Re: [PATCH v7 9/9] block: Avoid deadlocks with bio allocation by stacking drivers

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

 



On Tue, Sep 04, 2012 at 03:26:19PM -0400, Mikulas Patocka wrote:

[..]
> BTW. can these new-style timerless plugs introduce deadlocks too? What 
> happens when some bios are indefinitely delayed because their requests are 
> held in a plug and a mempool runs out?

I think they will not deadlock because these on stack bios/requests are
flushed/dispatched when process schedules out. So if a submitter blocks
on a mempool, it will be scheduled out and requests on plug will be 
dispatched.

Thanks
Vivek

--
dm-devel mailing list
dm-devel@xxxxxxxxxx
https://www.redhat.com/mailman/listinfo/dm-devel


[Index of Archives]     [DM Crypt]     [Fedora Desktop]     [ATA RAID]     [Fedora Marketing]     [Fedora Packaging]     [Fedora SELinux]     [Yosemite Discussion]     [KDE Users]     [Fedora Docs]

  Powered by Linux