This is a note to let you know that I've just added the patch titled
RDMA/rtrs-srv: Jump to dereg_mr label if allocate iu fails
to the 5.10-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
rdma-rtrs-srv-jump-to-dereg_mr-label-if-allocate-iu-.patch
and it can be found in the queue-5.10 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 6eaf566b0792666568e22b653c924f6953092d3d
Author: Guoqing Jiang <guoqing.jiang@xxxxxxxxxxxxxxx>
Date: Thu Dec 17 15:19:02 2020 +0100
RDMA/rtrs-srv: Jump to dereg_mr label if allocate iu fails
[ Upstream commit f77c4839ee8f4612dcb6601602329096030bd813 ]
The rtrs_iu_free is called in rtrs_iu_alloc if memory is limited, so we
don't need to free the same iu again.
Fixes: 9cb837480424 ("RDMA/rtrs: server: main functionality")
Link: https://lore.kernel.org/r/20201217141915.56989-7-jinpu.wang@xxxxxxxxxxxxxxx
Signed-off-by: Guoqing Jiang <guoqing.jiang@xxxxxxxxxxxxxxx>
Reviewed-by: Gioh Kim <gi-oh.kim@xxxxxxxxxxxxxxx>
Signed-off-by: Jack Wang <jinpu.wang@xxxxxxxxxxxxxxx>
Signed-off-by: Jason Gunthorpe <jgg@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/infiniband/ulp/rtrs/rtrs-srv.c b/drivers/infiniband/ulp/rtrs/rtrs-srv.c
index 0fd2a7f8f9f2..43806180f85e 100644
--- a/drivers/infiniband/ulp/rtrs/rtrs-srv.c
+++ b/drivers/infiniband/ulp/rtrs/rtrs-srv.c
@@ -671,7 +671,7 @@ static int map_cont_bufs(struct rtrs_srv_sess *sess)
if (!srv_mr->iu) {
err = -ENOMEM;
rtrs_err(ss, "rtrs_iu_alloc(), err: %d\n", err);
- goto free_iu;
+ goto dereg_mr;
}
}
/* Eventually dma addr for each chunk can be cached */
@@ -687,7 +687,6 @@ static int map_cont_bufs(struct rtrs_srv_sess *sess)
srv_mr = &sess->mrs[mri];
sgt = &srv_mr->sgt;
mr = srv_mr->mr;
-free_iu:
rtrs_iu_free(srv_mr->iu, sess->s.dev->ib_dev, 1);
dereg_mr:
ib_dereg_mr(mr);
