From mboxrd@z Thu Jan  1 00:00:00 1970
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From: Jeff Moyer <jmoyer@redhat.com>
To: Jens Axboe <axboe@fb.com>
Cc: <linux-kernel@vger.kernel.org>, <linux-fsdevel@vger.kernel.org>,
	<linux-block@vger.kernel.org>
Subject: Re: [PATCH 6/6] writeback: throttle buffered writeback
References: <1458669320-6819-1-git-send-email-axboe@fb.com>
	<1458669320-6819-7-git-send-email-axboe@fb.com>
Date: Tue, 22 Mar 2016 16:12:04 -0400
In-Reply-To: <1458669320-6819-7-git-send-email-axboe@fb.com> (Jens Axboe's
	message of "Tue, 22 Mar 2016 11:55:20 -0600")
Message-ID: <x49twjyb7cb.fsf@segfault.boston.devel.redhat.com>
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Hi, Jens,

Jens Axboe <axboe@fb.com> writes:

> If the device has write back caching, 'wb_cache_delay' delays by
> this amount of usecs when a write completes before allowing more.

What's the reason behind that?

Thanks!
Jeff