Messages in this thread Patch in this message | | | Date | Fri, 08 Oct 2004 12:46:19 +1000 | From | Nick Piggin <> | Subject | Re: kswapd in tight loop 2.6.9-rc3-bk-recent |
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Andrew Morton wrote:
>Chris Wright <chrisw@osdl.org> wrote: > >>(whereas I could get the mainline code, and the >> one-liner to spin right off). >> > >How? (up to and including .config please). > > >
Ah, free_pages <= pages_high, ie. 0 <= 0, which is true; commence spinning.
How's this go?
Signed-off-by: Nick Piggin <nickpiggin@yahoo.com.au>
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linux-2.6-npiggin/mm/vmscan.c | 6 +++--- 1 files changed, 3 insertions(+), 3 deletions(-)
diff -puN mm/vmscan.c~vm-fix-empty-zones mm/vmscan.c --- linux-2.6/mm/vmscan.c~vm-fix-empty-zones 2004-10-08 12:44:14.000000000 +1000 +++ linux-2.6-npiggin/mm/vmscan.c 2004-10-08 12:44:48.000000000 +1000 @@ -1003,7 +1003,7 @@ static int balance_pgdat(pg_data_t *pgda priority != DEF_PRIORITY) continue; - if (zone->free_pages <= zone->pages_high) { + if (zone->free_pages < zone->pages_high) { end_zone = i; goto scan; } @@ -1035,7 +1035,7 @@ scan: continue; if (nr_pages == 0) { /* Not software suspend */ - if (zone->free_pages <= zone->pages_high) + if (zone->free_pages < zone->pages_high) all_zones_ok = 0; } zone->temp_priority = priority; @@ -1142,7 +1142,7 @@ static int kswapd(void *p) */ void wakeup_kswapd(struct zone *zone) { - if (zone->free_pages > zone->pages_low) + if (zone->free_pages >= zone->pages_low) return; if (!waitqueue_active(&zone->zone_pgdat->kswapd_wait)) return; _
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