Re: set blksize of block device

[Lei Yang]

Denis Vlasenko wrote:

> On Thursday 28 October 2004 05:25, Lei Yang wrote:
>  
>
> > Or in other words, is there generic routines for block devices such that 
> > we could:
> >
> > get (set) block size of a block device;
> > read an existing block (e.g. block 4);
> > write an existing block (e.g. block 5);
> >    
>
> Can you stick to "reply below quote" style please?
>  
OK

>  
>
> > > If nobody could answer this question, what about another one? Is there 
> > > a system call or a kernel interface that would allow me to write a 
> > >      
>
> Can you use read, write and seek system calls?
> --
> vda
>
>
>  
Not really, as I've explained, I want to do all these stuff in kernel 
space. More specifically, I want to write a newbie kernel module. In 
this module, I'll do something with a raw block device (with no 
filesystem). For example, I want to do block I/O operations on ramdisk, 
and I want to set the block size of ramdisk to whatever value I want 
(power of 2 of course).

Any comments?

Thanks,
Lei

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