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| author | Trond Myklebust <Trond.Myklebust@netapp.com> | 2013-05-22 12:57:24 -0400 |
|---|---|---|
| committer | Trond Myklebust <Trond.Myklebust@netapp.com> | 2013-05-22 14:55:32 -0400 |
| commit | a3c3cac5d31879cd9ae2de7874dc6544ca704aec (patch) | |
| tree | e6d14d14aaed37a5bc28a8a6ebd952a7a42f9aa6 /Documentation/lockstat.txt | |
| parent | 774d5f14ee1ecac55f42a84ff35eb00b896b00b6 (diff) | |
| download | op-kernel-dev-a3c3cac5d31879cd9ae2de7874dc6544ca704aec.zip op-kernel-dev-a3c3cac5d31879cd9ae2de7874dc6544ca704aec.tar.gz | |
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 <Trond.Myklebust@netapp.com>
Cc: stable@vger.kernel.org
Diffstat (limited to 'Documentation/lockstat.txt')
0 files changed, 0 insertions, 0 deletions
