commit 2a79f17e4a641a2f463cb512cb0ec349844a147b
author Al Viro <viro@zeniv.linux.org.uk> Fri Dec 09 08:06:57 2011 -0500
committer Al Viro <viro@zeniv.linux.org.uk> Tue Jan 03 22:52:40 2012 -0500
tree 8801127310d0a3492941bb284e83393844a19685
parent 8c9379e972e984d11c2b99121847ba9fa7a0c56c

vfs: mnt_drop_write_file()

new helper (wrapper around mnt_drop_write()) to be used in pair with
mnt_want_write_file().

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

fs/btrfs/ioctl.c

diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c
index 20dd8f3..5441ff1 100644
--- a/fs/btrfs/ioctl.c
+++ b/fs/btrfs/ioctl.c
@@ -259,7 +259,7 @@
 
 	btrfs_end_transaction(trans, root);
 
-	mnt_drop_write(file->f_path.mnt);
+	mnt_drop_write_file(file);
 
 	ret = 0;
  out_unlock:
@@ -1971,7 +1971,7 @@
 	dput(dentry);
 out_unlock_dir:
 	mutex_unlock(&dir->i_mutex);
-	mnt_drop_write(file->f_path.mnt);
+	mnt_drop_write_file(file);
 out:
 	kfree(vol_args);
 	return err;
@@ -2040,7 +2040,7 @@
 		ret = -EINVAL;
 	}
 out:
-	mnt_drop_write(file->f_path.mnt);
+	mnt_drop_write_file(file);
 	return ret;
 }
 
@@ -2510,7 +2510,7 @@
 out_fput:
 	fput(src_file);
 out_drop_write:
-	mnt_drop_write(file->f_path.mnt);
+	mnt_drop_write_file(file);
 	return ret;
 }
 
@@ -2565,7 +2565,7 @@
 
 out_drop:
 	atomic_dec(&root->fs_info->open_ioctl_trans);
-	mnt_drop_write(file->f_path.mnt);
+	mnt_drop_write_file(file);
 out:
 	return ret;
 }
@@ -2800,7 +2800,7 @@
 
 	atomic_dec(&root->fs_info->open_ioctl_trans);
 
-	mnt_drop_write(file->f_path.mnt);
+	mnt_drop_write_file(file);
 	return 0;
 }