Messages in this thread | | | From | Bart Van Assche <> | Subject | Re: [PATCH] scsi: Replace sdev_printk with printk_deferred to avoid | Date | Tue, 27 Mar 2018 14:31:32 +0000 |
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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.
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