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authorTejun Heo <tj@kernel.org>2008-11-28 07:32:07 +0300
committerJens Axboe <jens.axboe@oracle.com>2008-12-29 10:28:45 +0300
commita185eb4bc84155fff35b602ce99602c010de9634 (patch)
treee052052cbac813166b614325b32584d8bb9beff0 /block/blk-map.c
parent58eea927d2de43dc6f03d1ba2c46e55854b31540 (diff)
downloadlinux-a185eb4bc84155fff35b602ce99602c010de9634.tar.xz
block: fix empty barrier on write-through w/ ordered tag
Empty barrier on write-through (or no cache) w/ ordered tag has no command to execute and without any command to execute ordered tag is never issued to the device and the ordering is never achieved. Force draining for such cases. Signed-off-by: Tejun Heo <tj@kernel.org> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
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