diff options
Diffstat (limited to 'arch/s390/mm/pgtable.c')
| -rw-r--r-- | arch/s390/mm/pgtable.c | 5 |
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; |