linux-kernel - some questions about __get_vm_area

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Message-ID: <CAOVJa8EVHhfFfHHNAyAeT0ZYj3vZFW3Uu4K2PzBEGGOz92fhiw@mail.gmail.com>
Date:	Thu, 5 Apr 2012 14:00:20 +0800
From:	vichy <vichy.kuo@...il.com>
To:	Kernel Newbies <kernelnewbies@...linux.org>,
	linux-kernel@...r.kernel.org
Subject: some questions about __get_vm_area_node

Hi all:
I have a question about __get_vm_area_node.
Q. Why we announce "static struct vmap_area *va;" instead of "struct
vmap_area *va;"
I cannot see is there any benefit to take this variable as static.

Thanks for your help in advance.
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