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From: Xiaoguang Wang <[email protected]>
To: [email protected]
Cc: [email protected], [email protected],
	Xiaoguang Wang <[email protected]>
Subject: [PATCH v2 1/2] io_uring: don't fail links for EAGAIN error in IOPOLL mode
Date: Tue, 16 Jun 2020 02:06:37 +0800	[thread overview]
Message-ID: <[email protected]> (raw)
In-Reply-To: <[email protected]>

In IOPOLL mode, for EAGAIN error, we'll try to submit io request
again using io-wq, so don't fail rest of links if this io request
has links.

Signed-off-by: Xiaoguang Wang <[email protected]>
---
 fs/io_uring.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/io_uring.c b/fs/io_uring.c
index 61fca5afaac8..a3119fecfe40 100644
--- a/fs/io_uring.c
+++ b/fs/io_uring.c
@@ -1974,7 +1974,7 @@ static void io_complete_rw_iopoll(struct kiocb *kiocb, long res, long res2)
 	if (kiocb->ki_flags & IOCB_WRITE)
 		kiocb_end_write(req);
 
-	if (res != req->result)
+	if (res != -EAGAIN && res != req->result)
 		req_set_fail_links(req);
 	req->result = res;
 	if (res != -EAGAIN)
-- 
2.17.2


  reply	other threads:[~2020-06-15 18:06 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-06-15 18:06 [PATCH v2 0/2] add proper memory barrier for IOPOLL mode Xiaoguang Wang
2020-06-15 18:06 ` Xiaoguang Wang [this message]
2020-06-15 18:06 ` [PATCH v2 2/2] io_uring: add memory barrier to synchronize io_kiocb's result and iopoll_completed Xiaoguang Wang
2020-06-17  1:22 ` [PATCH v2 0/2] add proper memory barrier for IOPOLL mode Jens Axboe

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