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authorTrond Myklebust <trond.myklebust@hammerspace.com>2022-10-05 22:57:36 +0300
committerAnna Schumaker <Anna.Schumaker@Netapp.com>2022-10-06 16:52:09 +0300
commitf8423909ecca208834a9d704e58409800f8b5f21 (patch)
treea55dc54d7ad0254bcab9d25240cc64b249483e61 /net/sunrpc/sched.c
parent39494194f93bed7926d4b3bd03a6a76ba23e612b (diff)
downloadlinux-f8423909ecca208834a9d704e58409800f8b5f21.tar.xz
SUNRPC: Add a helper to allow pNFS drivers to selectively cancel RPC calls
Add the helper rpc_cancel_tasks(), which uses a caller-defined selection function to define a set of in-flight RPC calls to cancel. This is mainly intended for pNFS drivers which are subject to a layout recall, and which may therefore want to cancel all pending I/O using that layout in order to redrive it after the layout recall has been satisfied. Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com> Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
Diffstat (limited to 'net/sunrpc/sched.c')
-rw-r--r--net/sunrpc/sched.c11
1 files changed, 11 insertions, 0 deletions
diff --git a/net/sunrpc/sched.c b/net/sunrpc/sched.c
index f388bfaf6ff0..de912e02371b 100644
--- a/net/sunrpc/sched.c
+++ b/net/sunrpc/sched.c
@@ -872,6 +872,17 @@ void rpc_signal_task(struct rpc_task *task)
rpc_wake_up_queued_task(queue, task);
}
+void rpc_task_try_cancel(struct rpc_task *task, int error)
+{
+ struct rpc_wait_queue *queue;
+
+ if (!rpc_task_set_rpc_status(task, error))
+ return;
+ queue = READ_ONCE(task->tk_waitqueue);
+ if (queue)
+ rpc_wake_up_queued_task(queue, task);
+}
+
void rpc_exit(struct rpc_task *task, int status)
{
task->tk_status = status;