On Thu, Sep 20, 2018 at 06:49:59PM +0200, David Sterba wrote: > On Thu, Aug 23, 2018 at 03:51:48AM +0800, Liu Bo wrote: > > Several structs in btrfs are using rb_first() in a while loop, it'd be > > more efficient to do this with rb_first_cached() which has the O(1) > > complexity. > > > > This patch set updates five structs which may have a large rb tree in > > practice > > > > Liu Bo (5): > > Btrfs: href_root: use rb_first_cached > > Btrfs: href->ref_tree: use rb_first_cached > > Btrfs: delayed_items: use rb_first_cached > > Btrfs: extent_map: use rb_first_cached > > Btrfs: preftree: use rb_first_cached > > For the record, patches have been merged to misc-next. I've changed the > subject titles to > > Btrfs: delayed-refs: use rb_first_cached for href_root > Btrfs: delayed-refs: use rb_first_cached for ref_tree > Btrfs: delayed-inode: use rb_first_cached for ins_root and del_root > Btrfs: extent_map: use rb_first_cached > Btrfs: preftree: use rb_first_cached > > added Holger's tested-by and my reviewed-by.
Thanks so much for the efforts. thanks, -liubo
