Possible bugs

[NeverMore2744]

In raizn.h, the padding of the superblock seems to be wrong:

// Line 81, raizn.h
char padding[PAGE_SIZE - (sizeof(struct raizn_params) - sizeof(int))];

I found the size of superblock becomes 4104 instead of 4096. Perhaps it should be char padding[PAGE_SIZE - (sizeof(struct raizn_params) + sizeof(int))];

I also found that FIO on the device will cause deadlocks in the kernel.

Message from syslogd@proj at Nov 17 17:21:53 ...
 kernel:[ 3696.821465] watchdog: BUG: soft lockup - CPU#11 stuck for 417s! [kworker/u32:6:2955]

Message from syslogd@proj at Nov 17 17:21:53 ...
 kernel:[ 3696.821465] watchdog: BUG: soft lockup - CPU#11 stuck for 417s! [kworker/u32:6:2955]

Message from syslogd@proj at Nov 17 17:22:21 ...
 kernel:[ 3724.820847] watchdog: BUG: soft lockup - CPU#11 stuck for 444s! [kworker/u32:6:2955]

Message from syslogd@proj at Nov 17 17:22:21 ...
 kernel:[ 3724.820847] watchdog: BUG: soft lockup - CPU#11 stuck for 444s! [kworker/u32:6:2955]

Message from syslogd@proj at Nov 17 17:22:49 ...
 kernel:[ 3752.820227] watchdog: BUG: soft lockup - CPU#11 stuck for 470s! [kworker/u32:6:2955]

Message from syslogd@proj at Nov 17 17:22:49 ...
 kernel:[ 3752.820227] watchdog: BUG: soft lockup - CPU#11 stuck for 470s! [kworker/u32:6:2955]

And I cannot kill the fio process or reboot the system when the CPU is stuck :(