From: Souptick Joarder <jrdr.linux@xxxxxxxxx>
Subject: 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@xxxxxxxxx>
Cc: Matthew Wilcox <willy@xxxxxxxxxxxxx>
Cc: Richard Henderson <rth@xxxxxxxxxxx>
Cc: Tony Luck <tony.luck@xxxxxxxxx>
Cc: Matt Turner <mattst88@xxxxxxxxx>
Cc: Vineet Gupta <vgupta@xxxxxxxxxxxx>
Cc: Russell King <linux@xxxxxxxxxxxxxxx>
Cc: Catalin Marinas <catalin.marinas@xxxxxxx>
Cc: Will Deacon <will.deacon@xxxxxxx>
Cc: Richard Kuo <rkuo@xxxxxxxxxxxxxx>
Cc: Geert Uytterhoeven <geert@xxxxxxxxxxxxxx>
Cc: Michal Simek <monstr@xxxxxxxxx>
Cc: James Hogan <jhogan@xxxxxxxxxx>
Cc: Ley Foon Tan <lftan@xxxxxxxxxx>
Cc: Jonas Bonn <jonas@xxxxxxxxxxxx>
Cc: James E.J. Bottomley <jejb@xxxxxxxxxxxxxxxx>
Cc: Benjamin Herrenschmidt <benh@xxxxxxxxxxxxxxxxxxx>
Cc: Palmer Dabbelt <palmer@xxxxxxxxxx>
Cc: Yoshinori Sato <ysato@xxxxxxxxxxxxxxxxxxxx>
Cc: David S. Miller <davem@xxxxxxxxxxxxx>
Cc: Richard Weinberger <richard@xxxxxx>
Cc: Guan Xuetao <gxt@xxxxxxxxxx>
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Cc: "H. Peter Anvin" <hpa@xxxxxxxxx>
Cc: "Levin, Alexander (Sasha Levin)" <alexander.levin@xxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
arch/alpha/mm/fault.c | 3 ++-
arch/arc/mm/fault.c | 4 +++-
arch/arm/mm/fault.c | 7 ++++---
arch/arm64/mm/fault.c | 6 +++---
arch/hexagon/mm/vm_fault.c | 2 +-
arch/ia64/mm/fault.c | 2 +-
arch/m68k/mm/fault.c | 4 ++--
arch/microblaze/mm/fault.c | 2 +-
arch/mips/mm/fault.c | 2 +-
arch/nds32/mm/fault.c | 2 +-
arch/nios2/mm/fault.c | 2 +-
arch/openrisc/mm/fault.c | 2 +-
arch/parisc/mm/fault.c | 2 +-
arch/powerpc/include/asm/copro.h | 4 +++-
arch/powerpc/mm/copro_fault.c | 2 +-
arch/powerpc/mm/fault.c | 7 ++++---
arch/powerpc/platforms/cell/spufs/fault.c | 2 +-
arch/riscv/mm/fault.c | 3 ++-
arch/s390/mm/fault.c | 13 ++++++++-----
arch/sh/mm/fault.c | 4 ++--
arch/sparc/mm/fault_32.c | 3 ++-
arch/sparc/mm/fault_64.c | 3 ++-
arch/um/kernel/trap.c | 2 +-
arch/unicore32/mm/fault.c | 9 +++++----
arch/x86/mm/fault.c | 5 +++--
arch/xtensa/mm/fault.c | 2 +-
drivers/iommu/amd_iommu_v2.c | 2 +-
drivers/iommu/intel-svm.c | 4 +++-
drivers/misc/cxl/fault.c | 2 +-
drivers/misc/ocxl/link.c | 3 ++-
mm/hmm.c | 8 ++++----
mm/ksm.c | 2 +-
32 files changed, 69 insertions(+), 51 deletions(-)
--- a/arch/alpha/mm/fault.c~mm-convert-return-type-of-handle_mm_fault-caller-to-vm_fault_t
+++ a/arch/alpha/mm/fault.c
@@ -87,7 +87,8 @@ do_page_fault(unsigned long address, uns
struct vm_area_struct * vma;
struct mm_struct *mm = current->mm;
const struct exception_table_entry *fixup;
- int fault, si_code = SEGV_MAPERR;
+ int si_code = SEGV_MAPERR;
+ vm_fault_t fault;
unsigned int flags = FAULT_FLAG_ALLOW_RETRY | FAULT_FLAG_KILLABLE;
/* As of EV6, a load into $31/$f31 is a prefetch, and never faults
--- a/arch/arc/mm/fault.c~mm-convert-return-type-of-handle_mm_fault-caller-to-vm_fault_t
+++ a/arch/arc/mm/fault.c
@@ -15,6 +15,7 @@
#include <linux/uaccess.h>
#include <linux/kdebug.h>
#include <linux/perf_event.h>
+#include <linux/mm_types.h>
#include <asm/pgalloc.h>
#include <asm/mmu.h>
@@ -66,7 +67,8 @@ void do_page_fault(unsigned long address
struct task_struct *tsk = current;
struct mm_struct *mm = tsk->mm;
siginfo_t info;
- int fault, ret;
+ int ret;
+ vm_fault_t fault;
int write = regs->ecr_cause & ECR_C_PROTV_STORE; /* ST/EX */
unsigned int flags = FAULT_FLAG_ALLOW_RETRY | FAULT_FLAG_KILLABLE;
--- a/arch/arm64/mm/fault.c~mm-convert-return-type-of-handle_mm_fault-caller-to-vm_fault_t
+++ a/arch/arm64/mm/fault.c
@@ -379,12 +379,12 @@ static void do_bad_area(unsigned long ad
#define VM_FAULT_BADMAP 0x010000
#define VM_FAULT_BADACCESS 0x020000
-static int __do_page_fault(struct mm_struct *mm, unsigned long addr,
+static vm_fault_t __do_page_fault(struct mm_struct *mm, unsigned long addr,
unsigned int mm_flags, unsigned long vm_flags,
struct task_struct *tsk)
{
struct vm_area_struct *vma;
- int fault;
+ vm_fault_t fault;
vma = find_vma(mm, addr);
fault = VM_FAULT_BADMAP;
@@ -427,7 +427,7 @@ static int __kprobes do_page_fault(unsig
struct task_struct *tsk;
struct mm_struct *mm;
struct siginfo si;
- int fault, major = 0;
+ vm_fault_t fault, major = 0;
unsigned long vm_flags = VM_READ | VM_WRITE;
unsigned int mm_flags = FAULT_FLAG_ALLOW_RETRY | FAULT_FLAG_KILLABLE;
--- a/arch/arm/mm/fault.c~mm-convert-return-type-of-handle_mm_fault-caller-to-vm_fault_t
+++ a/arch/arm/mm/fault.c
@@ -224,12 +224,12 @@ static inline bool access_error(unsigned
return vma->vm_flags & mask ? false : true;
}
-static int __kprobes
+static vm_fault_t __kprobes
__do_page_fault(struct mm_struct *mm, unsigned long addr, unsigned int fsr,
unsigned int flags, struct task_struct *tsk)
{
struct vm_area_struct *vma;
- int fault;
+ vm_fault_t fault;
vma = find_vma(mm, addr);
fault = VM_FAULT_BADMAP;
@@ -264,7 +264,8 @@ do_page_fault(unsigned long addr, unsign
{
struct task_struct *tsk;
struct mm_struct *mm;
- int fault, sig, code;
+ int sig, code;
+ vm_fault_t fault;
unsigned int flags = FAULT_FLAG_ALLOW_RETRY | FAULT_FLAG_KILLABLE;
if (notify_page_fault(regs, fsr))
--- a/arch/hexagon/mm/vm_fault.c~mm-convert-return-type-of-handle_mm_fault-caller-to-vm_fault_t
+++ a/arch/hexagon/mm/vm_fault.c
@@ -52,7 +52,7 @@ void do_page_fault(unsigned long address
struct mm_struct *mm = current->mm;
int si_signo;
int si_code = SEGV_MAPERR;
- int fault;
+ vm_fault_t fault;
const struct exception_table_entry *fixup;
unsigned int flags = FAULT_FLAG_ALLOW_RETRY | FAULT_FLAG_KILLABLE;
--- a/arch/ia64/mm/fault.c~mm-convert-return-type-of-handle_mm_fault-caller-to-vm_fault_t
+++ a/arch/ia64/mm/fault.c
@@ -86,7 +86,7 @@ ia64_do_page_fault (unsigned long addres
struct vm_area_struct *vma, *prev_vma;
struct mm_struct *mm = current->mm;
unsigned long mask;
- int fault;
+ vm_fault_t fault;
unsigned int flags = FAULT_FLAG_ALLOW_RETRY | FAULT_FLAG_KILLABLE;
mask = ((((isr >> IA64_ISR_X_BIT) & 1UL) << VM_EXEC_BIT)
--- a/arch/m68k/mm/fault.c~mm-convert-return-type-of-handle_mm_fault-caller-to-vm_fault_t
+++ a/arch/m68k/mm/fault.c
@@ -70,7 +70,7 @@ int do_page_fault(struct pt_regs *regs,
{
struct mm_struct *mm = current->mm;
struct vm_area_struct * vma;
- int fault;
+ vm_fault_t fault;
unsigned int flags = FAULT_FLAG_ALLOW_RETRY | FAULT_FLAG_KILLABLE;
pr_debug("do page fault:\nregs->sr=%#x, regs->pc=%#lx, address=%#lx, %ld, %p\n",
@@ -136,7 +136,7 @@ good_area:
*/
fault = handle_mm_fault(vma, address, flags);
- pr_debug("handle_mm_fault returns %d\n", fault);
+ pr_debug("handle_mm_fault returns %x\n", fault);
if ((fault & VM_FAULT_RETRY) && fatal_signal_pending(current))
return 0;
--- a/arch/microblaze/mm/fault.c~mm-convert-return-type-of-handle_mm_fault-caller-to-vm_fault_t
+++ a/arch/microblaze/mm/fault.c
@@ -90,7 +90,7 @@ void do_page_fault(struct pt_regs *regs,
struct mm_struct *mm = current->mm;
int code = SEGV_MAPERR;
int is_write = error_code & ESR_S;
- int fault;
+ vm_fault_t fault;
unsigned int flags = FAULT_FLAG_ALLOW_RETRY | FAULT_FLAG_KILLABLE;
regs->ear = address;
--- a/arch/mips/mm/fault.c~mm-convert-return-type-of-handle_mm_fault-caller-to-vm_fault_t
+++ a/arch/mips/mm/fault.c
@@ -43,7 +43,7 @@ static void __kprobes __do_page_fault(st
struct mm_struct *mm = tsk->mm;
const int field = sizeof(unsigned long) * 2;
int si_code;
- int fault;
+ vm_fault_t fault;
unsigned int flags = FAULT_FLAG_ALLOW_RETRY | FAULT_FLAG_KILLABLE;
static DEFINE_RATELIMIT_STATE(ratelimit_state, 5 * HZ, 10);
--- a/arch/nds32/mm/fault.c~mm-convert-return-type-of-handle_mm_fault-caller-to-vm_fault_t
+++ a/arch/nds32/mm/fault.c
@@ -73,7 +73,7 @@ void do_page_fault(unsigned long entry,
struct mm_struct *mm;
struct vm_area_struct *vma;
int si_code;
- int fault;
+ vm_fault_t fault;
unsigned int mask = VM_READ | VM_WRITE | VM_EXEC;
unsigned int flags = FAULT_FLAG_ALLOW_RETRY | FAULT_FLAG_KILLABLE;
--- a/arch/nios2/mm/fault.c~mm-convert-return-type-of-handle_mm_fault-caller-to-vm_fault_t
+++ a/arch/nios2/mm/fault.c
@@ -47,7 +47,7 @@ asmlinkage void do_page_fault(struct pt_
struct task_struct *tsk = current;
struct mm_struct *mm = tsk->mm;
int code = SEGV_MAPERR;
- int fault;
+ vm_fault_t fault;
unsigned int flags = FAULT_FLAG_ALLOW_RETRY | FAULT_FLAG_KILLABLE;
cause >>= 2;
--- a/arch/openrisc/mm/fault.c~mm-convert-return-type-of-handle_mm_fault-caller-to-vm_fault_t
+++ a/arch/openrisc/mm/fault.c
@@ -53,7 +53,7 @@ asmlinkage void do_page_fault(struct pt_
struct mm_struct *mm;
struct vm_area_struct *vma;
int si_code;
- int fault;
+ vm_fault_t fault;
unsigned int flags = FAULT_FLAG_ALLOW_RETRY | FAULT_FLAG_KILLABLE;
tsk = current;
--- a/arch/parisc/mm/fault.c~mm-convert-return-type-of-handle_mm_fault-caller-to-vm_fault_t
+++ a/arch/parisc/mm/fault.c
@@ -262,7 +262,7 @@ void do_page_fault(struct pt_regs *regs,
struct task_struct *tsk;
struct mm_struct *mm;
unsigned long acc_type;
- int fault = 0;
+ vm_fault_t fault = 0;
unsigned int flags;
if (faulthandler_disabled())
--- a/arch/powerpc/include/asm/copro.h~mm-convert-return-type-of-handle_mm_fault-caller-to-vm_fault_t
+++ a/arch/powerpc/include/asm/copro.h
@@ -10,13 +10,15 @@
#ifndef _ASM_POWERPC_COPRO_H
#define _ASM_POWERPC_COPRO_H
+#include <linux/mm_types.h>
+
struct copro_slb
{
u64 esid, vsid;
};
int copro_handle_mm_fault(struct mm_struct *mm, unsigned long ea,
- unsigned long dsisr, unsigned *flt);
+ unsigned long dsisr, vm_fault_t *flt);
int copro_calculate_slb(struct mm_struct *mm, u64 ea, struct copro_slb *slb);
--- a/arch/powerpc/mm/copro_fault.c~mm-convert-return-type-of-handle_mm_fault-caller-to-vm_fault_t
+++ a/arch/powerpc/mm/copro_fault.c
@@ -34,7 +34,7 @@
* to handle fortunately.
*/
int copro_handle_mm_fault(struct mm_struct *mm, unsigned long ea,
- unsigned long dsisr, unsigned *flt)
+ unsigned long dsisr, vm_fault_t *flt)
{
struct vm_area_struct *vma;
unsigned long is_write;
--- a/arch/powerpc/mm/fault.c~mm-convert-return-type-of-handle_mm_fault-caller-to-vm_fault_t
+++ a/arch/powerpc/mm/fault.c
@@ -156,7 +156,7 @@ static noinline int bad_access(struct pt
}
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 *reg
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_reg
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))
--- a/arch/powerpc/platforms/cell/spufs/fault.c~mm-convert-return-type-of-handle_mm_fault-caller-to-vm_fault_t
+++ a/arch/powerpc/platforms/cell/spufs/fault.c
@@ -111,7 +111,7 @@ int spufs_handle_class1(struct spu_conte
{
u64 ea, dsisr, access;
unsigned long flags;
- unsigned flt = 0;
+ vm_fault_t flt = 0;
int ret;
/*
--- a/arch/riscv/mm/fault.c~mm-convert-return-type-of-handle_mm_fault-caller-to-vm_fault_t
+++ a/arch/riscv/mm/fault.c
@@ -41,7 +41,8 @@ asmlinkage void do_page_fault(struct pt_
struct mm_struct *mm;
unsigned long addr, cause;
unsigned int flags = FAULT_FLAG_ALLOW_RETRY | FAULT_FLAG_KILLABLE;
- int fault, code = SEGV_MAPERR;
+ int code = SEGV_MAPERR;
+ vm_fault_t fault;
cause = regs->scause;
addr = regs->sbadaddr;
--- a/arch/s390/mm/fault.c~mm-convert-return-type-of-handle_mm_fault-caller-to-vm_fault_t
+++ a/arch/s390/mm/fault.c
@@ -341,7 +341,8 @@ static noinline int signal_return(struct
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(stru
* 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
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);
--- a/arch/sh/mm/fault.c~mm-convert-return-type-of-handle_mm_fault-caller-to-vm_fault_t
+++ a/arch/sh/mm/fault.c
@@ -313,7 +313,7 @@ do_sigbus(struct pt_regs *regs, unsigned
static noinline int
mm_fault_error(struct pt_regs *regs, unsigned long error_code,
- unsigned long address, unsigned int fault)
+ unsigned long address, vm_fault_t fault)
{
/*
* Pagefault was interrupted by SIGKILL. We have no reason to
@@ -396,7 +396,7 @@ asmlinkage void __kprobes do_page_fault(
struct task_struct *tsk;
struct mm_struct *mm;
struct vm_area_struct * vma;
- int fault;
+ vm_fault_t fault;
unsigned int flags = FAULT_FLAG_ALLOW_RETRY | FAULT_FLAG_KILLABLE;
tsk = current;
--- a/arch/sparc/mm/fault_32.c~mm-convert-return-type-of-handle_mm_fault-caller-to-vm_fault_t
+++ a/arch/sparc/mm/fault_32.c
@@ -166,7 +166,8 @@ asmlinkage void do_sparc_fault(struct pt
unsigned int fixup;
unsigned long g2;
int from_user = !(regs->psr & PSR_PS);
- int fault, code;
+ int code;
+ vm_fault_t fault;
unsigned int flags = FAULT_FLAG_ALLOW_RETRY | FAULT_FLAG_KILLABLE;
if (text_fault)
--- a/arch/sparc/mm/fault_64.c~mm-convert-return-type-of-handle_mm_fault-caller-to-vm_fault_t
+++ a/arch/sparc/mm/fault_64.c
@@ -278,7 +278,8 @@ asmlinkage void __kprobes do_sparc64_fau
struct mm_struct *mm = current->mm;
struct vm_area_struct *vma;
unsigned int insn = 0;
- int si_code, fault_code, fault;
+ int si_code, fault_code;
+ vm_fault_t fault;
unsigned long address, mm_rss;
unsigned int flags = FAULT_FLAG_ALLOW_RETRY | FAULT_FLAG_KILLABLE;
--- a/arch/um/kernel/trap.c~mm-convert-return-type-of-handle_mm_fault-caller-to-vm_fault_t
+++ a/arch/um/kernel/trap.c
@@ -72,7 +72,7 @@ good_area:
}
do {
- int fault;
+ vm_fault_t fault;
fault = handle_mm_fault(vma, address, flags);
--- a/arch/unicore32/mm/fault.c~mm-convert-return-type-of-handle_mm_fault-caller-to-vm_fault_t
+++ a/arch/unicore32/mm/fault.c
@@ -168,11 +168,11 @@ static inline bool access_error(unsigned
return vma->vm_flags & mask ? false : true;
}
-static int __do_pf(struct mm_struct *mm, unsigned long addr, unsigned int fsr,
- unsigned int flags, struct task_struct *tsk)
+static vm_fault_t __do_pf(struct mm_struct *mm, unsigned long addr,
+ unsigned int fsr, unsigned int flags, struct task_struct *tsk)
{
struct vm_area_struct *vma;
- int fault;
+ vm_fault_t fault;
vma = find_vma(mm, addr);
fault = VM_FAULT_BADMAP;
@@ -209,7 +209,8 @@ static int do_pf(unsigned long addr, uns
{
struct task_struct *tsk;
struct mm_struct *mm;
- int fault, sig, code;
+ int sig, code;
+ vm_fault_t fault;
unsigned int flags = FAULT_FLAG_ALLOW_RETRY | FAULT_FLAG_KILLABLE;
tsk = current;
--- a/arch/x86/mm/fault.c~mm-convert-return-type-of-handle_mm_fault-caller-to-vm_fault_t
+++ a/arch/x86/mm/fault.c
@@ -16,6 +16,7 @@
#include <linux/prefetch.h> /* prefetchw */
#include <linux/context_tracking.h> /* exception_enter(), ... */
#include <linux/uaccess.h> /* faulthandler_disabled() */
+#include <linux/mm_types.h>
#include <asm/cpufeature.h> /* boot_cpu_has, ... */
#include <asm/traps.h> /* dotraplinkage, ... */
@@ -999,7 +1000,7 @@ do_sigbus(struct pt_regs *regs, unsigned
static noinline void
mm_fault_error(struct pt_regs *regs, unsigned long error_code,
- unsigned long address, u32 *pkey, unsigned int fault)
+ unsigned long address, u32 *pkey, vm_fault_t fault)
{
if (fatal_signal_pending(current) && !(error_code & X86_PF_USER)) {
no_context(regs, error_code, address, 0, 0);
@@ -1213,7 +1214,7 @@ __do_page_fault(struct pt_regs *regs, un
struct vm_area_struct *vma;
struct task_struct *tsk;
struct mm_struct *mm;
- int fault, major = 0;
+ vm_fault_t fault, major = 0;
unsigned int flags = FAULT_FLAG_ALLOW_RETRY | FAULT_FLAG_KILLABLE;
u32 pkey;
--- a/arch/xtensa/mm/fault.c~mm-convert-return-type-of-handle_mm_fault-caller-to-vm_fault_t
+++ a/arch/xtensa/mm/fault.c
@@ -42,7 +42,7 @@ void do_page_fault(struct pt_regs *regs)
int code;
int is_write, is_exec;
- int fault;
+ vm_fault_t fault;
unsigned int flags = FAULT_FLAG_ALLOW_RETRY | FAULT_FLAG_KILLABLE;
code = SEGV_MAPERR;
--- a/drivers/iommu/amd_iommu_v2.c~mm-convert-return-type-of-handle_mm_fault-caller-to-vm_fault_t
+++ a/drivers/iommu/amd_iommu_v2.c
@@ -508,7 +508,7 @@ static void do_fault(struct work_struct
{
struct fault *fault = container_of(work, struct fault, work);
struct vm_area_struct *vma;
- int ret = VM_FAULT_ERROR;
+ vm_fault_t ret = VM_FAULT_ERROR;
unsigned int flags = 0;
struct mm_struct *mm;
u64 address;
--- a/drivers/iommu/intel-svm.c~mm-convert-return-type-of-handle_mm_fault-caller-to-vm_fault_t
+++ a/drivers/iommu/intel-svm.c
@@ -24,6 +24,7 @@
#include <linux/pci-ats.h>
#include <linux/dmar.h>
#include <linux/interrupt.h>
+#include <linux/mm_types.h>
#include <asm/page.h>
#define PASID_ENTRY_P BIT_ULL(0)
@@ -594,7 +595,8 @@ static irqreturn_t prq_event_thread(int
struct vm_area_struct *vma;
struct page_req_dsc *req;
struct qi_desc resp;
- int ret, result;
+ int result;
+ vm_fault_t ret;
u64 address;
handled = 1;
--- a/drivers/misc/cxl/fault.c~mm-convert-return-type-of-handle_mm_fault-caller-to-vm_fault_t
+++ a/drivers/misc/cxl/fault.c
@@ -134,7 +134,7 @@ static int cxl_handle_segment_miss(struc
int cxl_handle_mm_fault(struct mm_struct *mm, u64 dsisr, u64 dar)
{
- unsigned flt = 0;
+ vm_fault_t flt = 0;
int result;
unsigned long access, flags, inv_flags = 0;
--- a/drivers/misc/ocxl/link.c~mm-convert-return-type-of-handle_mm_fault-caller-to-vm_fault_t
+++ a/drivers/misc/ocxl/link.c
@@ -2,6 +2,7 @@
// Copyright 2017 IBM Corp.
#include <linux/sched/mm.h>
#include <linux/mutex.h>
+#include <linux/mm_types.h>
#include <linux/mmu_context.h>
#include <asm/copro.h>
#include <asm/pnv-ocxl.h>
@@ -126,7 +127,7 @@ static void ack_irq(struct spa *spa, enu
static void xsl_fault_handler_bh(struct work_struct *fault_work)
{
- unsigned int flt = 0;
+ vm_fault_t flt = 0;
unsigned long access, flags, inv_flags = 0;
enum xsl_response r;
struct xsl_fault *fault = container_of(fault_work, struct xsl_fault,
--- a/mm/hmm.c~mm-convert-return-type-of-handle_mm_fault-caller-to-vm_fault_t
+++ a/mm/hmm.c
@@ -299,14 +299,14 @@ static int hmm_vma_do_fault(struct mm_wa
struct hmm_vma_walk *hmm_vma_walk = walk->private;
struct hmm_range *range = hmm_vma_walk->range;
struct vm_area_struct *vma = walk->vma;
- int r;
+ vm_fault_t ret;
flags |= hmm_vma_walk->block ? 0 : FAULT_FLAG_ALLOW_RETRY;
flags |= write_fault ? FAULT_FLAG_WRITE : 0;
- r = handle_mm_fault(vma, addr, flags);
- if (r & VM_FAULT_RETRY)
+ ret = handle_mm_fault(vma, addr, flags);
+ if (ret & VM_FAULT_RETRY)
return -EBUSY;
- if (r & VM_FAULT_ERROR) {
+ if (ret & VM_FAULT_ERROR) {
*pfn = range->values[HMM_PFN_ERROR];
return -EFAULT;
}
--- a/mm/ksm.c~mm-convert-return-type-of-handle_mm_fault-caller-to-vm_fault_t
+++ a/mm/ksm.c
@@ -470,7 +470,7 @@ static inline bool ksm_test_exit(struct
static int break_ksm(struct vm_area_struct *vma, unsigned long addr)
{
struct page *page;
- int ret = 0;
+ vm_fault_t ret = 0;
do {
cond_resched();
_
