disable kernel build waring

hc

2024-05-10 093a6c67005148ae32a5c9e4553491b9f5c2457b

 kernel/include/linux/eventpoll.h
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@@ -1,14 +1,9 @@
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+/* SPDX-License-Identifier: GPL-2.0-or-later */
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 /*
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  *  include/linux/eventpoll.h ( Efficient event polling implementation )
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  *  Copyright (C) 2001,...,2006	 Davide Libenzi
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  *
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- *  This program is free software; you can redistribute it and/or modify
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- *  it under the terms of the GNU General Public License as published by
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- *  the Free Software Foundation; either version 2 of the License, or
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- *  (at your option) any later version.
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- *
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  *  Davide Libenzi <davidel@xmailserver.org>
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- *
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  */
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 #ifndef _LINUX_EVENTPOLL_H
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 #define _LINUX_EVENTPOLL_H
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@@ -23,7 +18,7 @@
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 #ifdef CONFIG_EPOLL
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-#ifdef CONFIG_CHECKPOINT_RESTORE
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+#ifdef CONFIG_KCMP
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 struct file *get_epoll_tfile_raw_ptr(struct file *file, int tfd, unsigned long toff);
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 #endif
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@@ -66,6 +61,15 @@
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 	eventpoll_release_file(file);
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 }
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+int do_epoll_ctl(int epfd, int op, int fd, struct epoll_event *epds,
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+		 bool nonblock);
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+
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+/* Tells if the epoll_ctl(2) operation needs an event copy from userspace */
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+static inline int ep_op_has_event(int op)
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+{
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+	return op != EPOLL_CTL_DEL;
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+}
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+
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 #else
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 static inline void eventpoll_init_file(struct file *file) {}