linux-ext4 - [PATCH] Ext4: fix project quota accounting without quota limits enabled.

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Message-Id: <1467701890-14687-1-git-send-email-wangshilong1991@gmail.com>
Date:	Tue,  5 Jul 2016 15:58:10 +0900
From:	Wang Shilong <wangshilong1991@...il.com>
To:	linux-ext4@...r.kernel.org
Cc:	lixi@....com, sihara@....com, tytso@....edu, wshilong@....com
Subject: [PATCH] Ext4: fix project quota accounting without quota limits enabled.

From: Wang Shilong <wshilong@....com>

Steps to reproduce:
  #mkfs.ext4 /dev/sda4 -O quota,project
  #mount /dev/sda4 /mnt/test
  #touch /mnt/test/file
  #chattr -p 123 /mnt/test/file
  #quota -v -P 123

Problems is we should always transfer quota accounting whatver
quota limits enabled.

Signed-off-by: Wang Shilong <wshilong@....com>
---
 fs/ext4/ioctl.c | 18 ++++++++----------
 1 file changed, 8 insertions(+), 10 deletions(-)

diff --git a/fs/ext4/ioctl.c b/fs/ext4/ioctl.c
index 28cc412..b5a39b0 100644
--- a/fs/ext4/ioctl.c
+++ b/fs/ext4/ioctl.c
@@ -308,6 +308,7 @@ static int ext4_ioctl_setproject(struct file *filp, __u32 projid)
 	kprojid_t kprojid;
 	struct ext4_iloc iloc;
 	struct ext4_inode *raw_inode;
+	struct dquot *transfer_to[MAXQUOTAS] = { };
 
 	if (!EXT4_HAS_RO_COMPAT_FEATURE(sb,
 			EXT4_FEATURE_RO_COMPAT_PROJECT)) {
@@ -361,17 +362,14 @@ static int ext4_ioctl_setproject(struct file *filp, __u32 projid)
 	if (err)
 		goto out_stop;
 
-	if (sb_has_quota_limits_enabled(sb, PRJQUOTA)) {
-		struct dquot *transfer_to[MAXQUOTAS] = { };
-
-		transfer_to[PRJQUOTA] = dqget(sb, make_kqid_projid(kprojid));
-		if (!IS_ERR(transfer_to[PRJQUOTA])) {
-			err = __dquot_transfer(inode, transfer_to);
-			dqput(transfer_to[PRJQUOTA]);
-			if (err)
-				goto out_dirty;
-		}
+	transfer_to[PRJQUOTA] = dqget(sb, make_kqid_projid(kprojid));
+	if (!IS_ERR(transfer_to[PRJQUOTA])) {
+		err = __dquot_transfer(inode, transfer_to);
+		dqput(transfer_to[PRJQUOTA]);
+		if (err)
+			goto out_dirty;
 	}
+
 	EXT4_I(inode)->i_projid = kprojid;
 	inode->i_ctime = ext4_current_time(inode);
 out_dirty:
-- 
2.7.4

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