Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client

Pull ceph updates from Sage Weil:
 "This is a big batch.  From Ilya we have:

   - rbd support for more than ~250 mapped devices (now uses same scheme
     that SCSI does for device major/minor numbering)
   - crush updates for new mapping behaviors (will be needed for coming
     erasure coding support, among other things)
   - preliminary support for tiered storage pools

  There is also a big series fixing a pile cephfs bugs with clustered
  MDSs from Yan Zheng, ACL support for cephfs from Guangliang Zhao, ceph
  fscache improvements from Li Wang, improved behavior when we get
  ENOSPC from Josh Durgin, some readv/writev improvements from
  Majianpeng, and the usual mix of small cleanups"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client: (76 commits)
  ceph: cast PAGE_SIZE to size_t in ceph_sync_write()
  ceph: fix dout() compile warnings in ceph_filemap_fault()
  libceph: support CEPH_FEATURE_OSD_CACHEPOOL feature
  libceph: follow redirect replies from osds
  libceph: rename ceph_osd_request::r_{oloc,oid} to r_base_{oloc,oid}
  libceph: follow {read,write}_tier fields on osd request submission
  libceph: add ceph_pg_pool_by_id()
  libceph: CEPH_OSD_FLAG_* enum update
  libceph: replace ceph_calc_ceph_pg() with ceph_oloc_oid_to_pg()
  libceph: introduce and start using oid abstraction
  libceph: rename MAX_OBJ_NAME_SIZE to CEPH_MAX_OID_NAME_LEN
  libceph: move ceph_file_layout helpers to ceph_fs.h
  libceph: start using oloc abstraction
  libceph: dout() is missing a newline
  libceph: add ceph_kv{malloc,free}() and switch to them
  libceph: support CEPH_FEATURE_EXPORT_PEER
  ceph: add imported caps when handling cap export message
  ceph: add open export target session helper
  ceph: remove exported caps when handling cap import message
  ceph: handle session flush message
  ...

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