From c5a4dd8b7c15927a8fbff83171b57cad675a79b9 Mon Sep 17 00:00:00 2001 From: Chuck Lever Date: Thu, 29 Mar 2007 16:47:58 -0400 Subject: 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 Signed-off-by: Trond Myklebust --- include/linux/sunrpc/sched.h | 2 +- include/linux/sunrpc/xprt.h | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) (limited to 'include/linux/sunrpc') diff --git a/include/linux/sunrpc/sched.h b/include/linux/sunrpc/sched.h index 3069ecca0129..2047fb202a13 100644 --- a/include/linux/sunrpc/sched.h +++ b/include/linux/sunrpc/sched.h @@ -264,7 +264,7 @@ struct rpc_task *rpc_wake_up_next(struct rpc_wait_queue *); void rpc_wake_up_status(struct rpc_wait_queue *, int); void rpc_delay(struct rpc_task *, unsigned long); void * rpc_malloc(struct rpc_task *, size_t); -void rpc_free(struct rpc_task *); +void rpc_free(void *); int rpciod_up(void); void rpciod_down(void); int __rpc_wait_for_completion_task(struct rpc_task *task, int (*)(void *)); diff --git a/include/linux/sunrpc/xprt.h b/include/linux/sunrpc/xprt.h index 7aa29502b187..745afc1d3068 100644 --- a/include/linux/sunrpc/xprt.h +++ b/include/linux/sunrpc/xprt.h @@ -114,7 +114,7 @@ struct rpc_xprt_ops { void (*set_port)(struct rpc_xprt *xprt, unsigned short port); void (*connect)(struct rpc_task *task); void * (*buf_alloc)(struct rpc_task *task, size_t size); - void (*buf_free)(struct rpc_task *task); + void (*buf_free)(void *buffer); int (*send_request)(struct rpc_task *task); void (*set_retrans_timeout)(struct rpc_task *task); void (*timer)(struct rpc_task *task); -- cgit