From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 1ED38C4332F for ; Mon, 14 Nov 2022 03:41:57 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235416AbiKNDlz (ORCPT ); Sun, 13 Nov 2022 22:41:55 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:60086 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235249AbiKNDlz (ORCPT ); Sun, 13 Nov 2022 22:41:55 -0500 Received: from mxct.zte.com.cn (mxct.zte.com.cn [58.251.27.85]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 22CA9DFD5; Sun, 13 Nov 2022 19:41:54 -0800 (PST) Received: from mxde.zte.com.cn (unknown [10.35.20.121]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mxct.zte.com.cn (FangMail) with ESMTPS id 4N9Zqh2y7zz1DF1; Mon, 14 Nov 2022 11:41:52 +0800 (CST) Received: from mxus.zte.com.cn (unknown [10.207.168.8]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mxde.zte.com.cn (FangMail) with ESMTPS id 4N9Zqc4tQLz9vSpk; Mon, 14 Nov 2022 11:41:48 +0800 (CST) Received: from mxhk.zte.com.cn (unknown [192.168.250.138]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mxus.zte.com.cn (FangMail) with ESMTPS id 4N9ZqY18v1zdmYkm; Mon, 14 Nov 2022 11:41:45 +0800 (CST) Received: from mse-fl2.zte.com.cn (unknown [10.5.228.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mxhk.zte.com.cn (FangMail) with ESMTPS id 4N9ZqT4Xpsz4xVnZ; Mon, 14 Nov 2022 11:41:41 +0800 (CST) Received: from szxlzmapp05.zte.com.cn ([10.5.230.85]) by mse-fl2.zte.com.cn with SMTP id 2AE3fcEJ087398; Mon, 14 Nov 2022 11:41:38 +0800 (+08) (envelope-from yang.yang29@zte.com.cn) Received: from mapi (szxlzmapp04[null]) by mapi (Zmail) with MAPI id mid14; Mon, 14 Nov 2022 11:41:40 +0800 (CST) Date: Mon, 14 Nov 2022 11:41:40 +0800 (CST) X-Zmail-TransId: 2b066371b8f4ffffffff83808b3c X-Mailer: Zmail v1.0 Message-ID: <202211141141400847357@zte.com.cn> Mime-Version: 1.0 From: To: Cc: , , , , , , Subject: =?UTF-8?B?W1BBVENIIGxpbnV4LW5leHRdIHpyYW06IHVzZSBzeXNmc19lbWl0KCkgdG8gaW5zdGVhZCBvZiBzY25wcmludGYoKQ==?= Content-Type: text/plain; charset="UTF-8" X-MAIL: mse-fl2.zte.com.cn 2AE3fcEJ087398 X-Fangmail-Gw-Spam-Type: 0 X-FangMail-Miltered: at cgslv5.04-192.168.251.14.novalocal with ID 6371B8FF.000 by FangMail milter! X-FangMail-Envelope: 1668397312/4N9Zqh2y7zz1DF1/6371B8FF.000/10.35.20.121/[10.35.20.121]/mxde.zte.com.cn/ X-Fangmail-Anti-Spam-Filtered: true X-Fangmail-MID-QID: 6371B8FF.000/4N9Zqh2y7zz1DF1 Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org From: Xu Panda Replace the open-code with sysfs_emit() to simplify the code. Signed-off-by: Xu Panda Signed-off-by: Yang Yang --- drivers/block/zram/zram_drv.c | 25 ++++++++++--------------- 1 file changed, 10 insertions(+), 15 deletions(-) diff --git a/drivers/block/zram/zram_drv.c b/drivers/block/zram/zram_drv.c index 171eccc2249d..67aeb668f623 100644 --- a/drivers/block/zram/zram_drv.c +++ b/drivers/block/zram/zram_drv.c @@ -255,7 +255,7 @@ static ssize_t initstate_show(struct device *dev, val = init_done(zram); up_read(&zram->init_lock); - return scnprintf(buf, PAGE_SIZE, "%u\n", val); + return sysfs_emit(buf, "%u\n", val); } static ssize_t disksize_show(struct device *dev, @@ -263,7 +263,7 @@ static ssize_t disksize_show(struct device *dev, { struct zram *zram = dev_to_zram(dev); - return scnprintf(buf, PAGE_SIZE, "%llu\n", zram->disksize); + return sysfs_emit(buf, "%llu\n", zram->disksize); } static ssize_t mem_limit_store(struct device *dev, @@ -404,7 +404,7 @@ static ssize_t writeback_limit_enable_show(struct device *dev, spin_unlock(&zram->wb_limit_lock); up_read(&zram->init_lock); - return scnprintf(buf, PAGE_SIZE, "%d\n", val); + return sysfs_emit(buf, "%d\n", val); } static ssize_t writeback_limit_store(struct device *dev, @@ -439,7 +439,7 @@ static ssize_t writeback_limit_show(struct device *dev, spin_unlock(&zram->wb_limit_lock); up_read(&zram->init_lock); - return scnprintf(buf, PAGE_SIZE, "%llu\n", val); + return sysfs_emit(buf, "%llu\n", val); } static void reset_bdev(struct zram *zram) @@ -1020,7 +1020,7 @@ static void zram_debugfs_unregister(struct zram *zram) {}; static ssize_t max_comp_streams_show(struct device *dev, struct device_attribute *attr, char *buf) { - return scnprintf(buf, PAGE_SIZE, "%d\n", num_online_cpus()); + return sysfs_emit(buf, "%d\n", num_online_cpus()); } static ssize_t max_comp_streams_store(struct device *dev, @@ -1191,8 +1191,7 @@ static ssize_t io_stat_show(struct device *dev, ssize_t ret; down_read(&zram->init_lock); - ret = scnprintf(buf, PAGE_SIZE, - "%8llu %8llu %8llu %8llu\n", + ret = sysfs_emit(buf, "%8llu %8llu %8llu %8llu\n", (u64)atomic64_read(&zram->stats.failed_reads), (u64)atomic64_read(&zram->stats.failed_writes), (u64)atomic64_read(&zram->stats.invalid_io), @@ -1222,8 +1221,7 @@ static ssize_t mm_stat_show(struct device *dev, orig_size = atomic64_read(&zram->stats.pages_stored); max_used = atomic_long_read(&zram->stats.max_used_pages); - ret = scnprintf(buf, PAGE_SIZE, - "%8llu %8llu %8llu %8lu %8ld %8llu %8lu %8llu %8llu\n", + ret = sysfs_emit(buf, "%8llu %8llu %8llu %8lu %8ld %8llu %8lu %8llu %8llu\n", orig_size << PAGE_SHIFT, (u64)atomic64_read(&zram->stats.compr_data_size), mem_used << PAGE_SHIFT, @@ -1247,8 +1245,7 @@ static ssize_t bd_stat_show(struct device *dev, ssize_t ret; down_read(&zram->init_lock); - ret = scnprintf(buf, PAGE_SIZE, - "%8llu %8llu %8llu\n", + ret = sysfs_emit(buf, "%8llu %8llu %8llu\n", FOUR_K((u64)atomic64_read(&zram->stats.bd_count)), FOUR_K((u64)atomic64_read(&zram->stats.bd_reads)), FOUR_K((u64)atomic64_read(&zram->stats.bd_writes))); @@ -1266,9 +1263,7 @@ static ssize_t debug_stat_show(struct device *dev, ssize_t ret; down_read(&zram->init_lock); - ret = scnprintf(buf, PAGE_SIZE, - "version: %d\n%8llu %8llu\n", - version, + ret = sysfs_emit(buf, "version: %d\n%8llu %8llu\n", version, (u64)atomic64_read(&zram->stats.writestall), (u64)atomic64_read(&zram->stats.miss_free)); up_read(&zram->init_lock); @@ -2504,7 +2499,7 @@ static ssize_t hot_add_show(struct class *class, if (ret < 0) return ret; - return scnprintf(buf, PAGE_SIZE, "%d\n", ret); + return sysfs_emit(buf, "%d\n", ret); } static struct class_attribute class_attr_hot_add = __ATTR(hot_add, 0400, hot_add_show, NULL); -- 2.15.2