Asynchronous I/O latency to a solid-state disk greatly increased
between the 2.6.32 and 3.0 kernels. By removing the plug from
do_io_submit(), we observed a 34% improvement in the I/O latency.

Unfortunately, at this level, we don't know if the request is to
a rotating disk or not.

Signed-off-by: Dave Kleikamp <dave.kleikamp@oracle.com>
Cc: linux-aio@kvack.org
Cc: Chris Mason <chris.mason@oracle.com>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Jeff Moyer <jmoyer@redhat.com>
	modified:   fs/aio.c
sched: don't call task_group() many times in set_task_rq()
It improves perfomance, especially if autogroup enabled.

The size of set_task_rq() was 0x180 and now it is 0xa0.

Signed-off-by: Andrew Vagin <avagin@openvz.org>
	modified:   kernel/sched.c
Modified Voltage Tolerances (AVS) + Enabled PM_FAST for Wifi. Sound related Tweaks
	modified:   arch/arm/mach-msm/avs.h
	modified:   arch/arm/mach-msm/qdsp6v2/pcm_in.c
	modified:   drivers/net/wireless/bcmdhd/dhd_linux.c
	modified:   drivers/net/wireless/bcmdhd/wl_iw.c
	modified:   kernel/rcutree.c
	modified:   sound/soc/msm/msm-lowlatency-pcm-q6.c
	modified:   sound/soc/msm/msm-pcm-voice.c