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lib/nvme: extract function for removing child requests

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This is preparation for handling non-PRP compliant SGL.

Change-Id: I49c3745498411c5ff9e17cd08f181d4d434c2d08
Signed-off-by: Pawel Wodkowski <pawelx.wodkowski@intel.com>
This commit is contained in:
Pawel Wodkowski 2016-12-13 15:56:44 +01:00 committed by Jim Harris
parent ca618b2751
commit bcf546bb00
1 changed files with 18 additions and 9 deletions
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27
lib/nvme/nvme_ns_cmd.c
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@ -93,6 +93,22 @@ nvme_request_remove_child(struct nvme_request *parent, struct nvme_request *chil
TAILQ_REMOVE(&parent->children, child, child_tailq);
}
static void
nvme_request_free_children(struct nvme_request *req)
{
struct nvme_request *child, *tmp;
if (req->num_children == 0) {
return;
}
/* free all child nvme_request */
TAILQ_FOREACH_SAFE(child, &req->children, child_tailq, tmp) {
nvme_request_remove_child(req, child);
nvme_free_request(child);
}
}
static struct nvme_request *
_nvme_ns_cmd_split_request(struct spdk_nvme_ns *ns,
const struct nvme_payload *payload,
@ -107,7 +123,7 @@ _nvme_ns_cmd_split_request(struct spdk_nvme_ns *ns,
uint32_t remaining_lba_count = lba_count;
uint32_t offset = 0;
uint32_t md_offset = 0;
struct nvme_request *child, *tmp;
struct nvme_request *child;
if (ns->flags & SPDK_NVME_NS_DPS_PI_SUPPORTED) {
/* for extended LBA only */
@ -122,14 +138,7 @@ _nvme_ns_cmd_split_request(struct spdk_nvme_ns *ns,
child = _nvme_ns_cmd_rw(ns, payload, lba, lba_count, cb_fn,
cb_arg, opc, io_flags, apptag_mask, apptag);
if (child == NULL) {
if (req->num_children) {
/* free all child nvme_request */
TAILQ_FOREACH_SAFE(child, &req->children,
child_tailq, tmp) {
nvme_request_remove_child(req, child);
nvme_free_request(child);
}
}
nvme_request_free_children(req);
return NULL;
}
child->payload_offset = offset;