On Mon, Feb 29, 2016 at 1:33 AM, Arnd Bergmann <[email protected]> wrote: > The addition of tracepoints to the page reference tracking had an > unfortunate side-effect in at least one driver that calls put_page > from its exit function, resulting in a link error: > > `.exit.text' referenced in section `__jump_table' of crypto/built-in.o: > defined in discarded section `.exit.text' of crypto/built-in.o > > From a cursory look at that this driver, it seems that it may be > doing the wrong thing here anyway, as the page gets allocated > using 'alloc_page()', and should be freed using '__free_page()' > rather than 'put_page()'. > > With this patch, I no longer get any other build errors from the > page_ref patch, so hopefully we can assume that it's always wrong > to call any of those functions from __exit code, and that no other > driver does it. > > Fixes: 0f80830dd044 ("mm/page_ref: add tracepoint to track down page > reference manipulation") > Signed-off-by: Arnd Bergmann <[email protected]>
Acked-by: Dan Williams <[email protected]> Vinod, will you take this one?
