int ib_umem_dmabuf_map_pages(struct ib_umem_dmabuf *umem_dmabuf)
 	 * may be not up-to-date. Wait for the exporter to finish
 	 * the migration.
 	 */
-	fence = dma_resv_excl_fence(umem_dmabuf->attach->dmabuf->resv);
-	if (fence)
-		return dma_fence_wait(fence, false);
-
-	return 0;
+	return dma_resv_wait_timeout(umem_dmabuf->attach->dmabuf->resv, false,
+				     false, MAX_SCHEDULE_TIMEOUT);
 }
 EXPORT_SYMBOL(ib_umem_dmabuf_map_pages);