Add in my fix for 2.4.x kernels so /proc/mounts will not have useless

deg entries which break mount, df, and friends.  Renamed WillThisGoIntoTheKernel
to avoid any confision.
 -Erik

2 files changed, 66 insertions, 0 deletions

diff --git a/examples/kernel-patches/2.4.x_mount_patch b/examples/kernel-patches/2.4.x_mount_patch
new file mode 100644
index 000000000..91f5262c1
--- /dev/null
+++ b/examples/kernel-patches/2.4.x_mount_patch
@@ -0,0 +1,66 @@
+On Sat Jul 01, 2000 at 12:04:36PM -0400, Alexander Viro wrote:
+> 
+> Try to trace the path from their roots to absolute root(s)... They simply
+> should not be in the output - that's a debugging stuff and I have no
+> problems with removing it from /proc/mounts. No heuristics needed - we
+> can pass NULL as dev_name in kern_mount() and check for NULL ->mnt_devname
+> in get_filesystem_info(). I'll do that as soon as threading patches will
+> be over (hopefully RSN - they went to Linus).
+> 
+
+Ok, cool.  So something like then?  I kept in the filter for FS_NOMOUNT
+filesystems, as I assume those should never show up in /proc/mounts, and added
+that filter to the /proc/filesystems listing as well.
+
+ -Erik
+
+--
+Erik B. Andersen   Web:    http://www.xmission.com/~andersen/ 
+                   email:  andersee@debian.org
+--This message was written using 73% post-consumer electrons--
+
+
+--- fs/super.c.virgin	Wed Jun 28 22:42:35 2000
++++ fs/super.c	Mon Jul  3 12:07:07 2000
+@@ -251,6 +251,10 @@ int get_filesystem_list(char * buf)
+ 	read_lock(&file_systems_lock);
+ 	tmp = file_systems;
+ 	while (tmp && len < PAGE_SIZE - 80) {
++		/* Filter out any filesystems that are marked as FS_NOMOUNT.
++		 * User space doesn't need to know or care about them */
++		if (tmp->fs_flags & FS_NOMOUNT)
++		    continue;
+ 		len += sprintf(buf+len, "%s\t%s\n",
+ 			(tmp->fs_flags & FS_REQUIRES_DEV) ? "" : "nodev",
+ 			tmp->name);
+@@ -443,6 +447,16 @@ int get_filesystem_info( char *buf )
+ 		path = d_path(tmp->mnt_root, tmp, buffer, PAGE_SIZE);
+ 		if (!path)
+ 			continue;
++		/* Filter out any filesystems that are marked as FS_NOMOUNT.
++		 * User space doesn't need to know or care about them */
++		if (tmp->mnt_sb->s_type->fs_flags & FS_NOMOUNT)
++		    continue;
++		/* kern_mount() allows the kernel to mount internal-use-only
++		 * filesystems, and marks then with ->mnt_devname==NULL, so
++		 * filter out those here */
++		if (tmp->mnt_devname == NULL)
++		    continue;
++
+ 		len += sprintf( buf + len, "%s %s %s %s",
+ 			tmp->mnt_devname, path,
+ 			tmp->mnt_sb->s_type->name,
+@@ -895,7 +909,7 @@ struct vfsmount *kern_mount(struct file_
+ 		put_unnamed_dev(dev);
+ 		return ERR_PTR(-EINVAL);
+ 	}
+-	mnt = add_vfsmnt(sb, sb->s_root, sb->s_root, NULL, "none", type->name);
++	mnt = add_vfsmnt(sb, sb->s_root, sb->s_root, NULL, NULL, type->name);
+ 	if (!mnt) {
+ 		kill_super(sb, 0);
+ 		return ERR_PTR(-ENOMEM);
+
+-
+To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
+the body of a message to majordomo@vger.rutgers.edu
+Please read the FAQ at http://www.tux.org/lkml/
diff --git a/examples/kernel-patches/WillThisGoIntoTheKernel b/examples/kernel-patches/Will_devps_GoIntoTheKernel
index 33ee8b47e..33ee8b47e 100644
--- a/examples/kernel-patches/WillThisGoIntoTheKernel
+++ b/examples/kernel-patches/Will_devps_GoIntoTheKernel