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nvmf/vfio-user: remove unnecessary read barrier

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The spdk_rmb() in nvmf_vfio_user_poll_group_poll() is unnecessary: we
already have a read barrier for SQ tail updates at the per-SQ level, so
this doesn't add anything.

Signed-off-by: John Levon <john.levon@nutanix.com>
Change-Id: I88cddd968f4a949640754526e19cb869d9fb31af
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/12381
Community-CI: Broadcom CI <spdk-ci.pdl@broadcom.com>
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Changpeng Liu <changpeng.liu@intel.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
This commit is contained in:
John Levon 2022-04-26 11:33:32 +01:00 committed by Tomasz Zawadzki
parent acba80827a
commit 370df805b2
1 changed files with 0 additions and 2 deletions
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lib/nvmf/vfio_user.c
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@ -5171,8 +5171,6 @@ nvmf_vfio_user_poll_group_poll(struct spdk_nvmf_transport_poll_group *group)
assert(group != NULL);
spdk_rmb();
vu_group = SPDK_CONTAINEROF(group, struct nvmf_vfio_user_poll_group, group);
SPDK_DEBUGLOG(vfio_user_db, "polling all SQs\n");