Re: [RFC] shmem: Add eventfd notification on utlilization level
From: Beata Michalska
Date: Tue Mar 10 2015 - 11:25:23 EST
On 03/10/2015 03:22 PM, Jan Kara wrote:
> On Tue 10-03-15 06:03:23, Christoph Hellwig wrote:
>> On Tue, Mar 10, 2015 at 10:51:41AM +0900, Kyungmin Park wrote:
>>> Any updates?
>> Please just add disk quota support to tmpfs so thast the standard quota
>> netlink notifications can be used.
> If I understand the problem at hand, they are really interested in
> notification when running out of free space. Using quota for that doesn't
> seem ideal since that tracks used space per user, not free space on fs as a
> But if I remember right there were discussions about ENOSPC notification
> from filesystem for thin provisioning usecases. It would be good to make
> this consistent with those but I'm not sure if it went anywhere.
The ideal case here, would be to get the notification, despite the type
of the actual filesystem, whenever the amount of free space drops below
a certain level. Quota doesn't seem to be the right approach here.
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