Date: Thu, 07 Mar 2002 10:52:38 -0800 From: Terry Lambert <tlambert2@mindspring.com> To: Zhihui Zhang <zzhang@cs.binghamton.edu> Cc: freebsd-hackers@freebsd.org Subject: Re: A question of VM page ownership Message-ID: <3C87B6F6.C56CC50C@mindspring.com> References: <Pine.SOL.4.21.0203071118040.5254-100000@onyx>
next in thread | previous in thread | raw e-mail | index | archive | help
Zhihui Zhang wrote: > Is there any fundamental reason why a page can not be owned by more than > one VM object? If that was the case, the bogus page stuff in vfs_bio.c > could be made cleaner IMHO. When you need to reclaim the page, you would have to identify all owners, rather than a single owner. THis converts the lookup fron an O(1) to an O(N) problem. Keeping a linked list of owners doesn't really help, either, since it introduces locking issues that will cause -current to blow chunks. -- Terry To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?3C87B6F6.C56CC50C>