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authorKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>2013-05-14 13:56:42 -0400
committerKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>2013-05-15 10:27:50 -0400
commit37d46e152e4c71cd772085912f1c7bf06839f739 (patch)
treeee31e42aca07640b538385c9b6b2acce315c5716 /drivers/xen/tmem.c
parented4f346a008edda8ee08ffcdc642691847636954 (diff)
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xen/tmem: Don't use self[ballooning|shrinking] if frontswap is off.
There is no point. We would just squeeze the guest to put more and more pages in the swap disk without any purpose. The only time it makes sense to use the selfballooning and shrinking is when frontswap is being utilized. Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Diffstat (limited to 'drivers/xen/tmem.c')
-rw-r--r--drivers/xen/tmem.c8
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/xen/tmem.c b/drivers/xen/tmem.c
index c1df0ff89878..18e8bd8fa947 100644
--- a/drivers/xen/tmem.c
+++ b/drivers/xen/tmem.c
@@ -403,6 +403,14 @@ static int xen_tmem_init(void)
}
#endif
#ifdef CONFIG_XEN_SELFBALLOONING
+ /*
+ * There is no point of driving pages to the swap system if they
+ * aren't going anywhere in tmem universe.
+ */
+ if (!frontswap) {
+ selfshrinking = false;
+ selfballooning = false;
+ }
xen_selfballoon_init(selfballooning, selfshrinking);
#endif
return 0;