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authorJoonsoo Kim <iamjoonsoo.kim@lge.com>2014-08-06 16:05:23 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2014-08-06 18:01:16 -0700
commite0bdb37d95dd44086159607e571fd70f6b62dc2d (patch)
treea5d5fcae8c3050ba074aed430504d2787a1f0c86 /mm/cma.c
parenta15bc0b89e8812d0db297bc771a85812c4fa83c1 (diff)
DMA, CMA: support arbitrary bitmap granularity
PPC KVM's CMA area management requires arbitrary bitmap granularity, since they want to reserve very large memory and manage this region with bitmap that one bit for several pages to reduce management overheads. So support arbitrary bitmap granularity for following generalization. [akpm@linux-foundation.org: s/1/1UL/] Signed-off-by: Joonsoo Kim <iamjoonsoo.kim@lge.com> Acked-by: Michal Nazarewicz <mina86@mina86.com> Acked-by: Zhang Yanfei <zhangyanfei@cn.fujitsu.com> Acked-by: Minchan Kim <minchan@kernel.org> Reviewed-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Cc: Alexander Graf <agraf@suse.de> Cc: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Cc: Gleb Natapov <gleb@kernel.org> Acked-by: Marek Szyprowski <m.szyprowski@samsung.com> Tested-by: Marek Szyprowski <m.szyprowski@samsung.com> Cc: Paolo Bonzini <pbonzini@redhat.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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