On 07/23/18 16:39, Patrik Lundquist wrote:
$ uname -a
Linux nas 4.17.0-1-amd64 #1 SMP Debian 4.17.8-1 (2018-07-20) x86_64 GNU/Linux
$ dmesg | grep Btrfs
[ 8.168408] Btrfs loaded, crc32c=crc32c-intel
$ lsmod | grep crc32
crc32_pclmul 16384 0
libcrc32c 16384 1 btrfs
crc32c_generic 16384 0
crc32c_intel 24576 2
Ooohh..thanks for that. I wouldn't be surprised it's because my libcrc
is built-in (probably because of built-in xfs) and at initialization time
doesn't see any modules, so it always selects the generic impl.
Since btrfs is only ever loaded last, the previous btrfs init code could
properly detect/load/use the crc32c-intel module.
I switched the crc32c impls to built-in and what do you know:
Jul 23 17:04:26 ragnarok kernel: Btrfs loaded, crc32c=crc32c-intel
\o/
Thanks Patrick!
Holger
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