On Fri, May 19, 2017 at 01:39:49AM -0700, Sargun Dhillon wrote:
> On Fri, May 12, 2017 at 7:48 AM, David Sterba <dste...@suse.cz> wrote:
> > On Thu, May 11, 2017 at 09:17:01PM +0000, Sargun Dhillon wrote:
> >> This patchset makes it so that on a per-filesystem basis one can disable
> >> quota enforcement for users with cap_sys_resource. This patchset can
> >> likely later be extended to per-qgroup, or a per-volume basis. I'm
> >> thinking of extending the sysfs interface to list the qgroups and
> >> this same interface for the qgroups themselves.
> >>
> >> Changes since v1:
> >>   -Rather than a separate member of btrfs_fs_info, use the existing
> >>    flags field
> >
> > Looks good to me, thanks.
> I'm curious as to whether this approach is fine to get an Acked-by,

This was meant as an acked-by, the patch is now queued for 4.13, but as
it add some user-visible interface, this may need more time to see if we
haven't missed something.

> or
> if I need to figure out how to make it more leak-tolerant. I don't
> think modifying the overridden extents inflight is a problem. I'm not
> sure of a way a user would be able to create *new* chunks of data.
> Alternatively, I'd be quite happy making this applicable to metadata
> only, for file xattrs, creation, deletion, etc..

>From the interface POV, this can be set as a bitmask.  I haven't looked
if we'd be able to propagate all the changes everywhere in the code,
but sounds doable, bug I'm not sure if this level of fine-grained control
is desired.
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