[PATCHv8 02/32] mm: do not pass mm_struct into handle_mm_fault

From: Kirill A. Shutemov
Date: Thu May 12 2016 - 11:42:01 EST

We always have vma->vm_mm around.

Signed-off-by: Kirill A. Shutemov <kirill.shutemov@xxxxxxxxxxxxxxx>
---
arch/alpha/mm/fault.c | 2 +-
arch/arc/mm/fault.c | 2 +-
arch/arm/mm/fault.c | 2 +-
arch/arm64/mm/fault.c | 2 +-
arch/avr32/mm/fault.c | 2 +-
arch/cris/mm/fault.c | 2 +-
arch/frv/mm/fault.c | 2 +-
arch/hexagon/mm/vm_fault.c | 2 +-
arch/ia64/mm/fault.c | 2 +-
arch/m32r/mm/fault.c | 2 +-
arch/m68k/mm/fault.c | 2 +-
arch/metag/mm/fault.c | 2 +-
arch/microblaze/mm/fault.c | 2 +-
arch/mips/mm/fault.c | 2 +-
arch/mn10300/mm/fault.c | 2 +-
arch/nios2/mm/fault.c | 2 +-
arch/openrisc/mm/fault.c | 2 +-
arch/parisc/mm/fault.c | 2 +-
arch/powerpc/mm/copro_fault.c | 2 +-
arch/powerpc/mm/fault.c | 2 +-
arch/s390/mm/fault.c | 2 +-
arch/score/mm/fault.c | 2 +-
arch/sh/mm/fault.c | 2 +-
arch/sparc/mm/fault_32.c | 4 ++--
arch/sparc/mm/fault_64.c | 2 +-
arch/tile/mm/fault.c | 2 +-
arch/um/kernel/trap.c | 2 +-
arch/unicore32/mm/fault.c | 2 +-
arch/x86/mm/fault.c | 2 +-
arch/xtensa/mm/fault.c | 2 +-
drivers/iommu/amd_iommu_v2.c | 3 +--
drivers/iommu/intel-svm.c | 2 +-
include/linux/mm.h | 9 ++++-----
mm/gup.c | 5 ++---
mm/ksm.c | 5 ++---
mm/memory.c | 13 +++++++------
36 files changed, 48 insertions(+), 51 deletions(-)

diff --git a/arch/alpha/mm/fault.c b/arch/alpha/mm/fault.c
index 4a905bd667e2..83e9eee57a55 100644
--- a/arch/alpha/mm/fault.c
+++ b/arch/alpha/mm/fault.c
@@ -147,7 +147,7 @@ retry:
/* If for any reason at all we couldn't handle the fault,
make sure we exit gracefully rather than endlessly redo
the fault. */
- fault = handle_mm_fault(mm, vma, address, flags);
+ fault = handle_mm_fault(vma, address, flags);

if ((fault & VM_FAULT_RETRY) && fatal_signal_pending(current))
return;
diff --git a/arch/arc/mm/fault.c b/arch/arc/mm/fault.c
index af63f4a13e60..e94e5aa33985 100644
--- a/arch/arc/mm/fault.c
+++ b/arch/arc/mm/fault.c
@@ -137,7 +137,7 @@ good_area:
* make sure we exit gracefully rather than endlessly redo
* the fault.
*/
- fault = handle_mm_fault(mm, vma, address, flags);
+ fault = handle_mm_fault(vma, address, flags);

/* If Pagefault was interrupted by SIGKILL, exit page fault "early" */
if (unlikely(fatal_signal_pending(current))) {
diff --git a/arch/arm/mm/fault.c b/arch/arm/mm/fault.c
index ad5841856007..3a2e678b8d30 100644
--- a/arch/arm/mm/fault.c
+++ b/arch/arm/mm/fault.c
@@ -243,7 +243,7 @@ good_area:
goto out;
}

- return handle_mm_fault(mm, vma, addr & PAGE_MASK, flags);
+ return handle_mm_fault(vma, addr & PAGE_MASK, flags);

check_stack:
/* Don't allow expansion below FIRST_USER_ADDRESS */
diff --git a/arch/arm64/mm/fault.c b/arch/arm64/mm/fault.c
index 95df28bc875f..4dbb076b9e1f 100644
--- a/arch/arm64/mm/fault.c
+++ b/arch/arm64/mm/fault.c
@@ -183,7 +183,7 @@ good_area:
goto out;
}

- return handle_mm_fault(mm, vma, addr & PAGE_MASK, mm_flags);
+ return handle_mm_fault(vma, addr & PAGE_MASK, mm_flags);

check_stack:
if (vma->vm_flags & VM_GROWSDOWN && !expand_stack(vma, addr))
diff --git a/arch/avr32/mm/fault.c b/arch/avr32/mm/fault.c
index c03533937a9f..a4b7edac8f10 100644
--- a/arch/avr32/mm/fault.c
+++ b/arch/avr32/mm/fault.c
@@ -134,7 +134,7 @@ good_area:
* sure we exit gracefully rather than endlessly redo the
* fault.
*/
- fault = handle_mm_fault(mm, vma, address, flags);
+ fault = handle_mm_fault(vma, address, flags);

if ((fault & VM_FAULT_RETRY) && fatal_signal_pending(current))
return;
diff --git a/arch/cris/mm/fault.c b/arch/cris/mm/fault.c
index 3066d40a6db1..112ef26c7f2e 100644
--- a/arch/cris/mm/fault.c
+++ b/arch/cris/mm/fault.c
@@ -168,7 +168,7 @@ retry:
* the fault.
*/

- fault = handle_mm_fault(mm, vma, address, flags);
+ fault = handle_mm_fault(vma, address, flags);

if ((fault & VM_FAULT_RETRY) && fatal_signal_pending(current))
return;
diff --git a/arch/frv/mm/fault.c b/arch/frv/mm/fault.c
index 61d99767fe16..614a46c413d2 100644
--- a/arch/frv/mm/fault.c
+++ b/arch/frv/mm/fault.c
@@ -164,7 +164,7 @@ asmlinkage void do_page_fault(int datammu, unsigned long esr0, unsigned long ear
* make sure we exit gracefully rather than endlessly redo
* the fault.
*/
- fault = handle_mm_fault(mm, vma, ear0, flags);
+ fault = handle_mm_fault(vma, ear0, flags);
if (unlikely(fault & VM_FAULT_ERROR)) {
if (fault & VM_FAULT_OOM)
goto out_of_memory;
diff --git a/arch/hexagon/mm/vm_fault.c b/arch/hexagon/mm/vm_fault.c
index 8704c9320032..bd7c251e2bce 100644
--- a/arch/hexagon/mm/vm_fault.c
+++ b/arch/hexagon/mm/vm_fault.c
@@ -101,7 +101,7 @@ good_area:
break;
}

- fault = handle_mm_fault(mm, vma, address, flags);
+ fault = handle_mm_fault(vma, address, flags);

if ((fault & VM_FAULT_RETRY) && fatal_signal_pending(current))
return;
diff --git a/arch/ia64/mm/fault.c b/arch/ia64/mm/fault.c
index 70b40d1205a6..fa6ad95e992e 100644
--- a/arch/ia64/mm/fault.c
+++ b/arch/ia64/mm/fault.c
@@ -159,7 +159,7 @@ retry:
* sure we exit gracefully rather than endlessly redo the
* fault.
*/
- fault = handle_mm_fault(mm, vma, address, flags);
+ fault = handle_mm_fault(vma, address, flags);

if ((fault & VM_FAULT_RETRY) && fatal_signal_pending(current))
return;
diff --git a/arch/m32r/mm/fault.c b/arch/m32r/mm/fault.c
index 8f9875b7933d..a3785d3644c2 100644
--- a/arch/m32r/mm/fault.c
+++ b/arch/m32r/mm/fault.c
@@ -196,7 +196,7 @@ good_area:
*/
addr = (address & PAGE_MASK);
set_thread_fault_code(error_code);
- fault = handle_mm_fault(mm, vma, addr, flags);
+ fault = handle_mm_fault(vma, addr, flags);
if (unlikely(fault & VM_FAULT_ERROR)) {
if (fault & VM_FAULT_OOM)
goto out_of_memory;
diff --git a/arch/m68k/mm/fault.c b/arch/m68k/mm/fault.c
index 6a94cdd0c830..bd66a0b20c6b 100644
--- a/arch/m68k/mm/fault.c
+++ b/arch/m68k/mm/fault.c
@@ -136,7 +136,7 @@ good_area:
* the fault.
*/

- fault = handle_mm_fault(mm, vma, address, flags);
+ fault = handle_mm_fault(vma, address, flags);
pr_debug("handle_mm_fault returns %d\n", fault);

if ((fault & VM_FAULT_RETRY) && fatal_signal_pending(current))
diff --git a/arch/metag/mm/fault.c b/arch/metag/mm/fault.c
index f57edca63609..372783a67dda 100644
--- a/arch/metag/mm/fault.c
+++ b/arch/metag/mm/fault.c
@@ -133,7 +133,7 @@ good_area:
* make sure we exit gracefully rather than endlessly redo
* the fault.
*/
- fault = handle_mm_fault(mm, vma, address, flags);
+ fault = handle_mm_fault(vma, address, flags);

if ((fault & VM_FAULT_RETRY) && fatal_signal_pending(current))
return 0;
diff --git a/arch/microblaze/mm/fault.c b/arch/microblaze/mm/fault.c
index 177dfc003643..abb678ccde6f 100644
--- a/arch/microblaze/mm/fault.c
+++ b/arch/microblaze/mm/fault.c
@@ -216,7 +216,7 @@ good_area:
* make sure we exit gracefully rather than endlessly redo
* the fault.
*/
- fault = handle_mm_fault(mm, vma, address, flags);
+ fault = handle_mm_fault(vma, address, flags);

if ((fault & VM_FAULT_RETRY) && fatal_signal_pending(current))
return;
diff --git a/arch/mips/mm/fault.c b/arch/mips/mm/fault.c
index 4b88fa031891..9560ad731120 100644
--- a/arch/mips/mm/fault.c
+++ b/arch/mips/mm/fault.c
@@ -153,7 +153,7 @@ good_area:
* make sure we exit gracefully rather than endlessly redo
* the fault.
*/
- fault = handle_mm_fault(mm, vma, address, flags);
+ fault = handle_mm_fault(vma, address, flags);

if ((fault & VM_FAULT_RETRY) && fatal_signal_pending(current))
return;
diff --git a/arch/mn10300/mm/fault.c b/arch/mn10300/mm/fault.c
index 4a1d181ed32f..f23781d6bbb3 100644
--- a/arch/mn10300/mm/fault.c
+++ b/arch/mn10300/mm/fault.c
@@ -254,7 +254,7 @@ good_area:
* make sure we exit gracefully rather than endlessly redo
* the fault.
*/
- fault = handle_mm_fault(mm, vma, address, flags);
+ fault = handle_mm_fault(vma, address, flags);

if ((fault & VM_FAULT_RETRY) && fatal_signal_pending(current))
return;
diff --git a/arch/nios2/mm/fault.c b/arch/nios2/mm/fault.c
index b51878b0c6b8..affc4eb3f89e 100644
--- a/arch/nios2/mm/fault.c
+++ b/arch/nios2/mm/fault.c
@@ -131,7 +131,7 @@ good_area:
* make sure we exit gracefully rather than endlessly redo
* the fault.
*/
- fault = handle_mm_fault(mm, vma, address, flags);
+ fault = handle_mm_fault(vma, address, flags);

if ((fault & VM_FAULT_RETRY) && fatal_signal_pending(current))
return;
diff --git a/arch/openrisc/mm/fault.c b/arch/openrisc/mm/fault.c
index 230ac20ae794..e94cd225e816 100644
--- a/arch/openrisc/mm/fault.c
+++ b/arch/openrisc/mm/fault.c
@@ -163,7 +163,7 @@ good_area:
* the fault.
*/

- fault = handle_mm_fault(mm, vma, address, flags);
+ fault = handle_mm_fault(vma, address, flags);

if ((fault & VM_FAULT_RETRY) && fatal_signal_pending(current))
return;
diff --git a/arch/parisc/mm/fault.c b/arch/parisc/mm/fault.c
index 16dbe81c97c9..163af2c31d76 100644
--- a/arch/parisc/mm/fault.c
+++ b/arch/parisc/mm/fault.c
@@ -239,7 +239,7 @@ good_area:
* fault.
*/

- fault = handle_mm_fault(mm, vma, address, flags);
+ fault = handle_mm_fault(vma, address, flags);

if ((fault & VM_FAULT_RETRY) && fatal_signal_pending(current))
return;
diff --git a/arch/powerpc/mm/copro_fault.c b/arch/powerpc/mm/copro_fault.c
index 6527882ce05e..bb0354222b11 100644
--- a/arch/powerpc/mm/copro_fault.c
+++ b/arch/powerpc/mm/copro_fault.c
@@ -75,7 +75,7 @@ int copro_handle_mm_fault(struct mm_struct *mm, unsigned long ea,
}

ret = 0;
- *flt = handle_mm_fault(mm, vma, ea, is_write ? FAULT_FLAG_WRITE : 0);
+ *flt = handle_mm_fault(vma, ea, is_write ? FAULT_FLAG_WRITE : 0);
if (unlikely(*flt & VM_FAULT_ERROR)) {
if (*flt & VM_FAULT_OOM) {
ret = -ENOMEM;
diff --git a/arch/powerpc/mm/fault.c b/arch/powerpc/mm/fault.c
index a67c6d781c52..a4db22f65021 100644
--- a/arch/powerpc/mm/fault.c
+++ b/arch/powerpc/mm/fault.c
@@ -429,7 +429,7 @@ good_area:
* make sure we exit gracefully rather than endlessly redo
* the fault.
*/
- fault = handle_mm_fault(mm, vma, address, flags);
+ fault = handle_mm_fault(vma, address, flags);
if (unlikely(fault & (VM_FAULT_RETRY|VM_FAULT_ERROR))) {
if (fault & VM_FAULT_SIGSEGV)
goto bad_area;
diff --git a/arch/s390/mm/fault.c b/arch/s390/mm/fault.c
index cce577feab1e..a9524531320e 100644
--- a/arch/s390/mm/fault.c
+++ b/arch/s390/mm/fault.c
@@ -455,7 +455,7 @@ retry:
* make sure we exit gracefully rather than endlessly redo
* the fault.
*/
- fault = handle_mm_fault(mm, vma, address, flags);
+ fault = handle_mm_fault(vma, address, flags);
/* No reason to continue if interrupted by SIGKILL. */
if ((fault & VM_FAULT_RETRY) && fatal_signal_pending(current)) {
fault = VM_FAULT_SIGNAL;
diff --git a/arch/score/mm/fault.c b/arch/score/mm/fault.c
index 37a6c2e0e969..995b71e4db4b 100644
--- a/arch/score/mm/fault.c
+++ b/arch/score/mm/fault.c
@@ -111,7 +111,7 @@ good_area:
* make sure we exit gracefully rather than endlessly redo
* the fault.
*/
- fault = handle_mm_fault(mm, vma, address, flags);
+ fault = handle_mm_fault(vma, address, flags);
if (unlikely(fault & VM_FAULT_ERROR)) {
if (fault & VM_FAULT_OOM)
goto out_of_memory;
diff --git a/arch/sh/mm/fault.c b/arch/sh/mm/fault.c
index 79d8276377d1..9bf876780cef 100644
--- a/arch/sh/mm/fault.c
+++ b/arch/sh/mm/fault.c
@@ -487,7 +487,7 @@ good_area:
* make sure we exit gracefully rather than endlessly redo
* the fault.
*/
- fault = handle_mm_fault(mm, vma, address, flags);
+ fault = handle_mm_fault(vma, address, flags);

if (unlikely(fault & (VM_FAULT_RETRY | VM_FAULT_ERROR)))
if (mm_fault_error(regs, error_code, address, fault))
diff --git a/arch/sparc/mm/fault_32.c b/arch/sparc/mm/fault_32.c
index b6c559cbd64d..4714061d6cd3 100644
--- a/arch/sparc/mm/fault_32.c
+++ b/arch/sparc/mm/fault_32.c
@@ -241,7 +241,7 @@ good_area:
* make sure we exit gracefully rather than endlessly redo
* the fault.
*/
- fault = handle_mm_fault(mm, vma, address, flags);
+ fault = handle_mm_fault(vma, address, flags);

if ((fault & VM_FAULT_RETRY) && fatal_signal_pending(current))
return;
@@ -411,7 +411,7 @@ good_area:
if (!(vma->vm_flags & (VM_READ | VM_EXEC)))
goto bad_area;
}
- switch (handle_mm_fault(mm, vma, address, flags)) {
+ switch (handle_mm_fault(vma, address, flags)) {
case VM_FAULT_SIGBUS:
case VM_FAULT_OOM:
goto do_sigbus;
diff --git a/arch/sparc/mm/fault_64.c b/arch/sparc/mm/fault_64.c
index cb841a33da59..6c43b924a7a2 100644
--- a/arch/sparc/mm/fault_64.c
+++ b/arch/sparc/mm/fault_64.c
@@ -436,7 +436,7 @@ good_area:
goto bad_area;
}

- fault = handle_mm_fault(mm, vma, address, flags);
+ fault = handle_mm_fault(vma, address, flags);

if ((fault & VM_FAULT_RETRY) && fatal_signal_pending(current))
goto exit_exception;
diff --git a/arch/tile/mm/fault.c b/arch/tile/mm/fault.c
index 26734214818c..beba986589e5 100644
--- a/arch/tile/mm/fault.c
+++ b/arch/tile/mm/fault.c
@@ -434,7 +434,7 @@ good_area:
* make sure we exit gracefully rather than endlessly redo
* the fault.
*/
- fault = handle_mm_fault(mm, vma, address, flags);
+ fault = handle_mm_fault(vma, address, flags);

if ((fault & VM_FAULT_RETRY) && fatal_signal_pending(current))
return 0;
diff --git a/arch/um/kernel/trap.c b/arch/um/kernel/trap.c
index 98783dd0fa2e..ad8f206ab5e8 100644
--- a/arch/um/kernel/trap.c
+++ b/arch/um/kernel/trap.c
@@ -73,7 +73,7 @@ good_area:
do {
int fault;

- fault = handle_mm_fault(mm, vma, address, flags);
+ fault = handle_mm_fault(vma, address, flags);

if ((fault & VM_FAULT_RETRY) && fatal_signal_pending(current))
goto out_nosemaphore;
diff --git a/arch/unicore32/mm/fault.c b/arch/unicore32/mm/fault.c
index 2ec3d3adcefc..6c7f70bcaae3 100644
--- a/arch/unicore32/mm/fault.c
+++ b/arch/unicore32/mm/fault.c
@@ -194,7 +194,7 @@ good_area:
* If for any reason at all we couldn't handle the fault, make
* sure we exit gracefully rather than endlessly redo the fault.
*/
- fault = handle_mm_fault(mm, vma, addr & PAGE_MASK, flags);
+ fault = handle_mm_fault(vma, addr & PAGE_MASK, flags);
return fault;

check_stack:
diff --git a/arch/x86/mm/fault.c b/arch/x86/mm/fault.c
index 5ce1ed02f7e8..2915b5b7bd7e 100644
--- a/arch/x86/mm/fault.c
+++ b/arch/x86/mm/fault.c
@@ -1348,7 +1348,7 @@ good_area:
* the fault. Since we never set FAULT_FLAG_RETRY_NOWAIT, if
* we get VM_FAULT_RETRY back, the mmap_sem has been unlocked.
*/
- fault = handle_mm_fault(mm, vma, address, flags);
+ fault = handle_mm_fault(vma, address, flags);
major |= fault & VM_FAULT_MAJOR;

/*
diff --git a/arch/xtensa/mm/fault.c b/arch/xtensa/mm/fault.c
index 7f4a1fdb1502..2725e08ef353 100644
--- a/arch/xtensa/mm/fault.c
+++ b/arch/xtensa/mm/fault.c
@@ -110,7 +110,7 @@ good_area:
* make sure we exit gracefully rather than endlessly redo
* the fault.
*/
- fault = handle_mm_fault(mm, vma, address, flags);
+ fault = handle_mm_fault(vma, address, flags);

if ((fault & VM_FAULT_RETRY) && fatal_signal_pending(current))
return;
diff --git a/drivers/iommu/amd_iommu_v2.c b/drivers/iommu/amd_iommu_v2.c
index 56999d2fac07..fbdaf81ae925 100644
--- a/drivers/iommu/amd_iommu_v2.c
+++ b/drivers/iommu/amd_iommu_v2.c
@@ -538,8 +538,7 @@ static void do_fault(struct work_struct *work)
if (access_error(vma, fault))
goto out;

- ret = handle_mm_fault(mm, vma, address, flags);
-
+ ret = handle_mm_fault(vma, address, flags);
out:
up_read(&mm->mmap_sem);

diff --git a/drivers/iommu/intel-svm.c b/drivers/iommu/intel-svm.c
index d9939fa9b588..8ebb3530afa7 100644
--- a/drivers/iommu/intel-svm.c
+++ b/drivers/iommu/intel-svm.c
@@ -583,7 +583,7 @@ static irqreturn_t prq_event_thread(int irq, void *d)
if (access_error(vma, req))
goto invalid;

- ret = handle_mm_fault(svm->mm, vma, address,
+ ret = handle_mm_fault(vma, address,
req->wr_req ? FAULT_FLAG_WRITE : 0);
if (ret & VM_FAULT_ERROR)
goto invalid;
diff --git a/include/linux/mm.h b/include/linux/mm.h
index ffcff53e3b2b..8fc68ed3c862 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -1214,15 +1214,14 @@ int generic_error_remove_page(struct address_space *mapping, struct page *page);
int invalidate_inode_page(struct page *page);

#ifdef CONFIG_MMU
-extern int handle_mm_fault(struct mm_struct *mm, struct vm_area_struct *vma,
- unsigned long address, unsigned int flags);
+extern int handle_mm_fault(struct vm_area_struct *vma, unsigned long address,
+ unsigned int flags);
extern int fixup_user_fault(struct task_struct *tsk, struct mm_struct *mm,
unsigned long address, unsigned int fault_flags,
bool *unlocked);
#else
-static inline int handle_mm_fault(struct mm_struct *mm,
- struct vm_area_struct *vma, unsigned long address,
- unsigned int flags)
+static inline int handle_mm_fault(struct vm_area_struct *vma,
+ unsigned long address, unsigned int flags)
{
/* should never happen if there's no MMU */
BUG();
diff --git a/mm/gup.c b/mm/gup.c
index fb87aea9edc8..39f751e1cb33 100644
--- a/mm/gup.c
+++ b/mm/gup.c
@@ -351,7 +351,6 @@ unmap:
static int faultin_page(struct task_struct *tsk, struct vm_area_struct *vma,
unsigned long address, unsigned int *flags, int *nonblocking)
{
- struct mm_struct *mm = vma->vm_mm;
unsigned int fault_flags = 0;
int ret;

@@ -376,7 +375,7 @@ static int faultin_page(struct task_struct *tsk, struct vm_area_struct *vma,
fault_flags |= FAULT_FLAG_TRIED;
}

- ret = handle_mm_fault(mm, vma, address, fault_flags);
+ ret = handle_mm_fault(vma, address, fault_flags);
if (ret & VM_FAULT_ERROR) {
if (ret & VM_FAULT_OOM)
return -ENOMEM;
@@ -691,7 +690,7 @@ retry:
if (!vma_permits_fault(vma, fault_flags))
return -EFAULT;

- ret = handle_mm_fault(mm, vma, address, fault_flags);
+ ret = handle_mm_fault(vma, address, fault_flags);
major |= ret & VM_FAULT_MAJOR;
if (ret & VM_FAULT_ERROR) {
if (ret & VM_FAULT_OOM)
diff --git a/mm/ksm.c b/mm/ksm.c
index b99e828172f6..c967d1b8df97 100644
--- a/mm/ksm.c
+++ b/mm/ksm.c
@@ -376,9 +376,8 @@ static int break_ksm(struct vm_area_struct *vma, unsigned long addr)
if (IS_ERR_OR_NULL(page))
break;
if (PageKsm(page))
- ret = handle_mm_fault(vma->vm_mm, vma, addr,
- FAULT_FLAG_WRITE |
- FAULT_FLAG_REMOTE);
+ ret = handle_mm_fault(vma, addr,
+ FAULT_FLAG_WRITE | FAULT_FLAG_REMOTE);
else
ret = VM_FAULT_WRITE;
put_page(page);
diff --git a/mm/memory.c b/mm/memory.c
index 13dcc53f8fba..0002898341a3 100644
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -3363,9 +3363,10 @@ unlock:
* The mmap_sem may have been released depending on flags and our
* return value. See filemap_fault() and __lock_page_or_retry().
*/
-static int __handle_mm_fault(struct mm_struct *mm, struct vm_area_struct *vma,
- unsigned long address, unsigned int flags)
+static int __handle_mm_fault(struct vm_area_struct *vma, unsigned long address,
+ unsigned int flags)
{
+ struct mm_struct *mm = vma->vm_mm;
pgd_t *pgd;
pud_t *pud;
pmd_t *pmd;
@@ -3452,15 +3453,15 @@ static int __handle_mm_fault(struct mm_struct *mm, struct vm_area_struct *vma,
* The mmap_sem may have been released depending on flags and our
* return value. See filemap_fault() and __lock_page_or_retry().
*/
-int handle_mm_fault(struct mm_struct *mm, struct vm_area_struct *vma,
- unsigned long address, unsigned int flags)
+int handle_mm_fault(struct vm_area_struct *vma, unsigned long address,
+ unsigned int flags)
{
int ret;

__set_current_state(TASK_RUNNING);

count_vm_event(PGFAULT);
- mem_cgroup_count_vm_event(mm, PGFAULT);
+ mem_cgroup_count_vm_event(vma->vm_mm, PGFAULT);

/* do counter updates before entering really critical section. */
check_sync_rss_stat(current);
@@ -3472,7 +3473,7 @@ int handle_mm_fault(struct mm_struct *mm, struct vm_area_struct *vma,
if (flags & FAULT_FLAG_USER)
mem_cgroup_oom_enable();

- ret = __handle_mm_fault(mm, vma, address, flags);
+ ret = __handle_mm_fault(vma, address, flags);

if (flags & FAULT_FLAG_USER) {
mem_cgroup_oom_disable();
--
2.8.1