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SubjectRe: [RFC v2 6/6] fs: add automatic kernel fs freeze / thaw and remove kthread freezing
On Tue, Apr 20, 2021 at 01:59:03PM +0100, Christoph Hellwig wrote:
> > This also removes all the superflous freezer calls on all filesystems
> > as they are no longer needed as the VFS now performs filesystem
> > freezing/thaw if the filesystem has support for it. The filesystem
> > therefore is in charge of properly dealing with quiescing of the
> > filesystem through its callbacks.
>
> Can you split that out from the main logic change? Maybe even into one
> patch per file system?

The issue with this is that once you do the changes in pm to
freeze/suspend, if you leave the other changes in for the filesystems
freeze / resume will stall, so all this needs to be an atomic operation
if we want bisectable kernels.

Luis

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