Re: [PATCH] vfs: freeze filesystems just prior to reboot

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> Any objections to something like an ioctl (fd, FIFREEZETHAW, 0) ?

It's going to be completely trivial, which argues for it.  The only
points left woul be bikeshedding over the name, and how to describe
its semantics.

> in the end probably the real fix is probably something like storing
> multiple copies of the bootloader config with checksums that grub
> can verify.  Basically teach grub to try really hard to extract known-good
> data from the FS.  For file-level consistency that'd be pretty easy,
> we could have e.g. 

The real answer is to have a filesystem that does the above for you
for the boot partition, e.g. one where the kernel and grub have
a common consistency protocol for.
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