While looking at my dmesg output after a new 'from scratch' Mint 18 64bit installation, I came across something that caught my attention:

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`[ 13.726892] Btrfs loaded`

Seeing that all my linux drives are formatted to ext4 with nothing using the Btrfs, I don't understand the reason behind this.

Q1:

Is it necessary for Mint 18 to work properly?

Q2: Why?

Q3:

If not, can the loading of Btrfs be deactivated? (if only for neatness' sake).

Thanks in advance,

A.

**EDIT:**

Neglected to copy the previous instances in dmesg.

raid6 and xor modules (btrfs dependedncies) are also loaded.

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```
[ 13.292031] raid6: sse2x1 gen() 4951 MB/s
[ 13.360012] raid6: sse2x1 xor() 4761 MB/s
[ 13.428010] raid6: sse2x2 gen() 5643 MB/s
[ 13.496010] raid6: sse2x2 xor() 5820 MB/s
[ 13.564009] raid6: sse2x4 gen() 8278 MB/s
[ 13.632008] raid6: sse2x4 xor() 6494 MB/s
[ 13.632010] raid6: using algorithm sse2x4 gen() 8278 MB/s
[ 13.632011] raid6: .... xor() 6494 MB/s, rmw enabled
[ 13.632012] raid6: using ssse3x2 recovery algorithm
[ 13.633228] xor: measuring software checksum speed
[ 13.672008] prefetch64-sse: 11664.000 MB/sec
[ 13.712007] generic_sse: 10332.000 MB/sec
[ 13.712009] xor: using function: prefetch64-sse (11664.000 MB/sec)
```

TIA.

A.