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authorShaohua Li <shli@kernel.org>2012-07-31 09:08:15 +0200
committerJens Axboe <axboe@kernel.dk>2012-07-31 09:08:15 +0200
commit2a7d5559b346574057dce4672d1ed9aaa9d1e685 (patch)
tree55d611455d1ca07ed03b35a114350801c7865022 /drivers
parent9cbb17508808f8a6bdd83354b61e126ac4fa6fed (diff)
downloadlinux-2a7d5559b346574057dce4672d1ed9aaa9d1e685.tar.bz2
block: stack unplug
MD raid1 prepares to dispatch request in unplug callback. If make_request in low level queue also uses unplug callback to dispatch request, the low level queue's unplug callback will not be called. Recheck the callback list helps this case. Signed-off-by: Shaohua Li <shli@fusionio.com> Signed-off-by: NeilBrown <neilb@suse.de> Signed-off-by: Jens Axboe <axboe@kernel.dk>
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