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-rw-r--r--mm/internal.h7
1 files changed, 6 insertions, 1 deletions
diff --git a/mm/internal.h b/mm/internal.h
index a25424a..e067984 100644
--- a/mm/internal.h
+++ b/mm/internal.h
@@ -201,7 +201,12 @@ static inline int mlocked_vma_newpage(struct vm_area_struct *vma,
return 0;
if (!TestSetPageMlocked(page)) {
- mod_zone_page_state(page_zone(page), NR_MLOCK,
+ /*
+ * We use the irq-unsafe __mod_zone_page_stat because this
+ * counter is not modified from interrupt context, and the pte
+ * lock is held(spinlock), which implies preemption disabled.
+ */
+ __mod_zone_page_state(page_zone(page), NR_MLOCK,
hpage_nr_pages(page));
count_vm_event(UNEVICTABLE_PGMLOCKED);
}
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