tree 1406328bddda29edb7548dd9a43d6168cd8acc1a
parent e0f9f8586a0b21fb3c7a4ead3804008d57dfdef7
author Herbert Xu <herbert@gondor.apana.org.au> 1119160602 -0700
committer David S. Miller <davem@davemloft.net> 1119160602 -0700

[SCTP]: Replace spin_lock_irqsave with spin_lock_bh

This patch replaces the spin_lock_irqsave call on the receive queue
lock in SCTP with spin_lock_bh.  Despite the proliferation of
spin_lock_irqsave calls in this stack, it is only entered from the
IPv4/IPv6 stack and user space.  That is, it is never entered from
hardirq context.

The call in question is only called from recvmsg which means that
IRQs aren't disabled.  Therefore it is safe to replace it with
spin_lock_bh.
 
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>