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authordann frazier <dannf@hp.com>2008-11-26 18:32:27 -0500
committerDavid S. Miller <davem@davemloft.net>2008-11-26 18:32:27 -0500
commit5f23b734963ec7eaa3ebcd9050da0c9b7d143dd3 (patch)
treef82c2265540dd5d32d64f08976cd9b6216842544 /virt/kvm/coalesced_mmio.c
parentefbbced361f3ff4ff9e85310ccff894185c4d904 (diff)
net: Fix soft lockups/OOM issues w/ unix garbage collector
This is an implementation of David Miller's suggested fix in: https://bugzilla.redhat.com/show_bug.cgi?id=470201 It has been updated to use wait_event() instead of wait_event_interruptible(). Paraphrasing the description from the above report, it makes sendmsg() block while UNIX garbage collection is in progress. This avoids a situation where child processes continue to queue new FDs over a AF_UNIX socket to a parent which is in the exit path and running garbage collection on these FDs. This contention can result in soft lockups and oom-killing of unrelated processes. Signed-off-by: dann frazier <dannf@hp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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