git: sys/vfs/hammer: Fix and add comments on btree

[Tomohiro Kusumi]

commit 2f49d4c50cae1d6a1370f18b922893f7d87b9b17
Author: Tomohiro Kusumi <kusumi.tomohiro at gmail.com>
Date:   Sun Mar 8 07:46:49 2015 +0900

    sys/vfs/hammer: Fix and add comments on btree
    
    - hunk1-2: These two seem to be old ones. At this point *node is
      a pointer to cursor->node->ondisk which is not invalid or stale.
    
    - hunk3: This isn't necessary since now this function just returns
      EINVAL if the cursor's node is internal. It didn't have this check
      when this comment was written.
    
    - hunk4: It's hammer_btree_lookup() that could return ENOSPC when
      no space is available, but not this function. Moving this comment
      to the previous paragraph makes better sense.
    
    - hunk5: Leaf nodes have no idea of boundaries to start with so
      replace it with the comment being used in hammer_btree_delete()
      which also deals with bcopy() of elements.
    
    - hunk6: Fix a typo.
    
    - hunk7: Refer to a leaf node's count in addition to internal node.

Summary of changes:
 sys/vfs/hammer/hammer_btree.c | 16 +++-------------
 sys/vfs/hammer/hammer_btree.h |  3 ++-
 2 files changed, 5 insertions(+), 14 deletions(-)

http://gitweb.dragonflybsd.org/dragonfly.git/commitdiff/2f49d4c50cae1d6a1370f18b922893f7d87b9b17


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