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ring-buffer: remove obsolete comment for free_buffer_page()
[ Upstream commita98151ad53
] The comment refers to mm/slob.c which is being removed. It comes from commited56829cb3
("ring_buffer: reset buffer page when freeing") and according to Steven the borrowed code was a page mapcount and mapping reset, which was later removed by commite4c2ce82ca
("ring_buffer: allocate buffer page pointer"). Thus the comment is not accurate anyway, remove it. Link: https://lore.kernel.org/linux-trace-kernel/20230315142446.27040-1-vbabka@suse.cz Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Ingo Molnar <mingo@elte.hu> Reported-by: Mike Rapoport <mike.rapoport@gmail.com> Suggested-by: Steven Rostedt (Google) <rostedt@goodmis.org> Fixes:e4c2ce82ca
("ring_buffer: allocate buffer page pointer") Signed-off-by: Vlastimil Babka <vbabka@suse.cz> Reviewed-by: Mukesh Ojha <quic_mojha@quicinc.com> Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org> Stable-dep-of:45d99ea451
("ring-buffer: Fix bytes info in per_cpu buffer stats") Signed-off-by: Sasha Levin <sashal@kernel.org>
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@ -346,10 +346,6 @@ static void rb_init_page(struct buffer_data_page *bpage)
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local_set(&bpage->commit, 0);
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}
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/*
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* Also stolen from mm/slob.c. Thanks to Mathieu Desnoyers for pointing
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* this issue out.
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*/
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static void free_buffer_page(struct buffer_page *bpage)
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{
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free_page((unsigned long)bpage->page);
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