change system file

hc

2024-10-09 244b2c5ca8b14627e4a17755e5922221e121c771

 kernel/net/sysctl_net.c
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@@ -1,3 +1,4 @@
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+// SPDX-License-Identifier: GPL-2.0-only
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 /* -*- linux-c -*-
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  * sysctl_net.c: sysctl interface to net subsystem.
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  *