From: "Aurélien Aptel" <aaptel@suse.com>
To: Yejune Deng <yejune.deng@gmail.com>, Steve French <smfrench@gmail.com>
Cc: Steve French <sfrench@samba.org>,
CIFS <linux-cifs@vger.kernel.org>,
samba-technical <samba-technical@lists.samba.org>,
LKML <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] cifs: fix msleep() is imprecise
Date: Thu, 07 Jan 2021 15:03:17 +0100 [thread overview]
Message-ID: <87r1mw3kuy.fsf@suse.com> (raw)
In-Reply-To: <CABWKuGUj41Qa-y_cApNNvLfTQPLJi2adr+ZKN6RpwFoemskoKg@mail.gmail.com>
Yejune Deng <yejune.deng@gmail.com> writes:
> No。I just see Documentation/timers/timers-howto.rst and don't
> recommend using msleep() for (1ms - 20ms). It recommends using
> usleep_range(). And fsleep() is flexible sleeping.
I think what Steve is asking is does using fsleep() changes anything
regarding yielding i.e. does it affect how tasks/processes get
scheduled. AFAIK, this msleep(1) in the code is to give a hint and let
the kernel run other tasks, in particular the ones waiting on the
request and response queue.
Cheers,
--
Aurélien Aptel / SUSE Labs Samba Team
GPG: 1839 CB5F 9F5B FB9B AA97 8C99 03C8 A49B 521B D5D3
SUSE Software Solutions Germany GmbH, Maxfeldstr. 5, 90409 Nürnberg, DE
GF: Felix Imendörffer, Mary Higgins, Sri Rasiah HRB 247165 (AG München)
prev parent reply other threads:[~2021-01-07 14:04 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-12-10 9:07 [PATCH] cifs: fix msleep() is imprecise Yejune Deng
2021-01-06 4:26 ` Steve French
2021-01-07 11:08 ` Yejune Deng
2021-01-07 14:03 ` Aurélien Aptel [this message]
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