summaryrefslogtreecommitdiff
path: root/arch/s390/mm/pgtable.c
diff options
context:
space:
mode:
Diffstat (limited to 'arch/s390/mm/pgtable.c')
-rw-r--r--arch/s390/mm/pgtable.c5
1 files changed, 3 insertions, 2 deletions
diff --git a/arch/s390/mm/pgtable.c b/arch/s390/mm/pgtable.c
index 37b8241ec784..f90ad8592b36 100644
--- a/arch/s390/mm/pgtable.c
+++ b/arch/s390/mm/pgtable.c
@@ -1279,6 +1279,7 @@ static unsigned long page_table_realloc_pmd(struct mmu_gather *tlb,
{
unsigned long next, *table, *new;
struct page *page;
+ spinlock_t *ptl;
pmd_t *pmd;
pmd = pmd_offset(pud, addr);
@@ -1296,7 +1297,7 @@ again:
if (!new)
return -ENOMEM;
- spin_lock(&mm->page_table_lock);
+ ptl = pmd_lock(mm, pmd);
if (likely((unsigned long *) pmd_deref(*pmd) == table)) {
/* Nuke pmd entry pointing to the "short" page table */
pmdp_flush_lazy(mm, addr, pmd);
@@ -1310,7 +1311,7 @@ again:
page_table_free_rcu(tlb, table);
new = NULL;
}
- spin_unlock(&mm->page_table_lock);
+ spin_unlock(ptl);
if (new) {
page_table_free_pgste(new);
goto again;