From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 6E91E2002DD; Sun, 24 Mar 2024 23:18:17 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1711322298; cv=none; b=Io5gK9mx/+5kaoxdaFpy1JYFxLQ99zH+2gvEDvLBE4MlUe/Qu3tx2if8KgX073BRooDg/OzErXH3MXi/6BcmEDlBi8xdUM3QwKnm9JrvxhydtCZqKXlsHFt6ayuVlNPczWTEfYHhyUI/+hg/XlUKXsu0225yPVuD/DKiL420cOU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1711322298; c=relaxed/simple; bh=/bXkY6dK5NCiDQ0gc7WTqr8VejKapTB/nJwPlB62Ets=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=VbjA0TscumuSCcq81GENopdEvKKW2Gs9w0BY9mbU6giUfGtggR8ZCLQf6JXAmjnoTRdw5640agTf09Tcs8u94daE139X4F6qyXJTCAhH6VgdZH1iBwBZBtShwm+/A7GaqB/k375WPB+Av+4MKv1HtyXW3ICl4n8Xmk6AmdzXBhc= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=qJQCEJYh; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="qJQCEJYh" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 7C02DC433A6; Sun, 24 Mar 2024 23:18:16 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1711322297; bh=/bXkY6dK5NCiDQ0gc7WTqr8VejKapTB/nJwPlB62Ets=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=qJQCEJYhdrae5R/v7UWP4yfqHso0fN6vwBpTEXeA7Tl7vlNcqy+wV/kcqqdIH9ueo jBmQ8Yz2ylBrMi/3YpWKDiG4jb0qVYaI1qy7XvgYnLY4TrevihOK9Rg+eHx2USIaON CBnbh1hI1jGKkkDCK1FZA8bAc0rHo9pfZ0DvKLmZhtnG1A2sMl0ONR1CPFE0FwuBce EGde/HgDqND5ghlyU3MDz+yfj2UD4L8dZXzUiN8SLh3j404hjHKQs25AnK+vUjEYvB v8nEmkJ9sAkkyRzwt9Sfu4sZt3YKtCq+VoNgBaZ75cfNR8hUA8Yz/2n5234x9J37Ul hNI7vaQMy3I1w== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Xiuhong Wang , Zhiguo Niu , Chao Yu , Jaegeuk Kim , Sasha Levin Subject: [PATCH 6.1 380/451] f2fs: compress: fix reserve_cblocks counting error when out of space Date: Sun, 24 Mar 2024 19:10:56 -0400 Message-ID: <20240324231207.1351418-381-sashal@kernel.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240324231207.1351418-1-sashal@kernel.org> References: <20240324231207.1351418-1-sashal@kernel.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit From: Xiuhong Wang [ Upstream commit 2f6d721e14b69d6e1251f69fa238b48e8374e25f ] When a file only needs one direct_node, performing the following operations will cause the file to be unrepairable: unisoc # ./f2fs_io compress test.apk unisoc #df -h | grep dm-48 /dev/block/dm-48 112G 112G 1.2M 100% /data unisoc # ./f2fs_io release_cblocks test.apk 924 unisoc # df -h | grep dm-48 /dev/block/dm-48 112G 112G 4.8M 100% /data unisoc # dd if=/dev/random of=file4 bs=1M count=3 3145728 bytes (3.0 M) copied, 0.025 s, 120 M/s unisoc # df -h | grep dm-48 /dev/block/dm-48 112G 112G 1.8M 100% /data unisoc # ./f2fs_io reserve_cblocks test.apk F2FS_IOC_RESERVE_COMPRESS_BLOCKS failed: No space left on device adb reboot unisoc # df -h | grep dm-48 /dev/block/dm-48 112G 112G 11M 100% /data unisoc # ./f2fs_io reserve_cblocks test.apk 0 This is because the file has only one direct_node. After returning to -ENOSPC, reserved_blocks += ret will not be executed. As a result, the reserved_blocks at this time is still 0, which is not the real number of reserved blocks. Therefore, fsck cannot be set to repair the file. After this patch, the fsck flag will be set to fix this problem. unisoc # df -h | grep dm-48 /dev/block/dm-48 112G 112G 1.8M 100% /data unisoc # ./f2fs_io reserve_cblocks test.apk F2FS_IOC_RESERVE_COMPRESS_BLOCKS failed: No space left on device adb reboot then fsck will be executed unisoc # df -h | grep dm-48 /dev/block/dm-48 112G 112G 11M 100% /data unisoc # ./f2fs_io reserve_cblocks test.apk 924 Fixes: c75488fb4d82 ("f2fs: introduce F2FS_IOC_RESERVE_COMPRESS_BLOCKS") Signed-off-by: Xiuhong Wang Signed-off-by: Zhiguo Niu Reviewed-by: Chao Yu Signed-off-by: Jaegeuk Kim Signed-off-by: Sasha Levin --- fs/f2fs/file.c | 15 +++++++-------- 1 file changed, 7 insertions(+), 8 deletions(-) diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c index 5dbd874ba3d8d..2fbc8d89c600b 100644 --- a/fs/f2fs/file.c +++ b/fs/f2fs/file.c @@ -3561,10 +3561,10 @@ static int f2fs_release_compress_blocks(struct file *filp, unsigned long arg) return ret; } -static int reserve_compress_blocks(struct dnode_of_data *dn, pgoff_t count) +static int reserve_compress_blocks(struct dnode_of_data *dn, pgoff_t count, + unsigned int *reserved_blocks) { struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); - unsigned int reserved_blocks = 0; int cluster_size = F2FS_I(dn->inode)->i_cluster_size; block_t blkaddr; int i; @@ -3628,12 +3628,12 @@ static int reserve_compress_blocks(struct dnode_of_data *dn, pgoff_t count) f2fs_i_compr_blocks_update(dn->inode, compr_blocks, true); - reserved_blocks += reserved; + *reserved_blocks += reserved; next: count -= cluster_size; } - return reserved_blocks; + return 0; } static int f2fs_reserve_compress_blocks(struct file *filp, unsigned long arg) @@ -3694,7 +3694,7 @@ static int f2fs_reserve_compress_blocks(struct file *filp, unsigned long arg) count = min(end_offset - dn.ofs_in_node, last_idx - page_idx); count = round_up(count, F2FS_I(inode)->i_cluster_size); - ret = reserve_compress_blocks(&dn, count); + ret = reserve_compress_blocks(&dn, count, &reserved_blocks); f2fs_put_dnode(&dn); @@ -3702,13 +3702,12 @@ static int f2fs_reserve_compress_blocks(struct file *filp, unsigned long arg) break; page_idx += count; - reserved_blocks += ret; } filemap_invalidate_unlock(inode->i_mapping); f2fs_up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]); - if (ret >= 0) { + if (!ret) { clear_inode_flag(inode, FI_COMPRESS_RELEASED); inode->i_ctime = current_time(inode); f2fs_mark_inode_dirty_sync(inode, true); @@ -3717,7 +3716,7 @@ static int f2fs_reserve_compress_blocks(struct file *filp, unsigned long arg) inode_unlock(inode); mnt_drop_write_file(filp); - if (ret >= 0) { + if (!ret) { ret = put_user(reserved_blocks, (u64 __user *)arg); } else if (reserved_blocks && atomic_read(&F2FS_I(inode)->i_compr_blocks)) { -- 2.43.0