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s390/mm: fixing calls of pte_unmap_unlock 

pte_unmap works on page table entry pointers, derefencing should be avoided.
As on s390 pte_unmap is a NOP, this is more a cleanup if we want to supply
later such function.

Signed-off-by: Dominik Dingel <dingel@linux.vnet.ibm.com>
Reviewed-by: Thomas Huth <thuth@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
This commit is contained in:
Dominik Dingel 2014-10-06 16:34:44 +02:00 committed by Martin Schwidefsky
parent c9eeb7b813
commit 66e9bbdb3d
1 changed files with 3 additions and 3 deletions
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6
arch/s390/mm/pgtable.c
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@ -656,7 +656,7 @@ void __gmap_zap(struct gmap *gmap, unsigned long gaddr)
}
pgste_set_unlock(ptep, pgste);
out_pte:
pte_unmap_unlock(*ptep, ptl);
pte_unmap_unlock(ptep, ptl);
}
EXPORT_SYMBOL_GPL(__gmap_zap);
@ -943,7 +943,7 @@ retry:
}
if (!(pte_val(*ptep) & _PAGE_INVALID) &&
(pte_val(*ptep) & _PAGE_PROTECT)) {
pte_unmap_unlock(*ptep, ptl);
pte_unmap_unlock(ptep, ptl);
if (fixup_user_fault(current, mm, addr, FAULT_FLAG_WRITE)) {
up_read(&mm->mmap_sem);
return -EFAULT;
@ -974,7 +974,7 @@ retry:
pgste_val(new) |= PGSTE_UC_BIT;
pgste_set_unlock(ptep, new);
pte_unmap_unlock(*ptep, ptl);
pte_unmap_unlock(ptep, ptl);
up_read(&mm->mmap_sem);
return 0;
}