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[S390] arch/s390/kvm: Use GFP_ATOMIC when a lock is held 

The containing function is called from several places.  At one of them, in
the function __sigp_stop, the spin lock &fi->lock is held.

The semantic patch that makes this change is as follows:
(http://coccinelle.lip6.fr/)

// <smpl>
@gfp exists@
identifier fn;
position p;
@@

fn(...) {
... when != spin_unlock
    when any
  GFP_KERNEL@p
 ... when any
}

@locked@
identifier gfp.fn;
@@

spin_lock(...)
... when != spin_unlock
fn(...)

@depends on locked@
position gfp.p;
@@

- GFP_KERNEL@p
+ GFP_ATOMIC
// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>
Acked-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
This commit is contained in:
Julia Lawall 2010-06-08 18:58:11 +02:00 committed by Martin Schwidefsky
parent 3164a3cbf8
commit 9940fa80ce
1 changed files with 1 additions and 1 deletions
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2
arch/s390/kvm/sigp.c
View File

@ -113,7 +113,7 @@ static int __inject_sigp_stop(struct kvm_s390_local_interrupt *li, int action)
{
struct kvm_s390_interrupt_info *inti;
inti = kzalloc(sizeof(*inti), GFP_KERNEL);
inti = kzalloc(sizeof(*inti), GFP_ATOMIC);
if (!inti)
return -ENOMEM;
inti->type = KVM_S390_SIGP_STOP;