On Thu, Dec 06, 2012 at 04:19:37PM -0500, Phil Vandry wrote: > Hello Freerunner users, > > I am interested in using the new f2fs filesystem created by Kim Jaegeuk > at Samsung on the µSD cards of a bunch of GTA02s. Right now it's > undergoing testing in linux-next and there are several fresh discussion > threads about it on lkml. I intend to wait until the code has stabilized > a bit before making the attempt. > > First, is this a good idea? Also, is anyone else interested? > > The problem is that the code only compiles against recent Linux kernels > and the newest kernel available for GTA02 is 2.6.39. I see two options: > > 1. Get Linux 3.7 working on the GTA02
3.2 kernel works pretty good https://github.com/shr-distribution/linux/tree/om-gta02/3.2/master there are branches also for 3.5 and GNUtoo is working on it. Cheers, > > 2. Get f2fs working on Linux 2.6.39 > > Both options are challenging but I have to go for #2 because I don't > have the knowledge to do #1. > > For #1: There are quite a few differences between upstream 2.6.39 and > om-gta02-2.6.39 kernels. Some of the patches I understand and could > re-apply against a more recent kernel, some of them have already been > integrated upstream, but others are mysterious to me and even if I could > apply them I can't guess whether or not they ought to still be applied. > One big issue is that the glamo driver is not present upstream (and > ar6000 also?). > > For #2: I have already prepared a patch to backport f2fs to > 2.6.34/2.6.39 but there have been quite a lot of changes in the vfs and > other areas in the intervening time. The patch is 817 lines long. Most > of it is straightforward, though there were one or two tricky bits. The > only thing I have achieved so far is getting it to compile with no > errors and no warnings. That's a start, but it's not a guarantee that > the filesystem will actually work! > > A significant problem with #2 is maintenance and bug fixes going > forward. I would have to backport all future changes to f2fs. > > Anyway, for the information of anyone who's interested, I plan to at > least give option #2 a try and see if I might be lucky :-) > > -v > > _______________________________________________ > Openmoko community mailing list > [email protected] > http://lists.openmoko.org/mailman/listinfo/community -- Martin 'JaMa' Jansa jabber: [email protected]
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