diff options
| author | Trond Myklebust <trond.myklebust@primarydata.com> | 2017-08-16 12:09:44 -0400 |
|---|---|---|
| committer | Trond Myklebust <trond.myklebust@primarydata.com> | 2017-08-16 15:10:16 -0400 |
| commit | c89091c88db768e3d28992023ca2cff6636c402b (patch) | |
| tree | 9fe11fd3840b6b4b5e4f9f554973b34f187a73e5 | |
| parent | 729749bb8da186e68d97d1b0439f0b1e0059c41d (diff) | |
SUNRPC: Don't hold the transport lock when receiving backchannel data
The backchannel request has no associated task, so it is going nowhere
until we call xprt_complete_bc_request().
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
| -rw-r--r-- | net/sunrpc/backchannel_rqst.c | 4 | ||||
| -rw-r--r-- | net/sunrpc/xprtsock.c | 5 |
2 files changed, 3 insertions, 6 deletions
diff --git a/net/sunrpc/backchannel_rqst.c b/net/sunrpc/backchannel_rqst.c index ac701c28f44f..c2c68a15b59d 100644 --- a/net/sunrpc/backchannel_rqst.c +++ b/net/sunrpc/backchannel_rqst.c @@ -171,10 +171,10 @@ int xprt_setup_bc(struct rpc_xprt *xprt, unsigned int min_reqs) /* * Add the temporary list to the backchannel preallocation list */ - spin_lock_bh(&xprt->bc_pa_lock); + spin_lock(&xprt->bc_pa_lock); list_splice(&tmp_list, &xprt->bc_pa_list); xprt_inc_alloc_count(xprt, min_reqs); - spin_unlock_bh(&xprt->bc_pa_lock); + spin_unlock(&xprt->bc_pa_lock); dprintk("RPC: setup backchannel transport done\n"); return 0; diff --git a/net/sunrpc/xprtsock.c b/net/sunrpc/xprtsock.c index 04dbc7027712..a2312f14beb4 100644 --- a/net/sunrpc/xprtsock.c +++ b/net/sunrpc/xprtsock.c @@ -1389,11 +1389,9 @@ static int xs_tcp_read_callback(struct rpc_xprt *xprt, container_of(xprt, struct sock_xprt, xprt); struct rpc_rqst *req; - /* Look up and lock the request corresponding to the given XID */ - spin_lock_bh(&xprt->transport_lock); + /* Look up the request corresponding to the given XID */ req = xprt_lookup_bc_request(xprt, transport->tcp_xid); if (req == NULL) { - spin_unlock_bh(&xprt->transport_lock); printk(KERN_WARNING "Callback slot table overflowed\n"); xprt_force_disconnect(xprt); return -1; @@ -1404,7 +1402,6 @@ static int xs_tcp_read_callback(struct rpc_xprt *xprt, if (!(transport->tcp_flags & TCP_RCV_COPY_DATA)) xprt_complete_bc_request(req, transport->tcp_copied); - spin_unlock_bh(&xprt->transport_lock); return 0; } |