From patchwork Mon Dec 23 08:10:42 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yi Sun X-Patchwork-Id: 13918590 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 lists.sourceforge.net (lists.sourceforge.net [216.105.38.7]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 10E08E7718E for ; Mon, 23 Dec 2024 08:13:01 +0000 (UTC) Received: from [127.0.0.1] (helo=sfs-ml-3.v29.lw.sourceforge.com) by sfs-ml-3.v29.lw.sourceforge.com with esmtp (Exim 4.95) (envelope-from ) id 1tPdYj-0001yp-A0; Mon, 23 Dec 2024 08:13:00 +0000 Received: from [172.30.29.66] (helo=mx.sourceforge.net) by sfs-ml-3.v29.lw.sourceforge.com with esmtps (TLS1.2) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.95) (envelope-from ) id 1tPdYe-0001yc-Jr for linux-f2fs-devel@lists.sourceforge.net; Mon, 23 Dec 2024 08:12:56 +0000 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=sourceforge.net; s=x; h=Content-Type:Content-Transfer-Encoding:MIME-Version :References:In-Reply-To:Message-ID:Date:Subject:CC:To:From:Sender:Reply-To: Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender: Resent-To:Resent-Cc:Resent-Message-ID:List-Id:List-Help:List-Unsubscribe: List-Subscribe:List-Post:List-Owner:List-Archive; bh=tBPJUD/i01YeHKBufRYjuqyeoaigV7jzuc5Q+m4+X6I=; b=Ci9IUs31fky7wIQWgBkRWE0R3k St8YMj7l+H3VHNdFgPI4JPOb9Nndpit56MTCKPjWicekD1vDz1VSDV3LK4Bcb7l5LR741h2nGovzq nyUQILAVt5pEwXd8hOKRcMUEtDNZdLtYH3AdNNTdrdA/F/A+eZd7HgsSu7TuhcCM4zwE=; DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=sf.net; s=x ; h=Content-Type:Content-Transfer-Encoding:MIME-Version:References: In-Reply-To:Message-ID:Date:Subject:CC:To:From:Sender:Reply-To:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:List-Id:List-Help:List-Unsubscribe:List-Subscribe: List-Post:List-Owner:List-Archive; bh=tBPJUD/i01YeHKBufRYjuqyeoaigV7jzuc5Q+m4+X6I=; b=MllPm2iyNQEE+MHdlnqr5NVw+M SlDw5XPl3281prwGBoXK08YmqHpu+YJdGcoEHxzGSXVHm5Tj+mcgpNx/oV9DKqcA70F/KVB4uEJzg nJ/soqdmM5tZ6Kwh7JRTgnFowhEg/OLz4HXCpDUFfRXcVYsz6D7xSBH5Jf08KKJbgOTo=; Received: from mx1.unisoc.com ([222.66.158.135] helo=SHSQR01.spreadtrum.com) by sfi-mx-2.v28.lw.sourceforge.com with esmtps (TLS1.2:ECDHE-RSA-AES256-GCM-SHA384:256) (Exim 4.95) id 1tPdYd-0007EW-04 for linux-f2fs-devel@lists.sourceforge.net; Mon, 23 Dec 2024 08:12:55 +0000 Received: from dlp.unisoc.com ([10.29.3.86]) by SHSQR01.spreadtrum.com with ESMTP id 4BN8Aoh4033354; Mon, 23 Dec 2024 16:10:50 +0800 (+08) (envelope-from Yi.Sun@unisoc.com) Received: from SHDLP.spreadtrum.com (bjmbx02.spreadtrum.com [10.0.64.8]) by dlp.unisoc.com (SkyGuard) with ESMTPS id 4YGrHs1XbLz2MnTyj; Mon, 23 Dec 2024 16:08:25 +0800 (CST) Received: from tj10379pcu1.spreadtrum.com (10.5.32.15) by BJMBX02.spreadtrum.com (10.0.64.8) with Microsoft SMTP Server (TLS) id 15.0.1497.23; Mon, 23 Dec 2024 16:10:48 +0800 From: Yi Sun To: , Date: Mon, 23 Dec 2024 16:10:42 +0800 Message-ID: <20241223081044.1126291-3-yi.sun@unisoc.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20241223081044.1126291-1-yi.sun@unisoc.com> References: <20241223081044.1126291-1-yi.sun@unisoc.com> MIME-Version: 1.0 X-Originating-IP: [10.5.32.15] X-ClientProxiedBy: SHCAS03.spreadtrum.com (10.0.1.207) To BJMBX02.spreadtrum.com (10.0.64.8) X-MAIL: SHSQR01.spreadtrum.com 4BN8Aoh4033354 X-Headers-End: 1tPdYd-0007EW-04 Subject: [f2fs-dev] [PATCH v4 2/4] f2fs: update_sit_entry_for_release() supports consecutive blocks. X-BeenThere: linux-f2fs-devel@lists.sourceforge.net X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: ke.wang@unisoc.com, linux-kernel@vger.kernel.org, linux-f2fs-devel@lists.sourceforge.net, sunyibuaa@gmail.com, yi.sun@unisoc.com, Hao_hao.Wang@unisoc.com Errors-To: linux-f2fs-devel-bounces@lists.sourceforge.net This function can process some consecutive blocks at a time. When using update_sit_entry() to release consecutive blocks, ensure that the consecutive blocks belong to the same segment. Because after update_sit_entry_for_realese(), @segno is still in use in update_sit_entry(). Signed-off-by: Yi Sun Reviewed-by: Chao Yu --- fs/f2fs/segment.c | 75 ++++++++++++++++++++++++++++------------------- 1 file changed, 45 insertions(+), 30 deletions(-) diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c index bc761d9b889a..67d2859831e4 100644 --- a/fs/f2fs/segment.c +++ b/fs/f2fs/segment.c @@ -2426,6 +2426,10 @@ static void update_segment_mtime(struct f2fs_sb_info *sbi, block_t blkaddr, SIT_I(sbi)->max_mtime = ctime; } +/* + * NOTE: when updating multiple blocks at the same time, please ensure + * that the consecutive input blocks belong to the same segment. + */ static int update_sit_entry_for_release(struct f2fs_sb_info *sbi, struct seg_entry *se, block_t blkaddr, unsigned int offset, int del) { @@ -2433,42 +2437,48 @@ static int update_sit_entry_for_release(struct f2fs_sb_info *sbi, struct seg_ent #ifdef CONFIG_F2FS_CHECK_FS bool mir_exist; #endif + int i; + int del_count = -del; + + f2fs_bug_on(sbi, GET_SEGNO(sbi, blkaddr) != GET_SEGNO(sbi, blkaddr + del_count - 1)); - exist = f2fs_test_and_clear_bit(offset, se->cur_valid_map); + for (i = 0; i < del_count; i++) { + exist = f2fs_test_and_clear_bit(offset + i, se->cur_valid_map); #ifdef CONFIG_F2FS_CHECK_FS - mir_exist = f2fs_test_and_clear_bit(offset, - se->cur_valid_map_mir); - if (unlikely(exist != mir_exist)) { - f2fs_err(sbi, "Inconsistent error when clearing bitmap, blk:%u, old bit:%d", - blkaddr, exist); - f2fs_bug_on(sbi, 1); - } + mir_exist = f2fs_test_and_clear_bit(offset + i, + se->cur_valid_map_mir); + if (unlikely(exist != mir_exist)) { + f2fs_err(sbi, "Inconsistent error when clearing bitmap, blk:%u, old bit:%d", + blkaddr + i, exist); + f2fs_bug_on(sbi, 1); + } #endif - if (unlikely(!exist)) { - f2fs_err(sbi, "Bitmap was wrongly cleared, blk:%u", blkaddr); - f2fs_bug_on(sbi, 1); - se->valid_blocks++; - del = 0; - } else if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED))) { - /* - * If checkpoints are off, we must not reuse data that - * was used in the previous checkpoint. If it was used - * before, we must track that to know how much space we - * really have. - */ - if (f2fs_test_bit(offset, se->ckpt_valid_map)) { - spin_lock(&sbi->stat_lock); - sbi->unusable_block_count++; - spin_unlock(&sbi->stat_lock); + if (unlikely(!exist)) { + f2fs_err(sbi, "Bitmap was wrongly cleared, blk:%u", blkaddr + i); + f2fs_bug_on(sbi, 1); + se->valid_blocks++; + del += 1; + } else if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED))) { + /* + * If checkpoints are off, we must not reuse data that + * was used in the previous checkpoint. If it was used + * before, we must track that to know how much space we + * really have. + */ + if (f2fs_test_bit(offset + i, se->ckpt_valid_map)) { + spin_lock(&sbi->stat_lock); + sbi->unusable_block_count++; + spin_unlock(&sbi->stat_lock); + } } - } - if (f2fs_block_unit_discard(sbi) && - f2fs_test_and_clear_bit(offset, se->discard_map)) - sbi->discard_blks++; + if (f2fs_block_unit_discard(sbi) && + f2fs_test_and_clear_bit(offset + i, se->discard_map)) + sbi->discard_blks++; - if (!f2fs_test_bit(offset, se->ckpt_valid_map)) - se->ckpt_valid_blocks += del; + if (!f2fs_test_bit(offset + i, se->ckpt_valid_map)) + se->ckpt_valid_blocks -= 1; + } return del; } @@ -2517,6 +2527,11 @@ static int update_sit_entry_for_alloc(struct f2fs_sb_info *sbi, struct seg_entry return del; } +/* + * If releasing blocks, this function supports updating multiple consecutive blocks + * at one time, but please note that these consecutive blocks need to belong to the + * same segment. + */ static void update_sit_entry(struct f2fs_sb_info *sbi, block_t blkaddr, int del) { struct seg_entry *se;