mm/page_alloc: invert logic for early page initialisation checks

Rename early_page_uninitialised() to early_page_initialised() and invert
its logic to make the code more readable.

Link: https://lkml.kernel.org/r/20230104191805.2535864-1-rppt@kernel.org
Signed-off-by: Mike Rapoport (IBM) <rppt@kernel.org>
Reviewed-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Anshuman Khandual <anshuman.khandual@arm.com>
Acked-by: Mel Gorman <mgorman@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 5668c1a..5514d84 100644 (file)
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -443,15 +443,15 @@ static inline bool deferred_pages_enabled(void)
        return static_branch_unlikely(&deferred_pages);
 }
 
-/* Returns true if the struct page for the pfn is uninitialised */
-static inline bool __meminit early_page_uninitialised(unsigned long pfn)
+/* Returns true if the struct page for the pfn is initialised */
+static inline bool __meminit early_page_initialised(unsigned long pfn)
 {
        int nid = early_pfn_to_nid(pfn);
 
        if (node_online(nid) && pfn >= NODE_DATA(nid)->first_deferred_pfn)
-               return true;
+               return false;
 
-       return false;
+       return true;
 }
 
 /*
@@ -498,9 +498,9 @@ static inline bool deferred_pages_enabled(void)
        return false;
 }
 
-static inline bool early_page_uninitialised(unsigned long pfn)
+static inline bool early_page_initialised(unsigned long pfn)
 {
-       return false;
+       return true;
 }
 
 static inline bool defer_init(int nid, unsigned long pfn, unsigned long end_pfn)
@@ -1643,7 +1643,7 @@ static void __meminit init_reserved_page(unsigned long pfn)
        pg_data_t *pgdat;
        int nid, zid;
 
-       if (!early_page_uninitialised(pfn))
+       if (early_page_initialised(pfn))
                return;
 
        nid = early_pfn_to_nid(pfn);
@@ -1806,7 +1806,7 @@ int __meminit early_pfn_to_nid(unsigned long pfn)
 void __init memblock_free_pages(struct page *page, unsigned long pfn,
                                                        unsigned int order)
 {
-       if (early_page_uninitialised(pfn))
+       if (!early_page_initialised(pfn))
                return;
        if (!kmsan_memblock_free_pages(page, order)) {
                /* KMSAN will take care of these pages. */