Subject: Re: paging space allocation (was Re: MFS over ISO-9660 union mounted
To: Chuck Silvers <>
From: Neil A. Carson <>
List: tech-kern
Date: 05/14/1999 11:47:53
Chuck Silvers wrote:

> but if you defrag the file, then you can't use that space for paging anymore.
> so the next time someone used that file, you wouldn't be able to put paging
> space near it.  so doesn't defraging the space used by files conflict
> with putting paging space near files you're using?

...and, of course, defragmenting FFS isn't anywhere near as easy as
other filing systems that defragment (ADFS, FAT) because there is no
data structure descibing a physical->logical mapping of the blocks on
the disc (the i-node goes the other way).