On 10/12/18 4:07 AM, Jianchao Wang wrote: > Hi Jens > > This patch set fixes some defects during update hw queues. > > 1st patch refactor the blk-mq debugfs and sysfs register during > blk_mq_update_nr_hw_queues. > > 2nd patch change the GFP_KERNEL to GFP_NOIO during blk_mq_realloc_hw_ctxs, > > 3rd patch try to realloc hctx when this hctx is mapped to a different node. > > 4th patch should be able to fix the panic reported in follwing link > https://marc.info/?l=linux-block&m=153799465603723&w=2 > > V2: > - Newly add 2nd and 3rd patch. > - Use blk_mq_map_queues when __blk_mq_update_nr_hw_queues fallbacks to > previous nr_hw_queues to avoid driver's .map_queues leak mapping of > some cpus due the fallback nr_hw_queues. > - Add Ming's Reviewed-by in 1st patch. > > > Jianchao Wang[4] > blk-mq: adjust debugfs and sysfs register when > blk-mq: change gfp flags to GFP_NOIO in > blk-mq: realloc hctx when hw queue is mapped to > blk-mq: fallback to previous nr_hw_queues when > > block/blk-core.c | 2 +- > block/blk-flush.c | 6 +-- > block/blk-mq.c | 155 ++++++++++++++++++++++++++++++++++-------------------- > block/blk.h | 2 +- > 4 files changed, 102 insertions(+), 63 deletions(-) > Applied, thanks. -- Jens Axboe
