Disk defragmenter in Linux

[John Summerfied]

Jeff Vian wrote:

> 
> Exactly, and IIRC the filesystem knows that if it needs X amount of
> space for a file, then Y number of inodes are marked for use for that
> file at the beginning.  Thus space allocated is as contiguous as is
> efficient for read/write on the disk.

If "the filesystem knows that if it needs X amount of space for a file," 
that implies there's a way of telling it that.

How's that done? I don't recall any system call for *x (there is one for 
OS/2), and one could do it in JCL in IBM's OS in the 60s), but in the *x 
world I've never seen a way to do it.


> 


-- 

Cheers
John

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