Re: linux-next: build warning after merge of the akpm-current tree

From: Minchan Kim
Date: Mon May 07 2018 - 10:10:52 EST


On Fri, May 04, 2018 at 08:39:43AM -0700, Randy Dunlap wrote:
> On 05/03/2018 09:17 PM, Stephen Rothwell wrote:
> > Hi Andrew,
> >
> > After merging the akpm-current tree, today's linux-next build
> > (x86_64_allmodconfig) produced this warning:
> >
> > drivers/block/zram/zram_drv.c: In function 'read_block_state':
> > drivers/block/zram/zram_drv.c:674:16: warning: format '%llu' expects argument of type 'long long unsigned int', but argument 5 has type '__kernel_time_t {aka long int}' [-Wformat=]
> > "%12lu %12llu.%06lu %c%c%c\n",
> > ~~~~~^
> > %12lu
> > (unsigned long)index, ts.tv_sec,
> > ~~~~~~~~~
> >
> > Introduced by commit
> >
> > 827c7dbda8eb ("zram-introduce-zram-memory-tracking-update-fix-fix")
> >
>
> typedef __s64 time64_t;
>
> struct timespec64 {
> time64_t tv_sec; /* seconds */
> long tv_nsec; /* nanoseconds */
> };
>
> time64_t is signed. Also, %lu on i386 et al is for 32-bit longs.
> I guess that "we" will need to cast ts.tv_sec to (s64) and use %lld to print it
> in order to satisfy other $arch.
>
> Andrew, want to add a fix-fix-fix patch?

Thanks for the fix during I am absent, Andrew and Randy.
Here goes fix.
Andrew please fold this patchset.