On Wed, Apr 01, 2015 at 07:35:19PM -0700, Darrick J. Wong wrote: > It's really inefficient to (ab)use the TDB key store as a bitmap to > find out if we've already written a block to the undo file, because > the tdb code is reads the database key btree disk blocks for *every* > query. Changing that logic to a bitmap reduces overhead by a large > margin -- the overhead of using undo_io while converting a 2TB FS to > metadata_csum is reduced from 55 minutes to 45. > > Signed-off-by: Darrick J. Wong <darrick.wong@xxxxxxxxxx> Thanks, applied. - Ted -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
