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In order to add directory delegation support, we need to break delegations on the parent whenever there is going to be a change in the directory. Add a new delegated_inode pointer to vfs_mknod() and have the appropriate callers wait when there is an outstanding delegation. All other callers just set the pointer to NULL. Reviewed-by: Jan Kara <jack@suse.cz> Reviewed-by: NeilBrown <neil@brown.name> Signed-off-by: Jeff Layton <jlayton@kernel.org> Link: https://patch.msgid.link/20251111-dir-deleg-ro-v6-11-52f3feebb2f2@kernel.org Signed-off-by: Christian Brauner <brauner@kernel.org>