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ARC: mm: do_page_fault refactor #2: remove short lived variable

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Compiler will do this anyways, still..

No functional change.

Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
This commit is contained in:
Vineet Gupta 2019-05-14 16:07:24 -07:00
parent 450e5b6f65
commit 13e2cc1240
1 changed files with 1 additions and 6 deletions
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7
arch/arc/mm/fault.c
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@ -64,23 +64,18 @@ void do_page_fault(unsigned long address, struct pt_regs *regs)
struct task_struct *tsk = current; struct task_struct *tsk = current;
struct mm_struct *mm = tsk->mm; struct mm_struct *mm = tsk->mm;
int si_code = SEGV_MAPERR; int si_code = SEGV_MAPERR;
int ret;
vm_fault_t fault; vm_fault_t fault;
int write = regs->ecr_cause & ECR_C_PROTV_STORE; /* ST/EX */ int write = regs->ecr_cause & ECR_C_PROTV_STORE; /* ST/EX */
unsigned int flags = FAULT_FLAG_ALLOW_RETRY | FAULT_FLAG_KILLABLE; unsigned int flags = FAULT_FLAG_ALLOW_RETRY | FAULT_FLAG_KILLABLE;
/* /*
* We fault-in kernel-space virtual memory on-demand. The
* 'reference' page table is init_mm.pgd.
*
* NOTE! We MUST NOT take any locks for this case. We may * NOTE! We MUST NOT take any locks for this case. We may
* be in an interrupt or a critical region, and should * be in an interrupt or a critical region, and should
* only copy the information from the master page table, * only copy the information from the master page table,
* nothing more. * nothing more.
*/ */
if (address >= VMALLOC_START && !user_mode(regs)) { if (address >= VMALLOC_START && !user_mode(regs)) {
ret = handle_kernel_vaddr_fault(address); if (unlikely(handle_kernel_vaddr_fault(address)))
if (unlikely(ret))
goto no_context; goto no_context;
else else
return; return;