linux-kernel - [RFC for-next 4/4] io_uring/rw: enable bio caches for IRQ rw

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Message-Id: <11cf38513c45083955d4ee2cedbb46df0a9f6081.1666114003.git.asml.silence@gmail.com>
Date:   Tue, 18 Oct 2022 19:47:16 +0100
From:   Pavel Begunkov <asml.silence@...il.com>
To:     Jens Axboe <axboe@...nel.dk>, linux-block@...r.kernel.org
Cc:     io-uring@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-fsdevel@...r.kernel.org,
        Pavel Begunkov <asml.silence@...il.com>
Subject: [RFC for-next 4/4] io_uring/rw: enable bio caches for IRQ rw

Now we can use IOCB_ALLOC_CACHE not only for iopoll'ed reads/write but
also for normal IRQ driven I/O.

Signed-off-by: Pavel Begunkov <asml.silence@...il.com>
---
 io_uring/rw.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/io_uring/rw.c b/io_uring/rw.c
index 100de2626e47..ff609b762742 100644
--- a/io_uring/rw.c
+++ b/io_uring/rw.c
@@ -667,6 +667,7 @@ static int io_rw_init_file(struct io_kiocb *req, fmode_t mode)
 	ret = kiocb_set_rw_flags(kiocb, rw->flags);
 	if (unlikely(ret))
 		return ret;
+	kiocb->ki_flags |= IOCB_ALLOC_CACHE;
 
 	/*
 	 * If the file is marked O_NONBLOCK, still allow retry for it if it
@@ -682,7 +683,7 @@ static int io_rw_init_file(struct io_kiocb *req, fmode_t mode)
 			return -EOPNOTSUPP;
 
 		kiocb->private = NULL;
-		kiocb->ki_flags |= IOCB_HIPRI | IOCB_ALLOC_CACHE;
+		kiocb->ki_flags |= IOCB_HIPRI;
 		kiocb->ki_complete = io_complete_rw_iopoll;
 		req->iopoll_completed = 0;
 	} else {
-- 
2.38.0