Re: [some sanity for a change] possible design issues for hybrids

[Christoph Hellwig]

On Fri, Aug 27, 2004 at 09:56:39AM +0100, Anton Altaparmakov wrote:
> If it is created on the fly, it should be "easy" to destroy on the fly
> using time-based expiry, i.e. a kernel daemon going over all of those
> beasts every X seconds (X = 5 perhaps?) and doing something like:
> 
> for (each vfsmount) {
> 	lock_vfsmount(vfsmount);
> 	if (MOUNT_IS_BUSY(vfsmount)) {
> 		unlock_vfsmount(vfsmount);
> 		continue;
> 	}
> 	if (current_time() < (vfsmount->last_used_time +
> 			vfsmount->expire_after)) {
> 		unlock_vfsmount(vfsmount);
> 		continue;
> 	}
> 	destroy_locked_vfsmount(vfsmount);
> }
> 
> Wouldn't that work?

That would work for a low number of them.  But with Hans' "visions" we'd
have a damn lot of them at which point this isn't really scalable.

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/