linux-kernel - Re: [PATCH 03/18] libosd: OSDv1 Headers

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Message-ID: <49119FD0.1000801@panasas.com>
Date:	Wed, 05 Nov 2008 15:29:52 +0200
From:	Boaz Harrosh <bharrosh@...asas.com>
To:	James Bottomley <James.Bottomley@...senPartnership.com>
CC:	Andrew Morton <akpm@...ux-foundation.org>, michaelc@...wisc.edu,
	fujita.tomonori@....ntt.co.jp, jeff@...zik.org,
	osd-dev@...n-osd.org, linux-scsi@...r.kernel.org,
	linux-kernel@...r.kernel.org, Sami.Iren@...gate.com, pw@...d.com
Subject: Re: [PATCH 03/18] libosd: OSDv1 Headers

James Bottomley wrote:
> On Wed, 2008-11-05 at 14:54 +0200, Boaz Harrosh wrote:
>>>> +    struct _osd_io_info {
>>>> +            struct bio *bio;
>>>> +            u64 total_bytes;
>>> u64(!)
>>>
>> Do you mean that I need to use __u64? or what do you mean?
> 
> He means you've used u64 in a header without actually including any file
> that defines the typedef.  Linux header files aren't supposed to depend
> on include order.  They're supposed to stand alone.  The point is that
> if I include just #include osd_initiator.h into an empty kernel file
> it's not supposed to spit undefined errors.
> 
> Right at the moment the u64 probably works because blkdev.h #includes
> the file which defines it, but you're not supposed to rely on that.
> 
> James
> 

I have addressed that issue. The osd_initiator.h includes the
osd_protocol.h file. osd_protocol.h does include all the types
needed. All of the osd_initiator.h types are derived from
osd_protocol.h, the only added definitions are from blkdev.h.

The very first #include in osd_initiator.c is osd_initiator.h
which preforms exactly the check you suggest.

Boaz
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