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Date:      Fri, 22 May 1998 16:30:58 -0500 (EST)
From:      "John S. Dyson" <dyson@FreeBSD.ORG>
To:        bf20761@binghamton.edu (zhihuizhang)
Cc:        freebsd-hackers@FreeBSD.ORG
Subject:   Re: How MAP_ENTRY_IS_A_MAP is used?
Message-ID:  <199805222130.QAA00326@dyson.iquest.net>
In-Reply-To: <Pine.SOL.L3.93.980522105701.13579A-100000@bingsun2> from zhihuizhang at "May 22, 98 11:02:22 am"

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zhihuizhang said:
> 
> Hi, friends:
> 
> I am reading VM source code concerning the vm_map_entry structure.  There
> is a flag called MAP_ENTRY_IS_A_MAP used widely, but I search all the
> codes in VM and can not find where this flag gets set into the eflags
> field of the vm_map_entry structure.  By the way, MAP_ENTRY_IS_A_SUB_MAP
> is set in vm_map_submap( ).  It is often used together with
> MAP_ENTRY_IS_A_MAP.  I hope someone can give me a hint on this.
> 
It is legacy, perhaps to be resurrected, perhaps not.

-- 
John                  | Never try to teach a pig to sing,
dyson@freebsd.org     | it just makes you look stupid,
jdyson@nc.com         | and it irritates the pig.

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