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authorJeff Layton <jlayton@redhat.com>2012-07-23 15:51:55 -0400
committerTrond Myklebust <Trond.Myklebust@netapp.com>2012-07-30 18:55:08 -0400
commit506026c3ec270e18402f0c9d33fee37482c23861 (patch)
treecdfab41737e1493ec17ac433cfefde13618d177e /net
parent159e0561e322dd8008fff59e36efff8d2bdd0b0e (diff)
downloadlinux-506026c3ec270e18402f0c9d33fee37482c23861.tar.gz
sunrpc: clarify comments on rpc_make_runnable
rpc_make_runnable is not generally called with the queue lock held, unless it's waking up a task that has been sitting on a waitqueue. This is safe when the task has not entered the FSM yet, but the comments don't really spell this out. Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Diffstat (limited to 'net')
-rw-r--r--net/sunrpc/sched.c5
1 files changed, 3 insertions, 2 deletions
diff --git a/net/sunrpc/sched.c b/net/sunrpc/sched.c
index 994cfea2bad..ada1e2c33aa 100644
--- a/net/sunrpc/sched.c
+++ b/net/sunrpc/sched.c
@@ -300,8 +300,9 @@ EXPORT_SYMBOL_GPL(__rpc_wait_for_completion_task);
/*
* Make an RPC task runnable.
*
- * Note: If the task is ASYNC, this must be called with
- * the spinlock held to protect the wait queue operation.
+ * Note: If the task is ASYNC, and is being made runnable after sitting on an
+ * rpc_wait_queue, this must be called with the queue spinlock held to protect
+ * the wait queue operation.
*/
static void rpc_make_runnable(struct rpc_task *task)
{