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ARM: 9129/1: mm: Kill task_struct argument for __do_page_fault() 

The __do_page_fault() won't use task_struct argument, kill it
and also use current->mm directly in do_page_fault().

No functional change.

Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com>
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
This commit is contained in:
Wang Kefeng 2021-09-22 14:56:28 +01:00 committed by Russell King (Oracle)
parent caed89dab0
commit 488cab12c3
1 changed files with 3 additions and 7 deletions
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10
arch/arm/mm/fault.c
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@ -202,8 +202,7 @@ static inline bool access_error(unsigned int fsr, struct vm_area_struct *vma)
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 pt_regs *regs)
unsigned int flags, struct pt_regs *regs)
{
struct vm_area_struct *vma = find_vma(mm, addr);
if (unlikely(!vma))
@ -231,8 +230,7 @@ __do_page_fault(struct mm_struct *mm, unsigned long addr, unsigned int fsr,
static int __kprobes
do_page_fault(unsigned long addr, unsigned int fsr, struct pt_regs *regs)
{
struct task_struct *tsk;
struct mm_struct *mm;
struct mm_struct *mm = current->mm;
int sig, code;
vm_fault_t fault;
unsigned int flags = FAULT_FLAG_DEFAULT;
@ -240,8 +238,6 @@ do_page_fault(unsigned long addr, unsigned int fsr, struct pt_regs *regs)
if (kprobe_page_fault(regs, fsr))
return 0;
tsk = current;
mm = tsk->mm;
/* Enable interrupts if they were enabled in the parent context. */
if (interrupts_enabled(regs))
@ -285,7 +281,7 @@ retry:
#endif
}
fault = __do_page_fault(mm, addr, fsr, flags, tsk, regs);
fault = __do_page_fault(mm, addr, fsr, flags, regs);
/* If we need to retry but a fatal signal is pending, handle the
* signal first. We do not need to release the mmap_lock because