On Wed 27-01-21 12:01:55, Christian König wrote: [...] > Some years ago I've proposed an change to improve the OOM killer to take > into account how much memory is reference through special file descriptors > like device drivers or DMA-buf. > > But that never want anywhere because of concerns that this would add to much > overhead to the OOM killer. I have to admit I do not remember such a discussion. There were many on the related topic, concerns were mostly about a proper accounting of shared resources or locking required to gain the information. I do not remember overhead as being the main concern as oom is a real cold path. Anyway, if you want to revamp those patches then feel free to CC me and we can discuss further. I do not want to hijack this thread by an unrelated topic. -- Michal Hocko SUSE Labs
