Re: [PATCH, RFC] Don't do page stablization if !CONFIG_BLKDEV_INTEGRITY

On Thu, Mar 08, 2012 at 04:38:08PM -0500, Chris Mason wrote:

Btrfs currently does this, and the DIF code is by definition right
before the write.  The pages really only get set writeback when they are
being sent in flight, so the waiting being done by the stable pages
patch is file_write or page_mkwrite being polite and waiting for the IO
to finish before changing the page.

Right before submission to the bio layer?  Or right before the device
driver sends the request to the host bus adapter?  I was thinking of
the latter....

					- Ted