diff options
| author | Julian Wiedmann <jwi@linux.ibm.com> | 2018-07-19 12:43:48 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-09-26 08:35:06 +0200 |
| commit | 29162495129d39080d21069364f3eb9919509a9a (patch) | |
| tree | 0931b8ccd56ecb9e5fda8af0134ef5603b238a42 /tools/perf/scripts/python | |
| parent | 4f3381ab8af23acc958828795477c7f8929e8925 (diff) | |
s390/qeth: fix race in used-buffer accounting
[ Upstream commit a702349a4099cd5a7bab0904689d8e0bf8dcd622 ]
By updating q->used_buffers only _after_ do_QDIO() has completed, there
is a potential race against the buffer's TX completion. In the unlikely
case that the TX completion path wins, qeth_qdio_output_handler() would
decrement the counter before qeth_flush_buffers() even incremented it.
Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'tools/perf/scripts/python')
0 files changed, 0 insertions, 0 deletions