[PATCH for-5.20 5/6] io_uring: remove duplicate kbuf release

[Hao Xu <hao.xu@linux.dev>]

From: Hao Xu <howeyxu@tencent.com>

__io_req_complete_put() is called by __io_req_complete_post, and before
that we already put kbuf, no need to do that in __io_req_complete_put()
again.

Signed-off-by: Hao Xu <howeyxu@tencent.com>
---
 io_uring/io_uring.c | 6 ------
 1 file changed, 6 deletions(-)

diff --git a/io_uring/io_uring.c b/io_uring/io_uring.c
index 1572ebe3cff1..a94ddd0ba507 100644
--- a/io_uring/io_uring.c
+++ b/io_uring/io_uring.c
@@ -1245,12 +1245,6 @@ static void __io_req_complete_put(struct io_kiocb *req)
 			}
 		}
 		io_req_put_rsrc(req);
-		/*
-		 * Selected buffer deallocation in io_clean_op() assumes that
-		 * we don't hold ->completion_lock. Clean them here to avoid
-		 * deadlocks.
-		 */
-		io_put_kbuf_comp(req);
 		io_dismantle_req(req);
 		io_put_task(req->task, 1);
 		wq_list_add_head(&req->comp_list, &ctx->locked_free_list);
-- 
2.25.1