Merge tag 'ext4_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4

Pull ext4 updates from Ted Ts'o:
 "Convert ext4 to use the new mount API, and add support for the
  FS_IOC_GETFSLABEL and FS_IOC_SETFSLABEL ioctls.

  In addition the usual large number of clean ups and bug fixes, in
  particular for the fast_commit feature"

* tag 'ext4_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4: (48 commits)
  ext4: don't use the orphan list when migrating an inode
  ext4: use BUG_ON instead of if condition followed by BUG
  ext4: fix a copy and paste typo
  ext4: set csum seed in tmp inode while migrating to extents
  ext4: remove unnecessary 'offset' assignment
  ext4: remove redundant o_start statement
  ext4: drop an always true check
  ext4: remove unused assignments
  ext4: remove redundant statement
  ext4: remove useless resetting io_end_size in mpage_process_page()
  ext4: allow to change s_last_trim_minblks via sysfs
  ext4: change s_last_trim_minblks type to unsigned long
  ext4: implement support for get/set fs label
  ext4: only set EXT4_MOUNT_QUOTA when journalled quota file is specified
  ext4: don't use kfree() on rcu protected pointer sbi->s_qf_names
  ext4: avoid trim error on fs with small groups
  ext4: fix an use-after-free issue about data=journal writeback mode
  ext4: fix null-ptr-deref in '__ext4_journal_ensure_credits'
  ext4: initialize err_blk before calling __ext4_get_inode_loc
  ext4: fix a possible ABBA deadlock due to busy PA
  ...