[PATCH 1/2] nvmet_fc: add defer_req callback for deferment of cmd buffer return
From: Johannes Thumshirn <hidden>
Date: 2017-08-02 08:16:17
Also in:
linux-scsi
On Tue, Aug 01, 2017@03:12:39PM -0700, James Smart wrote:
quoted hunk ↗ jump to hunk
@@ -463,9 +472,9 @@ static struct nvmet_fc_fcp_iod * nvmet_fc_alloc_fcp_iod(struct nvmet_fc_tgt_queue *queue) { static struct nvmet_fc_fcp_iod *fod; - unsigned long flags; - spin_lock_irqsave(&queue->qlock, flags); + /* Caller must hold queue->qlock */
+ lockped_assert_held(&queue->qlock); So we can check if the caller really holds the queue lock.
+
fod = list_first_entry_or_null(&queue->fod_list,
struct nvmet_fc_fcp_iod, fcp_list);
if (fod) {[...]
+ for (;;) {
+ deferfcp = list_first_entry_or_null(&queue->pending_cmd_list,
+ struct nvmet_fc_defer_fcp_req, req_list);
+ if (!deferfcp)
+ break;
while ((deferfcp = list_first_entry_or_null(&queue->pending_cmd_list,
struct nvmet_fc_defer_fcp_req,
req_list)) != NULL) {
?
Other than that,
Reviewed-by: Johannes Thumshirn <jthumshirn at suse.de>
--
Johannes Thumshirn Storage
jthumshirn at suse.de +49 911 74053 689
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