Re: remove get_super

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On Fri, Aug 11, 2023 at 12:08:11PM +0200, Christoph Hellwig wrote:
> Hi all,
> this series against the VFS vfs.super branch finishes off the work to remove
> get_super and move (almost) all upcalls to use the holder ops.
> The first part is the missing btrfs bits so that all file systems use the
> super_block as holder.
> The second part is various block driver cleanups so that we use proper
> interfaces instead of raw calls to __invalidate_device and fsync_bdev.
> The last part than replaces __invalidate_device and fsync_bdev with upcalls
> to the file system through the holder ops, and finally removes get_super.
> It leaves user_get_super and get_active_super around.  The former is not
> used for upcalls in the traditional sense, but for legacy UAPI that for
> some weird reason take a dev_t argument (ustat) or a block device path
> (quotactl).  get_active_super is only used for calling into the file system
> on freeze and should get a similar treatment, but given that Darrick has
> changes to that code queued up already this will be handled in the next
> merge window.
> A git tree is available here:
>     git:// remove-get_super

FYI, I've added patches 2-5 as a topic branch to btrfs for-next.

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