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Date:   Mon, 27 Feb 2017 10:23:01 +1100
From:   Stephen Rothwell <>
To:     Linus Torvalds <>
        Dave Jiang <>,
        Andrew Morton <>,
        Matthew Wilcox <>,
        Ross Zwisler <>
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.

Stephen Rothwell

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