Merge tag 'xfs-4.11-fixes-1' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux

Merge tag 'xfs-4.11-fixes-1' of git://git./fs/xfs/xfs-linux

Pull xfs fixes from Darrick Wong:
 "Here are some bug fixes for -rc2 to clean up the copy on write
  handling and to remove a cause of hangs.

   - Fix various iomap bugs

   - Fix overly aggressive CoW preallocation garbage collection

   - Fixes to CoW endio error handling

   - Fix some incorrect geometry calculations

   - Remove a potential system hang in bulkstat

   - Try to allocate blocks more aggressively to reduce ENOSPC errors"

* tag 'xfs-4.11-fixes-1' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux:
  xfs: try any AG when allocating the first btree block when reflinking
  xfs: use iomap new flag for newly allocated delalloc blocks
  xfs: remove kmem_zalloc_greedy
  xfs: Use xfs_icluster_size_fsb() to calculate inode alignment mask
  xfs: fix and streamline error handling in xfs_end_io
  xfs: only reclaim unwritten COW extents periodically
  iomap: invalidate page caches should be after iomap_dio_complete() in direct write