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[PATCH] zone_reclaim: minor fixes

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- If we only reclaim nr_pages then its okay to stay on node.
  Switch from > to >= for the comparison.

- vm_table[] entry for zone_reclaim_mode is a bit screwed up.

- Add empty lines around shrink_zone to show that this is the
  central function to be called.

Signed-off-by: Christoph Lameter <clameter@sgi.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Christoph Lameter 2006-02-01 03:05:29 -08:00 committed by Linus Torvalds
parent 52a8363eae
commit c84db23c6e
2 changed files with 5 additions and 2 deletions
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3
kernel/sysctl.c
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@ -878,7 +878,8 @@ static ctl_table vm_table[] = {
.maxlen = sizeof(zone_reclaim_mode), .maxlen = sizeof(zone_reclaim_mode),
.mode = 0644, .mode = 0644,
.proc_handler = &proc_dointvec, .proc_handler = &proc_dointvec,
.strategy = &zero, .strategy = &sysctl_intvec,
.extra1 = &zero,
}, },
#endif #endif
{ .ctl_name = 0 } { .ctl_name = 0 }

4
mm/vmscan.c
View file

@ -1636,14 +1636,16 @@ int zone_reclaim(struct zone *zone, gfp_t gfp_mask, unsigned int order)
p->flags |= PF_MEMALLOC; p->flags |= PF_MEMALLOC;
reclaim_state.reclaimed_slab = 0; reclaim_state.reclaimed_slab = 0;
p->reclaim_state = &reclaim_state; p->reclaim_state = &reclaim_state;
shrink_zone(zone, &sc); shrink_zone(zone, &sc);
p->reclaim_state = NULL; p->reclaim_state = NULL;
current->flags &= ~PF_MEMALLOC; current->flags &= ~PF_MEMALLOC;
if (sc.nr_reclaimed == 0) if (sc.nr_reclaimed == 0)
zone->last_unsuccessful_zone_reclaim = jiffies; zone->last_unsuccessful_zone_reclaim = jiffies;
return sc.nr_reclaimed > nr_pages; return sc.nr_reclaimed >= nr_pages;
} }
#endif #endif