GitHub-Mirror/Star64_linux
2
0
Fork 0
mirror of https://github.com/Fishwaldo/Star64_linux.git synced 2025-07-07 23:11:27 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions

svcrdma: Prevent page release when nothing was received

Browse source 
I noticed that svc_rqst_release_pages() was still unnecessarily
releasing a page when svc_rdma_recvfrom() returns zero.

Fixes: a53d5cb064 ("svcrdma: Avoid releasing a page in svc_xprt_release()")
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
This commit is contained in:
Chuck Lever 2023-06-12 10:10:20 -04:00
parent c4b50cdf9d
commit baf6d18b11
1 changed files with 6 additions and 6 deletions
Download patch file Download diff file Expand all files Collapse all files

12
net/sunrpc/xprtrdma/svc_rdma_recvfrom.c
View file

@ -792,6 +792,12 @@ int svc_rdma_recvfrom(struct svc_rqst *rqstp)
struct svc_rdma_recv_ctxt *ctxt; struct svc_rdma_recv_ctxt *ctxt;
int ret; int ret;
/* Prevent svc_xprt_release() from releasing pages in rq_pages
* when returning 0 or an error.
*/
rqstp->rq_respages = rqstp->rq_pages;
rqstp->rq_next_page = rqstp->rq_respages;
rqstp->rq_xprt_ctxt = NULL; rqstp->rq_xprt_ctxt = NULL;
ctxt = NULL; ctxt = NULL;
@ -815,12 +821,6 @@ int svc_rdma_recvfrom(struct svc_rqst *rqstp)
DMA_FROM_DEVICE); DMA_FROM_DEVICE);
svc_rdma_build_arg_xdr(rqstp, ctxt); svc_rdma_build_arg_xdr(rqstp, ctxt);
/* Prevent svc_xprt_release from releasing pages in rq_pages
* if we return 0 or an error.
*/
rqstp->rq_respages = rqstp->rq_pages;
rqstp->rq_next_page = rqstp->rq_respages;
ret = svc_rdma_xdr_decode_req(&rqstp->rq_arg, ctxt); ret = svc_rdma_xdr_decode_req(&rqstp->rq_arg, ctxt);
if (ret < 0) if (ret < 0)
goto out_err; goto out_err;