Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753441Ab3FFQLW (ORCPT ); Thu, 6 Jun 2013 12:11:22 -0400 Received: from mail-pb0-f46.google.com ([209.85.160.46]:62005 "EHLO mail-pb0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753344Ab3FFQLT (ORCPT ); Thu, 6 Jun 2013 12:11:19 -0400 From: Jiang Liu To: Greg Kroah-Hartman , Nitin Gupta , Minchan Kim , Jerome Marchand Cc: Jiang Liu , devel@driverdev.osuosl.org, linux-kernel@vger.kernel.org Subject: [PATCH v3 07/10] zram: simplify and optimize dev_to_zram() Date: Fri, 7 Jun 2013 00:07:28 +0800 Message-Id: <1370534851-26056-8-git-send-email-jiang.liu@huawei.com> X-Mailer: git-send-email 1.8.1.2 In-Reply-To: <1370534851-26056-1-git-send-email-jiang.liu@huawei.com> References: <1370534851-26056-1-git-send-email-jiang.liu@huawei.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1192 Lines: 41 Simplify and optimize dev_to_zram() without walking the zram_devices array. Signed-off-by: Jiang Liu --- drivers/staging/zram/zram_sysfs.c | 13 ++----------- 1 file changed, 2 insertions(+), 11 deletions(-) diff --git a/drivers/staging/zram/zram_sysfs.c b/drivers/staging/zram/zram_sysfs.c index dc76a3d..e239d94 100644 --- a/drivers/staging/zram/zram_sysfs.c +++ b/drivers/staging/zram/zram_sysfs.c @@ -30,18 +30,9 @@ static u64 zram_stat64_read(struct zram *zram, u64 *v) return val; } -static struct zram *dev_to_zram(struct device *dev) +static inline struct zram *dev_to_zram(struct device *dev) { - int i; - struct zram *zram = NULL; - - for (i = 0; i < zram_get_num_devices(); i++) { - zram = &zram_devices[i]; - if (disk_to_dev(zram->disk) == dev) - break; - } - - return zram; + return (struct zram *)dev_to_disk(dev)->private_data; } static ssize_t disksize_show(struct device *dev, -- 1.8.1.2 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/