From: Alex Bligh <alex@alex.org.uk>
To: Vivek Goyal <vgoyal@redhat.com>
Cc: Tejun Heo <tj@kernel.org>,
linux-fsdevel@vger.kernel.org, Alex Bligh <alex@alex.org.uk>
Subject: Re: Questions on block drivers, REQ_FLUSH and REQ_FUA
Date: Wed, 25 May 2011 20:58:53 +0100 [thread overview]
Message-ID: <938055594BA6CF282C6812B0@nimrod.local> (raw)
In-Reply-To: <20110525191024.GB6724@redhat.com>
Vivek,
--On 25 May 2011 15:10:24 -0400 Vivek Goyal <vgoyal@redhat.com> wrote:
>> Thanks once again. My driver is currently request-based. Is there any
>> significant advantage converting it to be bio based?
>
> Some people try to avoid the ovhead of elevator if device is very fast
> and try to go for bio based driver. Or they create both the modes and
> let user choose one.
Ah, so bio means no elevator. I'd missed that through looking only
at the request stuff. Right now the elevator is a reasonable approximation
of what I need, but it's good to know I could do that too if I am
feeling masochistic. Thanks.
--
Alex Bligh
next prev parent reply other threads:[~2011-05-25 19:58 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-05-24 21:29 Questions on block drivers, REQ_FLUSH and REQ_FUA Alex Bligh
2011-05-24 22:32 ` Vivek Goyal
2011-05-24 22:37 ` Vivek Goyal
2011-05-25 8:06 ` Alex Bligh
2011-05-25 8:59 ` Tejun Heo
2011-05-25 15:54 ` Alex Bligh
2011-05-25 16:43 ` Tejun Heo
2011-05-25 17:43 ` Alex Bligh
2011-05-25 19:10 ` Vivek Goyal
2011-05-25 19:58 ` Alex Bligh [this message]
2011-05-25 19:15 ` Vivek Goyal
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