Re: [PATCH] btrfs: waiting on qgroup rescan should not always be interruptible

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On Mon, Aug 08, 2016 at 10:08:06PM -0400, jeffm@xxxxxxxx wrote:
> From: Jeff Mahoney <jeffm@xxxxxxxx>
> 
> We wait on qgroup rescan completion in three places: file system
> shutdown, the quota disable ioctl, and the rescan wait ioctl.  If the
> user sends a signal while we're waiting, we continue happily along.  This
> is expected behavior for the rescan wait ioctl.  It's racy in the shutdown
> path but mostly works due to other unrelated synchronization points.
> In the quota disable path, it Oopses the kernel pretty much immediately.
> 
> Cc: <stable@xxxxxxxxxxxxxxx> # v4.4+
> Signed-off-by: Jeff Mahoney <jeffm@xxxxxxxx>

Reviewed-by: David Sterba <dsterba@xxxxxxxx>
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