every week new xfs errors

[Reinoud Koornstra]

Hi Everyone,

I am running xfs on a SSD.
smartd reports this:

Device: /dev/sdb [SAT], Crucial_CT256M550SSD3, S/N:15020ED48DF8,
WWN:5-00a075-10ed48df8, FW:MU02, 256 GB

I am running a compiled linux 4.1.6 kernel (before 4.1.2 and before
that 3.18.x) on ubuntu 14.04
xfs_repair had issues mostly every week to report.
Now xfs_repair says it's finally clean.
However:

reinoud at Mipam:/$ sudo xfs_db -r /dev/sdb1
xfs_db> frag
Metadata CRC error detected at block 0x773cac0/0x1000
Metadata CRC error detected at block 0xee79570/0x1000
Metadata CRC error detected at block 0x165b6020/0x1000
actual 2891336, ideal 2888294, fragmentation factor 0.11%

There are still issue.
Are there problems with running xfs on a SSD in general?
It's fast and stable (seems like), but mostly i start noticing
problems when i'm running git operations that fail, after that
xfs_repair reports issues indeed.

How can i fix these error reported here or can't i fix them?
Thanks,

Reinoud.