lkml.org 
[lkml]   [1997]   [Jun]   [4]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: Ext2fs and hashed table.
   Date: 	Wed, 4 Jun 1997 20:47:11 +0100
From: "Stephen C. Tweedie" <sct@dcs.ed.ac.uk>

The trouble is that you have to do it for _every_ write request in the
hole, unless you do fancy things with the tree and have a sparse map
--- in which case you're losing a lot of the intended efficiency gain
anyway. The direct map table seems to be a better idea all round for
writing into holes.

Actually, as long as the extent table fits in a single block, I don't
think it'll be that bad to be constantly reorganizing the extent table
(after all, it'll just be a single memcpy to make space in the table).
The moment that the extent table exceeds a single block, though, I'd
agree with Stephen that it's more trouble than it's really worth.

- Ted

\
 
 \ /
  Last update: 2005-03-22 13:39    [W:0.088 / U:0.728 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site