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75558ad315
Patch series "Fix confusion around MAX_ORDER". MAX_ORDER currently defined as number of orders page allocator supports: user can ask buddy allocator for page order between 0 and MAX_ORDER-1. This definition is counter-intuitive and lead to number of bugs all over the kernel. Fix the bugs and then change the definition of MAX_ORDER to be inclusive: the range of orders user can ask from buddy allocator is 0..MAX_ORDER now. This patch (of 10): MAX_ORDER is not inclusive: the maximum allocation order buddy allocator can deliver is MAX_ORDER-1. Fix MAX_ORDER usage in tsb_grow(). Link: https://lkml.kernel.org/r/20230315113133.11326-1-kirill.shutemov@linux.intel.com Link: https://lkml.kernel.org/r/20230315113133.11326-2-kirill.shutemov@linux.intel.com Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Reviewed-by: Mike Kravetz <mike.kravetz@oracle.com> Acked-by: Mike Rapoport (IBM) <rppt@kernel.org> Cc: David Miller <davem@davemloft.net> Cc: David Hildenbrand <david@redhat.com> Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Cc: Mel Gorman <mgorman@suse.de> Cc: Vlastimil Babka <vbabka@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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