Re: 2.5.64-mm6

From: Andrew Morton (akpm@digeo.com)
Date: Fri Mar 14 2003 - 15:22:22 EST


Alex Tomas <bzzz@tmi.comex.ru> wrote:
>
> >>>>> Andrew Morton (AM) writes:
>
> AM> jlnance@unity.ncsu.edu wrote:
> >>
> >> Andrew, I am not sure what you mean by this. Are you saying that
> >> the way ld accesses files causes the blocks on the disk to be
> >> layed out poorly? That is the only thing I can think of that
> >> would get fixed by copying.
> >>
>
> AM> Exactly that. ld seeks all over the file when adding new blocks
> AM> to it, so with ext2 and ext3 (at least) there is poor
> AM> correspondence between file offset and block indices.
>
>
> hmm. I thought delayed allocation should solve this problem. Isn't it?

Absolutely. XFS shouldn't have this problem.

I have patches (against 2.5.7!) which get it all working for ext2
as well.

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