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module/compress: small code cleanup in poller

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Previously used while loop with a break to pull one entry off of
the queued list. Clarrify comment and get rid of while/break.

Signed-off-by: paul luse <paul.e.luse@intel.com>
Change-Id: Ifdedf988072a4d79b4d84ed6fef2279d4883ee54
Reviewed-on: https://review.gerrithub.io/c/spdk/spdk/+/472456
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Shuhei Matsumoto <shuhei.matsumoto.xt@hitachi.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
This commit is contained in:
paul luse 2019-10-26 19:35:42 +00:00 committed by Tomasz Zawadzki
parent ccc1c72ca2
commit fede944d8c
1 changed files with 4 additions and 3 deletions
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7
module/bdev/compress/vbdev_compress.c
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@ -681,8 +681,10 @@ comp_dev_poller(void *args)
*/
rte_comp_op_free(deq_ops[i]);
/* Check if there are any pending comp ops to process */
while (!TAILQ_EMPTY(&comp_bdev->queued_comp_ops)) {
/* Check if there are any pending comp ops to process, only pull one
* at a time off as _compress_operation() may re-queue the op.
*/
if (!TAILQ_EMPTY(&comp_bdev->queued_comp_ops)) {
op_to_resubmit = TAILQ_FIRST(&comp_bdev->queued_comp_ops);
rc = _compress_operation(op_to_resubmit->backing_dev,
op_to_resubmit->src_iovs,
@ -695,7 +697,6 @@ comp_dev_poller(void *args)
TAILQ_REMOVE(&comp_bdev->queued_comp_ops, op_to_resubmit, link);
free(op_to_resubmit);
}
break;
}
}
return 0;