block: reorganize QUEUE_ORDERED_* constants

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Separate out ordering type (drain,) and action masks (preflush,
postflush, fua) from visible ordering mode selectors
(QUEUE_ORDERED_*).  Ordering types are now named QUEUE_ORDERED_BY_*
while action masks are named QUEUE_ORDERED_DO_*.

This change is necessary to add QUEUE_ORDERED_DO_BAR and make it
optional to improve empty barrier implementation.

Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>

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Tejun Heo 2008-11-28 13:32:02 +09:00 • committed by Jens Axboe

parent ba744d5e29

commit 313e42999d

2 changed files with 33 additions and 26 deletions

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35

include/linux/blkdev.h

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