On Wed, Jan 28, 2015 at 03:57:05PM -0800, Darrick J. Wong wrote: > Yes, that wait_for_page_writeback() was replaced with a call to > wait_for_stable_page() upstream, so it'll probably work for your 3.10 > kernel. > > (I also wonder why not jump to a newer LTS kernel, but that's neither > here nor there.) Nikhilesh said that he was using a 64-bit android device. I'm going to guess it is based off of the AOSP kernel for the Nexus 9, which is a 64-bit android device that uses 3.10 as a base. It's not *really* a 3.10 kernel, though, becausre it looks like bits and pieces of the VFS was forward ported to a somewhat newer version so they could backport F2FS to the Nexus 9 kernel. But I'm guessing he's using it because there are device drivers he needs that might not be available without a lot of forward-porting work on a newer kernel. If you are interested in trying to use a somewhat newer version of ext4, I just *happen* to have a backport of the 3.18 version of ext4 on top of a stock version of 3.10. You can find it at the backport-to-3.10 branch of the ext4.git tree on git.kernel.org. If you are starting from the AOSP version of the Nexus 9 kernel, the patch series from that branch won't apply 100% cleanly, because of the changes resulting from the F2FS backport. It's relatively straight-forward though to use the backport-to-3.10 patch series as a model to get a version of 3.18 ext4 on top of the AOSP kernel, though; it's mostly dropping or reworking patches that were no longer necessary thanks to the F2FS backport. If there is interest, I can look into what might be involved in making a git repo of an AOSP kernel with the 3.18 ext4 code backported to it available. I won't give any warrantees, of course, since the AOSP kernel doesn't build on x86 and so I can't easily run regression tests on it. So if it breaks, you will get to keep both pieces. I will try to at least look at bug reports, though, and I can say that 3.18 backport on the stock 3.10 kernel survives xfstests much better than the 3.10 version of ext4, since a modern xfstests very quickly caused the stock 3.10 kernel to panic. :-) - Ted -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
