The vmsplice rework in -mm breaks nommu: fs/built-in.o: In function `splice_setup_vma': fs/splice.c:1272: undefined reference to `may_expand_vm' fs/splice.c:1272: undefined reference to `protection_map' fs/splice.c:1272: undefined reference to `insert_vm_struct' fs/splice.c:1272: undefined reference to `vm_stat_account'
This is going to be non-trivial to wire up properly on nommu, and it's debateable whether there's even any point in trying. For now, disable vmsplice if CONFIG_MMU=n and wire it up as a cond syscall for the platforms that support both. Signed-off-by: Paul Mundt <[EMAIL PROTECTED]> -- fs/splice.c | 2 ++ kernel/sys_ni.c | 1 + 2 files changed, 3 insertions(+) --- linux-2.6.23-rc4-mm1.orig/fs/splice.c 2007-09-11 15:15:54.000000000 +0900 +++ linux-2.6.23-rc4-mm1/fs/splice.c 2007-09-11 17:11:02.000000000 +0900 @@ -1180,6 +1180,7 @@ return -EINVAL; } +#ifdef CONFIG_MMU /* * Undo vmsplice_to_user map. Basically just lookup the vmas and * detach/unmap/remove them. @@ -1686,6 +1687,7 @@ return error; } +#endif /* CONFIG_MMU */ asmlinkage long sys_splice(int fd_in, loff_t __user *off_in, int fd_out, loff_t __user *off_out, --- linux-2.6.23-rc4-mm1.orig/kernel/sys_ni.c 2007-09-11 15:15:56.000000000 +0900 +++ linux-2.6.23-rc4-mm1/kernel/sys_ni.c 2007-09-11 17:09:24.000000000 +0900 @@ -139,6 +139,7 @@ cond_syscall(sys_madvise); cond_syscall(sys_mremap); cond_syscall(sys_remap_file_pages); +cond_syscall(sys_vmsplice); cond_syscall(compat_sys_move_pages); cond_syscall(compat_sys_migrate_pages); - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/