mm/hmm: convert to use vm_fault_t
Convert to use vm_fault_t type as return type for fault handler.
kbuild reported warning during testing of
*mm-create-the-new-vm_fault_t-type.patch* available in below link -
https://patchwork.kernel.org/patch/10752741/
kernel/memremap.c:46:34: warning: incorrect type in return expression
(different base types)
kernel/memremap.c:46:34: expected restricted vm_fault_t
kernel/memremap.c:46:34: got int
This patch has fixed the warnings and also hmm_devmem_fault() is
converted to return vm_fault_t to avoid further warnings.
[sfr@canb.auug.org.au: drm/nouveau/dmem: update for struct hmm_devmem_ops member change]
Link: http://lkml.kernel.org/r/20190220174407.753d94e5@canb.auug.org.au
Link: http://lkml.kernel.org/r/20190110145900.GA1317@jordon-HP-15-Notebook-PC
Signed-off-by: Souptick Joarder <jrdr.linux@gmail.com>
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Reviewed-by: Jérôme Glisse <jglisse@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/mm/hmm.c b/mm/hmm.c
index a04e4b8..fe1cd87 100644
--- a/mm/hmm.c
+++ b/mm/hmm.c
@@ -990,7 +990,7 @@ static void hmm_devmem_ref_kill(struct percpu_ref *ref)
percpu_ref_kill(ref);
}
-static int hmm_devmem_fault(struct vm_area_struct *vma,
+static vm_fault_t hmm_devmem_fault(struct vm_area_struct *vma,
unsigned long addr,
const struct page *page,
unsigned int flags,