Add missing kernel-doc comment for the 'bp_ctxt' member variable of
the nilfs_btree_path structure, and eliminate the following warning
output by the kenrel-doc script:

 fs/nilfs2/btree.h:39: warning: Function parameter or struct member
  'bp_ctxt' not described in 'nilfs_btree_path'

Signed-off-by: Ryusuke Konishi <konishi.ryusuke@gmail.com>
---
 fs/nilfs2/btree.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/fs/nilfs2/btree.h b/fs/nilfs2/btree.h
index 92868e1a48ca..2a220f716c91 100644
--- a/fs/nilfs2/btree.h
+++ b/fs/nilfs2/btree.h
@@ -24,6 +24,7 @@
  * @bp_index: index of child node
  * @bp_oldreq: ptr end request for old ptr
  * @bp_newreq: ptr alloc request for new ptr
+ * @bp_ctxt: context information for changing the key of a b-tree node block
  * @bp_op: rebalance operation
  */
 struct nilfs_btree_path {
-- 
2.34.1