Commit 4a9209bf authored by Xinrui Mao's avatar Xinrui Mao Committed by Tomasz Zawadzki
Browse files

lib/nbd: return nbd_poll idle or busy accordingly 



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: default avatarXinrui Mao <xinrui.mao@intel.com>
Change-Id: Ifa2ca3010e10250b5320a8282dfed3d97bea5105
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/14615


Tested-by: default avatarSPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: default avatarChangpeng Liu <changpeng.liu@intel.com>
Reviewed-by: default avatarTomasz Zawadzki <tomasz.zawadzki@intel.com>
Community-CI: Mellanox Build Bot
parent 4c33c7ae

lib/nbd/nbd.c

+1 −1
Original line number Diff line number Diff line
@@ -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 *