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| author | Chuck Lever <chuck.lever@oracle.com> | 2015-02-13 13:08:25 -0500 |
|---|---|---|
| committer | Trond Myklebust <trond.myklebust@primarydata.com> | 2015-02-13 17:41:10 -0500 |
| commit | 813b00d63f6ca1ed40a2f4f9c034d59bc424025e (patch) | |
| tree | fb2f589f7ddb03480ded4b4640124ae1d83823fd | |
| parent | 54d7e72a758609da5936d7452320d799cfc6a25c (diff) | |
| download | linux-813b00d63f6ca1ed40a2f4f9c034d59bc424025e.tar.bz2 | |
SUNRPC: Always manipulate rpc_rqst::rq_bc_pa_list under xprt->bc_pa_lock
Other code that accesses rq_bc_pa_list holds xprt->bc_pa_lock.
xprt_complete_bc_request() should do the same.
Fixes: 2ea24497a1b3 ("SUNRPC: RPC callbacks may be split . . .")
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
| -rw-r--r-- | net/sunrpc/backchannel_rqst.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/net/sunrpc/backchannel_rqst.c b/net/sunrpc/backchannel_rqst.c index 651f49ab601f..9dd0ea8db463 100644 --- a/net/sunrpc/backchannel_rqst.c +++ b/net/sunrpc/backchannel_rqst.c @@ -309,12 +309,15 @@ void xprt_complete_bc_request(struct rpc_rqst *req, uint32_t copied) struct rpc_xprt *xprt = req->rq_xprt; struct svc_serv *bc_serv = xprt->bc_serv; + spin_lock(&xprt->bc_pa_lock); + list_del(&req->rq_bc_pa_list); + spin_unlock(&xprt->bc_pa_lock); + req->rq_private_buf.len = copied; set_bit(RPC_BC_PA_IN_USE, &req->rq_bc_pa_state); dprintk("RPC: add callback request to list\n"); spin_lock(&bc_serv->sv_cb_lock); - list_del(&req->rq_bc_pa_list); list_add(&req->rq_bc_list, &bc_serv->sv_cb_list); wake_up(&bc_serv->sv_cb_waitq); spin_unlock(&bc_serv->sv_cb_lock); |