v2.5.0 -> v2.5.0.1

- me: README references to 2.4.x -> 2.5.x
- Alexander Viro: fix unmount inode breakage, show_vfsmnt cleanup
- Jeff Garzik: fix 8139too initialization

Makefile

 VERSION = 2
 PATCHLEVEL = 5
-SUBLEVEL = 0
-EXTRAVERSION =
+SUBLEVEL = 1
+EXTRAVERSION =-pre1
 
 KERNELRELEASE=$(VERSION).$(PATCHLEVEL).$(SUBLEVEL)$(EXTRAVERSION)
 

README

-	Linux kernel release 2.4.xx
+	Linux kernel release 2.5.xx
 
-These are the release notes for Linux version 2.4.  Read them carefully,
+These are the release notes for Linux version 2.5.  Read them carefully,
 as they tell you what this is all about, explain how to install the
 kernel, and what to do if something goes wrong. 
 
+NOTE! As with all odd-numbered releases, 2.5.x is a development kernel. 
+For stable kernels, see the 2.4.x maintained by Marcelo Tosatti.
+
 WHAT IS LINUX?
 
   Linux is a Unix clone written from scratch by Linus Torvalds with
@@ -52,7 +55,7 @@ INSTALLING the kernel:
    directory where you have permissions (eg. your home directory) and
    unpack it:
 
-		gzip -cd linux-2.4.XX.tar.gz | tar xvf -
+		gzip -cd linux-2.5.XX.tar.gz | tar xvf -
 
    Replace "XX" with the version number of the latest kernel.
 
@@ -61,7 +64,7 @@ INSTALLING the kernel:
    files.  They should match the library, and not get messed up by
    whatever the kernel-du-jour happens to be.
 
- - You can also upgrade between 2.4.xx releases by patching.  Patches are
+ - You can also upgrade between 2.5.xx releases by patching.  Patches are
    distributed in the traditional gzip and the new bzip2 format.  To
    install by patching, get all the newer patch files, enter the
    directory in which you unpacked the kernel source and execute:
@@ -96,7 +99,7 @@ INSTALLING the kernel:
 
 SOFTWARE REQUIREMENTS
 
-   Compiling and running the 2.4.xx kernels requires up-to-date
+   Compiling and running the 2.5.xx kernels requires up-to-date
    versions of various software packages.  Consult
    ./Documentation/Changes for the minimum version numbers required
    and how to get updates for these packages.  Beware that using

drivers/net/8139too.c

@@ -1270,6 +1270,7 @@ static int rtl8139_open (struct net_device *dev)
 	tp->full_duplex = tp->duplex_lock;
 	tp->tx_flag = (TX_FIFO_THRESH << 11) & 0x003f0000;
 	tp->twistie = 1;
+	tp->time_to_die = 0;
 
 	rtl8139_init_ring (dev);
 	rtl8139_hw_start (dev);

fs/inode.c

@@ -1065,24 +1065,27 @@ void iput(struct inode *inode)
 			if (inode->i_state != I_CLEAR)
 				BUG();
 		} else {
-			if (!list_empty(&inode->i_hash) && sb && sb->s_root) {
+			if (!list_empty(&inode->i_hash)) {
 				if (!(inode->i_state & (I_DIRTY|I_LOCK))) {
 					list_del(&inode->i_list);
 					list_add(&inode->i_list, &inode_unused);
 				}
 				inodes_stat.nr_unused++;
 				spin_unlock(&inode_lock);
-				return;
-			} else {
-				list_del_init(&inode->i_list);
+				if (!sb || sb->s_flags & MS_ACTIVE)
+					return;
+				write_inode_now(inode, 1);
+				spin_lock(&inode_lock);
+				inodes_stat.nr_unused--;
 				list_del_init(&inode->i_hash);
-				inode->i_state|=I_FREEING;
-				inodes_stat.nr_inodes--;
-				spin_unlock(&inode_lock);
-				if (inode->i_data.nrpages)
-					truncate_inode_pages(&inode->i_data, 0);
-				clear_inode(inode);
 			}
+			list_del_init(&inode->i_list);
+			inode->i_state|=I_FREEING;
+			inodes_stat.nr_inodes--;
+			spin_unlock(&inode_lock);
+			if (inode->i_data.nrpages)
+				truncate_inode_pages(&inode->i_data, 0);
+			clear_inode(inode);
 		}
 		destroy_inode(inode);
 	}

fs/super.c

@@ -462,6 +462,7 @@ static struct super_block * read_super(kdev_t dev, struct block_device *bdev,
 	lock_super(s);
 	if (!type->read_super(s, data, flags & MS_VERBOSE ? 1 : 0))
 		goto out_fail;
+	s->s_flags |= MS_ACTIVE;
 	unlock_super(s);
 	/* tell bdcache that we are going to keep this one */
 	if (bdev)
@@ -614,6 +615,7 @@ static struct super_block *get_sb_bdev(struct file_system_type *fs_type,
 	lock_super(s);
 	if (!fs_type->read_super(s, data, flags & MS_VERBOSE ? 1 : 0))
 		goto out_fail;
+	s->s_flags |= MS_ACTIVE;
 	unlock_super(s);
 	get_filesystem(fs_type);
 	path_release(&nd);
@@ -695,6 +697,7 @@ static struct super_block *get_sb_single(struct file_system_type *fs_type,
 		lock_super(s);
 		if (!fs_type->read_super(s, data, flags & MS_VERBOSE ? 1 : 0))
 			goto out_fail;
+		s->s_flags |= MS_ACTIVE;
 		unlock_super(s);
 		get_filesystem(fs_type);
 		return s;
@@ -739,6 +742,7 @@ void kill_super(struct super_block *sb)
 	dput(root);
 	fsync_super(sb);
 	lock_super(sb);
+	sb->s_flags &= ~MS_ACTIVE;
 	invalidate_inodes(sb);	/* bad name - it should be evict_inodes() */
 	if (sop) {
 		if (sop->write_super && sb->s_dirt)

include/linux/fs.h

@@ -110,6 +110,7 @@ extern int leases_enable, dir_notify_enable, lease_break_time;
 #define MS_BIND		4096
 #define MS_REC		16384
 #define MS_VERBOSE	32768
+#define MS_ACTIVE	(1<<30)
 #define MS_NOUSER	(1<<31)
 
 /*