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From: Arnd Bergmann <arnd@arndb.de>
To: linux-kernel@vger.kernel.org
Cc: Arnd Bergmann <arnd@arndb.de>,
	Greg Kroah-Hartman <gregkh@suse.de>,
	"H. Peter Anvin" <hpa@zytor.com>, Ian Kent <raven@themaw.net>,
	autofs@linux.kernel.org
Subject: [PATCH 06/20] staging: Remove autofs3
Date: Tue, 25 Jan 2011 23:17:20 +0100	[thread overview]
Message-ID: <1295993854-4971-7-git-send-email-arnd@arndb.de> (raw)
In-Reply-To: <1295993854-4971-1-git-send-email-arnd@arndb.de>

autofs3 was moved to staging in 2.6.37, so we can
remove it in the 2.6.39 merge window. If we have
a reason to bring it back after that, this patch
can get reverted.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: Greg Kroah-Hartman <gregkh@suse.de>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Ian Kent <raven@themaw.net>
Cc: autofs@linux.kernel.org
---
 MAINTAINERS                       |    6 -
 drivers/staging/Kconfig           |    2 -
 drivers/staging/Makefile          |    1 -
 drivers/staging/autofs/Kconfig    |   22 --
 drivers/staging/autofs/Makefile   |    7 -
 drivers/staging/autofs/TODO       |    8 -
 drivers/staging/autofs/autofs_i.h |  165 ----------
 drivers/staging/autofs/dirhash.c  |  260 ---------------
 drivers/staging/autofs/init.c     |   52 ---
 drivers/staging/autofs/inode.c    |  288 ----------------
 drivers/staging/autofs/root.c     |  648 -------------------------------------
 drivers/staging/autofs/symlink.c  |   26 --
 drivers/staging/autofs/waitq.c    |  205 ------------
 13 files changed, 0 insertions(+), 1690 deletions(-)
 delete mode 100644 drivers/staging/autofs/Kconfig
 delete mode 100644 drivers/staging/autofs/Makefile
 delete mode 100644 drivers/staging/autofs/TODO
 delete mode 100644 drivers/staging/autofs/autofs_i.h
 delete mode 100644 drivers/staging/autofs/dirhash.c
 delete mode 100644 drivers/staging/autofs/init.c
 delete mode 100644 drivers/staging/autofs/inode.c
 delete mode 100644 drivers/staging/autofs/root.c
 delete mode 100644 drivers/staging/autofs/symlink.c
 delete mode 100644 drivers/staging/autofs/waitq.c

diff --git a/MAINTAINERS b/MAINTAINERS
index 55592f8..246ee22 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -3563,12 +3563,6 @@ W:	http://lse.sourceforge.net/kdump/
 S:	Maintained
 F:	Documentation/kdump/
 
-KERNEL AUTOMOUNTER (AUTOFS)
-M:	"H. Peter Anvin" <hpa@zytor.com>
-L:	autofs@linux.kernel.org
-S:	Obsolete
-F:	drivers/staging/autofs/
-
 KERNEL AUTOMOUNTER v4 (AUTOFS4)
 M:	Ian Kent <raven@themaw.net>
 L:	autofs@linux.kernel.org
diff --git a/drivers/staging/Kconfig b/drivers/staging/Kconfig
index 5c8fcfc..3957b2f 100644
--- a/drivers/staging/Kconfig
+++ b/drivers/staging/Kconfig
@@ -91,8 +91,6 @@ source "drivers/staging/frontier/Kconfig"
 
 source "drivers/staging/pohmelfs/Kconfig"
 
-source "drivers/staging/autofs/Kconfig"
-
 source "drivers/staging/phison/Kconfig"
 
 source "drivers/staging/line6/Kconfig"
diff --git a/drivers/staging/Makefile b/drivers/staging/Makefile
index d538863..cbe013e 100644
--- a/drivers/staging/Makefile
+++ b/drivers/staging/Makefile
@@ -30,7 +30,6 @@ obj-$(CONFIG_R8712U)		+= rtl8712/
 obj-$(CONFIG_SPECTRA)		+= spectra/
 obj-$(CONFIG_TRANZPORT)		+= frontier/
 obj-$(CONFIG_POHMELFS)		+= pohmelfs/
-obj-$(CONFIG_AUTOFS_FS)		+= autofs/
 obj-$(CONFIG_IDE_PHISON)	+= phison/
 obj-$(CONFIG_LINE6_USB)		+= line6/
 obj-$(CONFIG_USB_SERIAL_QUATECH2)	+= serqt_usb2/
diff --git a/drivers/staging/autofs/Kconfig b/drivers/staging/autofs/Kconfig
deleted file mode 100644
index 480e210..0000000
--- a/drivers/staging/autofs/Kconfig
+++ /dev/null
@@ -1,22 +0,0 @@
-config AUTOFS_FS
-	tristate "Kernel automounter support"
-	depends on BKL # unfixable, just use autofs4
-	help
-	  The automounter is a tool to automatically mount remote file systems
-	  on demand. This implementation is partially kernel-based to reduce
-	  overhead in the already-mounted case; this is unlike the BSD
-	  automounter (amd), which is a pure user space daemon.
-
-	  To use the automounter you need the user-space tools from the autofs
-	  package; you can find the location in <file:Documentation/Changes>.
-	  You also want to answer Y to "NFS file system support", below.
-
-	  If you want to use the newer version of the automounter with more
-	  features, say N here and say Y to "Kernel automounter v4 support",
-	  below.
-
-	  To compile this support as a module, choose M here: the module will be
-	  called autofs.
-
-	  If you are not a part of a fairly large, distributed network, you
-	  probably do not need an automounter, and can say N here.
diff --git a/drivers/staging/autofs/Makefile b/drivers/staging/autofs/Makefile
deleted file mode 100644
index f48781c..0000000
--- a/drivers/staging/autofs/Makefile
+++ /dev/null
@@ -1,7 +0,0 @@
-#
-# Makefile for the linux autofs-filesystem routines.
-#
-
-obj-$(CONFIG_AUTOFS_FS) += autofs.o
-
-autofs-y := dirhash.o init.o inode.o root.o symlink.o waitq.o
diff --git a/drivers/staging/autofs/TODO b/drivers/staging/autofs/TODO
deleted file mode 100644
index 543803d..0000000
--- a/drivers/staging/autofs/TODO
+++ /dev/null
@@ -1,8 +0,0 @@
-autofs version 3 is on its way out of the kernel,
-It has been replaced by autofs4 several years ago.
-
-The autofs3 code uses the big kernel lock which
-is getting deprecated.
-
-Users that find autofs3 to work but not autofs4
-should talk to Ian Kent <raven@themaw.net>.
diff --git a/drivers/staging/autofs/autofs_i.h b/drivers/staging/autofs/autofs_i.h
deleted file mode 100644
index 647a143..0000000
--- a/drivers/staging/autofs/autofs_i.h
+++ /dev/null
@@ -1,165 +0,0 @@
-/* -*- linux-c -*- ------------------------------------------------------- *
- *   
- * drivers/staging/autofs/autofs_i.h
- *
- *   Copyright 1997-1998 Transmeta Corporation - All Rights Reserved
- *
- * This file is part of the Linux kernel and is made available under
- * the terms of the GNU General Public License, version 2, or at your
- * option, any later version, incorporated herein by reference.
- *
- * ----------------------------------------------------------------------- */
-
-/* Internal header file for autofs */
-
-#include <linux/auto_fs.h>
-
-/* This is the range of ioctl() numbers we claim as ours */
-#define AUTOFS_IOC_FIRST     AUTOFS_IOC_READY
-#define AUTOFS_IOC_COUNT     32
-
-#include <linux/kernel.h>
-#include <linux/slab.h>
-#include <linux/time.h>
-#include <linux/string.h>
-#include <linux/wait.h>
-#include <linux/dcache.h>
-#include <linux/namei.h>
-#include <linux/mount.h>
-#include <linux/sched.h>
-
-#include <asm/current.h>
-#include <asm/uaccess.h>
-
-#ifdef DEBUG
-#define DPRINTK(D) (printk D)
-#else
-#define DPRINTK(D) ((void)0)
-#endif
-
-/*
- * If the daemon returns a negative response (AUTOFS_IOC_FAIL) then the
- * kernel will keep the negative response cached for up to the time given
- * here, although the time can be shorter if the kernel throws the dcache
- * entry away.  This probably should be settable from user space.
- */
-#define AUTOFS_NEGATIVE_TIMEOUT (60*HZ)	/* 1 minute */
-
-/* Structures associated with the root directory hash table */
-
-#define AUTOFS_HASH_SIZE 67
-
-struct autofs_dir_ent {
-	int hash;
-	char *name;
-	int len;
-	ino_t ino;
-	struct dentry *dentry;
-	/* Linked list of entries */
-	struct autofs_dir_ent *next;
-	struct autofs_dir_ent **back;
-	/* The following entries are for the expiry system */
-	unsigned long last_usage;
-	struct list_head exp;
-};
-
-struct autofs_dirhash {
-	struct autofs_dir_ent *h[AUTOFS_HASH_SIZE];
-	struct list_head expiry_head;
-};
-
-struct autofs_wait_queue {
-	wait_queue_head_t queue;
-	struct autofs_wait_queue *next;
-	autofs_wqt_t wait_queue_token;
-	/* We use the following to see what we are waiting for */
-	int hash;
-	int len;
-	char *name;
-	/* This is for status reporting upon return */
-	int status;
-	int wait_ctr;
-};
-
-struct autofs_symlink {
-	char *data;
-	int len;
-	time_t mtime;
-};
-
-#define AUTOFS_MAX_SYMLINKS 256
-
-#define AUTOFS_ROOT_INO      1
-#define AUTOFS_FIRST_SYMLINK 2
-#define AUTOFS_FIRST_DIR_INO (AUTOFS_FIRST_SYMLINK+AUTOFS_MAX_SYMLINKS)
-
-#define AUTOFS_SYMLINK_BITMAP_LEN \
-	((AUTOFS_MAX_SYMLINKS+((sizeof(long)*1)-1))/(sizeof(long)*8))
-
-#define AUTOFS_SBI_MAGIC 0x6d4a556d
-
-struct autofs_sb_info {
-	u32 magic;
-	struct file *pipe;
-	struct pid *oz_pgrp;
-	int catatonic;
-	struct super_block *sb;
-	unsigned long exp_timeout;
-	ino_t next_dir_ino;
-	struct autofs_wait_queue *queues; /* Wait queue pointer */
-	struct autofs_dirhash dirhash; /* Root directory hash */
-	struct autofs_symlink symlink[AUTOFS_MAX_SYMLINKS];
-	unsigned long symlink_bitmap[AUTOFS_SYMLINK_BITMAP_LEN];
-};
-
-static inline struct autofs_sb_info *autofs_sbi(struct super_block *sb)
-{
-	return (struct autofs_sb_info *)(sb->s_fs_info);
-}
-
-/* autofs_oz_mode(): do we see the man behind the curtain?  (The
-   processes which do manipulations for us in user space sees the raw
-   filesystem without "magic".) */
-
-static inline int autofs_oz_mode(struct autofs_sb_info *sbi) {
-	return sbi->catatonic || task_pgrp(current) == sbi->oz_pgrp;
-}
-
-/* Hash operations */
-
-void autofs_initialize_hash(struct autofs_dirhash *);
-struct autofs_dir_ent *autofs_hash_lookup(const struct autofs_dirhash *,struct qstr *);
-void autofs_hash_insert(struct autofs_dirhash *,struct autofs_dir_ent *);
-void autofs_hash_delete(struct autofs_dir_ent *);
-struct autofs_dir_ent *autofs_hash_enum(const struct autofs_dirhash *,off_t *,struct autofs_dir_ent *);
-void autofs_hash_dputall(struct autofs_dirhash *);
-void autofs_hash_nuke(struct autofs_sb_info *);
-
-/* Expiration-handling functions */
-
-void autofs_update_usage(struct autofs_dirhash *,struct autofs_dir_ent *);
-struct autofs_dir_ent *autofs_expire(struct super_block *,struct autofs_sb_info *, struct vfsmount *mnt);
-
-/* Operations structures */
-
-extern const struct inode_operations autofs_root_inode_operations;
-extern const struct inode_operations autofs_symlink_inode_operations;
-extern const struct file_operations autofs_root_operations;
-
-/* Initializing function */
-
-int autofs_fill_super(struct super_block *, void *, int);
-void autofs_kill_sb(struct super_block *sb);
-struct inode *autofs_iget(struct super_block *, unsigned long);
-
-/* Queue management functions */
-
-int autofs_wait(struct autofs_sb_info *,struct qstr *);
-int autofs_wait_release(struct autofs_sb_info *,autofs_wqt_t,int);
-void autofs_catatonic_mode(struct autofs_sb_info *);
-
-#ifdef DEBUG
-void autofs_say(const char *name, int len);
-#else
-#define autofs_say(n,l) ((void)0)
-#endif
diff --git a/drivers/staging/autofs/dirhash.c b/drivers/staging/autofs/dirhash.c
deleted file mode 100644
index a08bd73..0000000
--- a/drivers/staging/autofs/dirhash.c
+++ /dev/null
@@ -1,260 +0,0 @@
-/* -*- linux-c -*- --------------------------------------------------------- *
- *
- * drivers/staging/autofs/dirhash.c
- *
- *  Copyright 1997-1998 Transmeta Corporation -- All Rights Reserved
- *
- * This file is part of the Linux kernel and is made available under
- * the terms of the GNU General Public License, version 2, or at your
- * option, any later version, incorporated herein by reference.
- *
- * ------------------------------------------------------------------------- */
-
-#include "autofs_i.h"
-
-/* Functions for maintenance of expiry queue */
-
-static void autofs_init_usage(struct autofs_dirhash *dh,
-			      struct autofs_dir_ent *ent)
-{
-	list_add_tail(&ent->exp, &dh->expiry_head);
-	ent->last_usage = jiffies;
-}
-
-static void autofs_delete_usage(struct autofs_dir_ent *ent)
-{
-	list_del(&ent->exp);
-}
-
-void autofs_update_usage(struct autofs_dirhash *dh,
-			 struct autofs_dir_ent *ent)
-{
-	autofs_delete_usage(ent);   /* Unlink from current position */
-	autofs_init_usage(dh, ent);  /* Relink at queue tail */
-}
-
-struct autofs_dir_ent *autofs_expire(struct super_block *sb,
-				     struct autofs_sb_info *sbi,
-				     struct vfsmount *mnt)
-{
-	struct autofs_dirhash *dh = &sbi->dirhash;
-	struct autofs_dir_ent *ent;
-	unsigned long timeout = sbi->exp_timeout;
-
-	while (1) {
-		struct path path;
-		int umount_ok;
-
-		if (list_empty(&dh->expiry_head) || sbi->catatonic)
-			return NULL;	/* No entries */
-		/* We keep the list sorted by last_usage and want old stuff */
-		ent = list_entry(dh->expiry_head.next,
-						struct autofs_dir_ent, exp);
-		if (jiffies - ent->last_usage < timeout)
-			break;
-		/* Move to end of list in case expiry isn't desirable */
-		autofs_update_usage(dh, ent);
-
-		/* Check to see that entry is expirable */
-		if (ent->ino < AUTOFS_FIRST_DIR_INO)
-			return ent; /* Symlinks are always expirable */
-
-		/* Get the dentry for the autofs subdirectory */
-		path.dentry = ent->dentry;
-
-		if (!path.dentry) {
-			/* Should only happen in catatonic mode */
-			printk(KERN_DEBUG "autofs: dentry == NULL but inode \
-				range is directory, entry %s\n", ent->name);
-			autofs_delete_usage(ent);
-			continue;
-		}
-
-		if (!path.dentry->d_inode) {
-			dput(path.dentry);
-			printk(KERN_DEBUG "autofs: negative dentry on expiry queue: %s\n",
-			       ent->name);
-			autofs_delete_usage(ent);
-			continue;
-		}
-
-		/* Make sure entry is mounted and unused; note that dentry will
-		   point to the mounted-on-top root. */
-		if (!S_ISDIR(path.dentry->d_inode->i_mode) ||
-		    !d_mountpoint(path.dentry)) {
-			DPRINTK(("autofs: not expirable \
-				(not a mounted directory): %s\n", ent->name));
-			continue;
-		}
-		path.mnt = mnt;
-		path_get(&path);
-		if (!follow_down_one(&path)) {
-			path_put(&path);
-			DPRINTK(("autofs: not expirable\
-			(not a mounted directory): %s\n", ent->name));
-			continue;
-		}
-		follow_down(&path, false);  // TODO: need to check error
-		umount_ok = may_umount(path.mnt);
-		path_put(&path);
-
-		if (umount_ok) {
-			DPRINTK(("autofs: signaling expire on %s\n",
-								ent->name));
-			return ent; /* Expirable! */
-		}
-
-		DPRINTK(("autofs: didn't expire due to may_umount: %s\n",
-								ent->name));
-	}
-	return NULL;		/* No expirable entries */
-}
-
-void autofs_initialize_hash(struct autofs_dirhash *dh)
-{
-	memset(&dh->h, 0, AUTOFS_HASH_SIZE*sizeof(struct autofs_dir_ent *));
-	INIT_LIST_HEAD(&dh->expiry_head);
-}
-
-struct autofs_dir_ent *autofs_hash_lookup(const struct autofs_dirhash *dh,
-						struct qstr *name)
-{
-	struct autofs_dir_ent *dhn;
-
-	DPRINTK(("autofs_hash_lookup: hash = 0x%08x, name = ", name->hash));
-	autofs_say(name->name, name->len);
-
-	for (dhn = dh->h[(unsigned) name->hash % AUTOFS_HASH_SIZE];
-		dhn;
-		dhn = dhn->next) {
-		if (name->hash == dhn->hash &&
-		     name->len == dhn->len &&
-		     !memcmp(name->name, dhn->name, name->len))
-			break;
-	}
-
-	return dhn;
-}
-
-void autofs_hash_insert(struct autofs_dirhash *dh, struct autofs_dir_ent *ent)
-{
-	struct autofs_dir_ent **dhnp;
-
-	DPRINTK(("autofs_hash_insert: hash = 0x%08x, name = ", ent->hash));
-	autofs_say(ent->name, ent->len);
-
-	autofs_init_usage(dh, ent);
-	if (ent->dentry)
-		dget(ent->dentry);
-
-	dhnp = &dh->h[(unsigned) ent->hash % AUTOFS_HASH_SIZE];
-	ent->next = *dhnp;
-	ent->back = dhnp;
-	*dhnp = ent;
-	if (ent->next)
-		ent->next->back = &(ent->next);
-}
-
-void autofs_hash_delete(struct autofs_dir_ent *ent)
-{
-	*(ent->back) = ent->next;
-	if (ent->next)
-		ent->next->back = ent->back;
-
-	autofs_delete_usage(ent);
-
-	if (ent->dentry)
-		dput(ent->dentry);
-	kfree(ent->name);
-	kfree(ent);
-}
-
-/*
- * Used by readdir().  We must validate "ptr", so we can't simply make it
- * a pointer.  Values below 0xffff are reserved; calling with any value
- * <= 0x10000 will return the first entry found.
- *
- * "last" can be NULL or the value returned by the last search *if* we
- * want the next sequential entry.
- */
-struct autofs_dir_ent *autofs_hash_enum(const struct autofs_dirhash *dh,
-					off_t *ptr, struct autofs_dir_ent *last)
-{
-	int bucket, ecount, i;
-	struct autofs_dir_ent *ent;
-
-	bucket = (*ptr >> 16) - 1;
-	ecount = *ptr & 0xffff;
-
-	if (bucket < 0)
-		bucket = ecount = 0;
-
-	DPRINTK(("autofs_hash_enum: bucket %d, entry %d\n", bucket, ecount));
-
-	ent = last ? last->next : NULL;
-
-	if (ent) {
-		ecount++;
-	} else {
-		while  (bucket < AUTOFS_HASH_SIZE) {
-			ent = dh->h[bucket];
-			for (i = ecount ; ent && i ; i--)
-				ent = ent->next;
-
-			if (ent) {
-				ecount++; /* Point to *next* entry */
-				break;
-			}
-
-			bucket++; ecount = 0;
-		}
-	}
-
-#ifdef DEBUG
-	if (!ent)
-		printk(KERN_DEBUG "autofs_hash_enum: nothing found\n");
-	else {
-		printk(KERN_DEBUG "autofs_hash_enum: found hash %08x, name",
-								ent->hash);
-		autofs_say(ent->name, ent->len);
-	}
-#endif
-
-	*ptr = ((bucket+1) << 16) + ecount;
-	return ent;
-}
-
-/* Iterate over all the ents, and remove all dentry pointers.  Used on
-   entering catatonic mode, in order to make the filesystem unmountable. */
-void autofs_hash_dputall(struct autofs_dirhash *dh)
-{
-	int i;
-	struct autofs_dir_ent *ent;
-
-	for (i = 0 ; i < AUTOFS_HASH_SIZE ; i++) {
-		for (ent = dh->h[i] ; ent ; ent = ent->next) {
-			if (ent->dentry) {
-				dput(ent->dentry);
-				ent->dentry = NULL;
-			}
-		}
-	}
-}
-
-/* Delete everything.  This is used on filesystem destruction, so we
-   make no attempt to keep the pointers valid */
-void autofs_hash_nuke(struct autofs_sb_info *sbi)
-{
-	int i;
-	struct autofs_dir_ent *ent, *nent;
-
-	for (i = 0 ; i < AUTOFS_HASH_SIZE ; i++) {
-		for (ent = sbi->dirhash.h[i] ; ent ; ent = nent) {
-			nent = ent->next;
-			if (ent->dentry)
-				dput(ent->dentry);
-			kfree(ent->name);
-			kfree(ent);
-		}
-	}
-}
diff --git a/drivers/staging/autofs/init.c b/drivers/staging/autofs/init.c
deleted file mode 100644
index 5e4b372..0000000
--- a/drivers/staging/autofs/init.c
+++ /dev/null
@@ -1,52 +0,0 @@
-/* -*- linux-c -*- --------------------------------------------------------- *
- *
- * drivers/staging/autofs/init.c
- *
- *  Copyright 1997-1998 Transmeta Corporation -- All Rights Reserved
- *
- * This file is part of the Linux kernel and is made available under
- * the terms of the GNU General Public License, version 2, or at your
- * option, any later version, incorporated herein by reference.
- *
- * ------------------------------------------------------------------------- */
-
-#include <linux/module.h>
-#include <linux/init.h>
-#include "autofs_i.h"
-
-static struct dentry *autofs_mount(struct file_system_type *fs_type,
-	int flags, const char *dev_name, void *data)
-{
-	return mount_nodev(fs_type, flags, data, autofs_fill_super);
-}
-
-static struct file_system_type autofs_fs_type = {
-	.owner		= THIS_MODULE,
-	.name		= "autofs",
-	.mount		= autofs_mount,
-	.kill_sb	= autofs_kill_sb,
-};
-
-static int __init init_autofs_fs(void)
-{
-	return register_filesystem(&autofs_fs_type);
-}
-
-static void __exit exit_autofs_fs(void)
-{
-	unregister_filesystem(&autofs_fs_type);
-}
-
-module_init(init_autofs_fs);
-module_exit(exit_autofs_fs);
-
-#ifdef DEBUG
-void autofs_say(const char *name, int len)
-{
-	printk("(%d: ", len);
-	while ( len-- )
-		printk("%c", *name++);
-	printk(")\n");
-}
-#endif
-MODULE_LICENSE("GPL");
diff --git a/drivers/staging/autofs/inode.c b/drivers/staging/autofs/inode.c
deleted file mode 100644
index 74db190..0000000
--- a/drivers/staging/autofs/inode.c
+++ /dev/null
@@ -1,288 +0,0 @@
-/* -*- linux-c -*- --------------------------------------------------------- *
- *
- * drivers/staging/autofs/inode.c
- *
- *  Copyright 1997-1998 Transmeta Corporation -- All Rights Reserved
- *
- * This file is part of the Linux kernel and is made available under
- * the terms of the GNU General Public License, version 2, or at your
- * option, any later version, incorporated herein by reference.
- *
- * ------------------------------------------------------------------------- */
-
-#include <linux/kernel.h>
-#include <linux/mm.h>
-#include <linux/slab.h>
-#include <linux/file.h>
-#include <linux/parser.h>
-#include <linux/bitops.h>
-#include <linux/magic.h>
-#include "autofs_i.h"
-#include <linux/module.h>
-
-void autofs_kill_sb(struct super_block *sb)
-{
-	struct autofs_sb_info *sbi = autofs_sbi(sb);
-	unsigned int n;
-
-	/*
-	 * In the event of a failure in get_sb_nodev the superblock
-	 * info is not present so nothing else has been setup, so
-	 * just call kill_anon_super when we are called from
-	 * deactivate_super.
-	 */
-	if (!sbi)
-		goto out_kill_sb;
-
-	if (!sbi->catatonic)
-		autofs_catatonic_mode(sbi); /* Free wait queues, close pipe */
-
-	put_pid(sbi->oz_pgrp);
-
-	autofs_hash_nuke(sbi);
-	for (n = 0; n < AUTOFS_MAX_SYMLINKS; n++) {
-		if (test_bit(n, sbi->symlink_bitmap))
-			kfree(sbi->symlink[n].data);
-	}
-
-	kfree(sb->s_fs_info);
-
-out_kill_sb:
-	DPRINTK(("autofs: shutting down\n"));
-	kill_anon_super(sb);
-}
-
-static const struct super_operations autofs_sops = {
-	.statfs		= simple_statfs,
-	.show_options	= generic_show_options,
-};
-
-enum {Opt_err, Opt_fd, Opt_uid, Opt_gid, Opt_pgrp, Opt_minproto, Opt_maxproto};
-
-static const match_table_t autofs_tokens = {
-	{Opt_fd, "fd=%u"},
-	{Opt_uid, "uid=%u"},
-	{Opt_gid, "gid=%u"},
-	{Opt_pgrp, "pgrp=%u"},
-	{Opt_minproto, "minproto=%u"},
-	{Opt_maxproto, "maxproto=%u"},
-	{Opt_err, NULL}
-};
-
-static int parse_options(char *options, int *pipefd, uid_t *uid, gid_t *gid,
-		pid_t *pgrp, int *minproto, int *maxproto)
-{
-	char *p;
-	substring_t args[MAX_OPT_ARGS];
-	int option;
-
-	*uid = current_uid();
-	*gid = current_gid();
-	*pgrp = task_pgrp_nr(current);
-
-	*minproto = *maxproto = AUTOFS_PROTO_VERSION;
-
-	*pipefd = -1;
-
-	if (!options)
-		return 1;
-
-	while ((p = strsep(&options, ",")) != NULL) {
-		int token;
-		if (!*p)
-			continue;
-
-		token = match_token(p, autofs_tokens, args);
-		switch (token) {
-		case Opt_fd:
-			if (match_int(&args[0], &option))
-				return 1;
-			*pipefd = option;
-			break;
-		case Opt_uid:
-			if (match_int(&args[0], &option))
-				return 1;
-			*uid = option;
-			break;
-		case Opt_gid:
-			if (match_int(&args[0], &option))
-				return 1;
-			*gid = option;
-			break;
-		case Opt_pgrp:
-			if (match_int(&args[0], &option))
-				return 1;
-			*pgrp = option;
-			break;
-		case Opt_minproto:
-			if (match_int(&args[0], &option))
-				return 1;
-			*minproto = option;
-			break;
-		case Opt_maxproto:
-			if (match_int(&args[0], &option))
-				return 1;
-			*maxproto = option;
-			break;
-		default:
-			return 1;
-		}
-	}
-	return (*pipefd < 0);
-}
-
-int autofs_fill_super(struct super_block *s, void *data, int silent)
-{
-	struct inode * root_inode;
-	struct dentry * root;
-	struct file * pipe;
-	int pipefd;
-	struct autofs_sb_info *sbi;
-	int minproto, maxproto;
-	pid_t pgid;
-
-	save_mount_options(s, data);
-
-	sbi = kzalloc(sizeof(*sbi), GFP_KERNEL);
-	if (!sbi)
-		goto fail_unlock;
-	DPRINTK(("autofs: starting up, sbi = %p\n",sbi));
-
-	s->s_fs_info = sbi;
-	sbi->magic = AUTOFS_SBI_MAGIC;
-	sbi->pipe = NULL;
-	sbi->catatonic = 1;
-	sbi->exp_timeout = 0;
-	autofs_initialize_hash(&sbi->dirhash);
-	sbi->queues = NULL;
-	memset(sbi->symlink_bitmap, 0, sizeof(long)*AUTOFS_SYMLINK_BITMAP_LEN);
-	sbi->next_dir_ino = AUTOFS_FIRST_DIR_INO;
-	s->s_blocksize = 1024;
-	s->s_blocksize_bits = 10;
-	s->s_magic = AUTOFS_SUPER_MAGIC;
-	s->s_op = &autofs_sops;
-	s->s_time_gran = 1;
-	sbi->sb = s;
-
-	root_inode = autofs_iget(s, AUTOFS_ROOT_INO);
-	if (IS_ERR(root_inode))
-		goto fail_free;
-	root = d_alloc_root(root_inode);
-	pipe = NULL;
-
-	if (!root)
-		goto fail_iput;
-
-	/* Can this call block?  - WTF cares? s is locked. */
-	if (parse_options(data, &pipefd, &root_inode->i_uid,
-				&root_inode->i_gid, &pgid, &minproto,
-				&maxproto)) {
-		printk("autofs: called with bogus options\n");
-		goto fail_dput;
-	}
-
-	/* Couldn't this be tested earlier? */
-	if (minproto > AUTOFS_PROTO_VERSION ||
-	     maxproto < AUTOFS_PROTO_VERSION) {
-		printk("autofs: kernel does not match daemon version\n");
-		goto fail_dput;
-	}
-
-	DPRINTK(("autofs: pipe fd = %d, pgrp = %u\n", pipefd, pgid));
-	sbi->oz_pgrp = find_get_pid(pgid);
-
-	if (!sbi->oz_pgrp) {
-		printk("autofs: could not find process group %d\n", pgid);
-		goto fail_dput;
-	}
-
-	pipe = fget(pipefd);
-	
-	if (!pipe) {
-		printk("autofs: could not open pipe file descriptor\n");
-		goto fail_put_pid;
-	}
-
-	if (!pipe->f_op || !pipe->f_op->write)
-		goto fail_fput;
-	sbi->pipe = pipe;
-	sbi->catatonic = 0;
-
-	/*
-	 * Success! Install the root dentry now to indicate completion.
-	 */
-	s->s_root = root;
-	return 0;
-
-fail_fput:
-	printk("autofs: pipe file descriptor does not contain proper ops\n");
-	fput(pipe);
-fail_put_pid:
-	put_pid(sbi->oz_pgrp);
-fail_dput:
-	dput(root);
-	goto fail_free;
-fail_iput:
-	printk("autofs: get root dentry failed\n");
-	iput(root_inode);
-fail_free:
-	kfree(sbi);
-	s->s_fs_info = NULL;
-fail_unlock:
-	return -EINVAL;
-}
-
-struct inode *autofs_iget(struct super_block *sb, unsigned long ino)
-{
-	unsigned int n;
-	struct autofs_sb_info *sbi = autofs_sbi(sb);
-	struct inode *inode;
-
-	inode = iget_locked(sb, ino);
-	if (!inode)
-		return ERR_PTR(-ENOMEM);
-	if (!(inode->i_state & I_NEW))
-		return inode;
-
-	/* Initialize to the default case (stub directory) */
-
-	inode->i_op = &simple_dir_inode_operations;
-	inode->i_fop = &simple_dir_operations;
-	inode->i_mode = S_IFDIR | S_IRUGO | S_IXUGO;
-	inode->i_nlink = 2;
-	inode->i_mtime = inode->i_atime = inode->i_ctime = CURRENT_TIME;
-
-	if (ino == AUTOFS_ROOT_INO) {
-		inode->i_mode = S_IFDIR | S_IRUGO | S_IXUGO | S_IWUSR;
-		inode->i_op = &autofs_root_inode_operations;
-		inode->i_fop = &autofs_root_operations;
-		goto done;
-	} 
-	
-	inode->i_uid = inode->i_sb->s_root->d_inode->i_uid;
-	inode->i_gid = inode->i_sb->s_root->d_inode->i_gid;
-	
-	if (ino >= AUTOFS_FIRST_SYMLINK && ino < AUTOFS_FIRST_DIR_INO) {
-		/* Symlink inode - should be in symlink list */
-		struct autofs_symlink *sl;
-
-		n = ino - AUTOFS_FIRST_SYMLINK;
-		if (n >= AUTOFS_MAX_SYMLINKS || !test_bit(n,sbi->symlink_bitmap)) {
-			printk("autofs: Looking for bad symlink inode %u\n", (unsigned int) ino);
-			goto done;
-		}
-		
-		inode->i_op = &autofs_symlink_inode_operations;
-		sl = &sbi->symlink[n];
-		inode->i_private = sl;
-		inode->i_mode = S_IFLNK | S_IRWXUGO;
-		inode->i_mtime.tv_sec = inode->i_ctime.tv_sec = sl->mtime;
-		inode->i_mtime.tv_nsec = inode->i_ctime.tv_nsec = 0;
-		inode->i_size = sl->len;
-		inode->i_nlink = 1;
-	}
-
-done:
-	unlock_new_inode(inode);
-	return inode;
-}
diff --git a/drivers/staging/autofs/root.c b/drivers/staging/autofs/root.c
deleted file mode 100644
index bf0e975..0000000
--- a/drivers/staging/autofs/root.c
+++ /dev/null
@@ -1,648 +0,0 @@
-/* -*- linux-c -*- --------------------------------------------------------- *
- *
- * drivers/staging/autofs/root.c
- *
- *  Copyright 1997-1998 Transmeta Corporation -- All Rights Reserved
- *
- * This file is part of the Linux kernel and is made available under
- * the terms of the GNU General Public License, version 2, or at your
- * option, any later version, incorporated herein by reference.
- *
- * ------------------------------------------------------------------------- */
-
-#include <linux/capability.h>
-#include <linux/errno.h>
-#include <linux/stat.h>
-#include <linux/slab.h>
-#include <linux/param.h>
-#include <linux/time.h>
-#include <linux/compat.h>
-#include <linux/smp_lock.h>
-#include "autofs_i.h"
-
-static int autofs_root_readdir(struct file *,void *,filldir_t);
-static struct dentry *autofs_root_lookup(struct inode *,struct dentry *, struct nameidata *);
-static int autofs_root_symlink(struct inode *,struct dentry *,const char *);
-static int autofs_root_unlink(struct inode *,struct dentry *);
-static int autofs_root_rmdir(struct inode *,struct dentry *);
-static int autofs_root_mkdir(struct inode *,struct dentry *,int);
-static long autofs_root_ioctl(struct file *,unsigned int,unsigned long);
-#ifdef CONFIG_COMPAT
-static long autofs_root_compat_ioctl(struct file *,unsigned int,unsigned long);
-#endif
-
-const struct file_operations autofs_root_operations = {
-	.llseek		= generic_file_llseek,
-	.read		= generic_read_dir,
-	.readdir	= autofs_root_readdir,
-	.unlocked_ioctl	= autofs_root_ioctl,
-#ifdef CONFIG_COMPAT
-	.compat_ioctl	= autofs_root_compat_ioctl,
-#endif
-};
-
-const struct inode_operations autofs_root_inode_operations = {
-        .lookup		= autofs_root_lookup,
-        .unlink		= autofs_root_unlink,
-        .symlink	= autofs_root_symlink,
-        .mkdir		= autofs_root_mkdir,
-        .rmdir		= autofs_root_rmdir,
-};
-
-static int autofs_root_readdir(struct file *filp, void *dirent, filldir_t filldir)
-{
-	struct autofs_dir_ent *ent = NULL;
-	struct autofs_dirhash *dirhash;
-	struct autofs_sb_info *sbi;
-	struct inode * inode = filp->f_path.dentry->d_inode;
-	off_t onr, nr;
-
-	lock_kernel();
-
-	sbi = autofs_sbi(inode->i_sb);
-	dirhash = &sbi->dirhash;
-	nr = filp->f_pos;
-
-	switch(nr)
-	{
-	case 0:
-		if (filldir(dirent, ".", 1, nr, inode->i_ino, DT_DIR) < 0)
-			goto out;
-		filp->f_pos = ++nr;
-		/* fall through */
-	case 1:
-		if (filldir(dirent, "..", 2, nr, inode->i_ino, DT_DIR) < 0)
-			goto out;
-		filp->f_pos = ++nr;
-		/* fall through */
-	default:
-		while (onr = nr, ent = autofs_hash_enum(dirhash,&nr,ent)) {
-			if (!ent->dentry || d_mountpoint(ent->dentry)) {
-				if (filldir(dirent,ent->name,ent->len,onr,ent->ino,DT_UNKNOWN) < 0)
-					goto out;
-				filp->f_pos = nr;
-			}
-		}
-		break;
-	}
-
-out:
-	unlock_kernel();
-	return 0;
-}
-
-static int try_to_fill_dentry(struct dentry *dentry, struct super_block *sb, struct autofs_sb_info *sbi)
-{
-	struct inode * inode;
-	struct autofs_dir_ent *ent;
-	int status = 0;
-
-	if (!(ent = autofs_hash_lookup(&sbi->dirhash, &dentry->d_name))) {
-		do {
-			if (status && dentry->d_inode) {
-				if (status != -ENOENT)
-					printk("autofs warning: lookup failure on positive dentry, status = %d, name = %s\n", status, dentry->d_name.name);
-				return 0; /* Try to get the kernel to invalidate this dentry */
-			}
-
-			/* Turn this into a real negative dentry? */
-			if (status == -ENOENT) {
-				dentry->d_time = jiffies + AUTOFS_NEGATIVE_TIMEOUT;
-				dentry->d_flags &= ~DCACHE_AUTOFS_PENDING;
-				return 1;
-			} else if (status) {
-				/* Return a negative dentry, but leave it "pending" */
-				return 1;
-			}
-			status = autofs_wait(sbi, &dentry->d_name);
-		} while (!(ent = autofs_hash_lookup(&sbi->dirhash, &dentry->d_name)));
-	}
-
-	/* Abuse this field as a pointer to the directory entry, used to
-	   find the expire list pointers */
-	dentry->d_time = (unsigned long) ent;
-	
-	if (!dentry->d_inode) {
-		inode = autofs_iget(sb, ent->ino);
-		if (IS_ERR(inode)) {
-			/* Failed, but leave pending for next time */
-			return 1;
-		}
-		dentry->d_inode = inode;
-	}
-
-	/* If this is a directory that isn't a mount point, bitch at the
-	   daemon and fix it in user space */
-	if (S_ISDIR(dentry->d_inode->i_mode) && !d_mountpoint(dentry)) {
-		return !autofs_wait(sbi, &dentry->d_name);
-	}
-
-	/* We don't update the usages for the autofs daemon itself, this
-	   is necessary for recursive autofs mounts */
-	if (!autofs_oz_mode(sbi)) {
-		autofs_update_usage(&sbi->dirhash,ent);
-	}
-
-	dentry->d_flags &= ~DCACHE_AUTOFS_PENDING;
-	return 1;
-}
-
-
-/*
- * Revalidate is called on every cache lookup.  Some of those
- * cache lookups may actually happen while the dentry is not
- * yet completely filled in, and revalidate has to delay such
- * lookups..
- */
-static int autofs_revalidate(struct dentry *dentry, struct nameidata *nd)
-{
-	struct inode * dir;
-	struct autofs_sb_info *sbi;
-	struct autofs_dir_ent *ent;
-	int res;
-
-	if (nd->flags & LOOKUP_RCU)
-		return -ECHILD;
-
-	lock_kernel();
-	dir = dentry->d_parent->d_inode;
-	sbi = autofs_sbi(dir->i_sb);
-
-	/* Pending dentry */
-	if (dentry->d_flags & DCACHE_AUTOFS_PENDING) {
-		if (autofs_oz_mode(sbi))
-			res = 1;
-		else
-			res = try_to_fill_dentry(dentry, dir->i_sb, sbi);
-		unlock_kernel();
-		return res;
-	}
-
-	/* Negative dentry.. invalidate if "old" */
-	if (!dentry->d_inode) {
-		unlock_kernel();
-		return (dentry->d_time - jiffies <= AUTOFS_NEGATIVE_TIMEOUT);
-	}
-		
-	/* Check for a non-mountpoint directory */
-	if (S_ISDIR(dentry->d_inode->i_mode) && !d_mountpoint(dentry)) {
-		if (autofs_oz_mode(sbi))
-			res = 1;
-		else
-			res = try_to_fill_dentry(dentry, dir->i_sb, sbi);
-		unlock_kernel();
-		return res;
-	}
-
-	/* Update the usage list */
-	if (!autofs_oz_mode(sbi)) {
-		ent = (struct autofs_dir_ent *) dentry->d_time;
-		if (ent)
-			autofs_update_usage(&sbi->dirhash,ent);
-	}
-	unlock_kernel();
-	return 1;
-}
-
-static const struct dentry_operations autofs_dentry_operations = {
-	.d_revalidate	= autofs_revalidate,
-};
-
-static struct dentry *autofs_root_lookup(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
-{
-	struct autofs_sb_info *sbi;
-	int oz_mode;
-
-	DPRINTK(("autofs_root_lookup: name = "));
-	lock_kernel();
-	autofs_say(dentry->d_name.name,dentry->d_name.len);
-
-	if (dentry->d_name.len > NAME_MAX) {
-		unlock_kernel();
-		return ERR_PTR(-ENAMETOOLONG);/* File name too long to exist */
-	}
-
-	sbi = autofs_sbi(dir->i_sb);
-
-	oz_mode = autofs_oz_mode(sbi);
-	DPRINTK(("autofs_lookup: pid = %u, pgrp = %u, catatonic = %d, "
-				"oz_mode = %d\n", task_pid_nr(current),
-				task_pgrp_nr(current), sbi->catatonic,
-				oz_mode));
-
-	/*
-	 * Mark the dentry incomplete, but add it. This is needed so
-	 * that the VFS layer knows about the dentry, and we can count
-	 * on catching any lookups through the revalidate.
-	 *
-	 * Let all the hard work be done by the revalidate function that
-	 * needs to be able to do this anyway..
-	 *
-	 * We need to do this before we release the directory semaphore.
-	 */
-	d_set_d_op(dentry, &autofs_dentry_operations);
-	dentry->d_flags |= DCACHE_AUTOFS_PENDING;
-	d_add(dentry, NULL);
-
-	mutex_unlock(&dir->i_mutex);
-	autofs_revalidate(dentry, nd);
-	mutex_lock(&dir->i_mutex);
-
-	/*
-	 * If we are still pending, check if we had to handle
-	 * a signal. If so we can force a restart..
-	 */
-	if (dentry->d_flags & DCACHE_AUTOFS_PENDING) {
-		/* See if we were interrupted */
-		if (signal_pending(current)) {
-			sigset_t *sigset = &current->pending.signal;
-			if (sigismember (sigset, SIGKILL) ||
-			    sigismember (sigset, SIGQUIT) ||
-			    sigismember (sigset, SIGINT)) {
-				unlock_kernel();
-				return ERR_PTR(-ERESTARTNOINTR);
-			}
-		}
-	}
-	unlock_kernel();
-
-	/*
-	 * If this dentry is unhashed, then we shouldn't honour this
-	 * lookup even if the dentry is positive.  Returning ENOENT here
-	 * doesn't do the right thing for all system calls, but it should
-	 * be OK for the operations we permit from an autofs.
-	 */
-	if (dentry->d_inode && d_unhashed(dentry))
-		return ERR_PTR(-ENOENT);
-
-	return NULL;
-}
-
-static int autofs_root_symlink(struct inode *dir, struct dentry *dentry, const char *symname)
-{
-	struct autofs_sb_info *sbi = autofs_sbi(dir->i_sb);
-	struct autofs_dirhash *dh = &sbi->dirhash;
-	struct autofs_dir_ent *ent;
-	unsigned int n;
-	int slsize;
-	struct autofs_symlink *sl;
-	struct inode *inode;
-
-	DPRINTK(("autofs_root_symlink: %s <- ", symname));
-	autofs_say(dentry->d_name.name,dentry->d_name.len);
-
-	lock_kernel();
-	if (!autofs_oz_mode(sbi)) {
-		unlock_kernel();
-		return -EACCES;
-	}
-
-	if (autofs_hash_lookup(dh, &dentry->d_name)) {
-		unlock_kernel();
-		return -EEXIST;
-	}
-
-	n = find_first_zero_bit(sbi->symlink_bitmap,AUTOFS_MAX_SYMLINKS);
-	if (n >= AUTOFS_MAX_SYMLINKS) {
-		unlock_kernel();
-		return -ENOSPC;
-	}
-
-	set_bit(n,sbi->symlink_bitmap);
-	sl = &sbi->symlink[n];
-	sl->len = strlen(symname);
-	sl->data = kmalloc(slsize = sl->len+1, GFP_KERNEL);
-	if (!sl->data) {
-		clear_bit(n,sbi->symlink_bitmap);
-		unlock_kernel();
-		return -ENOSPC;
-	}
-
-	ent = kmalloc(sizeof(struct autofs_dir_ent), GFP_KERNEL);
-	if (!ent) {
-		kfree(sl->data);
-		clear_bit(n,sbi->symlink_bitmap);
-		unlock_kernel();
-		return -ENOSPC;
-	}
-
-	ent->name = kmalloc(dentry->d_name.len+1, GFP_KERNEL);
-	if (!ent->name) {
-		kfree(sl->data);
-		kfree(ent);
-		clear_bit(n,sbi->symlink_bitmap);
-		unlock_kernel();
-		return -ENOSPC;
-	}
-
-	memcpy(sl->data,symname,slsize);
-	sl->mtime = get_seconds();
-
-	ent->ino = AUTOFS_FIRST_SYMLINK + n;
-	ent->hash = dentry->d_name.hash;
-	memcpy(ent->name, dentry->d_name.name, 1+(ent->len = dentry->d_name.len));
-	ent->dentry = NULL;	/* We don't keep the dentry for symlinks */
-
-	autofs_hash_insert(dh,ent);
-
-	inode = autofs_iget(dir->i_sb, ent->ino);
-	if (IS_ERR(inode))
-		return PTR_ERR(inode);
-
-	d_instantiate(dentry, inode);
-	unlock_kernel();
-	return 0;
-}
-
-/*
- * NOTE!
- *
- * Normal filesystems would do a "d_delete()" to tell the VFS dcache
- * that the file no longer exists. However, doing that means that the
- * VFS layer can turn the dentry into a negative dentry, which we
- * obviously do not want (we're dropping the entry not because it
- * doesn't exist, but because it has timed out).
- *
- * Also see autofs_root_rmdir()..
- */
-static int autofs_root_unlink(struct inode *dir, struct dentry *dentry)
-{
-	struct autofs_sb_info *sbi = autofs_sbi(dir->i_sb);
-	struct autofs_dirhash *dh = &sbi->dirhash;
-	struct autofs_dir_ent *ent;
-	unsigned int n;
-
-	/* This allows root to remove symlinks */
-	lock_kernel();
-	if (!autofs_oz_mode(sbi) && !capable(CAP_SYS_ADMIN)) {
-		unlock_kernel();
-		return -EACCES;
-	}
-
-	ent = autofs_hash_lookup(dh, &dentry->d_name);
-	if (!ent) {
-		unlock_kernel();
-		return -ENOENT;
-	}
-
-	n = ent->ino - AUTOFS_FIRST_SYMLINK;
-	if (n >= AUTOFS_MAX_SYMLINKS) {
-		unlock_kernel();
-		return -EISDIR;	/* It's a directory, dummy */
-	}
-	if (!test_bit(n,sbi->symlink_bitmap)) {
-		unlock_kernel();
-		return -EINVAL;	/* Nonexistent symlink?  Shouldn't happen */
-	}
-	
-	dentry->d_time = (unsigned long)(struct autofs_dirhash *)NULL;
-	autofs_hash_delete(ent);
-	clear_bit(n,sbi->symlink_bitmap);
-	kfree(sbi->symlink[n].data);
-	d_drop(dentry);
-	
-	unlock_kernel();
-	return 0;
-}
-
-static int autofs_root_rmdir(struct inode *dir, struct dentry *dentry)
-{
-	struct autofs_sb_info *sbi = autofs_sbi(dir->i_sb);
-	struct autofs_dirhash *dh = &sbi->dirhash;
-	struct autofs_dir_ent *ent;
-
-	lock_kernel();
-	if (!autofs_oz_mode(sbi)) {
-		unlock_kernel();
-		return -EACCES;
-	}
-
-	ent = autofs_hash_lookup(dh, &dentry->d_name);
-	if (!ent) {
-		unlock_kernel();
-		return -ENOENT;
-	}
-
-	if ((unsigned int)ent->ino < AUTOFS_FIRST_DIR_INO) {
-		unlock_kernel();
-		return -ENOTDIR; /* Not a directory */
-	}
-
-	if (ent->dentry != dentry) {
-		printk("autofs_rmdir: odentry != dentry for entry %s\n", dentry->d_name.name);
-	}
-
-	dentry->d_time = (unsigned long)(struct autofs_dir_ent *)NULL;
-	autofs_hash_delete(ent);
-	drop_nlink(dir);
-	d_drop(dentry);
-	unlock_kernel();
-
-	return 0;
-}
-
-static int autofs_root_mkdir(struct inode *dir, struct dentry *dentry, int mode)
-{
-	struct autofs_sb_info *sbi = autofs_sbi(dir->i_sb);
-	struct autofs_dirhash *dh = &sbi->dirhash;
-	struct autofs_dir_ent *ent;
-	struct inode *inode;
-	ino_t ino;
-
-	lock_kernel();
-	if (!autofs_oz_mode(sbi)) {
-		unlock_kernel();
-		return -EACCES;
-	}
-
-	ent = autofs_hash_lookup(dh, &dentry->d_name);
-	if (ent) {
-		unlock_kernel();
-		return -EEXIST;
-	}
-
-	if (sbi->next_dir_ino < AUTOFS_FIRST_DIR_INO) {
-		printk("autofs: Out of inode numbers -- what the heck did you do??\n");
-		unlock_kernel();
-		return -ENOSPC;
-	}
-	ino = sbi->next_dir_ino++;
-
-	ent = kmalloc(sizeof(struct autofs_dir_ent), GFP_KERNEL);
-	if (!ent) {
-		unlock_kernel();
-		return -ENOSPC;
-	}
-
-	ent->name = kmalloc(dentry->d_name.len+1, GFP_KERNEL);
-	if (!ent->name) {
-		kfree(ent);
-		unlock_kernel();
-		return -ENOSPC;
-	}
-
-	ent->hash = dentry->d_name.hash;
-	memcpy(ent->name, dentry->d_name.name, 1+(ent->len = dentry->d_name.len));
-	ent->ino = ino;
-	ent->dentry = dentry;
-	autofs_hash_insert(dh,ent);
-
-	inc_nlink(dir);
-
-	inode = autofs_iget(dir->i_sb, ino);
-	if (IS_ERR(inode)) {
-		drop_nlink(dir);
-		return PTR_ERR(inode);
-	}
-
-	d_instantiate(dentry, inode);
-	unlock_kernel();
-
-	return 0;
-}
-
-/* Get/set timeout ioctl() operation */
-#ifdef CONFIG_COMPAT
-static inline int autofs_compat_get_set_timeout(struct autofs_sb_info *sbi,
-					 unsigned int __user *p)
-{
-	unsigned long ntimeout;
-
-	if (get_user(ntimeout, p) ||
-	    put_user(sbi->exp_timeout / HZ, p))
-		return -EFAULT;
-
-	if (ntimeout > UINT_MAX/HZ)
-		sbi->exp_timeout = 0;
-	else
-		sbi->exp_timeout = ntimeout * HZ;
-
-	return 0;
-}
-#endif
-
-static inline int autofs_get_set_timeout(struct autofs_sb_info *sbi,
-					 unsigned long __user *p)
-{
-	unsigned long ntimeout;
-
-	if (get_user(ntimeout, p) ||
-	    put_user(sbi->exp_timeout / HZ, p))
-		return -EFAULT;
-
-	if (ntimeout > ULONG_MAX/HZ)
-		sbi->exp_timeout = 0;
-	else
-		sbi->exp_timeout = ntimeout * HZ;
-
-	return 0;
-}
-
-/* Return protocol version */
-static inline int autofs_get_protover(int __user *p)
-{
-	return put_user(AUTOFS_PROTO_VERSION, p);
-}
-
-/* Perform an expiry operation */
-static inline int autofs_expire_run(struct super_block *sb,
-				    struct autofs_sb_info *sbi,
-				    struct vfsmount *mnt,
-				    struct autofs_packet_expire __user *pkt_p)
-{
-	struct autofs_dir_ent *ent;
-	struct autofs_packet_expire pkt;
-
-	memset(&pkt,0,sizeof pkt);
-
-	pkt.hdr.proto_version = AUTOFS_PROTO_VERSION;
-	pkt.hdr.type = autofs_ptype_expire;
-
-	if (!sbi->exp_timeout || !(ent = autofs_expire(sb,sbi,mnt)))
-		return -EAGAIN;
-
-	pkt.len = ent->len;
-	memcpy(pkt.name, ent->name, pkt.len);
-	pkt.name[pkt.len] = '\0';
-
-	if (copy_to_user(pkt_p, &pkt, sizeof(struct autofs_packet_expire)))
-		return -EFAULT;
-
-	return 0;
-}
-
-/*
- * ioctl()'s on the root directory is the chief method for the daemon to
- * generate kernel reactions
- */
-static int autofs_do_root_ioctl(struct inode *inode, struct file *filp,
-			     unsigned int cmd, unsigned long arg)
-{
-	struct autofs_sb_info *sbi = autofs_sbi(inode->i_sb);
-	void __user *argp = (void __user *)arg;
-
-	DPRINTK(("autofs_ioctl: cmd = 0x%08x, arg = 0x%08lx, sbi = %p, pgrp = %u\n",cmd,arg,sbi,task_pgrp_nr(current)));
-
-	if (_IOC_TYPE(cmd) != _IOC_TYPE(AUTOFS_IOC_FIRST) ||
-	     _IOC_NR(cmd) - _IOC_NR(AUTOFS_IOC_FIRST) >= AUTOFS_IOC_COUNT)
-		return -ENOTTY;
-	
-	if (!autofs_oz_mode(sbi) && !capable(CAP_SYS_ADMIN))
-		return -EPERM;
-	
-	switch(cmd) {
-	case AUTOFS_IOC_READY:	/* Wait queue: go ahead and retry */
-		return autofs_wait_release(sbi,(autofs_wqt_t)arg,0);
-	case AUTOFS_IOC_FAIL:	/* Wait queue: fail with ENOENT */
-		return autofs_wait_release(sbi,(autofs_wqt_t)arg,-ENOENT);
-	case AUTOFS_IOC_CATATONIC: /* Enter catatonic mode (daemon shutdown) */
-		autofs_catatonic_mode(sbi);
-		return 0;
-	case AUTOFS_IOC_PROTOVER: /* Get protocol version */
-		return autofs_get_protover(argp);
-#ifdef CONFIG_COMPAT
-	case AUTOFS_IOC_SETTIMEOUT32:
-		return autofs_compat_get_set_timeout(sbi, argp);
-#endif
-	case AUTOFS_IOC_SETTIMEOUT:
-		return autofs_get_set_timeout(sbi, argp);
-	case AUTOFS_IOC_EXPIRE:
-		return autofs_expire_run(inode->i_sb, sbi, filp->f_path.mnt,
-					 argp);
-	default:
-		return -ENOSYS;
-	}
-
-}
-
-static long autofs_root_ioctl(struct file *filp,
-			     unsigned int cmd, unsigned long arg)
-{
-	int ret;
-
-	lock_kernel();
-	ret = autofs_do_root_ioctl(filp->f_path.dentry->d_inode,
-				   filp, cmd, arg);
-	unlock_kernel();
-
-	return ret;
-}
-
-#ifdef CONFIG_COMPAT
-static long autofs_root_compat_ioctl(struct file *filp,
-			     unsigned int cmd, unsigned long arg)
-{
-	struct inode *inode = filp->f_path.dentry->d_inode;
-	int ret;
-
-	lock_kernel();
-	if (cmd == AUTOFS_IOC_READY || cmd == AUTOFS_IOC_FAIL)
-		ret = autofs_do_root_ioctl(inode, filp, cmd, arg);
-	else
-		ret = autofs_do_root_ioctl(inode, filp, cmd,
-			(unsigned long)compat_ptr(arg));
-	unlock_kernel();
-
-	return ret;
-}
-#endif
diff --git a/drivers/staging/autofs/symlink.c b/drivers/staging/autofs/symlink.c
deleted file mode 100644
index ff2c65c..0000000
--- a/drivers/staging/autofs/symlink.c
+++ /dev/null
@@ -1,26 +0,0 @@
-/* -*- linux-c -*- --------------------------------------------------------- *
- *
- * drivers/staging/autofs/symlink.c
- *
- *  Copyright 1997-1998 Transmeta Corporation -- All Rights Reserved
- *
- * This file is part of the Linux kernel and is made available under
- * the terms of the GNU General Public License, version 2, or at your
- * option, any later version, incorporated herein by reference.
- *
- * ------------------------------------------------------------------------- */
-
-#include "autofs_i.h"
-
-/* Nothing to release.. */
-static void *autofs_follow_link(struct dentry *dentry, struct nameidata *nd)
-{
-	char *s=((struct autofs_symlink *)dentry->d_inode->i_private)->data;
-	nd_set_link(nd, s);
-	return NULL;
-}
-
-const struct inode_operations autofs_symlink_inode_operations = {
-	.readlink	= generic_readlink,
-	.follow_link	= autofs_follow_link
-};
diff --git a/drivers/staging/autofs/waitq.c b/drivers/staging/autofs/waitq.c
deleted file mode 100644
index d3c8cc9..0000000
--- a/drivers/staging/autofs/waitq.c
+++ /dev/null
@@ -1,205 +0,0 @@
-/* -*- linux-c -*- --------------------------------------------------------- *
- *
- * drivers/staging/autofs/waitq.c
- *
- *  Copyright 1997-1998 Transmeta Corporation -- All Rights Reserved
- *
- * This file is part of the Linux kernel and is made available under
- * the terms of the GNU General Public License, version 2, or at your
- * option, any later version, incorporated herein by reference.
- *
- * ------------------------------------------------------------------------- */
-
-#include <linux/slab.h>
-#include <linux/time.h>
-#include <linux/signal.h>
-#include <linux/file.h>
-#include "autofs_i.h"
-
-/* We make this a static variable rather than a part of the superblock; it
-   is better if we don't reassign numbers easily even across filesystems */
-static autofs_wqt_t autofs_next_wait_queue = 1;
-
-/* These are the signals we allow interrupting a pending mount */
-#define SHUTDOWN_SIGS	(sigmask(SIGKILL) | sigmask(SIGINT) | sigmask(SIGQUIT))
-
-void autofs_catatonic_mode(struct autofs_sb_info *sbi)
-{
-	struct autofs_wait_queue *wq, *nwq;
-
-	DPRINTK(("autofs: entering catatonic mode\n"));
-
-	sbi->catatonic = 1;
-	wq = sbi->queues;
-	sbi->queues = NULL;	/* Erase all wait queues */
-	while ( wq ) {
-		nwq = wq->next;
-		wq->status = -ENOENT; /* Magic is gone - report failure */
-		kfree(wq->name);
-		wq->name = NULL;
-		wake_up(&wq->queue);
-		wq = nwq;
-	}
-	fput(sbi->pipe);	/* Close the pipe */
-	sbi->pipe = NULL;
-	autofs_hash_dputall(&sbi->dirhash); /* Remove all dentry pointers */
-}
-
-static int autofs_write(struct file *file, const void *addr, int bytes)
-{
-	unsigned long sigpipe, flags;
-	mm_segment_t fs;
-	const char *data = (const char *)addr;
-	ssize_t wr = 0;
-
-	/** WARNING: this is not safe for writing more than PIPE_BUF bytes! **/
-
-	sigpipe = sigismember(&current->pending.signal, SIGPIPE);
-
-	/* Save pointer to user space and point back to kernel space */
-	fs = get_fs();
-	set_fs(KERNEL_DS);
-
-	while (bytes &&
-	       (wr = file->f_op->write(file,data,bytes,&file->f_pos)) > 0) {
-		data += wr;
-		bytes -= wr;
-	}
-
-	set_fs(fs);
-
-	/* Keep the currently executing process from receiving a
-	   SIGPIPE unless it was already supposed to get one */
-	if (wr == -EPIPE && !sigpipe) {
-		spin_lock_irqsave(&current->sighand->siglock, flags);
-		sigdelset(&current->pending.signal, SIGPIPE);
-		recalc_sigpending();
-		spin_unlock_irqrestore(&current->sighand->siglock, flags);
-	}
-
-	return (bytes > 0);
-}
-	
-static void autofs_notify_daemon(struct autofs_sb_info *sbi, struct autofs_wait_queue *wq)
-{
-	struct autofs_packet_missing pkt;
-
-	DPRINTK(("autofs_wait: wait id = 0x%08lx, name = ", wq->wait_queue_token));
-	autofs_say(wq->name,wq->len);
-
-	memset(&pkt,0,sizeof pkt); /* For security reasons */
-
-	pkt.hdr.proto_version = AUTOFS_PROTO_VERSION;
-	pkt.hdr.type = autofs_ptype_missing;
-	pkt.wait_queue_token = wq->wait_queue_token;
-	pkt.len = wq->len;
-        memcpy(pkt.name, wq->name, pkt.len);
-	pkt.name[pkt.len] = '\0';
-
-	if ( autofs_write(sbi->pipe,&pkt,sizeof(struct autofs_packet_missing)) )
-		autofs_catatonic_mode(sbi);
-}
-
-int autofs_wait(struct autofs_sb_info *sbi, struct qstr *name)
-{
-	struct autofs_wait_queue *wq;
-	int status;
-
-	/* In catatonic mode, we don't wait for nobody */
-	if ( sbi->catatonic )
-		return -ENOENT;
-	
-	/* We shouldn't be able to get here, but just in case */
-	if ( name->len > NAME_MAX )
-		return -ENOENT;
-
-	for ( wq = sbi->queues ; wq ; wq = wq->next ) {
-		if ( wq->hash == name->hash &&
-		     wq->len == name->len &&
-		     wq->name && !memcmp(wq->name,name->name,name->len) )
-			break;
-	}
-	
-	if ( !wq ) {
-		/* Create a new wait queue */
-		wq = kmalloc(sizeof(struct autofs_wait_queue),GFP_KERNEL);
-		if ( !wq )
-			return -ENOMEM;
-
-		wq->name = kmalloc(name->len,GFP_KERNEL);
-		if ( !wq->name ) {
-			kfree(wq);
-			return -ENOMEM;
-		}
-		wq->wait_queue_token = autofs_next_wait_queue++;
-		init_waitqueue_head(&wq->queue);
-		wq->hash = name->hash;
-		wq->len = name->len;
-		wq->status = -EINTR; /* Status return if interrupted */
-		memcpy(wq->name, name->name, name->len);
-		wq->next = sbi->queues;
-		sbi->queues = wq;
-
-		/* autofs_notify_daemon() may block */
-		wq->wait_ctr = 2;
-		autofs_notify_daemon(sbi,wq);
-	} else
-		wq->wait_ctr++;
-
-	/* wq->name is NULL if and only if the lock is already released */
-
-	if ( sbi->catatonic ) {
-		/* We might have slept, so check again for catatonic mode */
-		wq->status = -ENOENT;
-		kfree(wq->name);
-		wq->name = NULL;
-	}
-
-	if ( wq->name ) {
-		/* Block all but "shutdown" signals while waiting */
-		sigset_t sigmask;
-
-		siginitsetinv(&sigmask, SHUTDOWN_SIGS);
-		sigprocmask(SIG_BLOCK, &sigmask, &sigmask);
-
-		interruptible_sleep_on(&wq->queue);
-
-		sigprocmask(SIG_SETMASK, &sigmask, NULL);
-	} else {
-		DPRINTK(("autofs_wait: skipped sleeping\n"));
-	}
-
-	status = wq->status;
-
-	if ( ! --wq->wait_ctr )	/* Are we the last process to need status? */
-		kfree(wq);
-
-	return status;
-}
-
-
-int autofs_wait_release(struct autofs_sb_info *sbi, autofs_wqt_t wait_queue_token, int status)
-{
-	struct autofs_wait_queue *wq, **wql;
-
-	for (wql = &sbi->queues; (wq = *wql) != NULL; wql = &wq->next) {
-		if ( wq->wait_queue_token == wait_queue_token )
-			break;
-	}
-	if ( !wq )
-		return -EINVAL;
-
-	*wql = wq->next;	/* Unlink from chain */
-	kfree(wq->name);
-	wq->name = NULL;	/* Do not wait on this queue */
-
-	wq->status = status;
-
-	if ( ! --wq->wait_ctr )	/* Is anyone still waiting for this guy? */
-		kfree(wq);
-	else
-		wake_up(&wq->queue);
-
-	return 0;
-}
-
-- 
1.7.1


  parent reply	other threads:[~2011-01-25 22:22 UTC|newest]

Thread overview: 64+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-01-25 22:17 [RFC 00/20] Proposal for remaining BKL users Arnd Bergmann
2011-01-25 22:17 ` Arnd Bergmann
2011-01-25 22:17 ` [PATCH 01/20] drm/i810: remove the BKL Arnd Bergmann
2011-01-25 22:17 ` [PATCH 02/20] drm: remove i830 driver Arnd Bergmann
2011-01-25 22:17 ` [PATCH 03/20] staging/usbip: convert to kthread Arnd Bergmann
2011-01-28 17:53   ` Max Vozeler
2011-01-28 18:48     ` Arnd Bergmann
2011-03-01 22:15     ` Arnd Bergmann
2011-01-25 22:17 ` [PATCH 04/20] staging/cx25721: serialize access to devlist Arnd Bergmann
2011-01-26 16:23   ` Palash Bandyopadhyay
2011-01-31 21:37   ` Greg KH
2011-01-25 22:17 ` [PATCH 05/20] staging/go7007: remove the BKL Arnd Bergmann
2011-01-25 22:17 ` Arnd Bergmann [this message]
2011-01-26  7:41   ` [PATCH 06/20] staging: Remove autofs3 H. Peter Anvin
2011-01-25 22:17 ` [PATCH 07/20] staging: remove smbfs Arnd Bergmann
2011-01-25 22:17 ` [PATCH 08/20] adfs: remove the big kernel lock Arnd Bergmann
2011-01-25 22:20   ` Russell King
2011-01-25 22:17 ` [PATCH 09/20] hpfs: rename big kernel lock to hpfs_lock Arnd Bergmann
2011-01-25 22:17 ` [PATCH 10/20] hpfs: replace BKL with a global mutex Arnd Bergmann
2011-01-26  0:15   ` Andi Kleen
2011-01-26  0:19   ` Andi Kleen
2011-01-26 12:48     ` [PATCH v2] hpfs: remove the BKL Arnd Bergmann
2011-01-26 12:50     ` [PATCH 10/20] hpfs: replace BKL with a global mutex Arnd Bergmann
2011-01-26 16:52       ` Andi Kleen
2011-01-27  5:01         ` Nick Piggin
2011-01-27 10:57           ` Miklos Szeredi
2011-01-25 22:17 ` [PATCH 11/20] hpfs: move to drivers/staging Arnd Bergmann
2011-02-07 16:17   ` Mikulas Patocka
2011-02-07 19:31     ` Arnd Bergmann
2011-01-25 22:17 ` [PATCH 12/20] x25: remove the BKL Arnd Bergmann
2011-01-27 10:07   ` Andrew Hendry
2011-01-27 12:17     ` Arnd Bergmann
2011-01-27 12:38       ` [PATCH v2] " Arnd Bergmann
2011-01-27 13:20         ` Eric Dumazet
2011-01-27 13:43           ` Arnd Bergmann
2011-01-25 22:17 ` [PATCH 13/20] appletalk: move to staging Arnd Bergmann
2011-01-25 22:17 ` [PATCH 14/20] staging/appletalk: remove the BKL Arnd Bergmann
2011-01-25 22:29   ` David Miller
2011-01-26 12:57     ` Arnd Bergmann
2011-01-25 22:17 ` [PATCH 15/20] ufs: " Arnd Bergmann
2011-01-26  2:30   ` Nick Bowler
2011-01-26 12:53     ` Arnd Bergmann
2011-01-27  5:47   ` Nick Piggin
2011-01-27 13:13     ` Arnd Bergmann
2011-01-25 22:17 ` [PATCH 16/20] ipx: " Arnd Bergmann
2011-01-25 22:17 ` [PATCH 17/20] tracing: don't trace " Arnd Bergmann
2011-01-25 22:28   ` Frederic Weisbecker
2011-01-25 22:17 ` [PATCH 18/20] rtmutex-tester: remove BKL tests Arnd Bergmann
2011-01-26 15:00   ` [tip:core/locking] rtmutex-tester: Remove " tip-bot for Arnd Bergmann
2011-02-22 20:57   ` [tip:irq/core] rtmutex: tester: " tip-bot for Arnd Bergmann
2011-01-25 22:17 ` [PATCH 19/20] drivers: remove extraneous includes of smp_lock.h Arnd Bergmann
2011-01-25 22:17 ` [PATCH 20/20] BKL: That's all, folks Arnd Bergmann
2011-01-26  6:19   ` Ingo Molnar
2011-01-26  8:47     ` Alan Cox
2011-01-26 11:01       ` Ingo Molnar
2011-01-26 11:22   ` Thomas Gleixner
2011-01-26  2:22 ` [RFC 00/20] Proposal for remaining BKL users Greg KH
2011-01-26  2:22   ` Greg KH
2011-01-26 11:31   ` Arnd Bergmann
2011-01-26 11:31     ` Arnd Bergmann
2011-01-26 11:58     ` Mauro Carvalho Chehab
2011-01-26 13:45       ` Arnd Bergmann
2011-01-26 13:45         ` Arnd Bergmann
2011-01-26 16:24         ` Palash Bandyopadhyay

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