Date: Sat, 20 Sep 2014 15:07:30 +0800 (CST) From: btw@mail.ustc.edu.cn To: freebsd-hackers@freebsd.org Subject: What's the difference between kmem_arena and kernel_arena? Message-ID: <1473289.768021411196850376.JavaMail.coremail@mailweb>
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Hi All,
There are two similar variables declared in vm/vm_kern.h, they are kernel_arena
and kmem_arena. Both of them are used in kmem_malloc():
rv = kmem_back((vmem == kmem_arena) ? kmem_object : kernel_object,
I'm wondering what's the difference between them. Why both of them are needed?
I have done a lot of searching, but I still can not find an answer.
Thanks in advance!
- twb
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