Re: [GIT PULL 00/19] LightNVM patches for 4.12.

2017-04-16 Thread Jens Axboe
On 04/15/2017 12:55 PM, Matias Bjørling wrote: > Hi Jens, > > With this merge window, we like to push pblk upstream. It is a new > host-side translation layer that implements support for exposing > Open-Channel SSDs as block devices. > > We have described pblk in the LightNVM paper "LightNVM: The

Kernel Oops: BUG: unable to handle kernel NULL pointer dereference at 0000000000000050; IP is at blk_mq_poll+0xa0/0x2e0

2017-04-16 Thread Stephen Bates
Hi All As part of my testing of IO polling [1] I am seeing a NULL pointer dereference oops that seems to have been introduced in the preparation for 4.11. The kernel oops output is below and this seems to be due to blk_mq_tag_to_rq returning NULL in blk_mq_poll in blk-mq.c. I have not had a cha

Re: [PATCH 0/4] blk-mq-sched: allow to use hw tag for sched

2017-04-16 Thread Ming Lei
On Sat, Apr 15, 2017 at 08:38:21PM +0800, Ming Lei wrote: > The 1st patch enhances BLK_MQ_F_NO_SCHED so that we can't change/ > show available io schedulers on devices which don't support io > scheduler. > > The 2nd patch passes BLK_MQ_F_NO_SCHED for avoiding one regression > on mtip32xx, which is

[GIT PULL] A few small fixes for 4.11-rc

2017-04-16 Thread Jens Axboe
Hi Linus, Four small fixes. Three of them fix the same error in NVMe, in loop, fc, and rdma respectively. The last one fix from Ming fixes a regression in this series, where our bvec gap logic was wrong and causes an oops on NVMe for certain conditions. Please pull! git://git.kernel.dk/linux-

Re: [PATCH v4 6/6] dm rq: Avoid that request processing stalls sporadically

2017-04-16 Thread Ming Lei
On Fri, Apr 14, 2017 at 05:12:50PM +, Bart Van Assche wrote: > On Fri, 2017-04-14 at 09:13 +0800, Ming Lei wrote: > > On Thu, Apr 13, 2017 at 09:59:57AM -0700, Bart Van Assche wrote: > > > On 04/12/17 19:20, Ming Lei wrote: > > > > On Wed, Apr 12, 2017 at 06:38:07PM +, Bart Van Assche wrote

[PATCH 4.9 26/31] blk-mq: Avoid memory reclaim when remapping queues

2017-04-16 Thread Greg Kroah-Hartman
4.9-stable review patch. If anyone has any objections, please let me know. -- From: Gabriel Krisman Bertazi commit 36e1f3d107867b25c616c2fd294f5a1c9d4e5d09 upstream. While stressing memory and IO at the same time we changed SMT settings, we were able to consistently trigger de

Re: [PATCH V3 00/16] Introduce the BFQ I/O scheduler

2017-04-16 Thread Heinz Diehl
On 11.04.2017, Paolo Valente wrote: > new patch series, addressing (both) issues raised by Bart [1]. I'm doing a lot of automatic video transcoding in order to get my collection of homemade videos down to an acceptable size (mainly landscapes and boats all over the Norwegian west coast, taken wi

[PATCH 4.4 13/18] blk-mq: Avoid memory reclaim when remapping queues

2017-04-16 Thread Greg Kroah-Hartman
4.4-stable review patch. If anyone has any objections, please let me know. -- From: Gabriel Krisman Bertazi commit 36e1f3d107867b25c616c2fd294f5a1c9d4e5d09 upstream. While stressing memory and IO at the same time we changed SMT settings, we were able to consistently trigger de