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In later patches we're going to embed some common fields into a new structure inside struct file_lock. Smooth the transition by adding some new helper functions, and converting the core file locking code to use them. Signed-off-by: Jeff Layton <jlayton@kernel.org> Link: https://lore.kernel.org/r/20240131-flsplit-v3-4-c6129007ee8d@kernel.org Reviewed-by: NeilBrown <neilb@suse.de> Signed-off-by: Christian Brauner <brauner@kernel.org>