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Subject[PATCH v2] mm: Change return type to vm_fault_t
Use new return type vm_fault_t for fault handler
in struct vm_operations_struct. For now, this is
just documenting that the function returns a
VM_FAULT value rather than an errno. Once all
instances are converted, vm_fault_t will become
a distinct type.

commit 1c8f422059ae ("mm: change return type to
vm_fault_t")

Signed-off-by: Souptick Joarder <jrdr.linux@gmail.com>
Reviewed-by: Matthew Wilcox <mawilcox@microsoft.com>
---
v2: Updated the change log

mm/hugetlb.c | 2 +-
mm/mmap.c | 4 ++--
2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/mm/hugetlb.c b/mm/hugetlb.c
index 7c204e3..acb432a 100644
--- a/mm/hugetlb.c
+++ b/mm/hugetlb.c
@@ -3158,7 +3158,7 @@ static int hugetlb_vm_op_split(struct vm_area_struct *vma, unsigned long addr)
* hugegpage VMA. do_page_fault() is supposed to trap this, so BUG is we get
* this far.
*/
-static int hugetlb_vm_op_fault(struct vm_fault *vmf)
+static vm_fault_t hugetlb_vm_op_fault(struct vm_fault *vmf)
{
BUG();
return 0;
diff --git a/mm/mmap.c b/mm/mmap.c
index 9efdc021..ac41b34 100644
--- a/mm/mmap.c
+++ b/mm/mmap.c
@@ -3208,7 +3208,7 @@ void vm_stat_account(struct mm_struct *mm, vm_flags_t flags, long npages)
mm->data_vm += npages;
}

-static int special_mapping_fault(struct vm_fault *vmf);
+static vm_fault_t special_mapping_fault(struct vm_fault *vmf);

/*
* Having a close hook prevents vma merging regardless of flags.
@@ -3247,7 +3247,7 @@ static int special_mapping_mremap(struct vm_area_struct *new_vma)
.fault = special_mapping_fault,
};

-static int special_mapping_fault(struct vm_fault *vmf)
+static vm_fault_t special_mapping_fault(struct vm_fault *vmf)
{
struct vm_area_struct *vma = vmf->vma;
pgoff_t pgoff;
--
1.9.1
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