diff options
| author | Claudio Imbrenda <imbrenda@linux.vnet.ibm.com> | 2016-03-22 17:05:51 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2016-03-22 16:18:41 -0400 |
| commit | 6f57e56a1527d58264ae126eff94fdac067744fc (patch) | |
| tree | bc5604c18b8e1ea7f9e68c9d22a39d538acf3402 /Documentation/adding-syscalls.txt | |
| parent | 9a0384c020b055a555500906be8ac314c92f3998 (diff) | |
Revert "vsock: Fix blocking ops call in prepare_to_wait"
This reverts commit 5988818008257ca42010d6b43a3e0e48afec9898 ("vsock: Fix
blocking ops call in prepare_to_wait")
The commit reverted with this patch caused us to potentially 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, we will miss it. ( A description of the problem can be
found here: http://www.makelinux.net/ldd3/chp-6-sect-2 ).
By reverting the patch, the behaviour is still incorrect (since we
shouldn't sleep between the prepare_to_wait and the schedule) but at least
it will not miss wakeups.
The next patch in the series actually fixes the behaviour.
Signed-off-by: Claudio Imbrenda <imbrenda@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'Documentation/adding-syscalls.txt')
0 files changed, 0 insertions, 0 deletions