Re: [PATCH V2] btrfs: implement delayed inode items operation

Excerpts from Miao Xie's message of 2011-02-17 00:48:40 -0500:

Compare with Ext3/4, the performance of file creation and deletion on btrfs
is very poor. the reason is that btrfs must do a lot of b+ tree insertions,
such as inode item, directory name item, directory name index and so on.

If we can do some delayed b+ tree insertion or deletion, we can improve the
performance, so we made this patch which implemented delayed directory name
index insertion/deletion and delayed inode update.

This work is really cool, thanks for doing it.  I'm starting a run on
this tonight and if all goes well I'll review in detail and try to queue
it along with the per-subvolume storage bits for .39.

Thanks!

-chris