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| author | Trond Myklebust | 2013-03-25 16:23:40 +0100 |
|---|---|---|
| committer | Trond Myklebust | 2013-03-25 16:23:40 +0100 |
| commit | 1166fde6a923c30f4351515b6a9a1efc513e7d00 (patch) | |
| tree | c324a24baa26658651d2e1ecbf2771da569ff38b /net/sunrpc/xprtsock.c | |
| parent | NFSv4.1: Add a helper pnfs_commit_and_return_layout (diff) | |
| download | kernel-qcow2-linux-1166fde6a923c30f4351515b6a9a1efc513e7d00.tar.gz kernel-qcow2-linux-1166fde6a923c30f4351515b6a9a1efc513e7d00.tar.xz kernel-qcow2-linux-1166fde6a923c30f4351515b6a9a1efc513e7d00.zip | |
SUNRPC: Add barriers to ensure read ordering in rpc_wake_up_task_queue_locked
We need to be careful when testing task->tk_waitqueue in
rpc_wake_up_task_queue_locked, because it can be changed while we
are holding the queue->lock.
By adding appropriate memory barriers, we can ensure that it is safe to
test task->tk_waitqueue for equality if the RPC_TASK_QUEUED bit is set.
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Cc: stable@vger.kernel.org
Diffstat (limited to 'net/sunrpc/xprtsock.c')
0 files changed, 0 insertions, 0 deletions