ggml : add TODO tag for shared buffer split logic

Assisted-by: pi:llama.cpp/DeepSeek-V4-Flash-Vision-Exp

ggml/src/ggml-alloc.c

@@ -1145,6 +1145,7 @@ ggml_backend_buffer_t ggml_backend_alloc_ctx_tensors_from_buft(struct ggml_conte
     return ggml_backend_alloc_ctx_tensors_from_buft_impl(ctx, buft);
 }
 
+// TODO [TAG_ALLOC_SAHRED_BUFFER_SPLIT]: reuse shared buffer-splitting logic from ggml_backend_buft_alloc_buffer_n_default
 size_t ggml_backend_alloc_ctx_tensors_from_buft_size(struct ggml_context * ctx, ggml_backend_buffer_type_t buft) {
     GGML_ASSERT(ggml_get_no_alloc(ctx) == true);
 

ggml/src/ggml-backend.cpp

@@ -45,6 +45,7 @@ ggml_backend_buffer_t ggml_backend_buft_alloc_buffer(ggml_backend_buffer_type_t
     return buft->iface.alloc_buffer(buft, size);
 }
 
+// TODO [TAG_ALLOC_SAHRED_BUFFER_SPLIT]: extract shared buffer-splitting logic with ggml_backend_alloc_ctx_tensors_from_buft_size
 // default implementation of alloc_buffer_n
 // allocates tensors from a list into one or more buffers of the given type
 static ggml_backend_buffer_t ggml_backend_buft_alloc_buffer_n_default(ggml_backend_buffer_type_t buft, struct ggml_tensor ** tensors, int n_tensors) {