add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/fs/ramfs/inode.c
..
..
@@ -264,7 +264,7 @@
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 	return 0;
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 }
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-static void ramfs_kill_sb(struct super_block *sb)
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+void ramfs_kill_sb(struct super_block *sb)
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 {
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 	kfree(sb->s_fs_info);
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 	kill_litter_super(sb);