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| author | Trond Myklebust <[email protected]> | 2013-05-22 16:57:24 +0000 |
|---|---|---|
| committer | Trond Myklebust <[email protected]> | 2013-05-22 18:55:32 +0000 |
| commit | a3c3cac5d31879cd9ae2de7874dc6544ca704aec (patch) | |
| tree | e6d14d14aaed37a5bc28a8a6ebd952a7a42f9aa6 /tools/perf/util/scripting-engines/trace-event-perl.c | |
| parent | NFSv4.1 Fix a pNFS session draining deadlock (diff) | |
| download | kernel-a3c3cac5d31879cd9ae2de7874dc6544ca704aec.tar.gz kernel-a3c3cac5d31879cd9ae2de7874dc6544ca704aec.zip | |
SUNRPC: Prevent an rpc_task wakeup race
The lockless RPC_IS_QUEUED() test in __rpc_execute means that we need to
be careful about ordering the calls to rpc_test_and_set_running(task) and
rpc_clear_queued(task). If we get the order wrong, then we may end up
testing the RPC_TASK_RUNNING flag after __rpc_execute() has looped
and changed the state of the rpc_task.
Signed-off-by: Trond Myklebust <[email protected]>
Cc: [email protected]
Diffstat (limited to 'tools/perf/util/scripting-engines/trace-event-perl.c')
0 files changed, 0 insertions, 0 deletions