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From: Bijan Mottahedeh <[email protected]>
To: [email protected]
Cc: [email protected]
Subject: [RFC 0/1] io_uring: process requests completed with -EAGAIN on poll list
Date: Thu,  2 Apr 2020 11:54:24 -0700	[thread overview]
Message-ID: <[email protected]> (raw)

Running fio polled tests with a large number of jobs ends up with stuck
polling threads.  I think this because of polling for requests that have
completed with -EAGAIN.

Running with the RFC applied, and with sufficiently large nvme timeout
values, the fio tests complete.

The RFC creates a retry list similar to the done list.  I'm not sure
if that's the best approach and whether there may be ordering issues
processing the two lists but I haven't seen any problems.

Bijan Mottahedeh (1):
  io_uring: process requests completed with -EAGAIN on poll list

 fs/io_uring.c | 29 ++++++++++++++++++++++++++---
 1 file changed, 26 insertions(+), 3 deletions(-)

-- 
1.8.3.1


             reply	other threads:[~2020-04-02 18:54 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-04-02 18:54 Bijan Mottahedeh [this message]
2020-04-02 18:54 ` [RFC 1/1] io_uring: process requests completed with -EAGAIN on poll list Bijan Mottahedeh
2020-04-03 19:38   ` Jens Axboe

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