I built using module-assistant and the Ubuntu 8.04 version of aufs, as packaged by Julian Andres Klode. It builds fine without the patch. With the patch, compile fails on the BUILD_BUG_ON line. This is on x86_64 architecture.
# m-a -k /usr/src/linux-headers-2.6.24-16-server -l 2.6.24-16-server a-i aufs Here's the compile error. /usr/src/modules/aufs/i_op_ren.c: In function ‘aufs_rename’: /usr/src/modules/aufs/i_op_ren.c:498: error: size of array ‘type name’ is negative Here's the code that doesn't compile. int aufs_rename(struct inode *src_dir, struct dentry *src_dentry, struct inode *dir, struct dentry *dentry) { int err, do_dt_dstdir, flags; aufs_bindex_t bend, bindex; struct inode *inode[2], *dirs[2]; struct aufs_hinode *hgdir[2]; enum { PARENT, CHILD }; /* reduce stack space */ struct { struct rename_args a; struct au_dtime dt[2][2]; } *p; struct au_wr_dir_args wr_dir_args = { //.force_btgt = -1, .add_entry = 1, .do_lock_srcdir = 0, //.isdir = 0 }; LKTRTrace("i%lu, %.*s, i%lu, %.*s\n", src_dir->i_ino, AuDLNPair(src_dentry), dir->i_ino, AuDLNPair(dentry)); IMustLock(src_dir); IMustLock(dir); inode[DST] = dentry->d_inode; if (inode[DST]) { IMustLock(inode[DST]); igrab(inode[DST]); } err = -ENOMEM; BUILD_BUG_ON(sizeof(*p) > PAGE_SIZE); ------------------------------------------------------------------------------