Plans for BTRFS in Fedora

Peter Jones pjones at
Thu Feb 24 13:47:26 UTC 2011

On 02/23/2011 06:01 PM, James Ralston wrote:
> On 2011-02-23 at 13:41-05 Peter Jones<pjones at>  wrote:
>> dm-crypt still just throws REQ_FLUSH away instead of figuring out
>> the block remaps involved and issuing the right bios.  Of course,
>> this is a problem with dm-crypt and _any_ filesystem.
> Are you sure that's still the case?

Well, when I said "So, don't hold me to this, but it looks as if..." in
the sentence before the one you quoted, I was attempting to imply that
I was not, in fact, sure, and had only done the most trivial read of the
code in question.

> Because this patchset appears to add REQ_FLUSH support to dm:
> ...and that patchset is included in 2.6.38-rc6.

The second patch in that patchset is the one I referenced in the email
you're replying to. But I guess I misread it and it does seem to say it
fixes dm-crypt as well.


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		-- Dan Rather, first landing of Columbia

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