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| author | KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> | 2010-01-16 02:01:25 +0100 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2010-01-16 21:15:39 +0100 |
| commit | de3fab39348dff18c69a0cd04efee9c276a02f51 (patch) | |
| tree | 1fc5a20da15541e23d02c33ae0bb574fb1f2e40f /mm/mmzone.c | |
| parent | smp_call_function_any(): pass the node value to cpumask_of_node() (diff) | |
| download | linux-de3fab39348dff18c69a0cd04efee9c276a02f51.tar.xz linux-de3fab39348dff18c69a0cd04efee9c276a02f51.zip | |
vmscan: kswapd: don't retry balance_pgdat() if all zones are unreclaimable
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 <kosaki.motohiro@jp.fujitsu.com>
Cc: Mel Gorman <mel@csn.ul.ie>
Reported-by: Will Newton <will.newton@gmail.com>
Reviewed-by: Minchan Kim <minchan.kim@gmail.com>
Reviewed-by: Rik van Riel <riel@redhat.com>
Tested-by: Will Newton <will.newton@gmail.com>
Reviewed-by: Wu Fengguang <fengguang.wu@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/mmzone.c')
0 files changed, 0 insertions, 0 deletions