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authorChristoph Lameter <clameter@engr.sgi.com>2006-02-24 13:04:22 -0800
committerLinus Torvalds <torvalds@g5.osdl.org>2006-02-24 14:31:39 -0800
commitd4f7796e9b387e471ab0e8ed4e0c2bd616b3c193 (patch)
treee68b20c1952e3d1bfc6bb51c1b38cd6323e2c771 /mm
parentc04030e16dbea2f7581f82cc6688695927f6ac5b (diff)
downloadlinux-linaro-stable-d4f7796e9b387e471ab0e8ed4e0c2bd616b3c193.tar.gz
[PATCH] vmscan: fix zone_reclaim
- PF_SWAPWRITE needs to be set for RECLAIM_SWAP to be able to write out pages to swap. Currently RECLAIM_SWAP may not do that. - remove setting nr_reclaimed pages after slab reclaim since the slab shrinking code does not use that and the nr_reclaimed pages is just right for the intended follow up action. Signed-off-by: Christoph Lameter <clameter@sgi.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'mm')
-rw-r--r--mm/vmscan.c10
1 files changed, 7 insertions, 3 deletions
diff --git a/mm/vmscan.c b/mm/vmscan.c
index 1838c15ca4fd..b0af7593d01e 100644
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -1908,7 +1908,12 @@ int zone_reclaim(struct zone *zone, gfp_t gfp_mask, unsigned int order)
sc.swap_cluster_max = SWAP_CLUSTER_MAX;
cond_resched();
- p->flags |= PF_MEMALLOC;
+ /*
+ * We need to be able to allocate from the reserves for RECLAIM_SWAP
+ * and we also need to be able to write out pages for RECLAIM_WRITE
+ * and RECLAIM_SWAP.
+ */
+ p->flags |= PF_MEMALLOC | PF_SWAPWRITE;
reclaim_state.reclaimed_slab = 0;
p->reclaim_state = &reclaim_state;
@@ -1932,11 +1937,10 @@ int zone_reclaim(struct zone *zone, gfp_t gfp_mask, unsigned int order)
* a long time.
*/
shrink_slab(sc.nr_scanned, gfp_mask, order);
- sc.nr_reclaimed = 1; /* Avoid getting the off node timeout */
}
p->reclaim_state = NULL;
- current->flags &= ~PF_MEMALLOC;
+ current->flags &= ~(PF_MEMALLOC | PF_SWAPWRITE);
if (sc.nr_reclaimed == 0)
zone->last_unsuccessful_zone_reclaim = jiffies;