git: sys/vfs/hammer2: Fix many comments

[Tomohiro Kusumi]

commit ee92f60939d1e262cef9eac8ff4be09606b1daa7
Author: Tomohiro Kusumi <tkusumi at netbsd.org>
Date:   Fri Nov 4 22:30:18 2022 -0700

    sys/vfs/hammer2: Fix many comments
    
    * "lru_spin; /* inumber lookup */" -> lru_spin isn't for inode.
    
    * "If an error occurred we eat the lock" -> "eat the lock" was
      removed in c603b86b77206805493fc181d3576ecd1786e056 in 2015.
      The rest of the comment (not removed) seems obsolete too.
    
    * "removed from the parent's btree" -> Typo for rbtree.
    
    * "pointing it to an embedded data structure and copying the data from the buffer"
      -> No longer implemented like this since
      01eabad4d93a8dc8f0f01a6209b384b1e010bb8c in 2012.
    
    * "Called to clean up cached DIOs on umount" -> This isn't specific to
      unmount, called regularly if iofree_count > dio_limit.
    
    * "voldata is not yet loaded" -> It's already loaded.
    
    * "so do not pass cluster", etc -> "cluster" no longer appears
      here since b7add6753e221920947c96fab3314c39a2f67fe4 in 2015.
    
    * "multiple hammer2_inode structures can be aliased to the same chain
      element, for example for hardlinks" -> This comment from 2013
      seems to only apply to hardlink mechanism back then, which was
      something completely different.

Summary of changes:
 sys/vfs/hammer2/hammer2.h        |  2 +-
 sys/vfs/hammer2/hammer2_admin.c  |  2 +-
 sys/vfs/hammer2/hammer2_chain.c  | 14 ++------------
 sys/vfs/hammer2/hammer2_io.c     |  3 ---
 sys/vfs/hammer2/hammer2_vfsops.c |  9 ++-------
 sys/vfs/hammer2/hammer2_vnops.c  |  5 -----
 6 files changed, 6 insertions(+), 29 deletions(-)

http://gitweb.dragonflybsd.org/dragonfly.git/commitdiff/ee92f60939d1e262cef9eac8ff4be09606b1daa7


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