tree 60a31e885aca0bdc88c3dc41a522725c996bc6fb
parent 7a2a0145da40096ad5bf8df902bb5d4b332f29f7
author Alexey Lyashkov <alexey.lyashkov@seagate.com> 1488398634 -0500
committer Theodore Ts'o <tytso@mit.edu> 1488398645 -0500

libext2fs: readahead for meta_bg

There are ~37k of random IOs with meta_bg option on 300T target.
Debugfs requires 20 minutes to be started. Enabling readahead for
group blocks metadata save time dramatically. Only 12s to start.

Signed-off-by: Alexey Lyashkov <alexey.lyashkov@seagate.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Andreas Dilger <adilger@dilger.ca>