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Date: Wed, 3 Sep 2014 22:33:07 +0200 From: Alexander Gordeev <agordeev@...hat.com> To: linux-kernel@...r.kernel.org Cc: Alexander Gordeev <agordeev@...hat.com>, Jens Axboe <axboe@...nel.dk> Subject: [PATCH 3/3] blk-mq: Fix formula to calculate fair share of tags Fair share of tags is number of tags diveded on number of users. Not sure why it is different. Signed-off-by: Alexander Gordeev <agordeev@...hat.com> Cc: Jens Axboe <axboe@...nel.dk> --- block/blk-mq-tag.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/block/blk-mq-tag.c b/block/blk-mq-tag.c index d1eb579..1b9c949 100644 --- a/block/blk-mq-tag.c +++ b/block/blk-mq-tag.c @@ -127,7 +127,7 @@ static inline bool hctx_may_queue(struct blk_mq_hw_ctx *hctx, /* * Allow at least some tags */ - depth = max((bt->depth + users - 1) / users, 4U); + depth = max(bt->depth / users, 4U); return atomic_read(&hctx->nr_active) < depth; } -- 1.9.3 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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