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Documentation: DT: ASoC: add toshiba tc358749x
[firefly-linux-kernel-4.4.55.git]
/
mm
/
vmpressure.c
diff --git
a/mm/vmpressure.c
b/mm/vmpressure.c
index c5afd573d7da79afc814225043319cc66120addf..3fb15c25af873ae0f44b804ed80baeafc1a1e9a6 100644
(file)
--- a/
mm/vmpressure.c
+++ b/
mm/vmpressure.c
@@
-112,8
+112,15
@@
static enum vmpressure_levels vmpressure_calc_level(unsigned long scanned,
unsigned long reclaimed)
{
unsigned long scale = scanned + reclaimed;
unsigned long reclaimed)
{
unsigned long scale = scanned + reclaimed;
- unsigned long pressure;
+ unsigned long pressure
= 0
;
+ /*
+ * reclaimed can be greater than scanned in cases
+ * like THP, where the scanned is 1 and reclaimed
+ * could be 512
+ */
+ if (reclaimed >= scanned)
+ goto out;
/*
* We calculate the ratio (in percents) of how many pages were
* scanned vs. reclaimed in a given time frame (window). Note that
/*
* We calculate the ratio (in percents) of how many pages were
* scanned vs. reclaimed in a given time frame (window). Note that
@@
-124,6
+131,7
@@
static enum vmpressure_levels vmpressure_calc_level(unsigned long scanned,
pressure = scale - (reclaimed * scale / scanned);
pressure = pressure * 100 / scale;
pressure = scale - (reclaimed * scale / scanned);
pressure = pressure * 100 / scale;
+out:
pr_debug("%s: %3lu (s: %lu r: %lu)\n", __func__, pressure,
scanned, reclaimed);
pr_debug("%s: %3lu (s: %lu r: %lu)\n", __func__, pressure,
scanned, reclaimed);