Stephen reported:
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.
Reported-by: Stephen Rothwell <sfr@xxxxxxxxxxxxxxxx>
Signed-off-by: Dave Jiang <dave.jiang@xxxxxxxxx>
---
fs/dax.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/fs/dax.c b/fs/dax.c
index 5ae8b71..7436c98 100644
--- a/fs/dax.c
+++ b/fs/dax.c
@@ -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;
}
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