Possible FC2 inclusions from fedora.us

[Ronny Buchmann]

On Monday 26 January 2004 18:58, Alan Cox wrote:
> On Mon, Jan 26, 2004 at 11:07:06AM -0600, Steven Pritchard wrote:
> > dd_rescue handles that by using a large block size until it hits an
> > error, then retrying with a small block size.
> >
> > I've had to use it a few times.  It works really well.
>
> The file system may still do smart stuff like merging requests. Also only
It's usually used for reading from block devices (disks).
> raw I/O to disks really lets you get down to the media block size not the
> fs block size (eg losing 512 bytes not 4k). Thats normally only an issue
> with floppies because the 'real' blocksize of a hard disk is now typically
> 8-32K
Does the kernel do read-ahead in the block layer or in vfs?

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