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

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Date:   Fri, 26 May 2017 12:43:24 +1000
From:   Stephen Rothwell <sfr@...b.auug.org.au>
To:     Andrew Morton <akpm@...ux-foundation.org>
Cc:     Linux-Next Mailing List <linux-next@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Jeff Layton <jlayton@...hat.com>,
        Ross Zwisler <ross.zwisler@...ux.intel.com>,
        Jan Kara <jack@...e.cz>,
        Matthew Wilcox <mawilcox@...rosoft.com>,
        Christoph Hellwig <hch@....de>
Subject: linux-next: build warning after merge of the akpm-current tree

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 :-(

-- 
Cheers,
Stephen Rothwell