From: Al Viro <viro@zeniv.linux.org.uk>
Date: Thu, 19 Jul 2012 07:17:49 +0000 (+0400)
Subject: btrfs: switch btrfs_ioctl_balance() to mnt_want_write_file()
X-Git-Tag: v3.6-rc1~18^2~55
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=11e62a8fabd003352e852e74e1b64a437fd908c6;p=profile%2Fivi%2Fkernel-x86-ivi.git

btrfs: switch btrfs_ioctl_balance() to mnt_want_write_file()

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
---

diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c
index 0e92e576300..1e9f6c019ad 100644
--- a/fs/btrfs/ioctl.c
+++ b/fs/btrfs/ioctl.c
@@ -3268,7 +3268,7 @@ static long btrfs_ioctl_balance(struct file *file, void __user *arg)
 	if (fs_info->sb->s_flags & MS_RDONLY)
 		return -EROFS;
 
-	ret = mnt_want_write(file->f_path.mnt);
+	ret = mnt_want_write_file(file);
 	if (ret)
 		return ret;
 
@@ -3338,7 +3338,7 @@ out_bargs:
 out:
 	mutex_unlock(&fs_info->balance_mutex);
 	mutex_unlock(&fs_info->volume_mutex);
-	mnt_drop_write(file->f_path.mnt);
+	mnt_drop_write_file(file);
 	return ret;
 }