Merge tag 'ceph-for-4.12-rc1' of git://github.com/ceph/ceph-client

Pull ceph updates from Ilya Dryomov:
 "The two main items are support for disabling automatic rbd exclusive
  lock transfers from myself and the long awaited -ENOSPC handling
  series from Jeff.

  The former will allow rbd users to take advantage of exclusive lock's
  built-in blacklist/break-lock functionality while staying in control
  of who owns the lock. With the latter in place, we will abort
  filesystem writes on -ENOSPC instead of having them block
  indefinitely.

  Beyond that we've got the usual pile of filesystem fixes from Zheng,
  some refcount_t conversion patches from Elena and a patch for an
  ancient open() flags handling bug from Alexander"

* tag 'ceph-for-4.12-rc1' of git://github.com/ceph/ceph-client: (31 commits)
  ceph: fix memory leak in __ceph_setxattr()
  ceph: fix file open flags on ppc64
  ceph: choose readdir frag based on previous readdir reply
  rbd: exclusive map option
  rbd: return ResponseMessage result from rbd_handle_request_lock()
  rbd: kill rbd_is_lock_supported()
  rbd: support updating the lock cookie without releasing the lock
  rbd: store lock cookie
  rbd: ignore unlock errors
  rbd: fix error handling around rbd_init_disk()
  rbd: move rbd_unregister_watch() call into rbd_dev_image_release()
  rbd: move rbd_dev_destroy() call out of rbd_dev_image_release()
  ceph: when seeing write errors on an inode, switch to sync writes
  Revert "ceph: SetPageError() for writeback pages if writepages fails"
  ceph: handle epoch barriers in cap messages
  libceph: add an epoch_barrier field to struct ceph_osd_client
  libceph: abort already submitted but abortable requests when map or pool goes full
  libceph: allow requests to return immediately on full conditions if caller wishes
  libceph: remove req->r_replay_version
  ceph: make seeky readdir more efficient
  ...

diff --cc drivers/block/rbd.c
Simple merge

diff --cc fs/ceph/addr.c
index 9ecb2fd,e253102..1e71e6c
--- 1/fs/ceph/addr.c
--- 2/fs/ceph/addr.c
+++ b/fs/ceph/addr.c
@@@ -700,12 -704,9 +704,9 @@@ static void writepages_finish(struct ce
                        if (atomic_long_dec_return(&fsc->writeback_count) <
                             CONGESTION_OFF_THRESH(
                                        fsc->mount_options->congestion_kb))
 -                              clear_bdi_congested(&fsc->backing_dev_info,
 +                              clear_bdi_congested(inode_to_bdi(inode),
                                                    BLK_RW_ASYNC);
  
-                       if (rc < 0)
-                               SetPageError(page);
- 
                        ceph_put_snap_context(page_snap_context(page));
                        page->private = 0;
                        ClearPagePrivate(page);

diff --cc fs/ceph/debugfs.c
Simple merge

diff --cc fs/ceph/file.c
Simple merge

diff --cc fs/ceph/mds_client.c
Simple merge

diff --cc fs/ceph/super.c
Simple merge

diff --cc fs/ceph/super.h
Simple merge

diff --cc net/ceph/ceph_common.c
Simple merge

diff --cc net/ceph/osd_client.c
Simple merge