Re: [PATCH v2 4/4] mm/slub: Fix sysfs shrink circular locking dependency

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 




> On Apr 27, 2020, at 9:39 PM, Waiman Long <longman@xxxxxxxxxx> wrote:
> 
> The sequence that was prevented by this patch is "kn->count --> mem_hotplug_lock.rwsem". This sequence isn't directly in the splat. Once this link is broken, the 3-lock circular loop cannot be formed. Maybe I should modify the commit log to make this point more clear.

I don’t know what you are talking about. Once trylock succeed once, you will have kn->count —> cpu/memory_hotplug_lock.



[Index of Archives]     [Linux ARM Kernel]     [Linux ARM]     [Linux Omap]     [Fedora ARM]     [IETF Annouce]     [Security]     [Bugtraq]     [Linux OMAP]     [Linux MIPS]     [eCos]     [Asterisk Internet PBX]     [Linux API]     [Monitors]

  Powered by Linux