[PATCH 0/3] directory index patch set v2

[Bernd Schubert <bernd.schubert@xxxxxxxxxxxxxxxxxx>]

The following series implements...

      ext4: Fix compilation with -DDX_DEBUG v2
      ext4 directory index: read-ahead blocks v2
      dx read-ahead: Map blocks with a single semaphore lock

TODO: 
- Fix compilatation of ext3 with -DDX_DEBUG.
- Use worker threads for read-aheads?


 Documentation/filesystems/ext4.txt |    6 ++
 fs/ext4/ext4.h                     |    3 +
 fs/ext4/inode.c                    |   95 ++++++++++++++++++++++++++++++++++++
 fs/ext4/namei.c                    |   84 ++++++++++++++++++++++++++++++--
 fs/ext4/super.c                    |   17 ++++++
 5 files changed, 199 insertions(+), 6 deletions(-)

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