> On Dec 17, 2019, at 7:50 PM, Wei Yang <richardw.yang@xxxxxxxxxxxxxxx> wrote: > > Took a look into the history. This function is introduced in > > commit 'ca79b0c211af' (mm: convert totalram_pages and totalhigh_pages > variables to atomic) > > Even in this commit, no one use this function. It occurs to me that function was a part of API design as a placeholder which might be used in the future.