From: Douglas Gilbert <dgilbert@interlog.com>
To: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Cc: linux-scsi@vger.kernel.org,
james.bottomley@hansenpartnership.com, rdunlap@xenotime.net
Subject: Re: [PATCH] bsg: SAS SMP pass-through documentation
Date: Thu, 11 Aug 2011 10:50:27 -0400 [thread overview]
Message-ID: <4E43EC33.9010806@interlog.com> (raw)
In-Reply-To: <20110811.165135.1568838937885763665.fujita.tomonori@lab.ntt.co.jp>
On 11-08-11 03:51 AM, FUJITA Tomonori wrote:
> On Wed, 10 Aug 2011 23:35:42 -0400
> Douglas Gilbert<dgilbert@interlog.com> wrote:
>
>> +The bsg driver
>> +==============
>> +bsg is an acronym for Block SCSI Generic. The "block" used in the name of
>> +this driver is a little confusing since each bsg device node (e.g.
>> +/dev/bsg/0:0:0:0 corresponds to /dev/sda which is a SATA disk on this
>> +laptop) is actually a "char" device. The "block" term refers to the
>> +kernel layer which conveys both blocked data and messages to lower layers
>
> What 'blocked data' means?
Data sent through the block layer in which the corresponding command
has an implicit block size. A SCSI READ(10) is an example of such
a command.
> The "block" term simply means that bsg is for the users of 'the block
> layer' (including SCSI)?
You are welcome to send a patch which does:
s/both blocked data and//
next prev parent reply other threads:[~2011-08-11 14:50 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-08-11 3:35 [PATCH] bsg: SAS SMP pass-through documentation Douglas Gilbert
2011-08-11 7:51 ` FUJITA Tomonori
2011-08-11 14:50 ` Douglas Gilbert [this message]
2011-08-11 20:50 ` Randy Dunlap
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