It looks like a search+replace accidentally change one function pointer that
should have remained as before, as shown by this new warning:

fs/ext4/file.c:279:1: error: 'ext4_dax_huge_fault' defined but not used 
[-Werror=unused-function]

This reverts the one line of the changeset.

Fixes: 80a841811260 ("mm,fs,dax: change ->pmd_fault to ->huge_fault")
Signed-off-by: Arnd Bergmann <[email protected]>
---
 fs/ext4/file.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/ext4/file.c b/fs/ext4/file.c
index ed22d20e843c..e1a581133aa1 100644
--- a/fs/ext4/file.c
+++ b/fs/ext4/file.c
@@ -329,7 +329,7 @@ static int ext4_dax_pfn_mkwrite(struct vm_fault *vmf)
 static const struct vm_operations_struct ext4_dax_vm_ops = {
        .fault          = ext4_dax_fault,
        .huge_fault     = ext4_dax_fault,
-       .page_mkwrite   = ext4_dax_fault,
+       .page_mkwrite   = ext4_dax_huge_fault,
        .pfn_mkwrite    = ext4_dax_pfn_mkwrite,
 };
 #else
-- 
2.9.0

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