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| author | Chuck Lever <chuck.lever@oracle.com> | 2007-03-29 16:47:58 -0400 |
|---|---|---|
| committer | Trond Myklebust <Trond.Myklebust@netapp.com> | 2007-04-30 22:17:11 -0700 |
| commit | c5a4dd8b7c15927a8fbff83171b57cad675a79b9 (patch) | |
| tree | 2d3b1930449b31f69dc70a6e1d4e0f0532f3f118 /net/sunrpc/clnt.c | |
| parent | 2bea90d43a050bbc4021d44e59beb34f384438db (diff) | |
| download | op-kernel-dev-c5a4dd8b7c15927a8fbff83171b57cad675a79b9.zip op-kernel-dev-c5a4dd8b7c15927a8fbff83171b57cad675a79b9.tar.gz | |
SUNRPC: Eliminate side effects from rpc_malloc
Currently rpc_malloc sets req->rq_buffer internally. Make this a more
generic interface: return a pointer to the new buffer (or NULL) and
make the caller set req->rq_buffer and req->rq_bufsize. This looks much
more like kmalloc and eliminates the side effects.
To fix a potential deadlock, this patch also replaces GFP_NOFS with
GFP_NOWAIT in rpc_malloc. This prevents async RPCs from sleeping outside
the RPC's task scheduler while allocating their buffer.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Diffstat (limited to 'net/sunrpc/clnt.c')
| -rw-r--r-- | net/sunrpc/clnt.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/net/sunrpc/clnt.c b/net/sunrpc/clnt.c index 12487aa..e7dc09e 100644 --- a/net/sunrpc/clnt.c +++ b/net/sunrpc/clnt.c @@ -774,7 +774,8 @@ call_allocate(struct rpc_task *task) req->rq_rcvsize = RPC_REPHDRSIZE + slack + proc->p_replen; req->rq_rcvsize <<= 2; - xprt->ops->buf_alloc(task, req->rq_callsize + req->rq_rcvsize); + req->rq_buffer = xprt->ops->buf_alloc(task, + req->rq_callsize + req->rq_rcvsize); if (req->rq_buffer != NULL) return; |
