Re: patch: aio + bio for raw io

[Badari Pulavarty]

> 
> Quick message: this patch makes aio use bio directly for brw_kvec_async.  
> This is against yesterday's patchset.  Comments?
> 
Hi Ben,

I have one more question on your latest aio patch.

raw_kvec_rw() seem to handle max upto 512K (max_sectors = 2500). 
But I don't see any where you loop thro to satisfy the entire 
IO request.

Infact, generic_aio_read() is mapping the user buffer for the iosize 
and calling file->f_op->kvec_read(file, cb, iosize, pos). 
How does the io > 512K gets handled ?

NOTE: I have not looked at the userlevel code. Is IO split at max 512K
      at userlevel ?

Thanks,
Badari