On Mon, 2007-01-08 at 22:54 +0000, Christoph Hellwig wrote:
quoted text
> this doesn't look like a full first class flag to me yet.  Don't
> we need to check for buffer_unwritten in the places we're checking
> for buffer_delay so we can stop setting buffer_delay for unwritten
> buffers?

Yep, that does need to be done.  The first of the two calls
to set_buffer_delay can be removed from __xfs_get_blocks also
(currently there is an implied association between Delay and
Unwritten, which should be removed now).

I have a vague memory of some magic sysrq code (from 2.4 days)
which counted BH state on a page - if that still exists it'd
need to be updated too, but I can't seem to find it in current
2.6 kernels (used to live in buffer.c in ye olde 2.4 days).  It
probably left us around the time of PG_private's introduction.

cheers.

-- 
Nathan

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