[S390] lockless get_user_pages_fast()
Implement get_user_pages_fast without locking in the fastpath on s390.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
diff --git a/arch/s390/include/asm/tlb.h b/arch/s390/include/asm/tlb.h
index fd1c00d..f1f644f 100644
--- a/arch/s390/include/asm/tlb.h
+++ b/arch/s390/include/asm/tlb.h
@@ -64,10 +64,9 @@
if (!tlb->fullmm && (tlb->nr_ptes > 0 || tlb->nr_pxds < TLB_NR_PTRS))
__tlb_flush_mm(tlb->mm);
while (tlb->nr_ptes > 0)
- pte_free(tlb->mm, tlb->array[--tlb->nr_ptes]);
+ page_table_free_rcu(tlb->mm, tlb->array[--tlb->nr_ptes]);
while (tlb->nr_pxds < TLB_NR_PTRS)
- /* pgd_free frees the pointer as region or segment table */
- pgd_free(tlb->mm, tlb->array[tlb->nr_pxds++]);
+ crst_table_free_rcu(tlb->mm, tlb->array[tlb->nr_pxds++]);
}
static inline void tlb_finish_mmu(struct mmu_gather *tlb,
@@ -75,6 +74,8 @@
{
tlb_flush_mmu(tlb, start, end);
+ rcu_table_freelist_finish();
+
/* keep the page table cache within bounds */
check_pgt_cache();
@@ -103,7 +104,7 @@
if (tlb->nr_ptes >= tlb->nr_pxds)
tlb_flush_mmu(tlb, 0, 0);
} else
- pte_free(tlb->mm, pte);
+ page_table_free(tlb->mm, (unsigned long *) pte);
}
/*
@@ -124,7 +125,7 @@
if (tlb->nr_ptes >= tlb->nr_pxds)
tlb_flush_mmu(tlb, 0, 0);
} else
- pmd_free(tlb->mm, pmd);
+ crst_table_free(tlb->mm, (unsigned long *) pmd);
#endif
}
@@ -146,7 +147,7 @@
if (tlb->nr_ptes >= tlb->nr_pxds)
tlb_flush_mmu(tlb, 0, 0);
} else
- pud_free(tlb->mm, pud);
+ crst_table_free(tlb->mm, (unsigned long *) pud);
#endif
}