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4a530a7c75
We would like to use the high 16bit of the handle_type field to encode file handle traits, such as "connectable". In preparation for this change, make sure that filesystems do not return a handle_type value with upper bits set and that the open_by_handle_at(2) syscall rejects these handle types. Signed-off-by: Amir Goldstein <amir73il@gmail.com> Link: https://lore.kernel.org/r/20241011090023.655623-2-amir73il@gmail.com Fixes: 570df4e9c23f ("ceph: snapshot nfs re-export") Acked-by: Reviewed-by: Jan Kara <jack@suse.cz> Reviewed-by: Jeff Layton <jlayton@kernel.org> Signed-off-by: Christian Brauner <brauner@kernel.org>