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    SubjectRe: [RFC PATCH 01/10] vfio: Create vfio_fs_type with inode per device
    On Fri, Feb 26, 2021 at 05:38:04AM +0000, Christoph Hellwig wrote:
    > On Mon, Feb 22, 2021 at 09:50:35AM -0700, Alex Williamson wrote:
    > > By linking all the device fds we provide to userspace to an
    > > address space through a new pseudo fs, we can use tools like
    > > unmap_mapping_range() to zap all vmas associated with a device.
    > >
    > > Suggested-by: Jason Gunthorpe <jgg@nvidia.com>
    > > Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
    >
    > Adding Al:
    >
    > I hate how we're are growing these tiny file systems just to allocate an
    > anonymous inode all over. Shouldn't we allow to enhance fs/anon_inodes.c
    > to add a new API to allocate a new specific inode from anon_inodefs
    > instead?

    +1 when I was researching this I also felt this was alot of
    boilerplate to just get an inode. With vfio and rdma getting this it
    is at least 5 places now.

    Jason

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