From mboxrd@z Thu Jan 1 00:00:00 1970 From: Chao Yu Subject: [PATCH 2/2] f2fs: fix incorrect range->len in f2fs_trim_fs() Date: Sun, 5 Aug 2018 23:09:00 +0800 Message-ID: <20180805150900.9941-2-chao@kernel.org> References: <20180805150900.9941-1-chao@kernel.org> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from [172.30.20.202] (helo=mx.sourceforge.net) by sfs-ml-4.v29.lw.sourceforge.com with esmtps (TLSv1.2:ECDHE-RSA-AES256-GCM-SHA384:256) (Exim 4.90_1) (envelope-from ) id 1fmKfR-0004Xd-Pt for linux-f2fs-devel@lists.sourceforge.net; Sun, 05 Aug 2018 15:10:01 +0000 Received: from mail.kernel.org ([198.145.29.99]) by sfi-mx-1.v28.lw.sourceforge.com with esmtps (TLSv1.2:ECDHE-RSA-AES256-GCM-SHA384:256) (Exim 4.90_1) id 1fmKfQ-00ACJI-DV for linux-f2fs-devel@lists.sourceforge.net; Sun, 05 Aug 2018 15:10:01 +0000 In-Reply-To: <20180805150900.9941-1-chao@kernel.org> List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: linux-f2fs-devel-bounces@lists.sourceforge.net To: jaegeuk@kernel.org Cc: linux-kernel@vger.kernel.org, linux-f2fs-devel@lists.sourceforge.net From: Chao Yu generic/260 reported below error: [+] Default length with start set (should succeed) [+] Length beyond the end of fs (should succeed) [+] Length beyond the end of fs with start set (should succeed) +./tests/generic/260: line 94: [: 18446744073709551615: integer expression expected +./tests/generic/260: line 104: [: 18446744073709551615: integer expression expected Test done ... In f2fs_trim_fs(), if there is no discard being trimmed, we need to correct range->len before return. Signed-off-by: Chao Yu --- fs/f2fs/segment.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c index 24b7147456e9..7b470a1fe92b 100644 --- a/fs/f2fs/segment.c +++ b/fs/f2fs/segment.c @@ -2626,8 +2626,9 @@ int f2fs_trim_fs(struct f2fs_sb_info *sbi, struct fstrim_range *range) trimmed += __wait_discard_cmd_range(sbi, &dpolicy, start_block, end_block); - range->len = F2FS_BLK_TO_BYTES(trimmed); out: + if (!err) + range->len = F2FS_BLK_TO_BYTES(trimmed); return err; } -- 2.18.0 ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot