linux-kernel - [RFC PATCH 5/5] 9p: Track 9P RPC waiting time as IO

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Message-ID: <cd1a0278bc06117a870fa7068228e77327a25127.1756635044.git.repk@triplefau.lt>
Date: Sun, 31 Aug 2025 21:03:43 +0200
From: Remi Pommarel <repk@...plefau.lt>
To: v9fs@...ts.linux.dev
Cc: linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
 Eric Van Hensbergen <ericvh@...nel.org>,
 Latchesar Ionkov <lucho@...kov.net>,
 Dominique Martinet <asmadeus@...ewreck.org>,
 Christian Schoenebeck <linux_oss@...debyte.com>,
 Remi Pommarel <repk@...plefau.lt>
Subject: [RFC PATCH 5/5] 9p: Track 9P RPC waiting time as IO

Use io_wait_event_killable() to ensure that time spent waiting for 9P
RPC transactions is accounted as IO wait time.

Signed-off-by: Remi Pommarel <repk@...plefau.lt>
---
 net/9p/client.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/net/9p/client.c b/net/9p/client.c
index 5c1ca57ccd28..3f0f4d6efc00 100644
--- a/net/9p/client.c
+++ b/net/9p/client.c
@@ -713,8 +713,8 @@ p9_client_rpc(struct p9_client *c, int8_t type, const char *fmt, ...)
 	}
 again:
 	/* Wait for the response */
-	err = wait_event_killable(req->wq,
-				  READ_ONCE(req->status) >= REQ_STATUS_RCVD);
+	err = io_wait_event_killable(req->wq,
+				     READ_ONCE(req->status) >= REQ_STATUS_RCVD);
 
 	/* Make sure our req is coherent with regard to updates in other
 	 * threads - echoes to wmb() in the callback
-- 
2.50.1