[PATCH 3/2] KVM: async_pf: change async_pf_execute() to use get_user_pages(tsk => NULL)

[Oleg Nesterov <oleg@redhat.com>]

async_pf_execute() passes tsk == current to gup(), this is doesn't
hurt but unnecessary and misleading. "tsk" is only used to account
the number of faults and current is the random workqueue thread.

Signed-off-by: Oleg Nesterov <oleg@redhat.com>
---
 virt/kvm/async_pf.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/virt/kvm/async_pf.c b/virt/kvm/async_pf.c
index 0ced4f3..62f4223 100644
--- a/virt/kvm/async_pf.c
+++ b/virt/kvm/async_pf.c
@@ -81,7 +81,7 @@ static void async_pf_execute(struct work_struct *work)
 	might_sleep();
 
 	down_read(&mm->mmap_sem);
-	get_user_pages(current, mm, addr, 1, 1, 0, NULL, NULL);
+	get_user_pages(NULL, mm, addr, 1, 1, 0, NULL, NULL);
 	up_read(&mm->mmap_sem);
 	kvm_async_page_present_sync(vcpu, apf);
 
-- 
1.5.5.1