On Tue, Mar 30, 2021 at 04:02:49PM -0700, Jian Cai wrote: > This fixes the mismatch of alignments between csd and its use as an > argument to smp_call_function_single_async, which causes build failure > when -Walign-mismatch in Clang is used. > > Link: > http://crrev.com/c/1193732 That link does not work. You probably meant http://crbug.com/1193732 You'll probably want drop the link and to copy the relevant information directly into the patch description. Generate the error with an upstream kernel and cut-and-paste the output here. For others, the observed error message is: block/blk-mq.c:622:44: error: passing 8-byte aligned argument to 32-byte aligned parameter 2 of 'smp_call_function_single_async' may result in an unaligned pointer access [-Werror,-Walign-mismatch] Thanks, Guenter > > Suggested-by: Guenter Roeck <linux@xxxxxxxxxxxx> > Signed-off-by: Jian Cai <jiancai@xxxxxxxxxx> > --- > include/linux/blkdev.h | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h > index bc6bc8383b43..3b92330d95ad 100644 > --- a/include/linux/blkdev.h > +++ b/include/linux/blkdev.h > @@ -231,7 +231,7 @@ struct request { > unsigned long deadline; > > union { > - struct __call_single_data csd; > + call_single_data_t csd; > u64 fifo_time; > }; > > -- > 2.31.0.291.g576ba9dcdaf-goog >
