From patchwork Thu Jul 21 12:11:46 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Coly Li X-Patchwork-Id: 12925036 Received: from smtp-out2.suse.de (smtp-out2.suse.de [195.135.220.29]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 8203A3C1D for ; Thu, 21 Jul 2022 12:12:21 +0000 (UTC) Received: from relay2.suse.de (relay2.suse.de [149.44.160.134]) by smtp-out2.suse.de (Postfix) with ESMTP id D59981F892; Thu, 21 Jul 2022 12:12:13 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_rsa; t=1658405533; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=gHxE6GWJr96OZTCxfI8wGeH4KsPjEmZWjEFrFssVVg0=; b=JLAS47KmKUjqj+LGAM8hVYzQ6Hg31A9hocOrjqxXlx6Kv/sFdFzHCulon8ZtmnXec/eBJY 9Dvxe+eHqtppkDFGSu3UZe4fuNaeyeLEZEbo/tbJ3KANLQStF1CGMGkfwUolRZmTVX6M/D H+X3DQAg71sBCmVk+98foVUnb8SP2sg= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_ed25519; t=1658405533; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=gHxE6GWJr96OZTCxfI8wGeH4KsPjEmZWjEFrFssVVg0=; b=pmzXlz0jv04VKDE1+hJNeCq7boGiaplgI1rQOmdiTzgR8Cdlhpg6c+krbb7GInelJhFPGs RPxGCueDzEbvANBw== Received: from localhost.localdomain (unknown [10.163.16.22]) by relay2.suse.de (Postfix) with ESMTP id 3B34A2C14B; Thu, 21 Jul 2022 12:12:08 +0000 (UTC) From: Coly Li To: linux-block@vger.kernel.org Cc: nvdimm@lists.linux.dev, linux-raid@vger.kernel.org, Coly Li , Dan Williams , Geliang Tang , Hannes Reinecke , Jens Axboe , NeilBrown , Vishal L Verma , Xiao Ni Subject: [PATCH v6 1/7] badblocks: add more helper structure and routines in badblocks.h Date: Thu, 21 Jul 2022 20:11:46 +0800 Message-Id: <20220721121152.4180-2-colyli@suse.de> X-Mailer: git-send-email 2.35.3 In-Reply-To: <20220721121152.4180-1-colyli@suse.de> References: <20220721121152.4180-1-colyli@suse.de> Precedence: bulk X-Mailing-List: nvdimm@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 This patch adds the following helper structure and routines into badblocks.h, - struct badblocks_context This structure is used in improved badblocks code for bad table iteration. - BB_END() The macro to calculate end LBA of a bad range record from bad table. - badblocks_full() and badblocks_empty() The inline routines to check whether bad table is full or empty. - set_changed() and clear_changed() The inline routines to set and clear 'changed' tag from struct badblocks. These new helper structure and routines can help to make the code more clear, they will be used in the improved badblocks code in following patches. Signed-off-by: Coly Li Cc: Dan Williams Cc: Geliang Tang Cc: Hannes Reinecke Cc: Jens Axboe Cc: NeilBrown Cc: Vishal L Verma Cc: Xiao Ni Reviewed-by: Xiao Ni --- include/linux/badblocks.h | 30 ++++++++++++++++++++++++++++++ 1 file changed, 30 insertions(+) diff --git a/include/linux/badblocks.h b/include/linux/badblocks.h index 2426276b9bd3..670f2dae692f 100644 --- a/include/linux/badblocks.h +++ b/include/linux/badblocks.h @@ -15,6 +15,7 @@ #define BB_OFFSET(x) (((x) & BB_OFFSET_MASK) >> 9) #define BB_LEN(x) (((x) & BB_LEN_MASK) + 1) #define BB_ACK(x) (!!((x) & BB_ACK_MASK)) +#define BB_END(x) (BB_OFFSET(x) + BB_LEN(x)) #define BB_MAKE(a, l, ack) (((a)<<9) | ((l)-1) | ((u64)(!!(ack)) << 63)) /* Bad block numbers are stored sorted in a single page. @@ -41,6 +42,12 @@ struct badblocks { sector_t size; /* in sectors */ }; +struct badblocks_context { + sector_t start; + sector_t len; + int ack; +}; + int badblocks_check(struct badblocks *bb, sector_t s, int sectors, sector_t *first_bad, int *bad_sectors); int badblocks_set(struct badblocks *bb, sector_t s, int sectors, @@ -63,4 +70,27 @@ static inline void devm_exit_badblocks(struct device *dev, struct badblocks *bb) } badblocks_exit(bb); } + +static inline int badblocks_full(struct badblocks *bb) +{ + return (bb->count >= MAX_BADBLOCKS); +} + +static inline int badblocks_empty(struct badblocks *bb) +{ + return (bb->count == 0); +} + +static inline void set_changed(struct badblocks *bb) +{ + if (bb->changed != 1) + bb->changed = 1; +} + +static inline void clear_changed(struct badblocks *bb) +{ + if (bb->changed != 0) + bb->changed = 0; +} + #endif