Re: [Crash-utility] [External Mail]Re: [PATCH v4] Fix: move huge compressed obj from page to zspage

> This depends on kernel version number, it might be more friendly for the > distribution to output some debug info as below: > > if (CRASHDEBUG(1)) > error(INFO, "ZRAM_FLAG_SHIFT=%lu\n", ZRAM_FLAG_SHIFT); > > Once the related kernel patches are backported to an old kernel, the > similar checking may fail. But, at least we can know a little more with the > crash debug info. Sounds good, then I would like to show the shift value instead of mask value, so changed a little. Is the attached patch OK?

crash> rd 7fb60bdff000 zram_flag_shift: 13 ... RHEL8: crash> rd 7ff668048000 zram_flag_shift: 24 4.18 and later kernels has ZRAM_LOCK, so I think usually the else-if block isn't used and it's kind of a fail-safe for a future change. Anyway, thank you for the good comments. Thanks, Kazu