s390/mm: take the mmap_sem in kvm_s390_shadow_fault()

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Instead of doing it in the caller, let's just take the mmap_sem
in kvm_s390_shadow_fault(). By taking it as read, we allow parallel
faulting on shadow page tables, gmap shadow code is prepared for that.

Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>

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David Hildenbrand 2016-02-02 12:26:00 +01:00 • committed by Christian Borntraeger

parent 0f7f848915

commit e52f8b6112

1 changed files with 15 additions and 17 deletions

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arch/s390/kvm/gaccess.c

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