mm: convert return type of handle_mm_fault() caller to vm_fault_t

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.

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

In this patch all the caller of handle_mm_fault() are changed to return
vm_fault_t type.

Link: http://lkml.kernel.org/r/20180617084810.GA6730@jordon-HP-15-Notebook-PC
Signed-off-by: Souptick Joarder <[email protected]>
Cc: Matthew Wilcox <[email protected]>
Cc: Richard Henderson <[email protected]>
Cc: Tony Luck <[email protected]>
Cc: Matt Turner <[email protected]>
Cc: Vineet Gupta <[email protected]>
Cc: Russell King <[email protected]>
Cc: Catalin Marinas <[email protected]>
Cc: Will Deacon <[email protected]>
Cc: Richard Kuo <[email protected]>
Cc: Geert Uytterhoeven <[email protected]>
Cc: Michal Simek <[email protected]>
Cc: James Hogan <[email protected]>
Cc: Ley Foon Tan <[email protected]>
Cc: Jonas Bonn <[email protected]>
Cc: James E.J. Bottomley <[email protected]>
Cc: Benjamin Herrenschmidt <[email protected]>
Cc: Palmer Dabbelt <[email protected]>
Cc: Yoshinori Sato <[email protected]>
Cc: David S. Miller <[email protected]>
Cc: Richard Weinberger <[email protected]>
Cc: Guan Xuetao <[email protected]>
Cc: Thomas Gleixner <[email protected]>
Cc: "H. Peter Anvin" <[email protected]>
Cc: "Levin, Alexander (Sasha Levin)" <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>

1 files changed, 4 insertions, 3 deletions

diff --git a/arch/powerpc/mm/fault.c b/arch/powerpc/mm/fault.c
index b1ca7a0974e3..7c061313cc6f 100644
--- a/arch/powerpc/mm/fault.c
+++ b/arch/powerpc/mm/fault.c
@@ -156,7 +156,7 @@ static noinline int bad_access(struct pt_regs *regs, unsigned long address)
 }
 
 static int do_sigbus(struct pt_regs *regs, unsigned long address,
-		     unsigned int fault)
+		     vm_fault_t fault)
 {
 	siginfo_t info;
 	unsigned int lsb = 0;
@@ -187,7 +187,8 @@ static int do_sigbus(struct pt_regs *regs, unsigned long address,
 	return 0;
 }
 
-static int mm_fault_error(struct pt_regs *regs, unsigned long addr, int fault)
+static int mm_fault_error(struct pt_regs *regs, unsigned long addr,
+				vm_fault_t fault)
 {
 	/*
 	 * Kernel page fault interrupted by SIGKILL. We have no reason to
@@ -415,7 +416,7 @@ static int __do_page_fault(struct pt_regs *regs, unsigned long address,
  	int is_exec = TRAP(regs) == 0x400;
 	int is_user = user_mode(regs);
 	int is_write = page_fault_is_write(error_code);
-	int fault, major = 0;
+	vm_fault_t fault, major = 0;
 	bool must_retry = false;
 
 	if (notify_page_fault(regs))