[Xenial SRU][PATCH 0/3] Fix CVE-2015-8952

[Shrirang Bagul]

This set of patches fixes CVE-2015-8952. The mbcache2 implementation and
ext2 patches are a clean cherry-pick from upstream. The ext4 patch however
is a backport to accomodate changes from patch:
  ext4: lock the xattr block before checksuming it
  (c6d5612f80923170dad06c04736984cc9bcc8568)
merged to fix LP:1658633

Jan Kara (3):
  mbcache2: reimplement mbcache
  ext2: convert to mbcache2
  ext4: convert to mbcache2

 fs/Makefile              |   2 +-
 fs/ext2/ext2.h           |   3 +
 fs/ext2/super.c          |  25 ++--
 fs/ext2/xattr.c          | 143 +++++++++----------
 fs/ext2/xattr.h          |  21 +--
 fs/ext4/ext4.h           |   2 +-
 fs/ext4/super.c          |   7 +-
 fs/ext4/xattr.c          | 136 +++++++++---------
 fs/ext4/xattr.h          |   5 +-
 fs/mbcache2.c            | 359 +++++++++++++++++++++++++++++++++++++++++++++++
 include/linux/mbcache2.h |  50 +++++++
 11 files changed, 577 insertions(+), 176 deletions(-)
 create mode 100644 fs/mbcache2.c
 create mode 100644 include/linux/mbcache2.h

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2.11.0