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authorSouptick Joarder <jrdr.linux@gmail.com>2018-08-17 15:44:47 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2018-08-17 16:20:28 -0700
commit50a7ca3c6fc86955f99fc432fc8a186b968b365b (patch)
tree7918bfb3ef8558bfadbc362d0f1bae79bb20d729 /arch/s390/mm/fault.c
parent0882ff9190e3bc51e2d78c3aadd7c690eeaa91d5 (diff)
downloadlinux-50a7ca3c6fc86955f99fc432fc8a186b968b365b.tar.bz2
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 <jrdr.linux@gmail.com> Cc: Matthew Wilcox <willy@infradead.org> Cc: Richard Henderson <rth@twiddle.net> Cc: Tony Luck <tony.luck@intel.com> Cc: Matt Turner <mattst88@gmail.com> Cc: Vineet Gupta <vgupta@synopsys.com> Cc: Russell King <linux@armlinux.org.uk> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Will Deacon <will.deacon@arm.com> Cc: Richard Kuo <rkuo@codeaurora.org> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Michal Simek <monstr@monstr.eu> Cc: James Hogan <jhogan@kernel.org> Cc: Ley Foon Tan <lftan@altera.com> Cc: Jonas Bonn <jonas@southpole.se> Cc: James E.J. Bottomley <jejb@parisc-linux.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Palmer Dabbelt <palmer@sifive.com> Cc: Yoshinori Sato <ysato@users.sourceforge.jp> Cc: David S. Miller <davem@davemloft.net> Cc: Richard Weinberger <richard@nod.at> Cc: Guan Xuetao <gxt@pku.edu.cn> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: "Levin, Alexander (Sasha Levin)" <alexander.levin@verizon.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/s390/mm/fault.c')
-rw-r--r--arch/s390/mm/fault.c13
1 files changed, 8 insertions, 5 deletions
diff --git a/arch/s390/mm/fault.c b/arch/s390/mm/fault.c
index 4cc3f06b0ab3..72af23bacbb5 100644
--- a/arch/s390/mm/fault.c
+++ b/arch/s390/mm/fault.c
@@ -341,7 +341,8 @@ static noinline int signal_return(struct pt_regs *regs)
return -EACCES;
}
-static noinline void do_fault_error(struct pt_regs *regs, int access, int fault)
+static noinline void do_fault_error(struct pt_regs *regs, int access,
+ vm_fault_t fault)
{
int si_code;
@@ -401,7 +402,7 @@ static noinline void do_fault_error(struct pt_regs *regs, int access, int fault)
* 11 Page translation -> Not present (nullification)
* 3b Region third trans. -> Not present (nullification)
*/
-static inline int do_exception(struct pt_regs *regs, int access)
+static inline vm_fault_t do_exception(struct pt_regs *regs, int access)
{
struct gmap *gmap;
struct task_struct *tsk;
@@ -411,7 +412,7 @@ static inline int do_exception(struct pt_regs *regs, int access)
unsigned long trans_exc_code;
unsigned long address;
unsigned int flags;
- int fault;
+ vm_fault_t fault;
tsk = current;
/*
@@ -564,7 +565,8 @@ out:
void do_protection_exception(struct pt_regs *regs)
{
unsigned long trans_exc_code;
- int access, fault;
+ int access;
+ vm_fault_t fault;
trans_exc_code = regs->int_parm_long;
/*
@@ -599,7 +601,8 @@ NOKPROBE_SYMBOL(do_protection_exception);
void do_dat_exception(struct pt_regs *regs)
{
- int access, fault;
+ int access;
+ vm_fault_t fault;
access = VM_READ | VM_EXEC | VM_WRITE;
fault = do_exception(regs, access);