Urbackup-kernel-patches. Patches for btrfs perfomance?

Server
1

Hi, @uroni

I found urbackup-kernel-patches at your github.

I didn’t find any information about this patches. As I understand this patches improved performance for btrfs with a lot of snapshots. Does it correct?

Please, write information about this pathes.

Thank you in advance!

2

No, w.r.t. btrfs it fixes some issues that are fixed in later btrfs versions (backports).

3

Thank you!

4

No, w.r.t. btrfs it fixes some issues that are fixed in later btrfs versions (backports).

Starting from which version of the kernel have these problems already been fixed and it does not need to be patched?