Commit c0580dc2 authored Sep 30, 2019 by Charan Teja Reddy Committed by Chris Goldsworthy Feb 10, 2020

mm: set the watermark_boost before updating the low and high wmarks



Updating the zone watermarks by any means, like extra_free_kbytes,
min_free_kbytes, water_mark_scale_factor, when boost_watermark(zone) is
set can result into the higher water_mark_low|min as the macro
min_wmark_pages returns by adding the zone->watermark_boost.
Set this to Zero early.

Change-Id: I5e3edd1798e46974f3df34ef750f9d08b8ff35f4
Signed-off-by: Charan Teja Reddy <charante@codeaurora.org>
Signed-off-by: Chris Goldsworthy <cgoldswo@codeaurora.org>

parent ed69314e

mm/page_alloc.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -7896,11 +7896,11 @@ 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) +
		low + tmp;
		zone->_watermark[WMARK_HIGH] = min_wmark_pages(zone) +
		low + tmp * 2;
		zone->watermark_boost = 0;

		spin_unlock_irqrestore(&zone->lock, flags);
		}