Re: [PATCH v5 07/14] memory-hotplug: move pgdat_resize_lock into sparse_remove_one_section()

(2012/12/24 21:09), Tang Chen wrote:

In __remove_section(), we locked pgdat_resize_lock when calling
sparse_remove_one_section(). This lock will disable irq. But we don't need
to lock the whole function. If we do some work to free pagetables in
free_section_usemap(), we need to call flush_tlb_all(), which need
irq enabled. Otherwise the WARN_ON_ONCE() in smp_call_function_many()
will be triggered.

Signed-off-by: Tang Chen <redacted>
Signed-off-by: Lai Jiangshan <redacted>
Signed-off-by: Wen Congyang <redacted>

If this is a bug fix, call-trace in your log and BUGFIX or -fix- in patch title
will be appreciated, I think.

Acked-by: KAMEZAWA Hiroyuki <redacted>