io_uring: kbuf: inline io_kbuf_recycle_ring()

Make io_kbuf_recycle_ring() inline since it is the fast path of
provided buffer.

Signed-off-by: Hao Xu <howeyxu@tencent.com>
Link: https://lore.kernel.org/r/20220623130126.179232-1-hao.xu@linux.dev
Signed-off-by: Jens Axboe <axboe@kernel.dk>

1 files changed, 0 insertions, 28 deletions

diff --git a/io_uring/kbuf.c b/io_uring/kbuf.c
index 8bf47e49ea5b..5e00f16e89b8 100644
--- a/io_uring/kbuf.c
+++ b/io_uring/kbuf.c
@@ -74,34 +74,6 @@ void io_kbuf_recycle_legacy(struct io_kiocb *req, unsigned issue_flags)
 	return;
 }
 
-void io_kbuf_recycle_ring(struct io_kiocb *req)
-{
-	/*
-	 * We don't need to recycle for REQ_F_BUFFER_RING, we can just clear
-	 * the flag and hence ensure that bl->head doesn't get incremented.
-	 * If the tail has already been incremented, hang on to it.
-	 * The exception is partial io, that case we should increment bl->head
-	 * to monopolize the buffer.
-	 */
-	if (req->buf_list) {
-		if (req->flags & REQ_F_PARTIAL_IO) {
-			/*
-			 * If we end up here, then the io_uring_lock has
-			 * been kept held since we retrieved the buffer.
-			 * For the io-wq case, we already cleared
-			 * req->buf_list when the buffer was retrieved,
-			 * hence it cannot be set here for that case.
-			 */
-			req->buf_list->head++;
-			req->buf_list = NULL;
-		} else {
-			req->buf_index = req->buf_list->bgid;
-			req->flags &= ~REQ_F_BUFFER_RING;
-		}
-	}
-	return;
-}
-
 unsigned int __io_put_kbuf(struct io_kiocb *req, unsigned issue_flags)
 {
 	unsigned int cflags;