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-rw-r--r--mm/page_alloc.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index a01baf0454f8..150d4f23b010 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -916,6 +916,9 @@ static inline bool page_expected_state(struct page *page,
#ifdef CONFIG_MEMCG
page->memcg_data |
#endif
+#ifdef CONFIG_PAGE_POOL
+ ((page->pp_magic & ~0x3UL) == PP_SIGNATURE) |
+#endif
(page->flags & check_flags)))
return false;
@@ -942,6 +945,10 @@ static const char *page_bad_reason(struct page *page, unsigned long flags)
if (unlikely(page->memcg_data))
bad_reason = "page still charged to cgroup";
#endif
+#ifdef CONFIG_PAGE_POOL
+ if (unlikely((page->pp_magic & ~0x3UL) == PP_SIGNATURE))
+ bad_reason = "page_pool leak";
+#endif
return bad_reason;
}