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

Pull Ceph updates from Sage Weil:
 "There is quite a bit here, including some overdue refactoring and
  cleanup on the mon_client and osd_client code from Ilya, scattered
  writeback support for CephFS and a pile of bug fixes from Zheng, and a
  few random cleanups and fixes from others"

[ I already decided not to pull this because of it having been rebased
  recently, but ended up changing my mind after all.  Next time I'll
  really hold people to it.  Oh well.   - Linus ]

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client: (34 commits)
  libceph: use KMEM_CACHE macro
  ceph: use kmem_cache_zalloc
  rbd: use KMEM_CACHE macro
  ceph: use lookup request to revalidate dentry
  ceph: kill ceph_get_dentry_parent_inode()
  ceph: fix security xattr deadlock
  ceph: don't request vxattrs from MDS
  ceph: fix mounting same fs multiple times
  ceph: remove unnecessary NULL check
  ceph: avoid updating directory inode's i_size accidentally
  ceph: fix race during filling readdir cache
  libceph: use sizeof_footer() more
  ceph: kill ceph_empty_snapc
  ceph: fix a wrong comparison
  ceph: replace CURRENT_TIME by current_fs_time()
  ceph: scattered page writeback
  libceph: add helper that duplicates last extent operation
  libceph: enable large, variable-sized OSD requests
  libceph: osdc->req_mempool should be backed by a slab pool
  libceph: make r_request msg_size calculation clearer
  ...

Author: torvalds

drivers/block/rbd.c

@@ -1847,14 +1847,12 @@ static void rbd_osd_req_callback(struct ceph_osd_request *osd_req,
 	if (osd_req->r_result < 0)
 		obj_request->result = osd_req->r_result;
 
-	rbd_assert(osd_req->r_num_ops <= CEPH_OSD_MAX_OP);
-
 	/*
 	 * We support a 64-bit length, but ultimately it has to be
 	 * passed to the block layer, which just supports a 32-bit
 	 * length field.
 	 */
-	obj_request->xferred = osd_req->r_reply_op_len[0];
+	obj_request->xferred = osd_req->r_ops[0].outdata_len;
 	rbd_assert(obj_request->xferred < (u64)UINT_MAX);
 
 	opcode = osd_req->r_ops[0].op;
@@ -5643,18 +5641,12 @@ static void rbd_sysfs_cleanup(void)
 static int rbd_slab_init(void)
 {
 	rbd_assert(!rbd_img_request_cache);
-	rbd_img_request_cache = kmem_cache_create("rbd_img_request",
-					sizeof (struct rbd_img_request),
-					__alignof__(struct rbd_img_request),
-					0, NULL);
+	rbd_img_request_cache = KMEM_CACHE(rbd_img_request, 0);
 	if (!rbd_img_request_cache)
 		return -ENOMEM;
 
 	rbd_assert(!rbd_obj_request_cache);
-	rbd_obj_request_cache = kmem_cache_create("rbd_obj_request",
-					sizeof (struct rbd_obj_request),
-					__alignof__(struct rbd_obj_request),
-					0, NULL);
+	rbd_obj_request_cache = KMEM_CACHE(rbd_obj_request, 0);
 	if (!rbd_obj_request_cache)
 		goto out_err;