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lib/nbd: return nbd_poll idle or busy accordingly

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The previous version missed the case of return value of _nbd_poll
equals to 0,and thus,when using nbd with no io,spdk_top shows high
cpu utilization.Return idle when _nbd_poll return 0.

Fixes #2697

Signed-off-by: Xinrui Mao <xinrui.mao@intel.com>
Change-Id: Ifa2ca3010e10250b5320a8282dfed3d97bea5105
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/14615
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Changpeng Liu <changpeng.liu@intel.com>
Reviewed-by: Tomasz Zawadzki <tomasz.zawadzki@intel.com>
Community-CI: Mellanox Build Bot
This commit is contained in:
Xinrui Mao 2022-09-16 05:47:56 +00:00 committed by Tomasz Zawadzki
parent 4c33c7ae20
commit 4a9209bf1d
1 changed files with 1 additions and 1 deletions
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2
lib/nbd/nbd.c
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@ -835,7 +835,7 @@ nbd_poll(void *arg)
spdk_nbd_stop(nbd);
}
return SPDK_POLLER_BUSY;
return rc == 0 ? SPDK_POLLER_IDLE : SPDK_POLLER_BUSY;
}
static void *