btrfs: remove unused btrfs_root::defrag_trans_start
Last touched in 2013 by commit de78b51a ("btrfs: remove cache only arguments from defrag path") that was the only code that used the value. Now it's only set but never used for anything, so we can remove it. Reviewed-by:Nikolay Borisov <nborisov@suse.com> Reviewed-by:
Anand Jain <anand.jain@oracle.com> Signed-off-by:
David Sterba <dsterba@suse.com>
parent
bab16e21
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