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| author | Christoph Hellwig <hch@lst.de> | 2014-02-10 09:29:00 -0700 |
|---|---|---|
| committer | Jens Axboe <axboe@fb.com> | 2014-02-10 09:29:00 -0700 |
| commit | 18741986a4b1dc4b1f171634c4191abc3b0fa023 (patch) | |
| tree | d0f632fa9b205d5fbcc76ff1cf8cba63112c7da8 /block/blk-mq.h | |
| parent | ce2c350b2cfe5b5ca5023a6b1ec4d21821d39add (diff) | |
| download | linux-stable-18741986a4b1dc4b1f171634c4191abc3b0fa023.tar.gz linux-stable-18741986a4b1dc4b1f171634c4191abc3b0fa023.tar.bz2 linux-stable-18741986a4b1dc4b1f171634c4191abc3b0fa023.zip | |
blk-mq: rework flush sequencing logic
Witch to using a preallocated flush_rq for blk-mq similar to what's done
with the old request path. This allows us to set up the request properly
with a tag from the actually allowed range and ->rq_disk as needed by
some drivers. To make life easier we also switch to dynamic allocation
of ->flush_rq for the old path.
This effectively reverts most of
"blk-mq: fix for flush deadlock"
and
"blk-mq: Don't reserve a tag for flush request"
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'block/blk-mq.h')
| -rw-r--r-- | block/blk-mq.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/block/blk-mq.h b/block/blk-mq.h index f29b645f0e1c..ed0035cd458e 100644 --- a/block/blk-mq.h +++ b/block/blk-mq.h @@ -28,6 +28,7 @@ void blk_mq_run_hw_queue(struct blk_mq_hw_ctx *hctx, bool async); void blk_mq_init_flush(struct request_queue *q); void blk_mq_drain_queue(struct request_queue *q); void blk_mq_free_queue(struct request_queue *q); +void blk_mq_rq_init(struct blk_mq_hw_ctx *hctx, struct request *rq); /* * CPU hotplug helpers |