linux-kernel - [PATCH 4.17 074/336] f2fs: fix to detect failure of dquot

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Message-Id: <20180801165031.966521772@linuxfoundation.org>
Date:   Wed,  1 Aug 2018 18:46:49 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Chao Yu <yuchao0@...wei.com>,
        Jaegeuk Kim <jaegeuk@...nel.org>,
        Sasha Levin <alexander.levin@...rosoft.com>
Subject: [PATCH 4.17 074/336] f2fs: fix to detect failure of dquot_initialize

4.17-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Chao Yu <yuchao0@...wei.com>

[ Upstream commit c22aecd75919511abea872b201751e0be1add898 ]

dquot_initialize() can fail due to any exception inside quota subsystem,
f2fs needs to be aware of it, and return correct return value to caller.

Signed-off-by: Chao Yu <yuchao0@...wei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@...nel.org>
Signed-off-by: Sasha Levin <alexander.levin@...rosoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 fs/f2fs/file.c |    4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

--- a/fs/f2fs/file.c
+++ b/fs/f2fs/file.c
@@ -2571,7 +2571,9 @@ static int f2fs_ioc_setproject(struct fi
 	}
 	f2fs_put_page(ipage, 1);
 
-	dquot_initialize(inode);
+	err = dquot_initialize(inode);
+	if (err)
+		goto out_unlock;
 
 	transfer_to[PRJQUOTA] = dqget(sb, make_kqid_projid(kprojid));
 	if (!IS_ERR(transfer_to[PRJQUOTA])) {