Messages in this thread | | | Date | Thu, 09 Oct 2003 10:02:38 -0400 | From | Jeff Garzik <> | Subject | Re: [PATCH] laptop mode |
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Linux Kernel Mailing List wrote: > ChangeSet 1.1150.1.52, 2003/10/08 10:49:45-03:00, axboe@suse.de > > [PATCH] laptop mode > > Hi Marcelo, > > Lots of people have been using this patch with great success, and it's > been in the SuSE kernel for some months now too. It is also in the -benh > ppc tree > > Basically, it introduces a write back mode of dirty and journal data > that is more suitable for laptops. At the block layer end, it schedules > write out of dirty data after the disk has been idle for 5 seconds. > > Laptop mode can be switched on and off with /proc/sys/vm/laptop_mode. > There is also a block_dump sysctl, which if enabled will dump who > dirties and writes out data. This is very helpful in pinning down who is > causing unnecessary writes to the disk.
Red Hat just dropped this patch since it was suspected of data corruption ;-(
Jeff
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