[PATCH] vm-fix-all_zones_ok (was Re: 2.6.3-mm3)

[Nick Piggin <piggin@cyberone.com.au>]

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Nick Piggin wrote:

>
> Humph. OK you're right.


Aha but you've broken something! Tell me I'm still useful.


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 linux-2.6-npiggin/mm/vmscan.c |    6 ++++--
 1 files changed, 4 insertions(+), 2 deletions(-)

diff -puN mm/vmscan.c~vm-fix-all_zones_ok mm/vmscan.c
--- linux-2.6/mm/vmscan.c~vm-fix-all_zones_ok	2004-02-23 19:44:06.000000000 +1100
+++ linux-2.6-npiggin/mm/vmscan.c	2004-02-23 19:45:10.000000000 +1100
@@ -1008,10 +1008,12 @@ static int balance_pgdat(pg_data_t *pgda
 
 			if (nr_pages)		/* Software suspend */
 				to_reclaim = min(to_free, SWAP_CLUSTER_MAX*8);
-			else			/* Zone balancing */
+			else {			/* Zone balancing */
 				to_reclaim = zone->reclaim_batch;
+				if (zone->pages_high < zone->free_pages)
+					all_zones_ok = 0;
+			}
 
-			all_zones_ok = 0;
 			zone->temp_priority = priority;
 			reclaimed = shrink_zone(zone, GFP_KERNEL,
 					to_reclaim, &nr_scanned, ps, priority);

_