[PATCH v3 0/2] AF_VSOCK: Shrink the area influenced by prepare_to_wait

[Claudio Imbrenda]

This patchset applies on net-next.

I think I found a problem with the patch submitted by Laura Abbott
( https://lkml.org/lkml/2016/2/4/711 ): we might miss wakeups.
Since the condition is not checked between the prepare_to_wait and the
schedule(), if a wakeup happens after the condition is checked but before
the sleep happens, and we miss it. ( A description of the problem can be
found here: http://www.makelinux.net/ldd3/chp-6-sect-2 ).

The first patch reverts the previous broken patch, while the second patch
properly fixes the sleep-while-waiting issue.


Claudio Imbrenda (2):
  Revert "vsock: Fix blocking ops call in prepare_to_wait"
  AF_VSOCK: Shrink the area influenced by prepare_to_wait

 net/vmw_vsock/af_vsock.c | 155 ++++++++++++++++++++++++++---------------------
 1 file changed, 87 insertions(+), 68 deletions(-)

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1.9.1