On 4/6/22 14:03, Gerd Rausch wrote:
In cases where "pin_user_pages" was used to obtain longerm references,
the pages must be released with "unpin_user_pages".
Fixes: 0d4597c8c5ab ("net/rds: Track user mapped pages through special API")
Signed-off-by: Gerd Rausch <gerd.rausch@xxxxxxxxxx>
Reviewed-by: Sharath Srinivasan <sharath.srinivasan@xxxxxxxxxx>
Regards,
Sharath
---
net/rds/ib_rdma.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/net/rds/ib_rdma.c b/net/rds/ib_rdma.c
index 8f070ee7e742..9d86d6db98c4 100644
--- a/net/rds/ib_rdma.c
+++ b/net/rds/ib_rdma.c
@@ -256,8 +256,7 @@ void __rds_ib_teardown_mr(struct rds_ib_mr *ibmr)
/* FIXME we need a way to tell a r/w MR
* from a r/o MR */
WARN_ON(!page->mapping && irqs_disabled());
- set_page_dirty(page);
- put_page(page);
+ unpin_user_pages_dirty_lock(&page, 1, true);
}
kfree(ibmr->sg);
