On Wed 18-05-22 07:40:30, CGEL wrote: [...] > 2. process_madvise is still a kind of madvise. processs_madvise from > another process overrides the intention of origin app code ifself that > also calls madvise, which is unrecoverable. For example, if a process "A" > which madvises just one part of VMAs (not all) as MERGEABLE run on the OS > already, meanwhile, if another process which doesn't know the information > of "A" 's MERGEABLE areas, then call process_madvise to advise all VMAs of > "A" as MERGEABLE, the original MERGEABLE information of "A" calling madivse > is erasured permanently. I do not really follow. How is this any different from an external process modifying the process wide policy via the proc or any other interface? -- Michal Hocko SUSE Labs
