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Re: XFS and write barriers.

To: Christoph Hellwig <hch@xxxxxxxxxxxxx>
Subject: Re: XFS and write barriers.
From: Neil Brown <neilb@xxxxxxx>
Date: Mon, 26 Mar 2007 11:11:11 +1000
Cc: David Chinner <dgc@xxxxxxx>, xfs@xxxxxxxxxxx
In-reply-to: message from Christoph Hellwig on Friday March 23
References: <17923.11463.459927.628762@notabene.brown> <20070323053043.GD32602149@melbourne.sgi.com> <20070323095055.GA13478@infradead.org>
Sender: xfs-bounce@xxxxxxxxxxx
On Friday March 23, hch@xxxxxxxxxxxxx wrote:
> 
> That would be really bad.  XFS metadata buffers can have multiple bios
> and retrying a single one would be rather difficult.
> 

But would you have multiple bios for a write that had BIO_RW_BARRIER
set?  That would seem .... odd.

NeilBrown


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