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authorJens Axboe <jens.axboe@oracle.com>2007-09-27 13:01:25 +0200
committerJens Axboe <jens.axboe@oracle.com>2007-10-16 11:03:56 +0200
commitbf2de6f5a4faf0197268f18d08969b003b87b6e8 (patch)
tree16830a15a7effea352445a7aba5dbb433314d3eb /drivers/md/dm.h
parentc07e2b41291853b19fff11ceee3657df252a4e42 (diff)
block: Initial support for data-less (or empty) barrier support
This implements functionality to pass down or insert a barrier in a queue, without having data attached to it. The ->prepare_flush_fn() infrastructure from data barriers are reused to provide this functionality. Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
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