From: Christoph Hellwig <hch@lst.de>
To: Jens Axboe <axboe@kernel.dk>
Cc: Irvin Cote <irvincoteg@gmail.com>,
hch@lst.de, kbusch@kernel.org, sagi@grimberg.me,
linux-nvme@lists.infradead.org
Subject: Re: [PATCH 1/2] nvme-core: remove redundant condition in nvme_ns_head_multipath
Date: Sat, 20 May 2023 06:24:13 +0200 [thread overview]
Message-ID: <20230520042413.GB31780@lst.de> (raw)
In-Reply-To: <147b8893-10cd-27dd-eb48-3a5128de8f5d@kernel.dk>
On Thu, May 18, 2023 at 08:12:23PM -0600, Jens Axboe wrote:
> > static inline bool nvme_ns_head_multipath(struct nvme_ns_head *head)
> > {
> > - return IS_ENABLED(CONFIG_NVME_MULTIPATH) && head->disk;
> > + return head->disk;
> > }
>
> Might not matter for this case, but this changes something that'd
> compile away for !CONFIG_NVME_MULTIPATH to now needing to read
> disk->head instead. That doesn't seem like a good change.
Exactly. That's the reason why this helper and check exist.
next prev parent reply other threads:[~2023-05-20 4:24 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-05-18 22:10 [PATCH 0/2] minor changes regarding multipath-head assertion Irvin Cote
2023-05-18 22:10 ` [PATCH 1/2] nvme-core: remove redundant condition in nvme_ns_head_multipath Irvin Cote
2023-05-19 2:12 ` Jens Axboe
2023-05-20 4:24 ` Christoph Hellwig [this message]
2023-05-18 22:10 ` [PATCH 2/2] nvme-core: use nvme_ns_head_multipath instead of ns->head->disk Irvin Cote
2023-05-20 4:24 ` Christoph Hellwig
2023-06-12 17:59 ` Keith Busch
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