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mm,fs,dax: mark dax_iomap_pmd_fault as const 

The two alternative implementations of dax_iomap_fault have different
prototypes, and one of them is obviously wrong as seen from this build
warning:

  fs/dax.c: In function 'dax_iomap_fault':
  fs/dax.c:1462:35: error: passing argument 2 of 'dax_iomap_pmd_fault' discards 'const' qualifier from pointer target type [-Werror=discarded-qualifiers]

This marks the argument 'const' as in all the related functions.

Fixes: a2d581675d ("mm,fs,dax: change ->pmd_fault to ->huge_fault")
Link: http://lkml.kernel.org/r/20170227203349.3318733-1-arnd@arndb.de
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Arnd Bergmann 2017-02-27 14:26:44 -08:00 committed by Linus Torvalds
parent e5d56efc97
commit 01cddfe990
1 changed files with 2 additions and 1 deletions
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3
fs/dax.c
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@ -1436,7 +1436,8 @@ static int dax_iomap_pmd_fault(struct vm_fault *vmf,
return result;
}
#else
static int dax_iomap_pmd_fault(struct vm_fault *vmf, struct iomap_ops *ops)
static int dax_iomap_pmd_fault(struct vm_fault *vmf,
const struct iomap_ops *ops)
{
return VM_FAULT_FALLBACK;
}