From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mga04.intel.com ([192.55.52.120]:64327 "EHLO mga04.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752822AbdBPAIR (ORCPT ); Wed, 15 Feb 2017 19:08:17 -0500 From: Keith Busch To: linux-block@vger.kernel.org, Scott Bauer , Jonathan Derrick Cc: Jens Axboe , Keith Busch Subject: [PATCH] opal: Use empty structure when not defined Date: Wed, 15 Feb 2017 19:16:27 -0500 Message-Id: <1487204187-4004-1-git-send-email-keith.busch@intel.com> Sender: linux-block-owner@vger.kernel.org List-Id: linux-block@vger.kernel.org No need to use space if it can't be used. This reduces the size of struct nvme_ctrl by a little over 4k when CONFIG_BLK_SED_OPAL is not set. Signed-off-by: Keith Busch --- include/linux/sed-opal.h | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/include/linux/sed-opal.h b/include/linux/sed-opal.h index 205d520..ed19902 100644 --- a/include/linux/sed-opal.h +++ b/include/linux/sed-opal.h @@ -91,6 +91,7 @@ struct parsed_resp { struct opal_resp_tok toks[MAX_TOKS]; }; +#ifdef CONFIG_BLK_SED_OPAL /** * struct opal_dev - The structure representing a OPAL enabled SED. * @supported: Whether or not OPAL is supported on this controller. @@ -129,7 +130,6 @@ struct opal_dev { struct list_head unlk_lst; }; -#ifdef CONFIG_BLK_SED_OPAL bool opal_unlock_from_suspend(struct opal_dev *dev); void init_opal_dev(struct opal_dev *opal_dev, sec_send_recv *send_recv); int sed_ioctl(struct opal_dev *dev, unsigned int cmd, void __user *ioctl_ptr); @@ -154,6 +154,9 @@ static inline bool is_sed_ioctl(unsigned int cmd) return false; } #else +struct opal_dev { +}; + static inline bool is_sed_ioctl(unsigned int cmd) { return false; @@ -171,8 +174,6 @@ static inline bool opal_unlock_from_suspend(struct opal_dev *dev) static inline void init_opal_dev(struct opal_dev *opal_dev, sec_send_recv *send_recv) { - opal_dev->supported = false; - opal_dev->initialized = true; } #endif /* CONFIG_BLK_SED_OPAL */ #endif /* LINUX_OPAL_H */ -- 2.5.5