On 05/26/2016 08:22 AM, js1304@xxxxxxxxx wrote:
From: Joonsoo Kim <iamjoonsoo.kim@xxxxxxx>
Now, all reserved pages for CMA region are belong to the ZONE_CMA
and it only serves for GFP_HIGHUSER_MOVABLE. Therefore, we don't need to
consider ALLOC_CMA at all.
Signed-off-by: Joonsoo Kim <iamjoonsoo.kim@xxxxxxx>
---
mm/internal.h | 3 +--
mm/page_alloc.c | 27 +++------------------------
2 files changed, 4 insertions(+), 26 deletions(-)
[...]
@@ -2833,10 +2827,8 @@ bool __zone_watermark_ok(struct zone *z, unsigned int order, unsigned long mark,
}
#ifdef CONFIG_CMA
- if ((alloc_flags & ALLOC_CMA) &&
- !list_empty(&area->free_list[MIGRATE_CMA])) {
+ if (!list_empty(&area->free_list[MIGRATE_CMA]))
return true;
- }
#endif
Nitpick: it would be more logical to remove the whole block in this
patch, as removing ALLOC_CMA means it's effectively false? Also less churn.
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