[GIT PULL] ext4 updates for 4.21-rc1

["Theodore Y. Ts'o" <tytso@mit.edu>]

The following changes since commit 2e6e902d185027f8e3cb8b7305238f7e35d6a436:

  Linux 4.20-rc4 (2018-11-25 14:19:31 -0800)

are available in the Git repository at:

  git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4.git tags/ext4_for_linus

for you to fetch changes up to 18f2c4fcebf2582f96cbd5f2238f4f354a0e4847:

  ext4: check for shutdown and r/o file system in ext4_write_inode() (2018-12-19 14:36:58 -0500)

----------------------------------------------------------------
All cleanups and bug fixes; most notably, fix some problems discovered
in ext4's NFS support, and fix an ioctl (EXT4_IOC_GROUP_ADD) used by
old versions of e2fsprogs which we accidentally broke a while back.
Also fixed some error paths in ext4's quota and inline data support.
Finally, improve tail latency in jbd2's commit code.

----------------------------------------------------------------
Alexander Lochmann (1):
      jbd2: update locking documentation for transaction_t

Chengguang Xu (2):
      ext4: remove redundant condition check
      ext4: compare old and new mode before setting update_mode flag

Colin Ian King (2):
      ext4: clean up indentation issues, remove extraneous tabs
      jbd2: clean up indentation issue, replace spaces with tab

Eric Sandeen (1):
      ext4: hard fail dax mount on unsupported devices

Jan Kara (1):
      jbd2: avoid long hold times of j_state_lock while committing a transaction

Maurizio Lombardi (1):
      ext4: missing unlock/put_page() in ext4_try_to_write_inline_data()

Pan Bian (1):
      ext4: fix possible use after free in ext4_quota_enable

Theodore Ts'o (5):
      ext4: add ext4_sb_bread() to disambiguate ENOMEM cases
      ext4: include terminating u32 in size of xattr entries when expanding inodes
      ext4: avoid declaring fs inconsistent due to invalid file handles
      ext4: force inode writes when nfsd calls commit_metadata()
      ext4: check for shutdown and r/o file system in ext4_write_inode()

ruippan (潘睿) (1):
      ext4: fix EXT4_IOC_GROUP_ADD ioctl

 fs/ext4/acl.c               |  3 +-
 fs/ext4/ext4.h              | 17 ++++++++-
 fs/ext4/ialloc.c            |  2 +-
 fs/ext4/inline.c            |  5 ++-
 fs/ext4/inode.c             | 63 +++++++++++++++++++++----------
 fs/ext4/ioctl.c             |  2 +-
 fs/ext4/migrate.c           | 48 ++++++++++++------------
 fs/ext4/namei.c             |  4 +-
 fs/ext4/resize.c            | 79 +++++++++++++++++++--------------------
 fs/ext4/super.c             | 92 ++++++++++++++++++++++++++++------------------
 fs/ext4/xattr.c             | 83 ++++++++++++++++++++---------------------
 fs/jbd2/commit.c            |  3 ++
 fs/jbd2/transaction.c       | 45 ++++++++++++++++++++---
 include/linux/jbd2.h        |  7 ++--
 include/trace/events/ext4.h | 20 ++++++++++
 15 files changed, 296 insertions(+), 177 deletions(-)