From: Anton Eidelman <anton.eidelman@gmail.com>
To: linux-nvme@lists.infradead.org, hch@lst.de, kbusch@kernel.org,
sagi@grimberg.me, axboe@fb.com
Cc: Anton Eidelman <anton@lightbitslabs.com>
Subject: [PATCH v3 2/3] nvme/multipath: cosmetic: keep ns nsid locally
Date: Mon, 13 Sep 2021 15:46:31 -0600 [thread overview]
Message-ID: <20210913214632.88294-3-anton@lightbitslabs.com> (raw)
In-Reply-To: <20210913214632.88294-1-anton@lightbitslabs.com>
Keep the nsid of the current namespace in a local variable,
in order to avoid multiple occurrances of "ns->head->ns_id".
Signed-off-by: Anton Eidelman <anton@lightbitslabs.com>
---
drivers/nvme/host/multipath.c | 8 +++++---
1 file changed, 5 insertions(+), 3 deletions(-)
diff --git a/drivers/nvme/host/multipath.c b/drivers/nvme/host/multipath.c
index e8ccdd398f78..e1ce80c12815 100644
--- a/drivers/nvme/host/multipath.c
+++ b/drivers/nvme/host/multipath.c
@@ -601,15 +601,17 @@ static int nvme_update_ana_state(struct nvme_ctrl *ctrl,
down_read(&ctrl->namespaces_rwsem);
list_for_each_entry(ns, &ctrl->namespaces, list) {
unsigned nsid;
+ unsigned ns_nsid = ns->head->ns_id;
+
again:
nsid = le32_to_cpu(desc->nsids[n]);
- if (ns->head->ns_id < nsid)
+ if (ns_nsid < nsid)
continue;
- if (ns->head->ns_id == nsid)
+ if (ns_nsid == nsid)
nvme_update_ns_ana_state(desc, ns);
if (++n == nr_nsids)
break;
- if (ns->head->ns_id > nsid)
+ if (ns_nsid > nsid)
goto again;
}
up_read(&ctrl->namespaces_rwsem);
--
2.25.1
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next prev parent reply other threads:[~2021-09-13 21:47 UTC|newest]
Thread overview: 35+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-09-12 18:54 [PATCH RESEND 0/3] nvme/mpath: fix missed namespaces in ana state update Anton Eidelman
2021-09-12 18:54 ` [PATCH 1/3] nvme/multipath: fix failure to update ns ana state Anton Eidelman
2021-09-12 18:54 ` [PATCH 2/3] nvme/multipath: cosmetic: keep ns nsid locally Anton Eidelman
2021-09-12 18:54 ` [PATCH 3/3] nvme/multipath: fix stale ana state for namespaces just added by scan work Anton Eidelman
2021-09-13 15:30 ` [PATCH v2 0/3] nvme/mpath: fix missed namespaces in ana state update Anton Eidelman
2021-09-13 15:30 ` [PATCH v2 1/3] nvme/multipath: fix failure to update ns ana state Anton Eidelman
2021-09-13 16:01 ` Christoph Hellwig
2021-09-13 19:29 ` Sagi Grimberg
2021-09-14 8:27 ` Christoph Hellwig
2021-09-13 15:30 ` [PATCH v2 2/3] nvme/multipath: cosmetic: keep ns nsid locally Anton Eidelman
2021-09-13 16:02 ` Christoph Hellwig
2021-09-13 20:19 ` Anton Eidelman
2021-09-13 20:57 ` Keith Busch
2021-09-14 5:44 ` Christoph Hellwig
2021-09-13 15:30 ` [PATCH v2 3/3] nvme/multipath: fix stale ana state for namespaces just added by scan work Anton Eidelman
2021-09-13 16:03 ` Christoph Hellwig
2021-09-13 16:08 ` Keith Busch
2021-09-14 6:24 ` Sagi Grimberg
2021-09-14 6:30 ` Christoph Hellwig
2021-09-14 6:40 ` Christoph Hellwig
2021-09-14 7:09 ` Sagi Grimberg
2021-09-14 7:32 ` Christoph Hellwig
2021-09-14 16:45 ` Anton Eidelman
2021-09-15 9:32 ` Sagi Grimberg
2021-09-14 14:24 ` Keith Busch
2021-09-13 16:07 ` Keith Busch
2021-09-13 16:11 ` Christoph Hellwig
2021-09-13 16:24 ` Keith Busch
2021-09-13 16:46 ` Anton Eidelman
2021-09-13 15:32 ` [PATCH v2 0/3] nvme/mpath: fix missed namespaces in ana state update Christoph Hellwig
2021-09-13 15:42 ` [PATCH v2 0/3] nvme/mpath: fix missed namespaces in ana state update FIXED Anton Eidelman
2021-09-13 21:46 ` [PATCH v3 0/3] nvme/mpath: fix missed namespaces in ana state update Anton Eidelman
2021-09-13 21:46 ` [PATCH v3 1/3] nvme/multipath: fix failure to update ns ana state Anton Eidelman
2021-09-13 21:46 ` Anton Eidelman [this message]
2021-09-13 21:46 ` [PATCH v3 3/3] nvme/multipath: fix stale ana state for namespaces just added by scan work Anton Eidelman
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