diff --git a/fs/reiserfs/ioctl.c b/fs/reiserfs/ioctl.c
index 74363a7aacbcb64154c81b1f6bcb832e0fee8727..830332021ed47bd33e5dca5d903f5725db1ba7c5 100644
--- a/fs/reiserfs/ioctl.c
+++ b/fs/reiserfs/ioctl.c
@@ -12,8 +12,6 @@
 #include <linux/smp_lock.h>
 #include <linux/compat.h>
 
-static int reiserfs_unpack(struct inode *inode, struct file *filp);
-
 /*
 ** reiserfs_ioctl - handler for ioctl for inode
 ** supported commands:
@@ -159,7 +157,7 @@ int reiserfs_prepare_write(struct file *f, struct page *page,
 ** Function try to convert tail from direct item into indirect.
 ** It set up nopack attribute in the REISERFS_I(inode)->nopack
 */
-static int reiserfs_unpack(struct inode *inode, struct file *filp)
+int reiserfs_unpack(struct inode *inode, struct file *filp)
 {
 	int retval = 0;
 	int index;
diff --git a/fs/reiserfs/super.c b/fs/reiserfs/super.c
index a4c9770a6012db12a8f531a05a96f3f908daa3b7..ed424d708e6987777b4a2085f88d81df651c86a8 100644
--- a/fs/reiserfs/super.c
+++ b/fs/reiserfs/super.c
@@ -2025,6 +2025,7 @@ static int reiserfs_quota_on(struct super_block *sb, int type, int format_id,
 {
 	int err;
 	struct nameidata nd;
+	struct inode *inode;
 
 	if (!(REISERFS_SB(sb)->s_mount_opt & (1 << REISERFS_QUOTA)))
 		return -EINVAL;
@@ -2039,12 +2040,18 @@ static int reiserfs_quota_on(struct super_block *sb, int type, int format_id,
 		path_put(&nd.path);
 		return -EXDEV;
 	}
+	inode = nd.path.dentry->d_inode;
 	/* We must not pack tails for quota files on reiserfs for quota IO to work */
-	if (!(REISERFS_I(nd.path.dentry->d_inode)->i_flags & i_nopack_mask)) {
-		reiserfs_warning(sb,
-				 "reiserfs: Quota file must have tail packing disabled.");
-		path_put(&nd.path);
-		return -EINVAL;
+	if (!(REISERFS_I(inode)->i_flags & i_nopack_mask)) {
+		err = reiserfs_unpack(inode, NULL);
+		if (err) {
+			reiserfs_warning(sb,
+				"reiserfs: Unpacking tail of quota file failed"
+				" (%d). Cannot turn on quotas.", err);
+			path_put(&nd.path);
+			return -EINVAL;
+		}
+		mark_inode_dirty(inode);
 	}
 	/* Not journalling quota? No more tests needed... */
 	if (!REISERFS_SB(sb)->s_qf_names[USRQUOTA] &&
diff --git a/include/linux/reiserfs_fs.h b/include/linux/reiserfs_fs.h
index 8e7eff2cd0ab44d78d0ddc021ad3275459f34f9d..4aacaeecb56f503adf60a680710b46fc485a39d4 100644
--- a/include/linux/reiserfs_fs.h
+++ b/include/linux/reiserfs_fs.h
@@ -2176,6 +2176,7 @@ int reiserfs_ioctl(struct inode *inode, struct file *filp,
 		   unsigned int cmd, unsigned long arg);
 long reiserfs_compat_ioctl(struct file *filp,
 		   unsigned int cmd, unsigned long arg);
+int reiserfs_unpack(struct inode *inode, struct file *filp);
 
 /* ioctl's command */
 #define REISERFS_IOC_UNPACK		_IOW(0xCD,1,long)