Re: [PATCH] block: Revert v5.0 blk_mq_request_issue_directly() changes

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

 



On 4/4/19 11:06 PM, Christoph Hellwig wrote:
On Thu, Apr 04, 2019 at 10:08:43AM -0700, Bart Van Assche wrote:
blk_mq_try_issue_directly() can return BLK_STS*_RESOURCE for requests that
have been queued. If that happens when blk_mq_try_issue_directly() is called
by the dm-mpath driver then dm-mpath will try to resubmit a request that is
already queued and a kernel crash follows. Since it is nontrivial to fix
blk_mq_request_issue_directly(), revert the blk_mq_request_issue_directly()
changes that went into kernel v5.0.

And what are we going to do about 5.1+?

Hi Christoph,

This patch was developed and tested on my setup against Jens' for-next branch. So this patch should apply fine on kernel v5.1-rc3.

Bart.




[Index of Archives]     [Linux RAID]     [Linux SCSI]     [Linux ATA RAID]     [IDE]     [Linux Wireless]     [Linux Kernel]     [ATH6KL]     [Linux Bluetooth]     [Linux Netdev]     [Kernel Newbies]     [Security]     [Git]     [Netfilter]     [Bugtraq]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Device Mapper]

  Powered by Linux