[PATCH 3/6] io_uring: add REQ_F_APOLL_MULTISHOT for requests

From: Hao Xu <haoxu@linux.alibaba.com>
To: Jens Axboe <axboe@kernel.dk>
Cc: io-uring@vger.kernel.org, Pavel Begunkov <asml.silence@gmail.com>,
	Joseph Qi <joseph.qi@linux.alibaba.com>
Subject: [PATCH 3/6] io_uring: add REQ_F_APOLL_MULTISHOT for requests
Date: Fri,  3 Sep 2021 19:00:46 +0800	[thread overview]
Message-ID: <20210903110049.132958-4-haoxu@linux.alibaba.com> (raw)
In-Reply-To: <20210903110049.132958-1-haoxu@linux.alibaba.com>

add a flag to indicate multishot mode for fast poll. Currently only
accept use it, but there may be more operations leveraging it in the
future.

Signed-off-by: Hao Xu <haoxu@linux.alibaba.com>
---
 fs/io_uring.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/fs/io_uring.c b/fs/io_uring.c
index c48d43207f57..d6df60c4cdb9 100644
--- a/fs/io_uring.c
+++ b/fs/io_uring.c
@@ -720,6 +720,7 @@ enum {
 	REQ_F_NOWAIT_READ_BIT,
 	REQ_F_NOWAIT_WRITE_BIT,
 	REQ_F_ISREG_BIT,
+	REQ_F_APOLL_MULTISHOT_BIT,
 
 	/* not a real bit, just to check we're not overflowing the space */
 	__REQ_F_LAST_BIT,
@@ -773,6 +774,8 @@ enum {
 	REQ_F_REFCOUNT		= BIT(REQ_F_REFCOUNT_BIT),
 	/* there is a linked timeout that has to be armed */
 	REQ_F_ARM_LTIMEOUT	= BIT(REQ_F_ARM_LTIMEOUT_BIT),
+	/* fast poll multishot mode */
+	REQ_F_APOLL_MULTISHOT	= BIT(REQ_F_APOLL_MULTISHOT_BIT),
 };
 
 struct async_poll {
-- 
2.24.4

