linux-kernel - linux-next: build warning from Linus' tree

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Date:   Mon, 27 Feb 2017 10:23:01 +1100
From:   Stephen Rothwell <sfr@...b.auug.org.au>
To:     Linus Torvalds <torvalds@...ux-foundation.org>
Cc:     linux-next@...r.kernel.org, linux-kernel@...r.kernel.org,
        Dave Jiang <dave.jiang@...el.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Matthew Wilcox <mawilcox@...rosoft.com>,
        Ross Zwisler <ross.zwisler@...ux.intel.com>
Subject: linux-next: build warning from Linus' tree

Hi all,

With just Linus' tree, today's linux-next build (powerpc ppc64_defconfig)
produced this warning:

fs/dax.c: In function 'dax_iomap_fault':
fs/dax.c:1462:35: warning: passing argument 2 of 'dax_iomap_pmd_fault' discards 'const' qualifier from pointer target type [-Wdiscarded-qualifiers]
   return dax_iomap_pmd_fault(vmf, ops);
                                   ^
fs/dax.c:1439:12: note: expected 'struct iomap_ops *' but argument is of type 'const struct iomap_ops *'
 static int dax_iomap_pmd_fault(struct vm_fault *vmf, struct iomap_ops *ops)
            ^

Introduced by commit

  a2d581675d48 ("mm,fs,dax: change ->pmd_fault to ->huge_fault")

which missed fixing up the !CONFIG_FS_DAX_PMD case.

-- 
Cheers,
Stephen Rothwell