Michael Cerrato:
> I get a kernel oops in inode_permission:
it is unionfs bug.
the parameter 'nd' may be null.
--- inode.c 5 Feb 2006 06:21:15 -0000 1.1
+++ inode.c 7 Feb 2006 17:01:40 -0000
@@ -838,7 +838,7 @@ static int inode_permission(struct inode
retval = inode->i_op->permission(inode, submask, nd);
if ((retval == -EACCES) && (submask & MAY_WRITE) &&
(!strcmp("nfs", (inode)->i_sb->s_type->name)) &&
- (branchperms(nd->mnt->mnt_sb, bindex) & MAY_NFSRO)) {
+ (branchperms(inode->i_sb, bindex) & MAY_NFSRO)) {
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,10)
retval = vfs_permission(inode, submask);
#else
> My goal is to have diskless machines NFS mount a read-only root and a
> read-write /.snapshot, and then unionfs the two for /etc and a few
> subdirectories of /var. (Exporting a unionfs from the NFS server is
> not an option in this case.) Using "nfsro" on the bottom file system
> doesn't change things.
very similar to my goal.
Junjiro Okajima
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