[PATCH v2] misc: sgi-gru: Change return type to vm_fault_t

From: Souptick Joarder
Date: Wed Apr 25 2018 - 00:48:59 EST

Use new return type vm_fault_t for fault handler. 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@xxxxxxxxx>
Reviewed-by: Matthew Wilcox <mawilcox@xxxxxxxxxxxxx>
v2: Updated the change log

drivers/misc/sgi-gru/grumain.c | 2 +-
drivers/misc/sgi-gru/grutables.h | 3 ++-
2 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/misc/sgi-gru/grumain.c b/drivers/misc/sgi-gru/grumain.c
index 3641f13..ab174f28 100644
--- a/drivers/misc/sgi-gru/grumain.c
+++ b/drivers/misc/sgi-gru/grumain.c
@@ -926,7 +926,7 @@ struct gru_state *gru_assign_gru_context(struct gru_thread_state *gts)
* Note: gru segments alway mmaped on GRU_GSEG_PAGESIZE boundaries.
-int gru_fault(struct vm_fault *vmf)
+vm_fault_t gru_fault(struct vm_fault *vmf)
struct vm_area_struct *vma = vmf->vma;
struct gru_thread_state *gts;
diff --git a/drivers/misc/sgi-gru/grutables.h b/drivers/misc/sgi-gru/grutables.h
index b5e308b..3e041b6 100644
--- a/drivers/misc/sgi-gru/grutables.h
+++ b/drivers/misc/sgi-gru/grutables.h
@@ -147,6 +147,7 @@
#include <linux/mutex.h>
#include <linux/wait.h>
#include <linux/mmu_notifier.h>
+#include <linux/mm_types.h>
#include "gru.h"
#include "grulib.h"
#include "gruhandles.h"
@@ -665,7 +666,7 @@ extern unsigned long gru_reserve_cb_resources(struct gru_state *gru,
int cbr_au_count, char *cbmap);
extern unsigned long gru_reserve_ds_resources(struct gru_state *gru,
int dsr_au_count, char *dsmap);
-extern int gru_fault(struct vm_fault *vmf);
+extern vm_fault_t gru_fault(struct vm_fault *vmf);
extern struct gru_mm_struct *gru_register_mmu_notifier(void);
extern void gru_drop_mmu_notifier(struct gru_mm_struct *gms);