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-rw-r--r--arch/s390/mm/pgtable.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/s390/mm/pgtable.c b/arch/s390/mm/pgtable.c
index 0c719c61972e..e1850c28cd68 100644
--- a/arch/s390/mm/pgtable.c
+++ b/arch/s390/mm/pgtable.c
@@ -336,7 +336,8 @@ void page_table_free(struct mm_struct *mm, unsigned long *table)
336 page->flags ^= bits; 336 page->flags ^= bits;
337 if (page->flags & FRAG_MASK) { 337 if (page->flags & FRAG_MASK) {
338 /* Page now has some free pgtable fragments. */ 338 /* Page now has some free pgtable fragments. */
339 list_move(&page->lru, &mm->context.pgtable_list); 339 if (!list_empty(&page->lru))
340 list_move(&page->lru, &mm->context.pgtable_list);
340 page = NULL; 341 page = NULL;
341 } else 342 } else
342 /* All fragments of the 4K page have been freed. */ 343 /* All fragments of the 4K page have been freed. */