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[PATCH] vmscan: no zone_reclaim if PF_MALLOC is set

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If the process has already set PF_MALLOC and is already using
current->reclaim_state then do not try to reclaim memory from the zone.
This is set by kswapd and/or synchrononous global reclaim which will not
take it lightly if we zap the reclaim_state.

Signed-off-by: Christoph Lameter <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Christoph Lameter 2006-03-09 17:33:47 -08:00 • committed by Linus Torvalds
commit a6bf527091
1 changed files with 2 additions and 1 deletions
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3
mm/vmscan.c
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@ -1883,7 +1883,8 @@ int zone_reclaim(struct zone *zone, gfp_t gfp_mask, unsigned int order)
if (!(gfp_mask & __GFP_WAIT) ||
zone->all_unreclaimable ||
atomic_read(&zone->reclaim_in_progress) > 0)
atomic_read(&zone->reclaim_in_progress) > 0 ||
(p->flags & PF_MEMALLOC))
return 0;
node_id = zone->zone_pgdat->node_id;