From 6af255a94f2aaab4dcf8642d28cdc6b37ff2ddd8 Mon Sep 17 00:00:00 2001 From: Christophe JAILLET Date: Tue, 14 Jul 2026 10:47:32 +0200 Subject: RDMA/umem: Constify struct dma_buf_attach_ops 'struct dma_buf_attach_ops' are not modified in this driver. Constifying these structures moves some data to a read-only section, so increases overall security, especially when the structure holds some function pointers. On a x86_64, with allmodconfig, as an example: Before: ====== text data bss dec hex filename 10300 1216 0 11516 2cfc drivers/infiniband/core/umem_dmabuf.o After: ===== text data bss dec hex filename 10428 1088 0 11516 2cfc drivers/infiniband/core/umem_dmabuf.o Signed-off-by: Christophe JAILLET Link: https://patch.msgid.link/3ca4ace543a02ccfdcce1ba568895c994aad7abb.1784018825.git.christophe.jaillet@wanadoo.fr Signed-off-by: Leon Romanovsky --- drivers/infiniband/core/umem_dmabuf.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/infiniband/core/umem_dmabuf.c b/drivers/infiniband/core/umem_dmabuf.c index ad023c2d84d8..39b5564a4c35 100644 --- a/drivers/infiniband/core/umem_dmabuf.c +++ b/drivers/infiniband/core/umem_dmabuf.c @@ -181,7 +181,7 @@ struct ib_umem_dmabuf *ib_umem_dmabuf_get(struct ib_device *device, } EXPORT_SYMBOL(ib_umem_dmabuf_get); -static struct dma_buf_attach_ops ib_umem_dmabuf_attach_pinned_ops = { +static const struct dma_buf_attach_ops ib_umem_dmabuf_attach_pinned_ops = { .allow_peer2peer = true, }; @@ -205,7 +205,7 @@ static void ib_umem_dmabuf_revoke_locked(struct dma_buf_attachment *attach) umem_dmabuf->revoked = 1; } -static struct dma_buf_attach_ops ib_umem_dmabuf_attach_pinned_revocable_ops = { +static const struct dma_buf_attach_ops ib_umem_dmabuf_attach_pinned_revocable_ops = { .allow_peer2peer = true, .invalidate_mappings = ib_umem_dmabuf_revoke_locked, }; -- cgit v1.2.3