Back in 2014 Ted Tso introduced the lazytime mount option for ext4 and
shortly thereafter a more generic VFS implementation which was then
merged into mainline. His early patches included support for Btrfs but
those changes were removed prior to the feature being merged. His
changelog includes the following note about the removal:
- Per Christoph's suggestion, drop support for btrfs and xfs for now,
issues with how btrfs and xfs handle dirty inode tracking. We can add
btrfs and xfs support back later or at the end of this series if we
want to revisit this decision.
My reading of the current mainline shows that Btrfs still lacks any
support for lazytime. Has any thought been given to adding support for
lazytime to Btrfs?
Thanks,
Adam
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