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From: Jens Axboe <axboe@kernel.dk>
To: Nitesh Shetty <nj.shetty@samsung.com>,
	linux-block@vger.kernel.org, linux-kernel@vger.kernel.org
Cc: axboe@kernel.dk, linux-nvme@lists.infradead.org, joshi.k@samsung.com
Subject: Re: [PATCH v3] blk: optimization for classic polling
Date: Tue, 13 Feb 2018 09:12:18 -0700	[thread overview]
Message-ID: <f797a075-4ef2-410f-4eda-fa70d426d58f@kernel.dk> (raw)
In-Reply-To: <1518536892-2051-1-git-send-email-nj.shetty@samsung.com>

On 2/13/18 8:48 AM, Nitesh Shetty wrote:
> This removes the dependency on interrupts to wake up task. Set task
> state as TASK_RUNNING, if need_resched() returns true,
> while polling for IO completion.
> Earlier, polling task used to sleep, relying on interrupt to wake it up.
> This made some IO take very long when interrupt-coalescing is enabled in
> NVMe.

Thanks, applied.

-- 
Jens Axboe

  reply	other threads:[~2018-02-13 16:12 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <CGME20180208143655epcas1p444bf34705526b7839a5a135f82761aad@epcas1p4.samsung.com>
2083-05-30  4:21 ` [PATCH] " Nitesh Shetty
2018-02-08 15:27   ` Keith Busch
2018-02-08 16:03     ` Sagi Grimberg
2018-02-12 15:50   ` Bart Van Assche
     [not found]   ` <CGME20180213154752epcas1p35e3c13d150d2108a06342781ec5e64d7@epcas1p3.samsung.com>
2018-02-13 15:48     ` [PATCH v3] " Nitesh Shetty
2018-02-13 16:12       ` Jens Axboe [this message]
     [not found]   ` <CGME20180213082701epcas1p4d92a86f127a0918fb9d62120bd121cb6@epcas1p4.samsung.com>
2018-02-13 18:56     ` [PATCH v2 RESENT] " Nitesh Shetty
2018-02-13 14:42       ` Jens Axboe
2018-02-20 13:21   ` [PATCH] " Peter Zijlstra
2018-02-20 16:27     ` Keith Busch
2018-02-20 22:37     ` Jens Axboe
2018-02-21  8:32       ` Peter Zijlstra
2018-10-10 18:52   ` Florian Fainelli

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