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[S390] appldata: avoid deadlock with appldata_mem
authorGerald Schaefer <gerald.schaefer@de.ibm.com>
Thu, 23 Apr 2009 11:58:07 +0000 (13:58 +0200)
committerMartin Schwidefsky <schwidefsky@de.ibm.com>
Thu, 23 Apr 2009 11:58:17 +0000 (13:58 +0200)
commitb1ad171efa089ae26aba750d747d8149a4f860d5
treeaecfd29ad345e2bc288c6e4ea046f7d559c87270tree | snapshot
parent3bd5f3ef290627efa3c219fa21a82eea90bc4cb0commit | diff
[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>
arch/s390/appldata/appldata_base.c diff | blob | blame | history
arch/s390/appldata/appldata_mem.c diff | blob | blame | history
Mirror https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git