Re: [PATCH 4/5] readahead: backoff on I/O error

Ingo Oeser
2006-06-10T18:37:45Z

Hi Fengguang,

On Friday, 9. June 2006 10:08, Wu Fengguang wrote:
> Backoff readahead size exponentially on I/O error.

> With this patch, retries are expected to be reduced from, say, 256, to 5.

1. Would you mind to push this patch to -stable?

Reason: If killing a drive was hit in the field, this should be critical
enough.

2. Could you disable (at least optionally) read ahead complety
on the first IO error?

Reason: In a data recovery situation (hitting EIO quite often,
but not really sequentially) readahead is counter productive.
E.g. trying to save an old CD with the cdparanoia software.

Regards

Ingo Oeser