Messages in this thread | | | Date | Wed, 18 Jun 2014 09:31:50 -0700 | From | Jens Axboe <> | Subject | [GIT PULL] Block fixes for 3.16-rc1 |
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Hi Linus,
A smaller collection of fixes for the block core that would be nice to have in -rc2. This pull request contains:
- Fixes for races in the wait/wakeup logic used in blk-mq from Alexander. No issues have been observed, but it is definitely a bit flakey currently. Alternatively, we may drop the cyclic wakeups going forward, but that needs more testing.
- Some cleanups from Christoph.
- Fix for an oops in null_blk if queue_mode=1 and softirq completions are used. From me.
- A fix for a regression caused by the chunk size setting. It inadvertently used max_hw_sectors instead of max_sectors, which is incorrect, and causes hangs on btrfs multi-disk setups (where hw sectors apparently isn't set). From me.
- Removal of WQ_POWER_EFFICIENT in the kblockd creation. This was a recent addition as well, but it actually breaks blk-mq which relies on strict scheduling. If the workqueue power_efficient mode is turned on, this breaks blk-mq. From Matias.
- null_blk module parameter description fix from Mike.
Please pull!
git://git.kernel.dk/linux-block.git for-linus
---------------------------------------------------------------- Alexander Gordeev (3): blk-mq: bitmap tag: fix races on shared ::wake_index fields blk-mq: bitmap tag: fix race on blk_mq_bitmap_tags::wake_cnt blk-mq: bitmap tag: fix races in bt_get() function
Christoph Hellwig (3): block: remove elv_abort_queue and blk_abort_flushes blk-mq: properly drain stopped queues blk-mq: merge blk_mq_drain_queue and __blk_mq_drain_queue
Jens Axboe (2): null_blk: fix softirq completions for queue_mode == 1 block: blk_max_size_offset() should check ->max_sectors
Matias Bjørling (1): block: remove WQ_POWER_EFFICIENT from kblockd
Mike Snitzer (1): null_blk: fix name and description of 'queue_mode' module parameter
block/blk-core.c | 3 +-- block/blk-flush.c | 38 ------------------------------- block/blk-mq-tag.c | 59 +++++++++++++++++++++++++++++++----------------- block/blk-mq-tag.h | 2 +- block/blk-mq.c | 11 +++------ block/blk.h | 1 - block/elevator.c | 20 ---------------- drivers/block/null_blk.c | 7 ++++-- include/linux/blk-mq.h | 2 +- include/linux/blkdev.h | 2 +- include/linux/elevator.h | 1 - 11 files changed, 50 insertions(+), 96 deletions(-)
-- Jens Axboe
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