On Thu, Aug 17, 2023 at 11:05:22PM -0700, Chris Li wrote: > In this patch series I want to safeguard > the free_pcppage_bulk against change in the > pcp->count outside of this function. e.g. > by BPF program inject on the function tracepoint. > > I break up the patches into two seperate patches > for the safeguard and clean up. > > Hopefully that is easier to review. > > Signed-off-by: Chris Li <chrisl@xxxxxxxxxx> This sounds like a maintenance nightmare if internal state can be arbitrary modified by a BPF program and still expected to work properly in all cases. Every review would have to take into account "what if a BPF script modifies state behind our back?" -- Mel Gorman SUSE Labs
