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linux/drivers/block
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Ken Chen a299738283 [PATCH] use cheaper elv_queue_empty when unplug a device 
In function __generic_unplug_device(), kernel can use a cheaper function
elv_queue_empty() instead of more expensive elv_next_request to find
whether the queue is empty or not.  blk_run_queue can also made conditional
on whether queue's emptiness before calling request_fn().

Signed-off-by: Jens Axboe <axboe@suse.de>
Signed-off-by: Ken Chen <kenneth.w.chen@intel.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-04-16 15:25:43 -07:00
..
aoe Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
paride Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
acsi_slm.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
acsi.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
amiflop.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
as-iosched.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
ataflop.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
cciss_cmd.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
cciss_scsi.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
cciss_scsi.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
cciss.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
cciss.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
cfq-iosched.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
cpqarray.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
cpqarray.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
cryptoloop.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
DAC960.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
DAC960.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
deadline-iosched.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
elevator.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
floppy.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
genhd.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
ida_cmd.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
ida_ioctl.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
ioctl.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
Kconfig Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
Kconfig.iosched Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
ll_rw_blk.c [PATCH] use cheaper elv_queue_empty when unplug a device 2005-04-16 15:25:43 -07:00
loop.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
Makefile Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
nbd.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
noop-iosched.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
pktcdvd.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
ps2esdi.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
rd.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
scsi_ioctl.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
smart1,2.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
swim3.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
swim_iop.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
sx8.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
ub.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
umem.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
viodasd.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
xd.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
xd.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
z2ram.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00