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-rw-r--r--arch/s390/mm/pgtable.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/s390/mm/pgtable.c b/arch/s390/mm/pgtable.c
index 301c84d3b542..dc2269f1821c 100644
--- a/arch/s390/mm/pgtable.c
+++ b/arch/s390/mm/pgtable.c
@@ -267,7 +267,10 @@ static int gmap_alloc_table(struct gmap *gmap,
struct page *page;
unsigned long *new;
+ /* since we dont free the gmap table until gmap_free we can unlock */
+ spin_unlock(&gmap->mm->page_table_lock);
page = alloc_pages(GFP_KERNEL, ALLOC_ORDER);
+ spin_lock(&gmap->mm->page_table_lock);
if (!page)
return -ENOMEM;
new = (unsigned long *) page_to_phys(page);
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