tree 90fd4fc2e4b7c1972c96fae9b5f872159b21ad39
parent bdf28630b72154e5766cbad5874576b6f22e7237
author Darrick J. Wong <darrick.wong@oracle.com> 1475511080 -0700
committer Darrick J. Wong <darrick.wong@oracle.com> 1475511080 -0700

xfs: create refcount update intent log items

Create refcount update intent/done log items to record redo
information in the log.  Because we need to roll transactions between
updating the bmbt mapping and updating the reverse mapping, we also
have to track the status of the metadata updates that will be recorded
in the post-roll transactions, just in case we crash before committing
the final transaction.  This mechanism enables log recovery to finish
what was already started.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>