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H A D | tap.c | ffa423fb Mon Jul 10 12:05:50 CDT 2017 WANG Cong <xiyou.wangcong@gmail.com> tap: convert a mutex to a spinlock
We are not allowed to block on the RCU reader side, so can't just hold the mutex as before. As a quick fix, convert it to a spinlock.
Fixes: d9f1f61c0801 ("tap: Extending tap device create/destroy APIs") Reported-by: Christian Borntraeger <borntraeger@de.ibm.com> Tested-by: Christian Borntraeger <borntraeger@de.ibm.com> Cc: Sainath Grandhi <sainath.grandhi@intel.com> Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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