Re: [patch][rfc] rewrite ramdisk

[Nick Piggin]

On Wednesday 17 October 2007 07:28, Theodore Tso wrote:
> On Tue, Oct 16, 2007 at 05:47:12PM +1000, Nick Piggin wrote:
> > +	/*
> > +	 * ram device BLKFLSBUF has special semantics, we want to actually
> > +	 * release and destroy the ramdisk data.
> > +	 */
>
> We won't be able to fix completely this for a while time, but the fact
> that BLKFLSBUF has special semantics has always been a major wart.
> Could we perhaps create a new ioctl, say RAMDISKDESTORY, and add a
> deperecation printk for BLKFLSBUF when passed to the ramdisk?  I doubt
> there are many tools that actually take advantage of this wierd aspect
> of ramdisks, so hopefully it's something we could remove in a 18
> months or so...

It would be nice to be able to do that, I agree. The new ramdisk
code will be able to flush the buffer cache and destroy its data
separately, so it can actually be implemented.
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