Re: [PATCH] mtip32xx: avoid to read HOST_CAP from HW in .queue_rq() | linux-block | Ratatoskr

[PATCH] mtip32xx: avoid to read HOST_CAP from HW in .queue_rq() · Ming Lei <hidden> · 2017-07-05
Re: [PATCH] mtip32xx: avoid to read HOST_CAP from HW in .queue_rq() · Christoph Hellwig <hch@infradead.org> · 2017-07-05
Re: [PATCH] mtip32xx: avoid to read HOST_CAP from HW in .queue_rq() · Jens Axboe <axboe@fb.com> · 2017-07-05

Re: [PATCH] mtip32xx: avoid to read HOST_CAP from HW in .queue_rq()

From: Christoph Hellwig <hch@infradead.org>
Date: 2017-07-05 18:01:48

mmio reads in the fast path are always a bad idea..

Reviewed-by: Christoph Hellwig <hch@lst.de>