Re: [PATCH 01/15] Introduce noop_llseek()

[Jan Blunck]

On Fri, Nov 20, Jamie Lokier wrote:

> Jan Blunck wrote:
> > The noop_llseek() is a llseek() operation that filesystems can use that
> > don't want to support seeking (leave the file->f_pos untouched) but still
> > want to let the syscall itself to succeed.
> 
> This is weird behaviour: if you want to allow llseek() to succeed but
> don't really support seeking, why does the device even care about the
> value of file->f_pos?

The device itself does not care about it but it is userspace that is expecting
the seek to succeed. There is a comment in osst that at least there seems to
be a borken version of tar that wants to seek on the device even it that does
not have any effect.

Regards,
	Jan

-- 
Jan Blunck <jblunck@xxxxxxx>
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