Commit 96a6db3fd776 for kernel

commit 96a6db3fd7763f676fb6a25658b11aaf0e4fa4f9
Author: Dominique Martinet <asmadeus@codewreck.org>
Date:   Fri May 29 12:09:20 2026 +0900

    9p: v9fs_file_do_lock: replace WARN_ONCE with p9_debug

    This warning depends on server-provided data, we should not use
    WARN here

    Reported-by: Yifei Chu <yifeichu24@gmail.com>
    Closes: https://lore.kernel.org/r/CAPJnbgJ7ZK7DCjCfG56hd_iKGePmAzudb4hOWd4=9r32nM+KcA@mail.gmail.com
    Signed-off-by: Dominique Martinet <asmadeus@codewreck.org>
    Message-ID: <20260529-lock-warn-v1-1-20c29580d61d@codewreck.org>

diff --git a/fs/9p/vfs_file.c b/fs/9p/vfs_file.c
index c5e73c37baea..cddfb4b7ce4e 100644
--- a/fs/9p/vfs_file.c
+++ b/fs/9p/vfs_file.c
@@ -198,7 +198,7 @@ static int v9fs_file_do_lock(struct file *filp, int cmd, struct file_lock *fl)
 		res = -EAGAIN;
 		break;
 	default:
-		WARN_ONCE(1, "unknown lock status code: %d\n", status);
+		p9_debug(P9_DEBUG_ERROR, "unknown lock status code: %d\n", status);
 		fallthrough;
 	case P9_LOCK_ERROR:
 	case P9_LOCK_GRACE: