A-Team_Digital_Solutions/android_kernel_motorola_sm6375
Watch
2
0
Fork
You've already forked android_kernel_motorola_sm6375
 0
mirror of https://github.com/BobTheBlinker/android_kernel_motorola_sm6375.git synced 2026-10-28 10:41:38 -04:00
Code Issues Projects Releases Packages Wiki Activity

vmscan: kswapd: don't retry balance_pgdat() if all zones are unreclaimable

Browse source 
Commit f50de2d3 (vmscan: have kswapd sleep for a short interval and double
check it should be asleep) can cause kswapd to enter an infinite loop if
running on a single-CPU system.  If all zones are unreclaimble,
sleeping_prematurely return 1 and kswapd will call balance_pgdat() again.
but it's totally meaningless, balance_pgdat() doesn't anything against
unreclaimable zone!

Signed-off-by: KOSAKI Motohiro <[email protected]>
Cc: Mel Gorman <[email protected]>
Reported-by: Will Newton <[email protected]>
Reviewed-by: Minchan Kim <[email protected]>
Reviewed-by: Rik van Riel <[email protected]>
Tested-by: Will Newton <[email protected]>
Reviewed-by: Wu Fengguang <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
KOSAKI Motohiro 2010-01-15 17:01:25 -08:00 • committed by Linus Torvalds
commit de3fab3934
1 changed files with 3 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

3
mm/vmscan.c
View file

@ -1922,6 +1922,9 @@ static int sleeping_prematurely(pg_data_t *pgdat, int order, long remaining)
if (!populated_zone(zone))
continue;
if (zone_is_all_unreclaimable(zone))
continue;
if (!zone_watermark_ok(zone, order, high_wmark_pages(zone),
0, 0))
return 1;