Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752011AbdHHEMo (ORCPT ); Tue, 8 Aug 2017 00:12:44 -0400 Received: from szxga05-in.huawei.com ([45.249.212.191]:2577 "EHLO szxga05-in.huawei.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750727AbdHHEMm (ORCPT ); Tue, 8 Aug 2017 00:12:42 -0400 From: Yunlong Song To: , , , , CC: , , , , Subject: [PATCH] f2fs: fix some cases with reserved_blocks Date: Tue, 8 Aug 2017 12:12:28 +0800 Message-ID: <1502165548-2023-1-git-send-email-yunlong.song@huawei.com> X-Mailer: git-send-email 1.8.5.2 MIME-Version: 1.0 Content-Type: text/plain X-Originating-IP: [10.107.193.250] X-CFilter-Loop: Reflected X-Mirapoint-Virus-RAPID-Raw: score=unknown(0), refid=str=0001.0A090201.59893A38.0081,ss=1,re=0.000,recu=0.000,reip=0.000,cl=1,cld=1,fgs=0, ip=0.0.0.0, so=2014-11-16 11:51:01, dmn=2013-03-21 17:37:32 X-Mirapoint-Loop-Id: 0254364543df29313e5bd7b50e4caf25 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2043 Lines: 55 Signed-off-by: Yunlong Song --- fs/f2fs/recovery.c | 3 ++- fs/f2fs/super.c | 9 +++++---- 2 files changed, 7 insertions(+), 5 deletions(-) diff --git a/fs/f2fs/recovery.c b/fs/f2fs/recovery.c index a3d0261..e288319 100644 --- a/fs/f2fs/recovery.c +++ b/fs/f2fs/recovery.c @@ -51,7 +51,8 @@ bool space_for_roll_forward(struct f2fs_sb_info *sbi) { s64 nalloc = percpu_counter_sum_positive(&sbi->alloc_valid_block_count); - if (sbi->last_valid_block_count + nalloc > sbi->user_block_count) + if (sbi->last_valid_block_count + nalloc + + sbi->reserved_blocks > sbi->user_block_count) return false; return true; } diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c index 4c1bdcb..c644bf5 100644 --- a/fs/f2fs/super.c +++ b/fs/f2fs/super.c @@ -946,6 +946,7 @@ static int f2fs_statfs(struct dentry *dentry, struct kstatfs *buf) u64 id = huge_encode_dev(sb->s_bdev->bd_dev); block_t total_count, user_block_count, start_count, ovp_count; u64 avail_node_count; + block_t avail_user_block_count; total_count = le64_to_cpu(sbi->raw_super->block_count); user_block_count = sbi->user_block_count; @@ -953,16 +954,16 @@ static int f2fs_statfs(struct dentry *dentry, struct kstatfs *buf) ovp_count = SM_I(sbi)->ovp_segments << sbi->log_blocks_per_seg; buf->f_type = F2FS_SUPER_MAGIC; buf->f_bsize = sbi->blocksize; + avail_user_block_count = user_block_count - sbi->reserved_blocks; buf->f_blocks = total_count - start_count; buf->f_bfree = user_block_count - valid_user_blocks(sbi) + ovp_count; - buf->f_bavail = user_block_count - valid_user_blocks(sbi) - - sbi->reserved_blocks; + buf->f_bavail = avail_user_block_count - valid_user_blocks(sbi); avail_node_count = sbi->total_node_count - F2FS_RESERVED_NODE_NUM; - if (avail_node_count > user_block_count) { - buf->f_files = user_block_count; + if (avail_node_count > avail_user_block_count) { + buf->f_files = avail_user_block_count; buf->f_ffree = buf->f_bavail; } else { buf->f_files = avail_node_count; -- 1.8.5.2