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In commit9ce4aef9a5("drm/gpuvm: take GEM lock inside drm_gpuvm_bo_obtain_prealloc()") we update drm_gpuvm_bo_obtain_prealloc() to take locks internally, which means that it's only usable in immediate mode. In this commit, we notice that drm_gpuvm_bo_obtain() requires you to use staged mode. This means that we now have one variant of obtain for each mode you might use gpuvm in. To reflect this information, we add a warning about using it in immediate mode, and to make the distinction clearer we rename the method with a _locked() suffix so that it's clear that it requires the caller to take the locks. Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com> Signed-off-by: Alice Ryhl <aliceryhl@google.com> Link: https://patch.msgid.link/20260108-gpuvm-rust-v2-2-dbd014005a0b@google.com [ Slightly reword commit message to refer to commit9ce4aef9a5("drm/gpuvm: take GEM lock inside drm_gpuvm_bo_obtain_prealloc()"). - Danilo ] Signed-off-by: Danilo Krummrich <dakr@kernel.org>