On Mon, Feb 29, 2016 at 1:33 AM, Arnd Bergmann <arnd@xxxxxxxx> 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 <arnd@xxxxxxxx> Acked-by: Dan Williams <dan.j.williams@xxxxxxxxx> Vinod, will you take this one? -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx"> email@xxxxxxxxx </a>