config: add missing CONFIG_EXT4_FS_SUBTREE in kernel config file

After applied ext4 subtree id patch, we need to update kernel config
file to enable it.  But currently there is not CONFIG_EXT4_FS_SUBTREE
entry in kernel config file.  So fix it.

Signed-off-by: Zheng Liu <wenqing.lz@taobao.com>
mm: compaction: fix special case -1 order checks

Prevent division-by-zero panic when compaction was explicitely
requested through the procfs knob: /proc/sys/vm/compact_memory.

Backport from updtream commits 82478fb7 and 3957c776.

Signed-off-by: Sha Zhengju <handai.szj@taobao.com>
Merge pull request #56 from gnehzuil/enable-ext4-subtree

config: add missing CONFIG_EXT4_FS_SUBTREE in kernel config file
mm: compaction: add compaction sysctl

Add a new sysctl to enable/disable memory compaction and
the default is enabled.

Signed-off-by: Sha Zhengju <handai.szj@taobao.com>
Merge pull request #58 from shazj99/compaction

Memory compaction enhancement
Backport "mm: export generic_pipe_buf_*() to modules".

This patch prepfares for LTTng kmods support, the information
of origial patch are:

   commit f0d902f497ee2fb747086322a31925c7fb351d7a
   Author: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
   Date:   Sat Sep 1 17:47:36 2012 -0700

      mm: export generic_pipe_buf_*() to modules

      Backport for 2.6.32.x to 2.6.34.x of commits:

      commit 51921cb746f56983db5a373ca68deb2b0d3ddf01
      Author: Miklos Szeredi <mszeredi@suse.cz>
      Date:   Wed May 26 08:44:22 2010 +0200

         mm: export generic_pipe_buf_*() to modules

         This is needed by fuse device code which wants to create pipe
         buffers.

    Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
    Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>

Backport-by: Ren Zhen Yu <zhenyu.ren@aliyun-inc.com>
Backport "tracing: Let tracepoints have data passed to  tracepoint callbacks"

This prepare for LTTng kmods support. Totally, this patch backports v2.6.35
tracepoint ABI/API to taobao kernel, which is the reason of odd names like
kabi_2635_tracepoint_*().

The information of original commit is:

    commit 2c2a566b64b4254c530fb0c2222b30e8a739bac9
    Author: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
    Date:   Sat Sep 1 17:45:09 2012 -0700

        Backport of commit 38516ab59fbc5b3bb278cf5e1fe2867c70cff32e for
2.6.32.x and 2.6.33.x. Keeping kABI compatibility.

        Signed-off-by: Mathieu Desnoyers
<mathieu.desnoyers@efficios.com>

Backport-by: Ren Zhen Yu <zhenyu.ren@aliyun-inc.com>
acrida: fix memory leak

We use find_get_page() to replace my_get_page() when backing acridafs from
kuafu into ali_kernel, but forget to put_page() after get it.

Signed-off-by: Robin Dong <sanbai@taobao.com>
Merge pull request #59 from RobinDong/dev

acrida: fix memory leak
Merge pull request #60 from Rover-Yu/master

backport v2.6.35 new tracepoint API with ABI compatiblity
Unregister ipmi_pnp_driver if we can't find ipmi_si.

Unregister ipmi_pnp_driver if we can't find ipmi_si.

Signed-off-by: Tao Ma <boyu.mt@taobao.com>
Merge pull request #61 from taoma-tm/ipmi_fix

Unregister ipmi_pnp_driver if we can't find ipmi_si.