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authorTao Guo <glorioustao@gmail.com>2012-06-13 21:17:21 +0200
committerJens Axboe <axboe@kernel.dk>2012-06-13 21:17:21 +0200
commit32587371ad3db2f9d335de10dbd8cffd4fff5669 (patch)
tree46d8de7a745a2b15ade6f9d5f187e743dcb5d1e9 /drivers/tty
parentsplice: fix racy pipe->buffers uses (diff)
downloadlinux-32587371ad3db2f9d335de10dbd8cffd4fff5669.tar.xz
linux-32587371ad3db2f9d335de10dbd8cffd4fff5669.zip
umem: fix up unplugging
Fix a regression introduced by 7eaceaccab5f40 ("block: remove per-queue plugging"). In that patch, Jens removed the whole mm_unplug_device() function, which used to be the trigger to make umem start to work. We need to implement unplugging to make umem start to work, or I/O will never be triggered. Signed-off-by: Tao Guo <Tao.Guo@emc.com> Cc: Neil Brown <neilb@suse.de> Cc: Jens Axboe <axboe@kernel.dk> Cc: Shaohua Li <shli@kernel.org> Cc: <stable@vger.kernel.org> Acked-by: NeilBrown <neilb@suse.de> Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'drivers/tty')
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