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| author | Jens Axboe <axboe@kernel.dk> | 2013-11-19 09:25:07 -0700 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2013-11-19 09:25:07 -0700 |
| commit | 94eddfbeaafa3e8040a2c47d370dea0e58e76941 (patch) | |
| tree | 52cdf7a26b27d9cab3b1eba9b424a6d1432bdf8d /include/linux/blkdev.h | |
| parent | 34f2fd8dfe6185b0eaaf7d661281713a6170b077 (diff) | |
| download | lwn-94eddfbeaafa3e8040a2c47d370dea0e58e76941.tar.gz lwn-94eddfbeaafa3e8040a2c47d370dea0e58e76941.zip | |
blk-mq: ensure that we set REQ_IO_STAT so diskstats work
If disk stats are enabled on the queue, a request needs to
be marked with REQ_IO_STAT for accounting to be active on
that request. This fixes an issue with virtio-blk not
showing up in /proc/diskstats after the conversion to
blk-mq.
Add QUEUE_FLAG_MQ_DEFAULT, setting stats and same cpu-group
completion on by default.
Reported-by: Dave Chinner <david@fromorbit.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'include/linux/blkdev.h')
| -rw-r--r-- | include/linux/blkdev.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h index f26ec20f6354..1b135d49b279 100644 --- a/include/linux/blkdev.h +++ b/include/linux/blkdev.h @@ -505,6 +505,9 @@ struct request_queue { (1 << QUEUE_FLAG_SAME_COMP) | \ (1 << QUEUE_FLAG_ADD_RANDOM)) +#define QUEUE_FLAG_MQ_DEFAULT ((1 << QUEUE_FLAG_IO_STAT) | \ + (1 << QUEUE_FLAG_SAME_COMP)) + static inline void queue_lockdep_assert_held(struct request_queue *q) { if (q->queue_lock) |