On 5/23/19 3:50 PM, John Hubbard wrote: > [...] > I was thinking of it as a temporary measure, only up until, but not including the > point where put_user_pages() becomes active. That is, the point when put_user_pages > starts decrementing GUP_PIN_COUNTING_BIAS, instead of just forwarding to put_page(). > > (For other readers, that's this patch: > > "mm/gup: debug tracking of get_user_pages() references" > > ...in https://github.com/johnhubbard/linux/tree/gup_dma_core ) > Arggh, correction, I meant this patch: "mm/gup: track gup-pinned pages" ...sorry for any confusion there. thanks, -- John Hubbard NVIDIA