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authorChuck Lever <chuck.lever@oracle.com>2007-03-29 16:47:58 -0400
committerTrond Myklebust <Trond.Myklebust@netapp.com>2007-04-30 22:17:11 -0700
commitc5a4dd8b7c15927a8fbff83171b57cad675a79b9 (patch)
tree2d3b1930449b31f69dc70a6e1d4e0f0532f3f118 /net/sunrpc/clnt.c
parent2bea90d43a050bbc4021d44e59beb34f384438db (diff)
downloadop-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.c3
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;
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