diff mbox series

[1/5] 9p: fix miss unmap request in 'rdma_request()'

Message ID 20221121080049.3850133-2-yebin@huaweicloud.com (mailing list archive)
State Not Applicable
Delegated to: Netdev Maintainers
Headers show
Series Fix error handle in 'rdma_request()' | expand

Checks

Context Check Description
netdev/tree_selection success Guessed tree name to be net-next
netdev/fixes_present success Fixes tag not required for -next series
netdev/subject_prefix warning Target tree name not specified in the subject
netdev/cover_letter success Series has a cover letter
netdev/patch_count success Link
netdev/header_inline success No static functions without inline keyword in header files
netdev/build_32bit success Errors and warnings before: 0 this patch: 0
netdev/cc_maintainers success CCed 10 of 10 maintainers
netdev/build_clang success Errors and warnings before: 0 this patch: 0
netdev/module_param success Was 0 now: 0
netdev/verify_signedoff success Signed-off-by tag matches author and committer
netdev/check_selftest success No net selftest shell script
netdev/verify_fixes success No Fixes tag
netdev/build_allmodconfig_warn success Errors and warnings before: 0 this patch: 0
netdev/checkpatch success total: 0 errors, 0 warnings, 0 checks, 24 lines checked
netdev/kdoc success Errors and warnings before: 0 this patch: 0
netdev/source_inline success Was 0 now: 0

Commit Message

Ye Bin Nov. 21, 2022, 8 a.m. UTC 
From: Ye Bin <yebin10@huawei.com>

If send request failed or fail to get semaphore will not call 'send_done()',
request may miss to unmap. So add unmap handle above error.

Signed-off-by: Ye Bin <yebin10@huawei.com>
---
 net/9p/trans_rdma.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)
diff mbox series

Patch

diff --git a/net/9p/trans_rdma.c b/net/9p/trans_rdma.c
index 6ff706760676..e498208ed72b 100644
--- a/net/9p/trans_rdma.c
+++ b/net/9p/trans_rdma.c
@@ -500,7 +500,7 @@  static int rdma_request(struct p9_client *client, struct p9_req_t *req)
 
 	if (down_interruptible(&rdma->sq_sem)) {
 		err = -EINTR;
-		goto send_error;
+		goto mapping_error;
 	}
 
 	/* Mark request as `sent' *before* we actually send it,
@@ -510,12 +510,15 @@  static int rdma_request(struct p9_client *client, struct p9_req_t *req)
 	req->status = REQ_STATUS_SENT;
 	err = ib_post_send(rdma->qp, &wr, NULL);
 	if (err)
-		goto send_error;
+		goto mapping_error;
 
 	/* Success */
 	return 0;
 
  /* Handle errors that happened during or while preparing the send: */
+ mapping_error:
+	ib_dma_unmap_single(rdma->cm_id->device, c->busa,
+			    c->req->tc.size, DMA_TO_DEVICE);
  send_error:
 	req->status = REQ_STATUS_ERROR;
 	kfree(c);