Richard raised concerns about hard drive spindown.
authorVictor Lowther <victor.lowther@gmail.com>
Sat, 28 Jun 2008 16:38:28 +0000 (11:38 -0500)
committerVictor Lowther <victor.lowther@gmail.com>
Sat, 5 Jun 2010 18:32:49 +0000 (13:32 -0500)
commit6662c9f80bc8e914e826a009cdf0755d442687c8
tree379c5c34d925b935682e878bcd8ba39d6348178f
parent1ab9f81812861c9fbab59c53a1fd50b3077d6a0f
Richard raised concerns about hard drive spindown.

So the harddrive hook no longer tries to spin the drive down pending
some sort of consensus on the right thing to do to make the hard drive
save power.

In the mean time, though, just flat-out disable write caching on the
hard drive.  I know that there are barriers and flushes that the ATA layer
uses to ensure that data really is written to the disk, but hard drive cache
isn't battery backed.
pm/power.d/harddrive
pm/power.d/laptop-mode