From patchwork Mon Sep 13 16:36:37 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Coly Li X-Patchwork-Id: 12490113 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 DF4B33FD6 for ; Mon, 13 Sep 2021 16:38:21 +0000 (UTC) Received: from relay2.suse.de (relay2.suse.de [149.44.160.134]) by smtp-out2.suse.de (Postfix) with ESMTP id 73C6C20007; Mon, 13 Sep 2021 16:38:20 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_rsa; t=1631551100; 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=zRaFCkoSthGoCjkkPXvRjFDqiuQYb4slnaFkxKz+TyU=; b=2HIdOUIzyKR04FClgFsoqResbuxL6Q+Tdpiu+9HFvgxg1CQL+bwWW+UJeuDlTVBgjIfQTL J87c59gMvUB31cK0+FOu856SL+OJRrpOZlY6KLt/QV9BhhFonLA75UwInvKImMsGC0+wWR mZVog1lDInCwqAkhx7E+3d8fl4Fywr0= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_ed25519; t=1631551100; 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=zRaFCkoSthGoCjkkPXvRjFDqiuQYb4slnaFkxKz+TyU=; b=4wNuUlw36WyR6YGx1QOiXV6B/Cvj02g1082Fv9tzFqbukizcg4M7IvRSYcLV8vmpav2+i5 qv0RIRg0QxUkbNBg== Received: from localhost.localdomain (unknown [10.163.16.22]) by relay2.suse.de (Postfix) with ESMTP id 7FFDFA3B97; Mon, 13 Sep 2021 16:38:14 +0000 (UTC) From: Coly Li To: linux-kernel@vger.kernel.org, linux-block@vger.kernel.org, linux-raid@vger.kernel.org, nvdimm@lists.linux.dev Cc: antlists@youngman.org.uk, Coly Li , Dan Williams , Hannes Reinecke , Jens Axboe , NeilBrown , Richard Fan , Vishal L Verma Subject: [PATCH v3 1/6] badblocks: add more helper structure and routines in badblocks.h Date: Tue, 14 Sep 2021 00:36:37 +0800 Message-Id: <20210913163643.10233-2-colyli@suse.de> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210913163643.10233-1-colyli@suse.de> References: <20210913163643.10233-1-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 culculate 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: Hannes Reinecke Cc: Jens Axboe Cc: NeilBrown Cc: Richard Fan Cc: Vishal L Verma --- include/linux/badblocks.h | 32 ++++++++++++++++++++++++++++++++ 1 file changed, 32 insertions(+) diff --git a/include/linux/badblocks.h b/include/linux/badblocks.h index 2426276b9bd3..166161842d1f 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 +42,14 @@ struct badblocks { sector_t size; /* in sectors */ }; +struct badblocks_context { + sector_t start; + sector_t len; + int ack; + sector_t orig_start; + sector_t orig_len; +}; + 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 +72,27 @@ 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