evie/android_kernel_oneplus_msm8998
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mm: Add is_cma_pageblock definition

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Bring back the is_cma_pageblock definition for determining if a
page is CMA or not.

Change-Id: I39fd546e22e240b752244832c79514f109c8e84b
Signed-off-by: Laura Abbott <lauraa@codeaurora.org>
This commit is contained in:
Laura Abbott 2012-11-27 10:17:24 -08:00 • committed by David Keitel
parent 8918861861
commit e48a20a27c
2 changed files with 7 additions and 0 deletions
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2
include/linux/mmzone.h
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@ -64,8 +64,10 @@ enum {
};
#ifdef CONFIG_CMA
bool is_cma_pageblock(struct page *page);
# define is_migrate_cma(migratetype) unlikely((migratetype) == MIGRATE_CMA)
#else
# define is_cma_pageblock(page) false
# define is_migrate_cma(migratetype) false
#endif

5
mm/page_alloc.c
View file

@ -1265,6 +1265,11 @@ void __init page_alloc_init_late(void)
#endif /* CONFIG_DEFERRED_STRUCT_PAGE_INIT */
#ifdef CONFIG_CMA
bool is_cma_pageblock(struct page *page)
{
return get_pageblock_migratetype(page) == MIGRATE_CMA;
}
/* Free whole pageblock and set its migration type to MIGRATE_CMA. */
void __init init_cma_reserved_pageblock(struct page *page)
{