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authorVlastimil Babka <[email protected]>2016-02-05 15:36:41 -0800
committerLinus Torvalds <[email protected]>2016-02-05 18:10:40 -0800
commit080fe2068e1c7f19f565b30b78baf78edf16a980 (patch)
treed2af16ed6fe7040c1de9a658552753e1dfbdad64 /net/lapb/lapb_iface.c
parentb4330afbed0cdceeba33c4945158c55771047e81 (diff)
mm, hugetlb: don't require CMA for runtime gigantic pages
Commit 944d9fec8d7a ("hugetlb: add support for gigantic page allocation at runtime") has added the runtime gigantic page allocation via alloc_contig_range(), making this support available only when CONFIG_CMA is enabled. Because it doesn't depend on MIGRATE_CMA pageblocks and the associated infrastructure, it is possible with few simple adjustments to require only CONFIG_MEMORY_ISOLATION instead of full CONFIG_CMA. After this patch, alloc_contig_range() and related functions are available and used for gigantic pages with just CONFIG_MEMORY_ISOLATION enabled. Note CONFIG_CMA selects CONFIG_MEMORY_ISOLATION. This allows supporting runtime gigantic pages without the CMA-specific checks in page allocator fastpaths. Signed-off-by: Vlastimil Babka <[email protected]> Cc: Luiz Capitulino <[email protected]> Cc: Kirill A. Shutemov <[email protected]> Cc: Zhang Yanfei <[email protected]> Cc: Yasuaki Ishimatsu <[email protected]> Cc: Joonsoo Kim <[email protected]> Cc: Naoya Horiguchi <[email protected]> Cc: Mel Gorman <[email protected]> Cc: Davidlohr Bueso <[email protected]> Cc: Hillf Danton <[email protected]> Cc: Mike Kravetz <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
Diffstat (limited to 'net/lapb/lapb_iface.c')
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