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Date: Mon, 14 Dec 2015 05:36:05 -0800
From: Christoph Hellwig <hch@infradead.org>
To: Georg Sch?nberger <g.schoenberger@xortex.com>
Cc: Christoph Hellwig <hch@infradead.org>,
	Martin Steigerwald <martin@lichtvoll.de>,
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Subject: Re: XFS and nobarrier with SSDs
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On Mon, Dec 14, 2015 at 10:34:30AM +0000, Georg Sch?nberger wrote:
> OK, thanks for clarification.
> Should the XFS FAQ be updated?
> *http://xfs.org/index.php/XFS_FAQ#Q._Should_barriers_be_enabled_with_storage_which_has_a_persistent_write_cache.3F

Probably.  The text soudns to me like it was written a long time ago
when Linux actually use barriers that also prevent I/O reordering
instead of just issuing the required cache flushes.