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authorTakashi Iwai <tiwai@suse.de>2012-09-05 07:17:31 (GMT)
committerTakashi Iwai <tiwai@suse.de>2012-09-05 07:17:31 (GMT)
commit14e42917216ab0859827c2d8024df45a917301b4 (patch)
treeefbea5d1c54387d62a6fd66a21560232cf312fda /arch/x86/kvm/mmu.c
parent292f2b6254c9dbb98def6d3521b07a837545ead0 (diff)
parent4266274836e81575ee82498d84f4bd08ab7a7378 (diff)
downloadlinux-fsl-qoriq-14e42917216ab0859827c2d8024df45a917301b4.tar.xz
Merge branch 'fixes' of git://git.alsa-project.org/alsa-kernel into for-next
Diffstat (limited to 'arch/x86/kvm/mmu.c')
-rw-r--r--arch/x86/kvm/mmu.c13
1 files changed, 9 insertions, 4 deletions
diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c
index 01ca004..7fbd0d2 100644
--- a/arch/x86/kvm/mmu.c
+++ b/arch/x86/kvm/mmu.c
@@ -4113,16 +4113,21 @@ static int mmu_shrink(struct shrinker *shrink, struct shrink_control *sc)
LIST_HEAD(invalid_list);
/*
+ * Never scan more than sc->nr_to_scan VM instances.
+ * Will not hit this condition practically since we do not try
+ * to shrink more than one VM and it is very unlikely to see
+ * !n_used_mmu_pages so many times.
+ */
+ if (!nr_to_scan--)
+ break;
+ /*
* n_used_mmu_pages is accessed without holding kvm->mmu_lock
* here. We may skip a VM instance errorneosly, but we do not
* want to shrink a VM that only started to populate its MMU
* anyway.
*/
- if (kvm->arch.n_used_mmu_pages > 0) {
- if (!nr_to_scan--)
- break;
+ if (!kvm->arch.n_used_mmu_pages)
continue;
- }
idx = srcu_read_lock(&kvm->srcu);
spin_lock(&kvm->mmu_lock);