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linux-sg2042
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mm: do not pass mm_struct into handle_mm_fault 

We always have vma->vm_mm around.

Link: http://lkml.kernel.org/r/1466021202-61880-8-git-send-email-kirill.shutemov@linux.intel.com
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Kirill A. Shutemov 2016-07-26 15:25:18 -07:00 committed by Linus Torvalds
parent 6fb8ddfc45
commit dcddffd41d
36 changed files with 48 additions and 51 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
arch/alpha/mm/fault.c
View File

@ -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;

2
arch/arc/mm/fault.c
View File

@ -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))) {

2
arch/arm/mm/fault.c
View File

@ -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 */

2
arch/arm64/mm/fault.c
View File

@ -233,7 +233,7 @@ 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))

2
arch/avr32/mm/fault.c
View File

@ -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;

2
arch/cris/mm/fault.c
View File

@ -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;

2
arch/frv/mm/fault.c
View File

@ -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;

2
arch/hexagon/mm/vm_fault.c
View File

@ -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;

2
arch/ia64/mm/fault.c
View File

@ -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;

2
arch/m32r/mm/fault.c
View File

@ -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;

2
arch/m68k/mm/fault.c
View File

@ -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))

2
arch/metag/mm/fault.c
View File

@ -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;

2
arch/microblaze/mm/fault.c
View File

@ -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;

2
arch/mips/mm/fault.c
View File

@ -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;

2
arch/mn10300/mm/fault.c
View File

@ -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;

2
arch/nios2/mm/fault.c
View File

@ -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;

2
arch/openrisc/mm/fault.c
View File

@ -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;

2
arch/parisc/mm/fault.c
View File

@ -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;

2
arch/powerpc/mm/copro_fault.c
View File

@ -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;

2
arch/powerpc/mm/fault.c
View File

@ -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;

2
arch/s390/mm/fault.c
View File

@ -456,7 +456,7 @@ 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;

2
arch/score/mm/fault.c
View File

@ -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;

2
arch/sh/mm/fault.c
View File

@ -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))

4
arch/sparc/mm/fault_32.c
View File

@ -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;

2
arch/sparc/mm/fault_64.c
View File

@ -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;

2
arch/tile/mm/fault.c
View File

@ -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;

2
arch/um/kernel/trap.c
View File

@ -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;

2
arch/unicore32/mm/fault.c
View File

@ -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:

2
arch/x86/mm/fault.c
View File

@ -1353,7 +1353,7 @@ 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;
/*

2
arch/xtensa/mm/fault.c
View File

@ -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;

3
drivers/iommu/amd_iommu_v2.c
View File

@ -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);

2
drivers/iommu/intel-svm.c
View File

@ -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;

9
include/linux/mm.h
View File

@ -1215,15 +1215,14 @@ 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();

5
mm/gup.c
View File

@ -352,7 +352,6 @@ 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;
@ -377,7 +376,7 @@ 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;
@ -692,7 +691,7 @@ 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)

5
mm/ksm.c
View File

@ -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);

13
mm/memory.c
View File

@ -3420,9 +3420,10 @@ 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;
@ -3509,15 +3510,15 @@ 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);
@ -3529,7 +3530,7 @@ 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();