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| author |   Trond Myklebust <trondmy@gmail.com> | 2019-04-07 13:58:44 -0400 |
|---|---|---|
| committer |   Anna Schumaker <Anna.Schumaker@Netapp.com> | 2019-04-25 14:18:12 -0400 |
| commit | ae67bd3821bb0a54d97e7883d211196637d487a9 (patch) | |
| tree | 351a54fd10a71f6c76d5e8d8a8ce323c9252192e /net/sunrpc/xprt.c | |
| parent | Linux 5.1-rc6 (diff) | |
| download | linux-dev-ae67bd3821bb0a54d97e7883d211196637d487a9.tar.xz linux-dev-ae67bd3821bb0a54d97e7883d211196637d487a9.zip | |
SUNRPC: Fix up task signalling
The RPC_TASK_KILLED flag should really not be set from another context
because it can clobber data in the struct task when task->tk_flags is
changed non-atomically.
Let's therefore swap out RPC_TASK_KILLED with an atomic flag, and add
a function to set that flag and safely wake up the task.
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
Diffstat (limited to 'net/sunrpc/xprt.c')
| -rw-r--r-- | net/sunrpc/xprt.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/net/sunrpc/xprt.c b/net/sunrpc/xprt.c index d7117d241460..3a4156cb0134 100644 --- a/net/sunrpc/xprt.c +++ b/net/sunrpc/xprt.c @@ -1337,6 +1337,10 @@ xprt_request_transmit(struct rpc_rqst *req, struct rpc_task *snd_task) if (status < 0) goto out_dequeue; } + if (RPC_SIGNALLED(task)) { + status = -ERESTARTSYS; + goto out_dequeue; + } } /* |