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e3fad0376d
Add a high-level document that describes how multigrain timestamps work, rationale for them, and some info about implementation and tradeoffs. Reviewed-by: Josef Bacik <josef@toxicpanda.com> Reviewed-by: Darrick J. Wong <djwong@kernel.org> Reviewed-by: Randy Dunlap <rdunlap@infradead.org> Reviewed-by: Jan Kara <jack@suse.cz> Tested-by: Randy Dunlap <rdunlap@infradead.org> # documentation bits Signed-off-by: Jeff Layton <jlayton@kernel.org> Link: https://lore.kernel.org/r/20241002-mgtime-v10-8-d1c4717f5284@kernel.org Signed-off-by: Christian Brauner <brauner@kernel.org>