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authorLogan Gunthorpe <logang@deltatee.com>2018-12-14 14:16:53 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2018-12-14 15:05:45 -0800
commitd1402fc708e4c355813e49df6d15bc3466ba5114 (patch)
treefab18217bc25d21ed1a1b507cdf427d1c69b5db4 /Documentation/spi
parent5b5260902af4cf7d2b8da06ba395a722f6d490fa (diff)
mm: introduce common STRUCT_PAGE_MAX_SHIFT define
This define is used by arm64 to calculate the size of the vmemmap region. It is defined as the log2 of the upper bound on the size of a struct page. We move it into mm_types.h so it can be defined properly instead of set and checked with a build bug. This also allows us to use the same define for riscv. Link: http://lkml.kernel.org/r/20181107205433.3875-2-logang@deltatee.com Signed-off-by: Logan Gunthorpe <logang@deltatee.com> Acked-by: Will Deacon <will.deacon@arm.com> Acked-by: Andrew Morton <akpm@linux-foundation.org> Acked-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Acked-by: Catalin Marinas <catalin.marinas@arm.com> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Christoph Hellwig <hch@lst.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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