From: Chuck Lever Date: Mon, 26 Jan 2015 22:11:47 +0000 (-0500) Subject: xprtrdma: Update the GFP flags used in xprt_rdma_allocate() X-Git-Tag: firefly_0821_release~176^2~2205^2~23^2~2 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=a0a1d50cd1e80652142af5cddcde500d06c71bdd;p=firefly-linux-kernel-4.4.55.git xprtrdma: Update the GFP flags used in xprt_rdma_allocate() Reflect the more conservative approach used in the socket transport's version of this transport method. An RPC buffer allocation should avoid forcing not just FS activity, but any I/O. In particular, two recent changes missed updating xprtrdma: - Commit c6c8fe79a83e ("net, sunrpc: suppress allocation warning ...") - Commit a564b8f03986 ("nfs: enable swap on NFS") Signed-off-by: Chuck Lever Signed-off-by: Anna Schumaker --- diff --git a/net/sunrpc/xprtrdma/transport.c b/net/sunrpc/xprtrdma/transport.c index 2c2fabe99d84..2e192baa59f3 100644 --- a/net/sunrpc/xprtrdma/transport.c +++ b/net/sunrpc/xprtrdma/transport.c @@ -463,13 +463,16 @@ xprt_rdma_allocate(struct rpc_task *task, size_t size) struct rpcrdma_regbuf *rb; struct rpcrdma_req *req; size_t min_size; - gfp_t flags = task->tk_flags & RPC_TASK_SWAPPER ? - GFP_ATOMIC : GFP_NOFS; + gfp_t flags; req = rpcrdma_buffer_get(&r_xprt->rx_buf); if (req == NULL) return NULL; + flags = GFP_NOIO | __GFP_NOWARN; + if (RPC_IS_SWAPPER(task)) + flags = __GFP_MEMALLOC | GFP_NOWAIT | __GFP_NOWARN; + if (req->rl_rdmabuf == NULL) goto out_rdmabuf; if (req->rl_sendbuf == NULL)