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authorchas williams - CONTRACTOR <chas@cmf.nrl.navy.mil>2014-08-12 14:12:26 +0200
committerDavid S. Miller <davem@davemloft.net>2014-08-14 05:04:46 +0200
commitde713b57947a7a1b9cc605c0296ee14065cd86b6 (patch)
treed47fa60ae55956e23ff7c1d57c32bdcafd3f65f8 /net/dns_resolver
parentmyri10ge: check for DMA mapping errors (diff)
downloadlinux-de713b57947a7a1b9cc605c0296ee14065cd86b6.tar.xz
linux-de713b57947a7a1b9cc605c0296ee14065cd86b6.zip
atm/svc: Fix blocking in wait loop
One should not call blocking primitives inside a wait loop, since both require task_struct::state to sleep, so the inner will destroy the outer state. sigd_enq() will possibly sleep for alloc_skb(). Move sigd_enq() before prepare_to_wait() to avoid sleeping while waiting interruptibly. You do not actually need to call sigd_enq() after the initial prepare_to_wait() because we test the termination condition before calling schedule(). Based on suggestions from Peter Zijlstra. Signed-off-by: Chas Williams <chas@cmf.n4rl.navy.mil> Acked-by: Peter Zijlstra <peterz@infradead.org> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/dns_resolver')
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