tree aecfd29ad345e2bc288c6e4ea046f7d559c87270
parent 3bd5f3ef290627efa3c219fa21a82eea90bc4cb0
author Gerald Schaefer <gerald.schaefer@de.ibm.com> 1240487887 +0200
committer Martin Schwidefsky <schwidefsky@de.ibm.com> 1240487897 +0200

[S390] appldata: avoid deadlock with appldata_mem

The appldata_ops callbacks are called with a spin_lock held. But the
appldata_mem callback then calls all_vm_events(), which calls
get_online_cpus(), which might sleep. This possible deadlock is fixed
by using a mutex instead of a spin_lock.

Signed-off-by: Gerald Schaefer <gerald.schaefer@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>