Re: __user and iov_base

[viro@parcelfarce.linux.theplanet.co.uk]

On Mon, Jun 14, 2004 at 12:53:18PM -0500, Steve French wrote:
> If a buffer is never used in user space, and is potentially recycled
> (via mempools) for use by more than one process, then it can't be passed
> around as an __user buffer, but is it ok to simply do
> 	myiovec.iov_base = (__user char *)some_buffer; 
> or is there another preferred way to handle kernel to __user
> mappings/casts?

Yes - leave them alone.  The warning points to real problem with the
interface; ergo, it should not disappear until there's a clean solution
(if ever).