Linux-libre 4.2-gnu

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diff --git a/Documentation/filesystems/aufs/design/10dynop.txt b/Documentation/filesystems/aufs/design/10dynop.txt
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--- a/Documentation/filesystems/aufs/design/10dynop.txt
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-
-# Copyright (C) 2010-2015 Junjiro R. Okajima
-#
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; either version 2 of the License, or
-# (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-
-Dynamically customizable FS operations
-----------------------------------------------------------------------
-Generally FS operations (struct inode_operations, struct
-address_space_operations, struct file_operations, etc.) are defined as
-"static const", but it never means that FS have only one set of
-operation. Some FS have multiple sets of them. For instance, ext2 has
-three sets, one for XIP, for NOBH, and for normal.
-Since aufs overrides and redirects these operations, sometimes aufs has
-to change its behaviour according to the branch FS type. More importantly
-VFS acts differently if a function (member in the struct) is set or
-not. It means aufs should have several sets of operations and select one
-among them according to the branch FS definition.
-
-In order to solve this problem and not to affect the behaviour of VFS,
-aufs defines these operations dynamically. For instance, aufs defines
-dummy direct_IO function for struct address_space_operations, but it may
-not be set to the address_space_operations actually. When the branch FS
-doesn't have it, aufs doesn't set it to its address_space_operations
-while the function definition itself is still alive. So the behaviour
-itself will not change, and it will return an error when direct_IO is
-not set.
-
-The lifetime of these dynamically generated operation object is
-maintained by aufs branch object. When the branch is removed from aufs,
-the reference counter of the object is decremented. When it reaches
-zero, the dynamically generated operation object will be freed.
-
-This approach is designed to support AIO (io_submit), Direct I/O and
-XIP (DAX) mainly.
-Currently this approach is applied to address_space_operations for
-regular files only.