Artem Bityutskiy 8eab945c56 sunrpc: make the cache cleaner workqueue deferrable ... This patch makes the cache_cleaner workqueue deferrable, to prevent unnecessary system wake-ups, which is very important for embedded battery-powered devices. do_cache_clean() is called every 30 seconds at the moment, and often makes the system wake up from its power-save sleep state. With this change, when the workqueue uses a deferrable timer, the do_cache_clean() invocation will be delayed and combined with the closest "real" wake-up. This improves the power consumption situation. Note, I tried to create a DECLARE_DELAYED_WORK_DEFERRABLE() helper macro, similar to DECLARE_DELAYED_WORK(), but failed because of the way the timer wheel core stores the deferrable flag (it is the LSBit in the time->base pointer). My attempt to define a static variable with this bit set ended up with the "initializer element is not constant" error. Thus, I have to use run-time initialization, so I created a new cache_initialize() function which is called once when sunrpc is being initialized. Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>		2010-07-06 12:27:48 -04:00
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acpi	Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6	2010-05-28 14:42:18 -07:00
asm-generic	numa: introduce numa_mem_id()- effective local memory node id	2010-05-27 09:12:57 -07:00
crypto
drm
keys
linux	sunrpc: make the cache cleaner workqueue deferrable	2010-07-06 12:27:48 -04:00
math-emu
media
mtd
net	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6	2010-05-28 10:18:40 -07:00
pcmcia
rdma
rxrpc
scsi
sound
trace	drop unused dentry argument to ->fsync	2010-05-27 22:05:02 -04:00
video
xen
Kbuild