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SUNRPC: Don't take transport->lock unnecessarily when taking XPRT_LOCK

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Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
This commit is contained in:
Trond Myklebust 2018-09-07 19:38:55 -04:00
parent adfa71446d
commit bd79bc579c
1 changed files with 5 additions and 2 deletions
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7
net/sunrpc/xprt.c
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@ -298,6 +298,8 @@ static inline int xprt_lock_write(struct rpc_xprt *xprt, struct rpc_task *task)
{
int retval;
if (test_bit(XPRT_LOCKED, &xprt->state) && xprt->snd_task == task)
return 1;
spin_lock_bh(&xprt->transport_lock);
retval = xprt->ops->reserve_xprt(xprt, task);
spin_unlock_bh(&xprt->transport_lock);
@ -375,6 +377,8 @@ EXPORT_SYMBOL_GPL(xprt_release_xprt_cong);
static inline void xprt_release_write(struct rpc_xprt *xprt, struct rpc_task *task)
{
if (xprt->snd_task != task)
return;
spin_lock_bh(&xprt->transport_lock);
xprt->ops->release_xprt(xprt, task);
spin_unlock_bh(&xprt->transport_lock);
@ -1645,8 +1649,7 @@ void xprt_release(struct rpc_task *task)
if (req == NULL) {
if (task->tk_client) {
xprt = task->tk_xprt;
if (xprt->snd_task == task)
xprt_release_write(xprt, task);
xprt_release_write(xprt, task);
}
return;
}