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| author | Christoph Hellwig <hch@lst.de> | 2017-01-27 09:51:45 -0700 |
|---|---|---|
| committer | Jens Axboe <axboe@fb.com> | 2017-01-27 15:08:35 -0700 |
| commit | 6d247d7f71d1fa4b66a5f4da7b1daa21510d529b (patch) | |
| tree | 449921f154b9bd0176453478fdd7a8c6911be5ad /block/blk-flush.c | |
| parent | 5ea708d15a928f7a479987704203616d3274c03b (diff) | |
| download | linux-6d247d7f71d1fa4b66a5f4da7b1daa21510d529b.tar.gz linux-6d247d7f71d1fa4b66a5f4da7b1daa21510d529b.tar.bz2 linux-6d247d7f71d1fa4b66a5f4da7b1daa21510d529b.zip | |
block: allow specifying size for extra command data
This mirrors the blk-mq capabilities to allocate extra drivers-specific
data behind struct request by setting a cmd_size field, as well as having
a constructor / destructor for it.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'block/blk-flush.c')
| -rw-r--r-- | block/blk-flush.c | 5 |
1 files changed, 2 insertions, 3 deletions
diff --git a/block/blk-flush.c b/block/blk-flush.c index 4427896641ac..0a0358e48b76 100644 --- a/block/blk-flush.c +++ b/block/blk-flush.c @@ -547,11 +547,10 @@ struct blk_flush_queue *blk_alloc_flush_queue(struct request_queue *q, if (!fq) goto fail; - if (q->mq_ops) { + if (q->mq_ops) spin_lock_init(&fq->mq_flush_lock); - rq_sz = round_up(rq_sz + cmd_size, cache_line_size()); - } + rq_sz = round_up(rq_sz + cmd_size, cache_line_size()); fq->flush_rq = kzalloc_node(rq_sz, GFP_KERNEL, node); if (!fq->flush_rq) goto fail_rq; |