Messages in this thread | | | From | Claudio Imbrenda <> | Subject | [PATCH v3 0/2] AF_VSOCK: Shrink the area influenced by prepare_to_wait | Date | Tue, 22 Mar 2016 17:05:50 +0100 |
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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(-)
-- 1.9.1
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