Pull misc vfs updates from Al Viro:
 "misc pile"

* tag 'pull-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
  fs: sysv: Fix sysv_nblocks() returns wrong value
  get rid of INT_LIMIT, use type_max() instead
  btrfs: replace INT_LIMIT(loff_t) with OFFSET_MAX
  fs: simplify vfs_get_super
  fs: drop useless condition from inode_needs_update_time