linux-kernel - Re: [PATCH] [SCSI] sd: set BIO_MAPPED_INTEGRITY bit correctly in sd_dif

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Message-ID: <20120307155624.GC19570@parisc-linux.org>
Date:	Wed, 7 Mar 2012 08:56:25 -0700
From:	Matthew Wilcox <matthew@....cx>
To:	santosh nayak <santoshprasadnayak@...il.com>
Cc:	JBottomley@...allels.com, linux-scsi@...r.kernel.org,
	linux-kernel@...r.kernel.org, kernel-janitors@...r.kernel.org,
	mkp@....net
Subject: Re: [PATCH] [SCSI] sd: set BIO_MAPPED_INTEGRITY bit correctly in
	sd_dif_prepare().

On Wed, Mar 07, 2012 at 08:11:35PM +0530, santosh nayak wrote:
> From: Santosh Nayak <santoshprasadnayak@...il.com>
> 
> Value of BIO_MAPPED_INTEGRITY is 11. Intention was to set the 11th bit.

Also, can we introduce:

#define bio_set_flag(bio, flag)	((bio)->bi_flags |= (1 << (flag)))

Then hunt down and kill all the places that manipulate bi_flags by hand?
We might also need:

#define bio_set_flag_atomic(bio, flag) set_bit(&(bio)->bi_flags, (flag))

-- 
Matthew Wilcox				Intel Open Source Technology Centre
"Bill, look, we understand that you're interested in selling us this
operating system, but compare it to ours.  We can't possibly take such
a retrograde step."
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