On Mon 20-08-12 21:22:09, Wu Fengguang wrote: > On Mon, Aug 20, 2012 at 02:39:50PM +0200, Michal Hocko wrote: > > On Mon 20-08-12 10:06:30, Mel Gorman wrote: > > > On Mon, Aug 20, 2012 at 07:59:24AM +0800, Fengguang Wu wrote: > > > > Hi Mel, > > > > > > > > FYI, kernel build failed on > > > > > > > > tree: git://github.com/mstsxfx/memcg-devel.git since-3.5 > > > > head: a49301bd151e60fc22dc5b934358a9bb80bed7b3 > > > > commit: c4183d4ae946b7965f2657cf97da742c87fa9d96 [41/99] nfs: enable swap on NFS > > > > config: m32r-m32104ut_defconfig (attached as .config) > > > > > > > > All related error/warning messages: > > > > > > > > fs/built-in.o: In function `nfs_file_direct_read': > > > > (.text+0xa0998): undefined reference to `get_kernel_page' > > > > fs/built-in.o: In function `nfs_file_direct_write': > > > > (.text+0xa10b8): undefined reference to `get_kernel_page' > > > > > > > > > > Michal, as this is the memcg tree and not akpm or linux-next could this > > > build error be a merge problem in your tree? > > > > Hmm, maybe my tree is missing some follow up fix but git diff sees > > nothin relevant. Neverheless I have noticed that both CONFIG_SWAP and > > CONFIG_NFS_SWAP are disabled. get_kernel_page is defined in mm/swap.c > > but that one should be compiled in regardless the SWAP configuration. > > I find that at _that_ commit, get_kernel_page() is defined in > mm/memory.c which will only be compiled on CONFIG_MMU. > > The get_kernel_page*() definitions are later moved to mm/swap.c by > > commit 6503ced02700f5f561c8a2a66f5d93117fb230cd > Author: Mel Gorman <mgorman@xxxxxxx> > CommitDate: Thu Jul 26 11:25:53 2012 +0200 > > mm-add-get_kernel_page-for-pinning-of-kernel-addresses-for-i-o-fix But that means that it is not CONFIG_MMU dependent anymore, right? -- Michal Hocko SUSE Labs -- To unsubscribe from this list: send the line "unsubscribe kernel-janitors" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
