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authorSouptick Joarder <jrdr.linux@gmail.com>2018-08-18 01:44:47 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2018-08-18 02:20:28 +0300
commit50a7ca3c6fc86955f99fc432fc8a186b968b365b (patch)
tree7918bfb3ef8558bfadbc362d0f1bae79bb20d729 /drivers
parent0882ff9190e3bc51e2d78c3aadd7c690eeaa91d5 (diff)
downloadlinux-50a7ca3c6fc86955f99fc432fc8a186b968b365b.tar.xz
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 'drivers')
-rw-r--r--drivers/iommu/amd_iommu_v2.c2
-rw-r--r--drivers/iommu/intel-svm.c4
-rw-r--r--drivers/misc/cxl/fault.c2
-rw-r--r--drivers/misc/ocxl/link.c3
4 files changed, 7 insertions, 4 deletions
diff --git a/drivers/iommu/amd_iommu_v2.c b/drivers/iommu/amd_iommu_v2.c
index 1d0b53a04a08..58da65df03f5 100644
--- a/drivers/iommu/amd_iommu_v2.c
+++ b/drivers/iommu/amd_iommu_v2.c
@@ -508,7 +508,7 @@ static void do_fault(struct work_struct *work)
{
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;
diff --git a/drivers/iommu/intel-svm.c b/drivers/iommu/intel-svm.c
index 45f6e581cd56..7d65aab36a96 100644
--- a/drivers/iommu/intel-svm.c
+++ b/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 irq, void *d)
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;
diff --git a/drivers/misc/cxl/fault.c b/drivers/misc/cxl/fault.c
index 70dbb6de102c..93ecc67a0f3b 100644
--- a/drivers/misc/cxl/fault.c
+++ b/drivers/misc/cxl/fault.c
@@ -134,7 +134,7 @@ static int cxl_handle_segment_miss(struct cxl_context *ctx,
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;
diff --git a/drivers/misc/ocxl/link.c b/drivers/misc/ocxl/link.c
index 88876ae8f330..ffc731b0731a 100644
--- a/drivers/misc/ocxl/link.c
+++ b/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, enum xsl_response r)
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,