Re: [PATCH] scsi: Replace sdev_printk with printk_deferred to avoid

[Bart Van Assche]

On Thu, 2018-03-08 at 16:50 +0800, Wen Yang wrote:
> When scsi disks went wrong frequently, and with serial console 
> attached, tasks may be blocked in the following flow for more than 10s: [ ... ]

From https://bugzilla.kernel.org/show_bug.cgi?id=199003: "Hm,
printk_deferred is a bit dangerous; it moves console_unlock() to
IRQ. [ ... ] So I'd say that those two approaches

		printk_deferred + touch_nmi_watchdog

combined can do quite some harm. One thing for sure - they don't really fix
any problems."

Does that mean that this patch should be dropped?

Thanks,

Bart.