[PATCH 11/43] convert do_remount_sb() to fs_context

[Andreas Schwab]

On Feb 19 2019, David Howells <dhowells at redhat.com> wrote:

> Replace do_remount_sb() with a function, reconfigure_super(), that's
> fs_context aware.  The fs_context is expected to be parameterised already
> and have ->root pointing to the superblock to be reconfigured.
>
> A legacy wrapper is provided that is intended to be called from the
> fs_context ops when those appear, but for now is called directly from
> reconfigure_super().  This wrapper invokes the ->remount_fs() superblock op
> for the moment.  It is intended that the remount_fs() op will be phased
> out.
>
> The fs_context->purpose is set to FS_CONTEXT_FOR_RECONFIGURE to indicate
> that the context is being used for reconfiguration.
>
> do_umount_root() is provided to consolidate remount-to-R/O for umount and
> emergency remount by creating a context and invoking reconfiguration.
>
> do_remount(), do_umount() and do_emergency_remount_callback() are switched
> to use the new process.

That breaks booting for me.  The problem appears to be that udev fails
to create the block devices.

Andreas.

-- 
Andreas Schwab, schwab at linux-m68k.org
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