On Fri, Jan 17, 2020 at 05:38:10PM -0800, Mike Kravetz wrote: >On 1/17/20 3:48 PM, Wei Yang wrote: >> This is another point I think current code is not working well. And actually, >> the behavior is not well defined or our kernel is broken for a while. >> >> When you look at the man page, it says: >> >> RETURN VALUE >> On success move_pages() returns zero. On error, it returns -1, and sets errno to indicate the error >> > >Is this from your migrate_pages(2) man page? > It is from my move_pages(2) man page. >The latest version of the migrate_pages(2) man page in the git repo has this >for RETURN VALUE. > >RETURN VALUE > On success migrate_pages() returns the number of pages that could not > be moved (i.e., a return of zero means that all pages were successfully > moved). On error, it returns -1, and sets errno to indicate the error. > >-- >Mike Kravetz -- Wei Yang Help you, Help me
