Re: [PATCH 1/3] block: Create sysfs knobs to override FLUSH/FUA support flags

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On Tue, Jan 25, 2011 at 11:16:26PM -0800, Darrick J. Wong wrote:
> This patch is the first in a series to refactor the barrier= mount options out
> of the filesystem code.  This patch adds sysfs knobs to disable flush and FUA;
> of course, the automatic default is the safe choice, i.e. to leave them
> enabled.  Obviously, only a seasoned administrator should ever be overriding
> the defaults.

Hmmm... wouldn't it be better to just export flush and fua instead of
ignore_*?  So that the admin can turn things on and off as [s]he seems
fit?  Also, it might be better to export them in a single attribute,
say cache_control or something.  Only subset of the combinations make
sense anyway - none, flush, flush_fua.

Thanks.

-- 
tejun
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