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Subject[PATCH] mm, page_alloc: reset the zone->watermark_boost early
Date
Updating the zone watermarks by any means, like extra_free_kbytes,
min_free_kbytes, water_mark_scale_factor e.t.c, when watermark_boost is
set will result into the higher low and high watermarks than the user
asks. This can be avoided by resetting the zone->watermark_boost to zero
early.

Signed-off-by: Charan Teja Reddy <charante@codeaurora.org>
---
mm/page_alloc.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 1b265b09..822e262 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -7746,9 +7746,9 @@ static void __setup_per_zone_wmarks(void)
mult_frac(zone_managed_pages(zone),
watermark_scale_factor, 10000));

+ zone->watermark_boost = 0;
zone->_watermark[WMARK_LOW] = min_wmark_pages(zone) + tmp;
zone->_watermark[WMARK_HIGH] = min_wmark_pages(zone) + tmp * 2;
- zone->watermark_boost = 0;

spin_unlock_irqrestore(&zone->lock, flags);
}
--
QUALCOMM INDIA, on behalf of Qualcomm Innovation Center, Inc. is a
member of the Code Aurora Forum, hosted by The Linux Foundation
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