Date: Tue, 29 Jan 2002 10:17:31 -0600 (CST) From: Hyong-Youb Kim <hykim@cs.rice.edu> To: <hackers@freebsd.org> Subject: another VM question Message-ID: <Pine.GSO.4.33.0201291005200.28168-100000@nevada.cs.rice.edu>
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First off, for each open file, does the kernel keep a unique vnode structure? If so, will it have at most one vm_object reference at any time? I am guessing that mmaping a file will create vm_object with a vnode pager that references vnode. But then under what circumstances does vnode not have a valid vm_object? Well ... also ahh what is the difference between VMIO and non-VMIO? Does the latter just mean that phyio? You can smack my head if these questions are so dumb. John To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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