On Fri, 2017-05-26 at 12:43 +1000, Stephen Rothwell wrote:
> Hi Andrew,
>
> After merging the akpm-current tree, today's linux-next build (powerpc
> ppc64_defconfig) produced this warning:
>
> fs/jfs/jfs_metapage.c: In function 'force_metapage':
> fs/jfs/jfs_metapage.c:714:2: warning: ignoring return value of 'write_one_page', declared with attribute warn_unused_result [-Wunused-result]
> write_one_page(page);
> ^
> fs/jfs/jfs_metapage.c: In function 'release_metapage':
> fs/jfs/jfs_metapage.c:759:4: warning: ignoring return value of 'write_one_page', declared with attribute warn_unused_result [-Wunused-result]
> write_one_page(page);
> ^
>
> Introduced by commit
>
> f8652aebee02 ("mm: drop "wait" parameter from write_one_page()")
>
> These call sites were updated for the droppping of the argument, but
> not for the addition of __must_check :-(
>
(cc'ing Dave...)
Yeah, that's a known issue. When Willy reviewed the patch originally he
asked me to add a __must_check there so that JFS would pick up some
warnings for this.
JFS really ought to check the return code there and do something sane
with it. Dave?
--
Jeff Layton <jlayton@xxxxxxxxxx>
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