Declare request_cache variable as static. It is only used by drivers/staging/lustre/lustre/ptlrpc/client.c, and its naming is common which will lead to namespace pollution. Signed-off-by: Simon Guo <wei.guo.simon(a)gmail.com&gt; --- drivers/staging/lustre/lustre/ptlrpc/client.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/staging/lustre/lustre/ptlrpc/client.c b/drivers/staging/lustre/lustre/ptlrpc/client.c index 45b7af7..347110e 100644 --- a/drivers/staging/lustre/lustre/ptlrpc/client.c +++ b/drivers/staging/lustre/lustre/ptlrpc/client.c @@ -390,7 +390,7 @@ static int ptlrpc_at_recv_early_reply(struct ptlrpc_request *req) return rc; } -struct kmem_cache *request_cache; +static struct kmem_cache *request_cache; int ptlrpc_request_cache_init(void) { -- 1.8.1.2