quota: Move quota files into separate directory

Quota subsystem has more and more files. It's time to create a dir for it.

Signed-off-by: Jan Kara <jack@suse.cz>

1 files changed, 0 insertions, 2564 deletions

diff --git a/fs/dquot.c b/fs/dquot.c
deleted file mode 100644
index 28aa146..0000000
--- a/fs/dquot.c
+++ /dev/null
@@ -1,2564 +0,0 @@
-/*
- * Implementation of the diskquota system for the LINUX operating system. QUOTA
- * is implemented using the BSD system call interface as the means of
- * communication with the user level. This file contains the generic routines
- * called by the different filesystems on allocation of an inode or block.
- * These routines take care of the administration needed to have a consistent
- * diskquota tracking system. The ideas of both user and group quotas are based
- * on the Melbourne quota system as used on BSD derived systems. The internal
- * implementation is based on one of the several variants of the LINUX
- * inode-subsystem with added complexity of the diskquota system.
- * 
- * Author:	Marco van Wieringen <mvw@planets.elm.net>
- *
- * Fixes:   Dmitry Gorodchanin <pgmdsg@ibi.com>, 11 Feb 96
- *
- *		Revised list management to avoid races
- *		-- Bill Hawes, <whawes@star.net>, 9/98
- *
- *		Fixed races in dquot_transfer(), dqget() and dquot_alloc_...().
- *		As the consequence the locking was moved from dquot_decr_...(),
- *		dquot_incr_...() to calling functions.
- *		invalidate_dquots() now writes modified dquots.
- *		Serialized quota_off() and quota_on() for mount point.
- *		Fixed a few bugs in grow_dquots().
- *		Fixed deadlock in write_dquot() - we no longer account quotas on
- *		quota files
- *		remove_dquot_ref() moved to inode.c - it now traverses through inodes
- *		add_dquot_ref() restarts after blocking
- *		Added check for bogus uid and fixed check for group in quotactl.
- *		Jan Kara, <jack@suse.cz>, sponsored by SuSE CR, 10-11/99
- *
- *		Used struct list_head instead of own list struct
- *		Invalidation of referenced dquots is no longer possible
- *		Improved free_dquots list management
- *		Quota and i_blocks are now updated in one place to avoid races
- *		Warnings are now delayed so we won't block in critical section
- *		Write updated not to require dquot lock
- *		Jan Kara, <jack@suse.cz>, 9/2000
- *
- *		Added dynamic quota structure allocation
- *		Jan Kara <jack@suse.cz> 12/2000
- *
- *		Rewritten quota interface. Implemented new quota format and
- *		formats registering.
- *		Jan Kara, <jack@suse.cz>, 2001,2002
- *
- *		New SMP locking.
- *		Jan Kara, <jack@suse.cz>, 10/2002
- *
- *		Added journalled quota support, fix lock inversion problems
- *		Jan Kara, <jack@suse.cz>, 2003,2004
- *
- * (C) Copyright 1994 - 1997 Marco van Wieringen 
- */
-
-#include <linux/errno.h>
-#include <linux/kernel.h>
-#include <linux/fs.h>
-#include <linux/mount.h>
-#include <linux/mm.h>
-#include <linux/time.h>
-#include <linux/types.h>
-#include <linux/string.h>
-#include <linux/fcntl.h>
-#include <linux/stat.h>
-#include <linux/tty.h>
-#include <linux/file.h>
-#include <linux/slab.h>
-#include <linux/sysctl.h>
-#include <linux/init.h>
-#include <linux/module.h>
-#include <linux/proc_fs.h>
-#include <linux/security.h>
-#include <linux/kmod.h>
-#include <linux/namei.h>
-#include <linux/buffer_head.h>
-#include <linux/capability.h>
-#include <linux/quotaops.h>
-#include <linux/writeback.h> /* for inode_lock, oddly enough.. */
-#ifdef CONFIG_QUOTA_NETLINK_INTERFACE
-#include <net/netlink.h>
-#include <net/genetlink.h>
-#endif
-
-#include <asm/uaccess.h>
-
-#define __DQUOT_PARANOIA
-
-/*
- * There are three quota SMP locks. dq_list_lock protects all lists with quotas
- * and quota formats, dqstats structure containing statistics about the lists
- * dq_data_lock protects data from dq_dqb and also mem_dqinfo structures and
- * also guards consistency of dquot->dq_dqb with inode->i_blocks, i_bytes.
- * i_blocks and i_bytes updates itself are guarded by i_lock acquired directly
- * in inode_add_bytes() and inode_sub_bytes(). dq_state_lock protects
- * modifications of quota state (on quotaon and quotaoff) and readers who care
- * about latest values take it as well.
- *
- * The spinlock ordering is hence: dq_data_lock > dq_list_lock > i_lock,
- *   dq_list_lock > dq_state_lock
- *
- * Note that some things (eg. sb pointer, type, id) doesn't change during
- * the life of the dquot structure and so needn't to be protected by a lock
- *
- * Any operation working on dquots via inode pointers must hold dqptr_sem.  If
- * operation is just reading pointers from inode (or not using them at all) the
- * read lock is enough. If pointers are altered function must hold write lock
- * (these locking rules also apply for S_NOQUOTA flag in the inode - note that
- * for altering the flag i_mutex is also needed).
- *
- * Each dquot has its dq_lock mutex. Locked dquots might not be referenced
- * from inodes (dquot_alloc_space() and such don't check the dq_lock).
- * Currently dquot is locked only when it is being read to memory (or space for
- * it is being allocated) on the first dqget() and when it is being released on
- * the last dqput(). The allocation and release oparations are serialized by
- * the dq_lock and by checking the use count in dquot_release().  Write
- * operations on dquots don't hold dq_lock as they copy data under dq_data_lock
- * spinlock to internal buffers before writing.
- *
- * Lock ordering (including related VFS locks) is the following:
- *   i_mutex > dqonoff_sem > journal_lock > dqptr_sem > dquot->dq_lock >
- *   dqio_mutex
- * The lock ordering of dqptr_sem imposed by quota code is only dqonoff_sem >
- * dqptr_sem. But filesystem has to count with the fact that functions such as
- * dquot_alloc_space() acquire dqptr_sem and they usually have to be called
- * from inside a transaction to keep filesystem consistency after a crash. Also
- * filesystems usually want to do some IO on dquot from ->mark_dirty which is
- * called with dqptr_sem held.
- * i_mutex on quota files is special (it's below dqio_mutex)
- */
-
-static DEFINE_SPINLOCK(dq_list_lock);
-static DEFINE_SPINLOCK(dq_state_lock);
-DEFINE_SPINLOCK(dq_data_lock);
-EXPORT_SYMBOL(dq_data_lock);
-
-static char *quotatypes[] = INITQFNAMES;
-static struct quota_format_type *quota_formats;	/* List of registered formats */
-static struct quota_module_name module_names[] = INIT_QUOTA_MODULE_NAMES;
-
-/* SLAB cache for dquot structures */
-static struct kmem_cache *dquot_cachep;
-
-int register_quota_format(struct quota_format_type *fmt)
-{
-	spin_lock(&dq_list_lock);
-	fmt->qf_next = quota_formats;
-	quota_formats = fmt;
-	spin_unlock(&dq_list_lock);
-	return 0;
-}
-EXPORT_SYMBOL(register_quota_format);
-
-void unregister_quota_format(struct quota_format_type *fmt)
-{
-	struct quota_format_type **actqf;
-
-	spin_lock(&dq_list_lock);
-	for (actqf = &quota_formats; *actqf && *actqf != fmt; actqf = &(*actqf)->qf_next);
-	if (*actqf)
-		*actqf = (*actqf)->qf_next;
-	spin_unlock(&dq_list_lock);
-}
-EXPORT_SYMBOL(unregister_quota_format);
-
-static struct quota_format_type *find_quota_format(int id)
-{
-	struct quota_format_type *actqf;
-
-	spin_lock(&dq_list_lock);
-	for (actqf = quota_formats; actqf && actqf->qf_fmt_id != id; actqf = actqf->qf_next);
-	if (!actqf || !try_module_get(actqf->qf_owner)) {
-		int qm;
-
-		spin_unlock(&dq_list_lock);
-		
-		for (qm = 0; module_names[qm].qm_fmt_id && module_names[qm].qm_fmt_id != id; qm++);
-		if (!module_names[qm].qm_fmt_id || request_module(module_names[qm].qm_mod_name))
-			return NULL;
-
-		spin_lock(&dq_list_lock);
-		for (actqf = quota_formats; actqf && actqf->qf_fmt_id != id; actqf = actqf->qf_next);
-		if (actqf && !try_module_get(actqf->qf_owner))
-			actqf = NULL;
-	}
-	spin_unlock(&dq_list_lock);
-	return actqf;
-}
-
-static void put_quota_format(struct quota_format_type *fmt)
-{
-	module_put(fmt->qf_owner);
-}
-
-/*
- * Dquot List Management:
- * The quota code uses three lists for dquot management: the inuse_list,
- * free_dquots, and dquot_hash[] array. A single dquot structure may be
- * on all three lists, depending on its current state.
- *
- * All dquots are placed to the end of inuse_list when first created, and this
- * list is used for invalidate operation, which must look at every dquot.
- *
- * Unused dquots (dq_count == 0) are added to the free_dquots list when freed,
- * and this list is searched whenever we need an available dquot.  Dquots are
- * removed from the list as soon as they are used again, and
- * dqstats.free_dquots gives the number of dquots on the list. When
- * dquot is invalidated it's completely released from memory.
- *
- * Dquots with a specific identity (device, type and id) are placed on
- * one of the dquot_hash[] hash chains. The provides an efficient search
- * mechanism to locate a specific dquot.
- */
-
-static LIST_HEAD(inuse_list);
-static LIST_HEAD(free_dquots);
-static unsigned int dq_hash_bits, dq_hash_mask;
-static struct hlist_head *dquot_hash;
-
-struct dqstats dqstats;
-EXPORT_SYMBOL(dqstats);
-
-static inline unsigned int
-hashfn(const struct super_block *sb, unsigned int id, int type)
-{
-	unsigned long tmp;
-
-	tmp = (((unsigned long)sb>>L1_CACHE_SHIFT) ^ id) * (MAXQUOTAS - type);
-	return (tmp + (tmp >> dq_hash_bits)) & dq_hash_mask;
-}
-
-/*
- * Following list functions expect dq_list_lock to be held
- */
-static inline void insert_dquot_hash(struct dquot *dquot)
-{
-	struct hlist_head *head = dquot_hash + hashfn(dquot->dq_sb, dquot->dq_id, dquot->dq_type);
-	hlist_add_head(&dquot->dq_hash, head);
-}
-
-static inline void remove_dquot_hash(struct dquot *dquot)
-{
-	hlist_del_init(&dquot->dq_hash);
-}
-
-static inline struct dquot *find_dquot(unsigned int hashent, struct super_block *sb, unsigned int id, int type)
-{
-	struct hlist_node *node;
-	struct dquot *dquot;
-
-	hlist_for_each (node, dquot_hash+hashent) {
-		dquot = hlist_entry(node, struct dquot, dq_hash);
-		if (dquot->dq_sb == sb && dquot->dq_id == id && dquot->dq_type == type)
-			return dquot;
-	}
-	return NODQUOT;
-}
-
-/* Add a dquot to the tail of the free list */
-static inline void put_dquot_last(struct dquot *dquot)
-{
-	list_add_tail(&dquot->dq_free, &free_dquots);
-	dqstats.free_dquots++;
-}
-
-static inline void remove_free_dquot(struct dquot *dquot)
-{
-	if (list_empty(&dquot->dq_free))
-		return;
-	list_del_init(&dquot->dq_free);
-	dqstats.free_dquots--;
-}
-
-static inline void put_inuse(struct dquot *dquot)
-{
-	/* We add to the back of inuse list so we don't have to restart
-	 * when traversing this list and we block */
-	list_add_tail(&dquot->dq_inuse, &inuse_list);
-	dqstats.allocated_dquots++;
-}
-
-static inline void remove_inuse(struct dquot *dquot)
-{
-	dqstats.allocated_dquots--;
-	list_del(&dquot->dq_inuse);
-}
-/*
- * End of list functions needing dq_list_lock
- */
-
-static void wait_on_dquot(struct dquot *dquot)
-{
-	mutex_lock(&dquot->dq_lock);
-	mutex_unlock(&dquot->dq_lock);
-}
-
-static inline int dquot_dirty(struct dquot *dquot)
-{
-	return test_bit(DQ_MOD_B, &dquot->dq_flags);
-}
-
-static inline int mark_dquot_dirty(struct dquot *dquot)
-{
-	return dquot->dq_sb->dq_op->mark_dirty(dquot);
-}
-
-int dquot_mark_dquot_dirty(struct dquot *dquot)
-{
-	spin_lock(&dq_list_lock);
-	if (!test_and_set_bit(DQ_MOD_B, &dquot->dq_flags))
-		list_add(&dquot->dq_dirty, &sb_dqopt(dquot->dq_sb)->
-				info[dquot->dq_type].dqi_dirty_list);
-	spin_unlock(&dq_list_lock);
-	return 0;
-}
-EXPORT_SYMBOL(dquot_mark_dquot_dirty);
-
-/* This function needs dq_list_lock */
-static inline int clear_dquot_dirty(struct dquot *dquot)
-{
-	if (!test_and_clear_bit(DQ_MOD_B, &dquot->dq_flags))
-		return 0;
-	list_del_init(&dquot->dq_dirty);
-	return 1;
-}
-
-void mark_info_dirty(struct super_block *sb, int type)
-{
-	set_bit(DQF_INFO_DIRTY_B, &sb_dqopt(sb)->info[type].dqi_flags);
-}
-EXPORT_SYMBOL(mark_info_dirty);
-
-/*
- *	Read dquot from disk and alloc space for it
- */
-
-int dquot_acquire(struct dquot *dquot)
-{
-	int ret = 0, ret2 = 0;
-	struct quota_info *dqopt = sb_dqopt(dquot->dq_sb);
-
-	mutex_lock(&dquot->dq_lock);
-	mutex_lock(&dqopt->dqio_mutex);
-	if (!test_bit(DQ_READ_B, &dquot->dq_flags))
-		ret = dqopt->ops[dquot->dq_type]->read_dqblk(dquot);
-	if (ret < 0)
-		goto out_iolock;
-	set_bit(DQ_READ_B, &dquot->dq_flags);
-	/* Instantiate dquot if needed */
-	if (!test_bit(DQ_ACTIVE_B, &dquot->dq_flags) && !dquot->dq_off) {
-		ret = dqopt->ops[dquot->dq_type]->commit_dqblk(dquot);
-		/* Write the info if needed */
-		if (info_dirty(&dqopt->info[dquot->dq_type]))
-			ret2 = dqopt->ops[dquot->dq_type]->write_file_info(dquot->dq_sb, dquot->dq_type);
-		if (ret < 0)
-			goto out_iolock;
-		if (ret2 < 0) {
-			ret = ret2;
-			goto out_iolock;
-		}
-	}
-	set_bit(DQ_ACTIVE_B, &dquot->dq_flags);
-out_iolock:
-	mutex_unlock(&dqopt->dqio_mutex);
-	mutex_unlock(&dquot->dq_lock);
-	return ret;
-}
-EXPORT_SYMBOL(dquot_acquire);
-
-/*
- *	Write dquot to disk
- */
-int dquot_commit(struct dquot *dquot)
-{
-	int ret = 0, ret2 = 0;
-	struct quota_info *dqopt = sb_dqopt(dquot->dq_sb);
-
-	mutex_lock(&dqopt->dqio_mutex);
-	spin_lock(&dq_list_lock);
-	if (!clear_dquot_dirty(dquot)) {
-		spin_unlock(&dq_list_lock);
-		goto out_sem;
-	}
-	spin_unlock(&dq_list_lock);
-	/* Inactive dquot can be only if there was error during read/init
-	 * => we have better not writing it */
-	if (test_bit(DQ_ACTIVE_B, &dquot->dq_flags)) {
-		ret = dqopt->ops[dquot->dq_type]->commit_dqblk(dquot);
-		if (info_dirty(&dqopt->info[dquot->dq_type]))
-			ret2 = dqopt->ops[dquot->dq_type]->write_file_info(dquot->dq_sb, dquot->dq_type);
-		if (ret >= 0)
-			ret = ret2;
-	}
-out_sem:
-	mutex_unlock(&dqopt->dqio_mutex);
-	return ret;
-}
-EXPORT_SYMBOL(dquot_commit);
-
-/*
- *	Release dquot
- */
-int dquot_release(struct dquot *dquot)
-{
-	int ret = 0, ret2 = 0;
-	struct quota_info *dqopt = sb_dqopt(dquot->dq_sb);
-
-	mutex_lock(&dquot->dq_lock);
-	/* Check whether we are not racing with some other dqget() */
-	if (atomic_read(&dquot->dq_count) > 1)
-		goto out_dqlock;
-	mutex_lock(&dqopt->dqio_mutex);
-	if (dqopt->ops[dquot->dq_type]->release_dqblk) {
-		ret = dqopt->ops[dquot->dq_type]->release_dqblk(dquot);
-		/* Write the info */
-		if (info_dirty(&dqopt->info[dquot->dq_type]))
-			ret2 = dqopt->ops[dquot->dq_type]->write_file_info(dquot->dq_sb, dquot->dq_type);
-		if (ret >= 0)
-			ret = ret2;
-	}
-	clear_bit(DQ_ACTIVE_B, &dquot->dq_flags);
-	mutex_unlock(&dqopt->dqio_mutex);
-out_dqlock:
-	mutex_unlock(&dquot->dq_lock);
-	return ret;
-}
-EXPORT_SYMBOL(dquot_release);
-
-void dquot_destroy(struct dquot *dquot)
-{
-	kmem_cache_free(dquot_cachep, dquot);
-}
-EXPORT_SYMBOL(dquot_destroy);
-
-static inline void do_destroy_dquot(struct dquot *dquot)
-{
-	dquot->dq_sb->dq_op->destroy_dquot(dquot);
-}
-
-/* Invalidate all dquots on the list. Note that this function is called after
- * quota is disabled and pointers from inodes removed so there cannot be new
- * quota users. There can still be some users of quotas due to inodes being
- * just deleted or pruned by prune_icache() (those are not attached to any
- * list) or parallel quotactl call. We have to wait for such users.
- */
-static void invalidate_dquots(struct super_block *sb, int type)
-{
-	struct dquot *dquot, *tmp;
-
-restart:
-	spin_lock(&dq_list_lock);
-	list_for_each_entry_safe(dquot, tmp, &inuse_list, dq_inuse) {
-		if (dquot->dq_sb != sb)
-			continue;
-		if (dquot->dq_type != type)
-			continue;
-		/* Wait for dquot users */
-		if (atomic_read(&dquot->dq_count)) {
-			DEFINE_WAIT(wait);
-
-			atomic_inc(&dquot->dq_count);
-			prepare_to_wait(&dquot->dq_wait_unused, &wait,
-					TASK_UNINTERRUPTIBLE);
-			spin_unlock(&dq_list_lock);
-			/* Once dqput() wakes us up, we know it's time to free
-			 * the dquot.
-			 * IMPORTANT: we rely on the fact that there is always
-			 * at most one process waiting for dquot to free.
-			 * Otherwise dq_count would be > 1 and we would never
-			 * wake up.
-			 */
-			if (atomic_read(&dquot->dq_count) > 1)
-				schedule();
-			finish_wait(&dquot->dq_wait_unused, &wait);
-			dqput(dquot);
-			/* At this moment dquot() need not exist (it could be
-			 * reclaimed by prune_dqcache(). Hence we must
-			 * restart. */
-			goto restart;
-		}
-		/*
-		 * Quota now has no users and it has been written on last
-		 * dqput()
-		 */
-		remove_dquot_hash(dquot);
-		remove_free_dquot(dquot);
-		remove_inuse(dquot);
-		do_destroy_dquot(dquot);
-	}
-	spin_unlock(&dq_list_lock);
-}
-
-/* Call callback for every active dquot on given filesystem */
-int dquot_scan_active(struct super_block *sb,
-		      int (*fn)(struct dquot *dquot, unsigned long priv),
-		      unsigned long priv)
-{
-	struct dquot *dquot, *old_dquot = NULL;
-	int ret = 0;
-
-	mutex_lock(&sb_dqopt(sb)->dqonoff_mutex);
-	spin_lock(&dq_list_lock);
-	list_for_each_entry(dquot, &inuse_list, dq_inuse) {
-		if (!test_bit(DQ_ACTIVE_B, &dquot->dq_flags))
-			continue;
-		if (dquot->dq_sb != sb)
-			continue;
-		/* Now we have active dquot so we can just increase use count */
-		atomic_inc(&dquot->dq_count);
-		dqstats.lookups++;
-		spin_unlock(&dq_list_lock);
-		dqput(old_dquot);
-		old_dquot = dquot;
-		ret = fn(dquot, priv);
-		if (ret < 0)
-			goto out;
-		spin_lock(&dq_list_lock);
-		/* We are safe to continue now because our dquot could not
-		 * be moved out of the inuse list while we hold the reference */
-	}
-	spin_unlock(&dq_list_lock);
-out:
-	dqput(old_dquot);
-	mutex_unlock(&sb_dqopt(sb)->dqonoff_mutex);
-	return ret;
-}
-EXPORT_SYMBOL(dquot_scan_active);
-
-int vfs_quota_sync(struct super_block *sb, int type)
-{
-	struct list_head *dirty;
-	struct dquot *dquot;
-	struct quota_info *dqopt = sb_dqopt(sb);
-	int cnt;
-
-	mutex_lock(&dqopt->dqonoff_mutex);
-	for (cnt = 0; cnt < MAXQUOTAS; cnt++) {
-		if (type != -1 && cnt != type)
-			continue;
-		if (!sb_has_quota_active(sb, cnt))
-			continue;
-		spin_lock(&dq_list_lock);
-		dirty = &dqopt->info[cnt].dqi_dirty_list;
-		while (!list_empty(dirty)) {
-			dquot = list_first_entry(dirty, struct dquot, dq_dirty);
-			/* Dirty and inactive can be only bad dquot... */
-			if (!test_bit(DQ_ACTIVE_B, &dquot->dq_flags)) {
-				clear_dquot_dirty(dquot);
-				continue;
-			}
-			/* Now we have active dquot from which someone is
- 			 * holding reference so we can safely just increase
-			 * use count */
-			atomic_inc(&dquot->dq_count);
-			dqstats.lookups++;
-			spin_unlock(&dq_list_lock);
-			sb->dq_op->write_dquot(dquot);
-			dqput(dquot);
-			spin_lock(&dq_list_lock);
-		}
-		spin_unlock(&dq_list_lock);
-	}
-
-	for (cnt = 0; cnt < MAXQUOTAS; cnt++)
-		if ((cnt == type || type == -1) && sb_has_quota_active(sb, cnt)
-		    && info_dirty(&dqopt->info[cnt]))
-			sb->dq_op->write_info(sb, cnt);
-	spin_lock(&dq_list_lock);
-	dqstats.syncs++;
-	spin_unlock(&dq_list_lock);
-	mutex_unlock(&dqopt->dqonoff_mutex);
-
-	return 0;
-}
-EXPORT_SYMBOL(vfs_quota_sync);
-
-/* Free unused dquots from cache */
-static void prune_dqcache(int count)
-{
-	struct list_head *head;
-	struct dquot *dquot;
-
-	head = free_dquots.prev;
-	while (head != &free_dquots && count) {
-		dquot = list_entry(head, struct dquot, dq_free);
-		remove_dquot_hash(dquot);
-		remove_free_dquot(dquot);
-		remove_inuse(dquot);
-		do_destroy_dquot(dquot);
-		count--;
-		head = free_dquots.prev;
-	}
-}
-
-/*
- * This is called from kswapd when we think we need some
- * more memory
- */
-
-static int shrink_dqcache_memory(int nr, gfp_t gfp_mask)
-{
-	if (nr) {
-		spin_lock(&dq_list_lock);
-		prune_dqcache(nr);
-		spin_unlock(&dq_list_lock);
-	}
-	return (dqstats.free_dquots / 100) * sysctl_vfs_cache_pressure;
-}
-
-static struct shrinker dqcache_shrinker = {
-	.shrink = shrink_dqcache_memory,
-	.seeks = DEFAULT_SEEKS,
-};
-
-/*
- * Put reference to dquot
- * NOTE: If you change this function please check whether dqput_blocks() works right...
- */
-void dqput(struct dquot *dquot)
-{
-	int ret;
-
-	if (!dquot)
-		return;
-#ifdef __DQUOT_PARANOIA
-	if (!atomic_read(&dquot->dq_count)) {
-		printk("VFS: dqput: trying to free free dquot\n");
-		printk("VFS: device %s, dquot of %s %d\n",
-			dquot->dq_sb->s_id,
-			quotatypes[dquot->dq_type],
-			dquot->dq_id);
-		BUG();
-	}
-#endif
-	
-	spin_lock(&dq_list_lock);
-	dqstats.drops++;
-	spin_unlock(&dq_list_lock);
-we_slept:
-	spin_lock(&dq_list_lock);
-	if (atomic_read(&dquot->dq_count) > 1) {
-		/* We have more than one user... nothing to do */
-		atomic_dec(&dquot->dq_count);
-		/* Releasing dquot during quotaoff phase? */
-		if (!sb_has_quota_active(dquot->dq_sb, dquot->dq_type) &&
-		    atomic_read(&dquot->dq_count) == 1)
-			wake_up(&dquot->dq_wait_unused);
-		spin_unlock(&dq_list_lock);
-		return;
-	}
-	/* Need to release dquot? */
-	if (test_bit(DQ_ACTIVE_B, &dquot->dq_flags) && dquot_dirty(dquot)) {
-		spin_unlock(&dq_list_lock);
-		/* Commit dquot before releasing */
-		ret = dquot->dq_sb->dq_op->write_dquot(dquot);
-		if (ret < 0) {
-			printk(KERN_ERR "VFS: cannot write quota structure on "
-				"device %s (error %d). Quota may get out of "
-				"sync!\n", dquot->dq_sb->s_id, ret);
-			/*
-			 * We clear dirty bit anyway, so that we avoid
-			 * infinite loop here
-			 */
-			spin_lock(&dq_list_lock);
-			clear_dquot_dirty(dquot);
-			spin_unlock(&dq_list_lock);
-		}
-		goto we_slept;
-	}
-	/* Clear flag in case dquot was inactive (something bad happened) */
-	clear_dquot_dirty(dquot);
-	if (test_bit(DQ_ACTIVE_B, &dquot->dq_flags)) {
-		spin_unlock(&dq_list_lock);
-		dquot->dq_sb->dq_op->release_dquot(dquot);
-		goto we_slept;
-	}
-	atomic_dec(&dquot->dq_count);
-#ifdef __DQUOT_PARANOIA
-	/* sanity check */
-	BUG_ON(!list_empty(&dquot->dq_free));
-#endif
-	put_dquot_last(dquot);
-	spin_unlock(&dq_list_lock);
-}
-EXPORT_SYMBOL(dqput);
-
-struct dquot *dquot_alloc(struct super_block *sb, int type)
-{
-	return kmem_cache_zalloc(dquot_cachep, GFP_NOFS);
-}
-EXPORT_SYMBOL(dquot_alloc);
-
-static struct dquot *get_empty_dquot(struct super_block *sb, int type)
-{
-	struct dquot *dquot;
-
-	dquot = sb->dq_op->alloc_dquot(sb, type);
-	if(!dquot)
-		return NODQUOT;
-
-	mutex_init(&dquot->dq_lock);
-	INIT_LIST_HEAD(&dquot->dq_free);
-	INIT_LIST_HEAD(&dquot->dq_inuse);
-	INIT_HLIST_NODE(&dquot->dq_hash);
-	INIT_LIST_HEAD(&dquot->dq_dirty);
-	init_waitqueue_head(&dquot->dq_wait_unused);
-	dquot->dq_sb = sb;
-	dquot->dq_type = type;
-	atomic_set(&dquot->dq_count, 1);
-
-	return dquot;
-}
-
-/*
- * Get reference to dquot
- *
- * Locking is slightly tricky here. We are guarded from parallel quotaoff()
- * destroying our dquot by:
- *   a) checking for quota flags under dq_list_lock and
- *   b) getting a reference to dquot before we release dq_list_lock
- */
-struct dquot *dqget(struct super_block *sb, unsigned int id, int type)
-{
-	unsigned int hashent = hashfn(sb, id, type);
-	struct dquot *dquot = NODQUOT, *empty = NODQUOT;
-
-        if (!sb_has_quota_active(sb, type))
-		return NODQUOT;
-we_slept:
-	spin_lock(&dq_list_lock);
-	spin_lock(&dq_state_lock);
-	if (!sb_has_quota_active(sb, type)) {
-		spin_unlock(&dq_state_lock);
-		spin_unlock(&dq_list_lock);
-		goto out;
-	}
-	spin_unlock(&dq_state_lock);
-
-	if ((dquot = find_dquot(hashent, sb, id, type)) == NODQUOT) {
-		if (empty == NODQUOT) {
-			spin_unlock(&dq_list_lock);
-			if ((empty = get_empty_dquot(sb, type)) == NODQUOT)
-				schedule();	/* Try to wait for a moment... */
-			goto we_slept;
-		}
-		dquot = empty;
-		empty = NODQUOT;
-		dquot->dq_id = id;
-		/* all dquots go on the inuse_list */
-		put_inuse(dquot);
-		/* hash it first so it can be found */
-		insert_dquot_hash(dquot);
-		dqstats.lookups++;
-		spin_unlock(&dq_list_lock);
-	} else {
-		if (!atomic_read(&dquot->dq_count))
-			remove_free_dquot(dquot);
-		atomic_inc(&dquot->dq_count);
-		dqstats.cache_hits++;
-		dqstats.lookups++;
-		spin_unlock(&dq_list_lock);
-	}
-	/* Wait for dq_lock - after this we know that either dquot_release() is already
-	 * finished or it will be canceled due to dq_count > 1 test */
-	wait_on_dquot(dquot);
-	/* Read the dquot and instantiate it (everything done only if needed) */
-	if (!test_bit(DQ_ACTIVE_B, &dquot->dq_flags) && sb->dq_op->acquire_dquot(dquot) < 0) {
-		dqput(dquot);
-		dquot = NODQUOT;
-		goto out;
-	}
-#ifdef __DQUOT_PARANOIA
-	BUG_ON(!dquot->dq_sb);	/* Has somebody invalidated entry under us? */
-#endif
-out:
-	if (empty)
-		do_destroy_dquot(empty);
-
-	return dquot;
-}
-EXPORT_SYMBOL(dqget);
-
-static int dqinit_needed(struct inode *inode, int type)
-{
-	int cnt;
-
-	if (IS_NOQUOTA(inode))
-		return 0;
-	if (type != -1)
-		return inode->i_dquot[type] == NODQUOT;
-	for (cnt = 0; cnt < MAXQUOTAS; cnt++)
-		if (inode->i_dquot[cnt] == NODQUOT)
-			return 1;
-	return 0;
-}
-
-/* This routine is guarded by dqonoff_mutex mutex */
-static void add_dquot_ref(struct super_block *sb, int type)
-{
-	struct inode *inode, *old_inode = NULL;
-
-	spin_lock(&inode_lock);
-	list_for_each_entry(inode, &sb->s_inodes, i_sb_list) {
-		if (!atomic_read(&inode->i_writecount))
-			continue;
-		if (!dqinit_needed(inode, type))
-			continue;
-		if (inode->i_state & (I_FREEING|I_WILL_FREE))
-			continue;
-
-		__iget(inode);
-		spin_unlock(&inode_lock);
-
-		iput(old_inode);
-		sb->dq_op->initialize(inode, type);
-		/* We hold a reference to 'inode' so it couldn't have been
-		 * removed from s_inodes list while we dropped the inode_lock.
-		 * We cannot iput the inode now as we can be holding the last
-		 * reference and we cannot iput it under inode_lock. So we
-		 * keep the reference and iput it later. */
-		old_inode = inode;
-		spin_lock(&inode_lock);
-	}
-	spin_unlock(&inode_lock);
-	iput(old_inode);
-}
-
-/* Return 0 if dqput() won't block (note that 1 doesn't necessarily mean blocking) */
-static inline int dqput_blocks(struct dquot *dquot)
-{
-	if (atomic_read(&dquot->dq_count) <= 1)
-		return 1;
-	return 0;
-}
-
-/* Remove references to dquots from inode - add dquot to list for freeing if needed */
-/* We can't race with anybody because we hold dqptr_sem for writing... */
-static int remove_inode_dquot_ref(struct inode *inode, int type,
-				  struct list_head *tofree_head)
-{
-	struct dquot *dquot = inode->i_dquot[type];
-
-	inode->i_dquot[type] = NODQUOT;
-	if (dquot != NODQUOT) {
-		if (dqput_blocks(dquot)) {
-#ifdef __DQUOT_PARANOIA
-			if (atomic_read(&dquot->dq_count) != 1)
-				printk(KERN_WARNING "VFS: Adding dquot with dq_count %d to dispose list.\n", atomic_read(&dquot->dq_count));
-#endif
-			spin_lock(&dq_list_lock);
-			list_add(&dquot->dq_free, tofree_head);	/* As dquot must have currently users it can't be on the free list... */
-			spin_unlock(&dq_list_lock);
-			return 1;
-		}
-		else
-			dqput(dquot);   /* We have guaranteed we won't block */
-	}
-	return 0;
-}
-
-/* Free list of dquots - called from inode.c */
-/* dquots are removed from inodes, no new references can be got so we are the only ones holding reference */
-static void put_dquot_list(struct list_head *tofree_head)
-{
-	struct list_head *act_head;
-	struct dquot *dquot;
-
-	act_head = tofree_head->next;
-	/* So now we have dquots on the list... Just free them */
-	while (act_head != tofree_head) {
-		dquot = list_entry(act_head, struct dquot, dq_free);
-		act_head = act_head->next;
-		list_del_init(&dquot->dq_free);	/* Remove dquot from the list so we won't have problems... */
-		dqput(dquot);
-	}
-}
-
-static void remove_dquot_ref(struct super_block *sb, int type,
-		struct list_head *tofree_head)
-{
-	struct inode *inode;
-
-	spin_lock(&inode_lock);
-	list_for_each_entry(inode, &sb->s_inodes, i_sb_list) {
-		if (!IS_NOQUOTA(inode))
-			remove_inode_dquot_ref(inode, type, tofree_head);
-	}
-	spin_unlock(&inode_lock);
-}
-
-/* Gather all references from inodes and drop them */
-static void drop_dquot_ref(struct super_block *sb, int type)
-{
-	LIST_HEAD(tofree_head);
-
-	if (sb->dq_op) {
-		down_write(&sb_dqopt(sb)->dqptr_sem);
-		remove_dquot_ref(sb, type, &tofree_head);
-		up_write(&sb_dqopt(sb)->dqptr_sem);
-		put_dquot_list(&tofree_head);
-	}
-}
-
-static inline void dquot_incr_inodes(struct dquot *dquot, qsize_t number)
-{
-	dquot->dq_dqb.dqb_curinodes += number;
-}
-
-static inline void dquot_incr_space(struct dquot *dquot, qsize_t number)
-{
-	dquot->dq_dqb.dqb_curspace += number;
-}
-
-static inline void dquot_resv_space(struct dquot *dquot, qsize_t number)
-{
-	dquot->dq_dqb.dqb_rsvspace += number;
-}
-
-/*
- * Claim reserved quota space
- */
-static void dquot_claim_reserved_space(struct dquot *dquot,
-						qsize_t number)
-{
-	WARN_ON(dquot->dq_dqb.dqb_rsvspace < number);
-	dquot->dq_dqb.dqb_curspace += number;
-	dquot->dq_dqb.dqb_rsvspace -= number;
-}
-
-static inline
-void dquot_free_reserved_space(struct dquot *dquot, qsize_t number)
-{
-	dquot->dq_dqb.dqb_rsvspace -= number;
-}
-
-static inline void dquot_decr_inodes(struct dquot *dquot, qsize_t number)
-{
-	if (sb_dqopt(dquot->dq_sb)->flags & DQUOT_NEGATIVE_USAGE ||
-	    dquot->dq_dqb.dqb_curinodes >= number)
-		dquot->dq_dqb.dqb_curinodes -= number;
-	else
-		dquot->dq_dqb.dqb_curinodes = 0;
-	if (dquot->dq_dqb.dqb_curinodes <= dquot->dq_dqb.dqb_isoftlimit)
-		dquot->dq_dqb.dqb_itime = (time_t) 0;
-	clear_bit(DQ_INODES_B, &dquot->dq_flags);
-}
-
-static inline void dquot_decr_space(struct dquot *dquot, qsize_t number)
-{
-	if (sb_dqopt(dquot->dq_sb)->flags & DQUOT_NEGATIVE_USAGE ||
-	    dquot->dq_dqb.dqb_curspace >= number)
-		dquot->dq_dqb.dqb_curspace -= number;
-	else
-		dquot->dq_dqb.dqb_curspace = 0;
-	if (dquot->dq_dqb.dqb_curspace <= dquot->dq_dqb.dqb_bsoftlimit)
-		dquot->dq_dqb.dqb_btime = (time_t) 0;
-	clear_bit(DQ_BLKS_B, &dquot->dq_flags);
-}
-
-static int warning_issued(struct dquot *dquot, const int warntype)
-{
-	int flag = (warntype == QUOTA_NL_BHARDWARN ||
-		warntype == QUOTA_NL_BSOFTLONGWARN) ? DQ_BLKS_B :
-		((warntype == QUOTA_NL_IHARDWARN ||
-		warntype == QUOTA_NL_ISOFTLONGWARN) ? DQ_INODES_B : 0);
-
-	if (!flag)
-		return 0;
-	return test_and_set_bit(flag, &dquot->dq_flags);
-}
-
-#ifdef CONFIG_PRINT_QUOTA_WARNING
-static int flag_print_warnings = 1;
-
-static inline int need_print_warning(struct dquot *dquot)
-{
-	if (!flag_print_warnings)
-		return 0;
-
-	switch (dquot->dq_type) {
-		case USRQUOTA:
-			return current_fsuid() == dquot->dq_id;
-		case GRPQUOTA:
-			return in_group_p(dquot->dq_id);
-	}
-	return 0;
-}
-
-/* Print warning to user which exceeded quota */
-static void print_warning(struct dquot *dquot, const int warntype)
-{
-	char *msg = NULL;
-	struct tty_struct *tty;
-
-	if (warntype == QUOTA_NL_IHARDBELOW ||
-	    warntype == QUOTA_NL_ISOFTBELOW ||
-	    warntype == QUOTA_NL_BHARDBELOW ||
-	    warntype == QUOTA_NL_BSOFTBELOW || !need_print_warning(dquot))
-		return;
-
-	tty = get_current_tty();
-	if (!tty)
-		return;
-	tty_write_message(tty, dquot->dq_sb->s_id);
-	if (warntype == QUOTA_NL_ISOFTWARN || warntype == QUOTA_NL_BSOFTWARN)
-		tty_write_message(tty, ": warning, ");
-	else
-		tty_write_message(tty, ": write failed, ");
-	tty_write_message(tty, quotatypes[dquot->dq_type]);
-	switch (warntype) {
-		case QUOTA_NL_IHARDWARN:
-			msg = " file limit reached.\r\n";
-			break;
-		case QUOTA_NL_ISOFTLONGWARN:
-			msg = " file quota exceeded too long.\r\n";
-			break;
-		case QUOTA_NL_ISOFTWARN:
-			msg = " file quota exceeded.\r\n";
-			break;
-		case QUOTA_NL_BHARDWARN:
-			msg = " block limit reached.\r\n";
-			break;
-		case QUOTA_NL_BSOFTLONGWARN:
-			msg = " block quota exceeded too long.\r\n";
-			break;
-		case QUOTA_NL_BSOFTWARN:
-			msg = " block quota exceeded.\r\n";
-			break;
-	}
-	tty_write_message(tty, msg);
-	tty_kref_put(tty);
-}
-#endif
-
-#ifdef CONFIG_QUOTA_NETLINK_INTERFACE
-
-/* Netlink family structure for quota */
-static struct genl_family quota_genl_family = {
-	.id = GENL_ID_GENERATE,
-	.hdrsize = 0,
-	.name = "VFS_DQUOT",
-	.version = 1,
-	.maxattr = QUOTA_NL_A_MAX,
-};
-
-/* Send warning to userspace about user which exceeded quota */
-static void send_warning(const struct dquot *dquot, const char warntype)
-{
-	static atomic_t seq;
-	struct sk_buff *skb;
-	void *msg_head;
-	int ret;
-	int msg_size = 4 * nla_total_size(sizeof(u32)) +
-		       2 * nla_total_size(sizeof(u64));
-
-	/* We have to allocate using GFP_NOFS as we are called from a
-	 * filesystem performing write and thus further recursion into
-	 * the fs to free some data could cause deadlocks. */
-	skb = genlmsg_new(msg_size, GFP_NOFS);
-	if (!skb) {
-		printk(KERN_ERR
-		  "VFS: Not enough memory to send quota warning.\n");
-		return;
-	}
-	msg_head = genlmsg_put(skb, 0, atomic_add_return(1, &seq),
-			&quota_genl_family, 0, QUOTA_NL_C_WARNING);
-	if (!msg_head) {
-		printk(KERN_ERR
-		  "VFS: Cannot store netlink header in quota warning.\n");
-		goto err_out;
-	}
-	ret = nla_put_u32(skb, QUOTA_NL_A_QTYPE, dquot->dq_type);
-	if (ret)
-		goto attr_err_out;
-	ret = nla_put_u64(skb, QUOTA_NL_A_EXCESS_ID, dquot->dq_id);
-	if (ret)
-		goto attr_err_out;
-	ret = nla_put_u32(skb, QUOTA_NL_A_WARNING, warntype);
-	if (ret)
-		goto attr_err_out;
-	ret = nla_put_u32(skb, QUOTA_NL_A_DEV_MAJOR,
-		MAJOR(dquot->dq_sb->s_dev));
-	if (ret)
-		goto attr_err_out;
-	ret = nla_put_u32(skb, QUOTA_NL_A_DEV_MINOR,
-		MINOR(dquot->dq_sb->s_dev));
-	if (ret)
-		goto attr_err_out;
-	ret = nla_put_u64(skb, QUOTA_NL_A_CAUSED_ID, current_uid());
-	if (ret)
-		goto attr_err_out;
-	genlmsg_end(skb, msg_head);
-
-	ret = genlmsg_multicast(skb, 0, quota_genl_family.id, GFP_NOFS);
-	if (ret < 0 && ret != -ESRCH)
-		printk(KERN_ERR
-			"VFS: Failed to send notification message: %d\n", ret);
-	return;
-attr_err_out:
-	printk(KERN_ERR "VFS: Not enough space to compose quota message!\n");
-err_out:
-	kfree_skb(skb);
-}
-#endif
-/*
- * Write warnings to the console and send warning messages over netlink.
- *
- * Note that this function can sleep.
- */
-static inline void flush_warnings(struct dquot * const *dquots, char *warntype)
-{
-	int i;
-
-	for (i = 0; i < MAXQUOTAS; i++)
-		if (dquots[i] != NODQUOT && warntype[i] != QUOTA_NL_NOWARN &&
-		    !warning_issued(dquots[i], warntype[i])) {
-#ifdef CONFIG_PRINT_QUOTA_WARNING
-			print_warning(dquots[i], warntype[i]);
-#endif
-#ifdef CONFIG_QUOTA_NETLINK_INTERFACE
-			send_warning(dquots[i], warntype[i]);
-#endif
-		}
-}
-
-static inline char ignore_hardlimit(struct dquot *dquot)
-{
-	struct mem_dqinfo *info = &sb_dqopt(dquot->dq_sb)->info[dquot->dq_type];
-
-	return capable(CAP_SYS_RESOURCE) &&
-	    (info->dqi_format->qf_fmt_id != QFMT_VFS_OLD || !(info->dqi_flags & V1_DQF_RSQUASH));
-}
-
-/* needs dq_data_lock */
-static int check_idq(struct dquot *dquot, qsize_t inodes, char *warntype)
-{
-	*warntype = QUOTA_NL_NOWARN;
-	if (!sb_has_quota_limits_enabled(dquot->dq_sb, dquot->dq_type) ||
-	    test_bit(DQ_FAKE_B, &dquot->dq_flags))
-		return QUOTA_OK;
-
-	if (dquot->dq_dqb.dqb_ihardlimit &&
-	   (dquot->dq_dqb.dqb_curinodes + inodes) > dquot->dq_dqb.dqb_ihardlimit &&
-            !ignore_hardlimit(dquot)) {
-		*warntype = QUOTA_NL_IHARDWARN;
-		return NO_QUOTA;
-	}
-
-	if (dquot->dq_dqb.dqb_isoftlimit &&
-	   (dquot->dq_dqb.dqb_curinodes + inodes) > dquot->dq_dqb.dqb_isoftlimit &&
-	    dquot->dq_dqb.dqb_itime && get_seconds() >= dquot->dq_dqb.dqb_itime &&
-            !ignore_hardlimit(dquot)) {
-		*warntype = QUOTA_NL_ISOFTLONGWARN;
-		return NO_QUOTA;
-	}
-
-	if (dquot->dq_dqb.dqb_isoftlimit &&
-	   (dquot->dq_dqb.dqb_curinodes + inodes) > dquot->dq_dqb.dqb_isoftlimit &&
-	    dquot->dq_dqb.dqb_itime == 0) {
-		*warntype = QUOTA_NL_ISOFTWARN;
-		dquot->dq_dqb.dqb_itime = get_seconds() + sb_dqopt(dquot->dq_sb)->info[dquot->dq_type].dqi_igrace;
-	}
-
-	return QUOTA_OK;
-}
-
-/* needs dq_data_lock */
-static int check_bdq(struct dquot *dquot, qsize_t space, int prealloc, char *warntype)
-{
-	qsize_t tspace;
-
-	*warntype = QUOTA_NL_NOWARN;
-	if (!sb_has_quota_limits_enabled(dquot->dq_sb, dquot->dq_type) ||
-	    test_bit(DQ_FAKE_B, &dquot->dq_flags))
-		return QUOTA_OK;
-
-	tspace = dquot->dq_dqb.dqb_curspace + dquot->dq_dqb.dqb_rsvspace
-		+ space;
-
-	if (dquot->dq_dqb.dqb_bhardlimit &&
-	    tspace > dquot->dq_dqb.dqb_bhardlimit &&
-            !ignore_hardlimit(dquot)) {
-		if (!prealloc)
-			*warntype = QUOTA_NL_BHARDWARN;
-		return NO_QUOTA;
-	}
-
-	if (dquot->dq_dqb.dqb_bsoftlimit &&
-	    tspace > dquot->dq_dqb.dqb_bsoftlimit &&
-	    dquot->dq_dqb.dqb_btime && get_seconds() >= dquot->dq_dqb.dqb_btime &&
-            !ignore_hardlimit(dquot)) {
-		if (!prealloc)
-			*warntype = QUOTA_NL_BSOFTLONGWARN;
-		return NO_QUOTA;
-	}
-
-	if (dquot->dq_dqb.dqb_bsoftlimit &&
-	    tspace > dquot->dq_dqb.dqb_bsoftlimit &&
-	    dquot->dq_dqb.dqb_btime == 0) {
-		if (!prealloc) {
-			*warntype = QUOTA_NL_BSOFTWARN;
-			dquot->dq_dqb.dqb_btime = get_seconds() + sb_dqopt(dquot->dq_sb)->info[dquot->dq_type].dqi_bgrace;
-		}
-		else
-			/*
-			 * We don't allow preallocation to exceed softlimit so exceeding will
-			 * be always printed
-			 */
-			return NO_QUOTA;
-	}
-
-	return QUOTA_OK;
-}
-
-static int info_idq_free(struct dquot *dquot, qsize_t inodes)
-{
-	if (test_bit(DQ_FAKE_B, &dquot->dq_flags) ||
-	    dquot->dq_dqb.dqb_curinodes <= dquot->dq_dqb.dqb_isoftlimit ||
-	    !sb_has_quota_limits_enabled(dquot->dq_sb, dquot->dq_type))
-		return QUOTA_NL_NOWARN;
-
-	if (dquot->dq_dqb.dqb_curinodes - inodes <= dquot->dq_dqb.dqb_isoftlimit)
-		return QUOTA_NL_ISOFTBELOW;
-	if (dquot->dq_dqb.dqb_curinodes >= dquot->dq_dqb.dqb_ihardlimit &&
-	    dquot->dq_dqb.dqb_curinodes - inodes < dquot->dq_dqb.dqb_ihardlimit)
-		return QUOTA_NL_IHARDBELOW;
-	return QUOTA_NL_NOWARN;
-}
-
-static int info_bdq_free(struct dquot *dquot, qsize_t space)
-{
-	if (test_bit(DQ_FAKE_B, &dquot->dq_flags) ||
-	    dquot->dq_dqb.dqb_curspace <= dquot->dq_dqb.dqb_bsoftlimit)
-		return QUOTA_NL_NOWARN;
-
-	if (dquot->dq_dqb.dqb_curspace - space <= dquot->dq_dqb.dqb_bsoftlimit)
-		return QUOTA_NL_BSOFTBELOW;
-	if (dquot->dq_dqb.dqb_curspace >= dquot->dq_dqb.dqb_bhardlimit &&
-	    dquot->dq_dqb.dqb_curspace - space < dquot->dq_dqb.dqb_bhardlimit)
-		return QUOTA_NL_BHARDBELOW;
-	return QUOTA_NL_NOWARN;
-}
-/*
- *	Initialize quota pointers in inode
- *	We do things in a bit complicated way but by that we avoid calling
- *	dqget() and thus filesystem callbacks under dqptr_sem.
- */
-int dquot_initialize(struct inode *inode, int type)
-{
-	unsigned int id = 0;
-	int cnt, ret = 0;
-	struct dquot *got[MAXQUOTAS] = { NODQUOT, NODQUOT };
-	struct super_block *sb = inode->i_sb;
-
-	/* First test before acquiring mutex - solves deadlocks when we
-         * re-enter the quota code and are already holding the mutex */
-	if (IS_NOQUOTA(inode))
-		return 0;
-
-	/* First get references to structures we might need. */
-	for (cnt = 0; cnt < MAXQUOTAS; cnt++) {
-		if (type != -1 && cnt != type)
-			continue;
-		switch (cnt) {
-		case USRQUOTA:
-			id = inode->i_uid;
-			break;
-		case GRPQUOTA:
-			id = inode->i_gid;
-			break;
-		}
-		got[cnt] = dqget(sb, id, cnt);
-	}
-
-	down_write(&sb_dqopt(sb)->dqptr_sem);
-	/* Having dqptr_sem we know NOQUOTA flags can't be altered... */
-	if (IS_NOQUOTA(inode))
-		goto out_err;
-	for (cnt = 0; cnt < MAXQUOTAS; cnt++) {
-		if (type != -1 && cnt != type)
-			continue;
-		/* Avoid races with quotaoff() */
-		if (!sb_has_quota_active(sb, cnt))
-			continue;
-		if (inode->i_dquot[cnt] == NODQUOT) {
-			inode->i_dquot[cnt] = got[cnt];
-			got[cnt] = NODQUOT;
-		}
-	}
-out_err:
-	up_write(&sb_dqopt(sb)->dqptr_sem);
-	/* Drop unused references */
-	for (cnt = 0; cnt < MAXQUOTAS; cnt++)
-		dqput(got[cnt]);
-	return ret;
-}
-EXPORT_SYMBOL(dquot_initialize);
-
-/*
- * 	Release all quotas referenced by inode
- */
-int dquot_drop(struct inode *inode)
-{
-	int cnt;
-	struct dquot *put[MAXQUOTAS];
-
-	down_write(&sb_dqopt(inode->i_sb)->dqptr_sem);
-	for (cnt = 0; cnt < MAXQUOTAS; cnt++) {
-		put[cnt] = inode->i_dquot[cnt];
-		inode->i_dquot[cnt] = NODQUOT;
-	}
-	up_write(&sb_dqopt(inode->i_sb)->dqptr_sem);
-
-	for (cnt = 0; cnt < MAXQUOTAS; cnt++)
-		dqput(put[cnt]);
-	return 0;
-}
-EXPORT_SYMBOL(dquot_drop);
-
-/* Wrapper to remove references to quota structures from inode */
-void vfs_dq_drop(struct inode *inode)
-{
-	/* Here we can get arbitrary inode from clear_inode() so we have
-	 * to be careful. OTOH we don't need locking as quota operations
-	 * are allowed to change only at mount time */
-	if (!IS_NOQUOTA(inode) && inode->i_sb && inode->i_sb->dq_op
-	    && inode->i_sb->dq_op->drop) {
-		int cnt;
-		/* Test before calling to rule out calls from proc and such
-                 * where we are not allowed to block. Note that this is
-		 * actually reliable test even without the lock - the caller
-		 * must assure that nobody can come after the DQUOT_DROP and
-		 * add quota pointers back anyway */
-		for (cnt = 0; cnt < MAXQUOTAS; cnt++)
-			if (inode->i_dquot[cnt] != NODQUOT)
-				break;
-		if (cnt < MAXQUOTAS)
-			inode->i_sb->dq_op->drop(inode);
-	}
-}
-EXPORT_SYMBOL(vfs_dq_drop);
-
-/*
- * Following four functions update i_blocks+i_bytes fields and
- * quota information (together with appropriate checks)
- * NOTE: We absolutely rely on the fact that caller dirties
- * the inode (usually macros in quotaops.h care about this) and
- * holds a handle for the current transaction so that dquot write and
- * inode write go into the same transaction.
- */
-
-/*
- * This operation can block, but only after everything is updated
- */
-int __dquot_alloc_space(struct inode *inode, qsize_t number,
-			int warn, int reserve)
-{
-	int cnt, ret = QUOTA_OK;
-	char warntype[MAXQUOTAS];
-
-	for (cnt = 0; cnt < MAXQUOTAS; cnt++)
-		warntype[cnt] = QUOTA_NL_NOWARN;
-
-	spin_lock(&dq_data_lock);
-	for (cnt = 0; cnt < MAXQUOTAS; cnt++) {
-		if (inode->i_dquot[cnt] == NODQUOT)
-			continue;
-		if (check_bdq(inode->i_dquot[cnt], number, warn, warntype+cnt)
-		    == NO_QUOTA) {
-			ret = NO_QUOTA;
-			goto out_unlock;
-		}
-	}
-	for (cnt = 0; cnt < MAXQUOTAS; cnt++) {
-		if (inode->i_dquot[cnt] == NODQUOT)
-			continue;
-		if (reserve)
-			dquot_resv_space(inode->i_dquot[cnt], number);
-		else
-			dquot_incr_space(inode->i_dquot[cnt], number);
-	}
-	if (!reserve)
-		inode_add_bytes(inode, number);
-out_unlock:
-	spin_unlock(&dq_data_lock);
-	flush_warnings(inode->i_dquot, warntype);
-	return ret;
-}
-
-int dquot_alloc_space(struct inode *inode, qsize_t number, int warn)
-{
-	int cnt, ret = QUOTA_OK;
-
-	/*
-	 * First test before acquiring mutex - solves deadlocks when we
-	 * re-enter the quota code and are already holding the mutex
-	 */
-	if (IS_NOQUOTA(inode)) {
-		inode_add_bytes(inode, number);
-		goto out;
-	}
-
-	down_read(&sb_dqopt(inode->i_sb)->dqptr_sem);
-	if (IS_NOQUOTA(inode)) {
-		inode_add_bytes(inode, number);
-		goto out_unlock;
-	}
-
-	ret = __dquot_alloc_space(inode, number, warn, 0);
-	if (ret == NO_QUOTA)
-		goto out_unlock;
-
-	/* Dirtify all the dquots - this can block when journalling */
-	for (cnt = 0; cnt < MAXQUOTAS; cnt++)
-		if (inode->i_dquot[cnt])
-			mark_dquot_dirty(inode->i_dquot[cnt]);
-out_unlock:
-	up_read(&sb_dqopt(inode->i_sb)->dqptr_sem);
-out:
-	return ret;
-}
-EXPORT_SYMBOL(dquot_alloc_space);
-
-int dquot_reserve_space(struct inode *inode, qsize_t number, int warn)
-{
-	int ret = QUOTA_OK;
-
-	if (IS_NOQUOTA(inode))
-		goto out;
-
-	down_read(&sb_dqopt(inode->i_sb)->dqptr_sem);
-	if (IS_NOQUOTA(inode))
-		goto out_unlock;
-
-	ret = __dquot_alloc_space(inode, number, warn, 1);
-out_unlock:
-	up_read(&sb_dqopt(inode->i_sb)->dqptr_sem);
-out:
-	return ret;
-}
-EXPORT_SYMBOL(dquot_reserve_space);
-
-/*
- * This operation can block, but only after everything is updated
- */
-int dquot_alloc_inode(const struct inode *inode, qsize_t number)
-{
-	int cnt, ret = NO_QUOTA;
-	char warntype[MAXQUOTAS];
-
-	/* First test before acquiring mutex - solves deadlocks when we
-         * re-enter the quota code and are already holding the mutex */
-	if (IS_NOQUOTA(inode))
-		return QUOTA_OK;
-	for (cnt = 0; cnt < MAXQUOTAS; cnt++)
-		warntype[cnt] = QUOTA_NL_NOWARN;
-	down_read(&sb_dqopt(inode->i_sb)->dqptr_sem);
-	if (IS_NOQUOTA(inode)) {
-		up_read(&sb_dqopt(inode->i_sb)->dqptr_sem);
-		return QUOTA_OK;
-	}
-	spin_lock(&dq_data_lock);
-	for (cnt = 0; cnt < MAXQUOTAS; cnt++) {
-		if (inode->i_dquot[cnt] == NODQUOT)
-			continue;
-		if (check_idq(inode->i_dquot[cnt], number, warntype+cnt) == NO_QUOTA)
-			goto warn_put_all;
-	}
-
-	for (cnt = 0; cnt < MAXQUOTAS; cnt++) {
-		if (inode->i_dquot[cnt] == NODQUOT)
-			continue;
-		dquot_incr_inodes(inode->i_dquot[cnt], number);
-	}
-	ret = QUOTA_OK;
-warn_put_all:
-	spin_unlock(&dq_data_lock);
-	if (ret == QUOTA_OK)
-		/* Dirtify all the dquots - this can block when journalling */
-		for (cnt = 0; cnt < MAXQUOTAS; cnt++)
-			if (inode->i_dquot[cnt])
-				mark_dquot_dirty(inode->i_dquot[cnt]);
-	flush_warnings(inode->i_dquot, warntype);
-	up_read(&sb_dqopt(inode->i_sb)->dqptr_sem);
-	return ret;
-}
-EXPORT_SYMBOL(dquot_alloc_inode);
-
-int dquot_claim_space(struct inode *inode, qsize_t number)
-{
-	int cnt;
-	int ret = QUOTA_OK;
-
-	if (IS_NOQUOTA(inode)) {
-		inode_add_bytes(inode, number);
-		goto out;
-	}
-
-	down_read(&sb_dqopt(inode->i_sb)->dqptr_sem);
-	if (IS_NOQUOTA(inode))	{
-		up_read(&sb_dqopt(inode->i_sb)->dqptr_sem);
-		inode_add_bytes(inode, number);
-		goto out;
-	}
-
-	spin_lock(&dq_data_lock);
-	/* Claim reserved quotas to allocated quotas */
-	for (cnt = 0; cnt < MAXQUOTAS; cnt++) {
-		if (inode->i_dquot[cnt] != NODQUOT)
-			dquot_claim_reserved_space(inode->i_dquot[cnt],
-							number);
-	}
-	/* Update inode bytes */
-	inode_add_bytes(inode, number);
-	spin_unlock(&dq_data_lock);
-	/* Dirtify all the dquots - this can block when journalling */
-	for (cnt = 0; cnt < MAXQUOTAS; cnt++)
-		if (inode->i_dquot[cnt])
-			mark_dquot_dirty(inode->i_dquot[cnt]);
-	up_read(&sb_dqopt(inode->i_sb)->dqptr_sem);
-out:
-	return ret;
-}
-EXPORT_SYMBOL(dquot_claim_space);
-
-/*
- * Release reserved quota space
- */
-void dquot_release_reserved_space(struct inode *inode, qsize_t number)
-{
-	int cnt;
-
-	if (IS_NOQUOTA(inode))
-		goto out;
-
-	down_read(&sb_dqopt(inode->i_sb)->dqptr_sem);
-	if (IS_NOQUOTA(inode))
-		goto out_unlock;
-
-	spin_lock(&dq_data_lock);
-	/* Release reserved dquots */
-	for (cnt = 0; cnt < MAXQUOTAS; cnt++) {
-		if (inode->i_dquot[cnt] != NODQUOT)
-			dquot_free_reserved_space(inode->i_dquot[cnt], number);
-	}
-	spin_unlock(&dq_data_lock);
-
-out_unlock:
-	up_read(&sb_dqopt(inode->i_sb)->dqptr_sem);
-out:
-	return;
-}
-EXPORT_SYMBOL(dquot_release_reserved_space);
-
-/*
- * This operation can block, but only after everything is updated
- */
-int dquot_free_space(struct inode *inode, qsize_t number)
-{
-	unsigned int cnt;
-	char warntype[MAXQUOTAS];
-
-	/* First test before acquiring mutex - solves deadlocks when we
-         * re-enter the quota code and are already holding the mutex */
-	if (IS_NOQUOTA(inode)) {
-out_sub:
-		inode_sub_bytes(inode, number);
-		return QUOTA_OK;
-	}
-
-	down_read(&sb_dqopt(inode->i_sb)->dqptr_sem);
-	/* Now recheck reliably when holding dqptr_sem */
-	if (IS_NOQUOTA(inode)) {
-		up_read(&sb_dqopt(inode->i_sb)->dqptr_sem);
-		goto out_sub;
-	}
-	spin_lock(&dq_data_lock);
-	for (cnt = 0; cnt < MAXQUOTAS; cnt++) {
-		if (inode->i_dquot[cnt] == NODQUOT)
-			continue;
-		warntype[cnt] = info_bdq_free(inode->i_dquot[cnt], number);
-		dquot_decr_space(inode->i_dquot[cnt], number);
-	}
-	inode_sub_bytes(inode, number);
-	spin_unlock(&dq_data_lock);
-	/* Dirtify all the dquots - this can block when journalling */
-	for (cnt = 0; cnt < MAXQUOTAS; cnt++)
-		if (inode->i_dquot[cnt])
-			mark_dquot_dirty(inode->i_dquot[cnt]);
-	flush_warnings(inode->i_dquot, warntype);
-	up_read(&sb_dqopt(inode->i_sb)->dqptr_sem);
-	return QUOTA_OK;
-}
-EXPORT_SYMBOL(dquot_free_space);
-
-/*
- * This operation can block, but only after everything is updated
- */
-int dquot_free_inode(const struct inode *inode, qsize_t number)
-{
-	unsigned int cnt;
-	char warntype[MAXQUOTAS];
-
-	/* First test before acquiring mutex - solves deadlocks when we
-         * re-enter the quota code and are already holding the mutex */
-	if (IS_NOQUOTA(inode))
-		return QUOTA_OK;
-
-	down_read(&sb_dqopt(inode->i_sb)->dqptr_sem);
-	/* Now recheck reliably when holding dqptr_sem */
-	if (IS_NOQUOTA(inode)) {
-		up_read(&sb_dqopt(inode->i_sb)->dqptr_sem);
-		return QUOTA_OK;
-	}
-	spin_lock(&dq_data_lock);
-	for (cnt = 0; cnt < MAXQUOTAS; cnt++) {
-		if (inode->i_dquot[cnt] == NODQUOT)
-			continue;
-		warntype[cnt] = info_idq_free(inode->i_dquot[cnt], number);
-		dquot_decr_inodes(inode->i_dquot[cnt], number);
-	}
-	spin_unlock(&dq_data_lock);
-	/* Dirtify all the dquots - this can block when journalling */
-	for (cnt = 0; cnt < MAXQUOTAS; cnt++)
-		if (inode->i_dquot[cnt])
-			mark_dquot_dirty(inode->i_dquot[cnt]);
-	flush_warnings(inode->i_dquot, warntype);
-	up_read(&sb_dqopt(inode->i_sb)->dqptr_sem);
-	return QUOTA_OK;
-}
-EXPORT_SYMBOL(dquot_free_inode);
-
-/*
- * call back function, get reserved quota space from underlying fs
- */
-qsize_t dquot_get_reserved_space(struct inode *inode)
-{
-	qsize_t reserved_space = 0;
-
-	if (sb_any_quota_active(inode->i_sb) &&
-	    inode->i_sb->dq_op->get_reserved_space)
-		reserved_space = inode->i_sb->dq_op->get_reserved_space(inode);
-	return reserved_space;
-}
-
-/*
- * Transfer the number of inode and blocks from one diskquota to an other.
- *
- * This operation can block, but only after everything is updated
- * A transaction must be started when entering this function.
- */
-int dquot_transfer(struct inode *inode, struct iattr *iattr)
-{
-	qsize_t space, cur_space;
-	qsize_t rsv_space = 0;
-	struct dquot *transfer_from[MAXQUOTAS];
-	struct dquot *transfer_to[MAXQUOTAS];
-	int cnt, ret = QUOTA_OK;
-	int chuid = iattr->ia_valid & ATTR_UID && inode->i_uid != iattr->ia_uid,
-	    chgid = iattr->ia_valid & ATTR_GID && inode->i_gid != iattr->ia_gid;
-	char warntype_to[MAXQUOTAS];
-	char warntype_from_inodes[MAXQUOTAS], warntype_from_space[MAXQUOTAS];
-
-	/* First test before acquiring mutex - solves deadlocks when we
-         * re-enter the quota code and are already holding the mutex */
-	if (IS_NOQUOTA(inode))
-		return QUOTA_OK;
-	/* Initialize the arrays */
-	for (cnt = 0; cnt < MAXQUOTAS; cnt++) {
-		transfer_from[cnt] = NODQUOT;
-		transfer_to[cnt] = NODQUOT;
-		warntype_to[cnt] = QUOTA_NL_NOWARN;
-		switch (cnt) {
-			case USRQUOTA:
-				if (!chuid)
-					continue;
-				transfer_to[cnt] = dqget(inode->i_sb, iattr->ia_uid, cnt);
-				break;
-			case GRPQUOTA:
-				if (!chgid)
-					continue;
-				transfer_to[cnt] = dqget(inode->i_sb, iattr->ia_gid, cnt);
-				break;
-		}
-	}
-
-	down_write(&sb_dqopt(inode->i_sb)->dqptr_sem);
-	/* Now recheck reliably when holding dqptr_sem */
-	if (IS_NOQUOTA(inode)) {	/* File without quota accounting? */
-		up_write(&sb_dqopt(inode->i_sb)->dqptr_sem);
-		goto put_all;
-	}
-	spin_lock(&dq_data_lock);
-	cur_space = inode_get_bytes(inode);
-	rsv_space = dquot_get_reserved_space(inode);
-	space = cur_space + rsv_space;
-	/* Build the transfer_from list and check the limits */
-	for (cnt = 0; cnt < MAXQUOTAS; cnt++) {
-		if (transfer_to[cnt] == NODQUOT)
-			continue;
-		transfer_from[cnt] = inode->i_dquot[cnt];
-		if (check_idq(transfer_to[cnt], 1, warntype_to + cnt) ==
-		    NO_QUOTA || check_bdq(transfer_to[cnt], space, 0,
-		    warntype_to + cnt) == NO_QUOTA)
-			goto over_quota;
-	}
-
-	/*
-	 * Finally perform the needed transfer from transfer_from to transfer_to
-	 */
-	for (cnt = 0; cnt < MAXQUOTAS; cnt++) {
-		/*
-		 * Skip changes for same uid or gid or for turned off quota-type.
-		 */
-		if (transfer_to[cnt] == NODQUOT)
-			continue;
-
-		/* Due to IO error we might not have transfer_from[] structure */
-		if (transfer_from[cnt]) {
-			warntype_from_inodes[cnt] =
-				info_idq_free(transfer_from[cnt], 1);
-			warntype_from_space[cnt] =
-				info_bdq_free(transfer_from[cnt], space);
-			dquot_decr_inodes(transfer_from[cnt], 1);
-			dquot_decr_space(transfer_from[cnt], cur_space);
-			dquot_free_reserved_space(transfer_from[cnt],
-						  rsv_space);
-		}
-
-		dquot_incr_inodes(transfer_to[cnt], 1);
-		dquot_incr_space(transfer_to[cnt], cur_space);
-		dquot_resv_space(transfer_to[cnt], rsv_space);
-
-		inode->i_dquot[cnt] = transfer_to[cnt];
-	}
-	spin_unlock(&dq_data_lock);
-	up_write(&sb_dqopt(inode->i_sb)->dqptr_sem);
-
-	/* Dirtify all the dquots - this can block when journalling */
-	for (cnt = 0; cnt < MAXQUOTAS; cnt++) {
-		if (transfer_from[cnt])
-			mark_dquot_dirty(transfer_from[cnt]);
-		if (transfer_to[cnt]) {
-			mark_dquot_dirty(transfer_to[cnt]);
-			/* The reference we got is transferred to the inode */
-			transfer_to[cnt] = NODQUOT;
-		}
-	}
-warn_put_all:
-	flush_warnings(transfer_to, warntype_to);
-	flush_warnings(transfer_from, warntype_from_inodes);
-	flush_warnings(transfer_from, warntype_from_space);
-put_all:
-	for (cnt = 0; cnt < MAXQUOTAS; cnt++) {
-		dqput(transfer_from[cnt]);
-		dqput(transfer_to[cnt]);
-	}
-	return ret;
-over_quota:
-	spin_unlock(&dq_data_lock);
-	up_write(&sb_dqopt(inode->i_sb)->dqptr_sem);
-	/* Clear dquot pointers we don't want to dqput() */
-	for (cnt = 0; cnt < MAXQUOTAS; cnt++)
-		transfer_from[cnt] = NODQUOT;
-	ret = NO_QUOTA;
-	goto warn_put_all;
-}
-EXPORT_SYMBOL(dquot_transfer);
-
-/* Wrapper for transferring ownership of an inode */
-int vfs_dq_transfer(struct inode *inode, struct iattr *iattr)
-{
-	if (sb_any_quota_active(inode->i_sb) && !IS_NOQUOTA(inode)) {
-		vfs_dq_init(inode);
-		if (inode->i_sb->dq_op->transfer(inode, iattr) == NO_QUOTA)
-			return 1;
-	}
-	return 0;
-}
-EXPORT_SYMBOL(vfs_dq_transfer);
-
-/*
- * Write info of quota file to disk
- */
-int dquot_commit_info(struct super_block *sb, int type)
-{
-	int ret;
-	struct quota_info *dqopt = sb_dqopt(sb);
-
-	mutex_lock(&dqopt->dqio_mutex);
-	ret = dqopt->ops[type]->write_file_info(sb, type);
-	mutex_unlock(&dqopt->dqio_mutex);
-	return ret;
-}
-EXPORT_SYMBOL(dquot_commit_info);
-
-/*
- * Definitions of diskquota operations.
- */
-struct dquot_operations dquot_operations = {
-	.initialize	= dquot_initialize,
-	.drop		= dquot_drop,
-	.alloc_space	= dquot_alloc_space,
-	.alloc_inode	= dquot_alloc_inode,
-	.free_space	= dquot_free_space,
-	.free_inode	= dquot_free_inode,
-	.transfer	= dquot_transfer,
-	.write_dquot	= dquot_commit,
-	.acquire_dquot	= dquot_acquire,
-	.release_dquot	= dquot_release,
-	.mark_dirty	= dquot_mark_dquot_dirty,
-	.write_info	= dquot_commit_info,
-	.alloc_dquot	= dquot_alloc,
-	.destroy_dquot	= dquot_destroy,
-};
-
-/*
- * Turn quota off on a device. type == -1 ==> quotaoff for all types (umount)
- */
-int vfs_quota_disable(struct super_block *sb, int type, unsigned int flags)
-{
-	int cnt, ret = 0;
-	struct quota_info *dqopt = sb_dqopt(sb);
-	struct inode *toputinode[MAXQUOTAS];
-
-	/* Cannot turn off usage accounting without turning off limits, or
-	 * suspend quotas and simultaneously turn quotas off. */
-	if ((flags & DQUOT_USAGE_ENABLED && !(flags & DQUOT_LIMITS_ENABLED))
-	    || (flags & DQUOT_SUSPENDED && flags & (DQUOT_LIMITS_ENABLED |
-	    DQUOT_USAGE_ENABLED)))
-		return -EINVAL;
-
-	/* We need to serialize quota_off() for device */
-	mutex_lock(&dqopt->dqonoff_mutex);
-
-	/*
-	 * Skip everything if there's nothing to do. We have to do this because
-	 * sometimes we are called when fill_super() failed and calling
-	 * sync_fs() in such cases does no good.
-	 */
-	if (!sb_any_quota_loaded(sb)) {
-		mutex_unlock(&dqopt->dqonoff_mutex);
-		return 0;
-	}
-	for (cnt = 0; cnt < MAXQUOTAS; cnt++) {
-		toputinode[cnt] = NULL;
-		if (type != -1 && cnt != type)
-			continue;
-		if (!sb_has_quota_loaded(sb, cnt))
-			continue;
-
-		if (flags & DQUOT_SUSPENDED) {
-			spin_lock(&dq_state_lock);
-			dqopt->flags |=
-				dquot_state_flag(DQUOT_SUSPENDED, cnt);
-			spin_unlock(&dq_state_lock);
-		} else {
-			spin_lock(&dq_state_lock);
-			dqopt->flags &= ~dquot_state_flag(flags, cnt);
-			/* Turning off suspended quotas? */
-			if (!sb_has_quota_loaded(sb, cnt) &&
-			    sb_has_quota_suspended(sb, cnt)) {
-				dqopt->flags &=	~dquot_state_flag(
-							DQUOT_SUSPENDED, cnt);
-				spin_unlock(&dq_state_lock);
-				iput(dqopt->files[cnt]);
-				dqopt->files[cnt] = NULL;
-				continue;
-			}
-			spin_unlock(&dq_state_lock);
-		}
-
-		/* We still have to keep quota loaded? */
-		if (sb_has_quota_loaded(sb, cnt) && !(flags & DQUOT_SUSPENDED))
-			continue;
-
-		/* Note: these are blocking operations */
-		drop_dquot_ref(sb, cnt);
-		invalidate_dquots(sb, cnt);
-		/*
-		 * Now all dquots should be invalidated, all writes done so we should be only
-		 * users of the info. No locks needed.
-		 */
-		if (info_dirty(&dqopt->info[cnt]))
-			sb->dq_op->write_info(sb, cnt);
-		if (dqopt->ops[cnt]->free_file_info)
-			dqopt->ops[cnt]->free_file_info(sb, cnt);
-		put_quota_format(dqopt->info[cnt].dqi_format);
-
-		toputinode[cnt] = dqopt->files[cnt];
-		if (!sb_has_quota_loaded(sb, cnt))
-			dqopt->files[cnt] = NULL;
-		dqopt->info[cnt].dqi_flags = 0;
-		dqopt->info[cnt].dqi_igrace = 0;
-		dqopt->info[cnt].dqi_bgrace = 0;
-		dqopt->ops[cnt] = NULL;
-	}
-	mutex_unlock(&dqopt->dqonoff_mutex);
-
-	/* Skip syncing and setting flags if quota files are hidden */
-	if (dqopt->flags & DQUOT_QUOTA_SYS_FILE)
-		goto put_inodes;
-
-	/* Sync the superblock so that buffers with quota data are written to
-	 * disk (and so userspace sees correct data afterwards). */
-	if (sb->s_op->sync_fs)
-		sb->s_op->sync_fs(sb, 1);
-	sync_blockdev(sb->s_bdev);
-	/* Now the quota files are just ordinary files and we can set the
-	 * inode flags back. Moreover we discard the pagecache so that
-	 * userspace sees the writes we did bypassing the pagecache. We
-	 * must also discard the blockdev buffers so that we see the
-	 * changes done by userspace on the next quotaon() */
-	for (cnt = 0; cnt < MAXQUOTAS; cnt++)
-		if (toputinode[cnt]) {
-			mutex_lock(&dqopt->dqonoff_mutex);
-			/* If quota was reenabled in the meantime, we have
-			 * nothing to do */
-			if (!sb_has_quota_loaded(sb, cnt)) {
-				mutex_lock_nested(&toputinode[cnt]->i_mutex, I_MUTEX_QUOTA);
-				toputinode[cnt]->i_flags &= ~(S_IMMUTABLE |
-				  S_NOATIME | S_NOQUOTA);
-				truncate_inode_pages(&toputinode[cnt]->i_data, 0);
-				mutex_unlock(&toputinode[cnt]->i_mutex);
-				mark_inode_dirty(toputinode[cnt]);
-			}
-			mutex_unlock(&dqopt->dqonoff_mutex);
-		}
-	if (sb->s_bdev)
-		invalidate_bdev(sb->s_bdev);
-put_inodes:
-	for (cnt = 0; cnt < MAXQUOTAS; cnt++)
-		if (toputinode[cnt]) {
-			/* On remount RO, we keep the inode pointer so that we
-			 * can reenable quota on the subsequent remount RW. We
-			 * have to check 'flags' variable and not use sb_has_
-			 * function because another quotaon / quotaoff could
-			 * change global state before we got here. We refuse
-			 * to suspend quotas when there is pending delete on
-			 * the quota file... */
-			if (!(flags & DQUOT_SUSPENDED))
-				iput(toputinode[cnt]);
-			else if (!toputinode[cnt]->i_nlink)
-				ret = -EBUSY;
-		}
-	return ret;
-}
-EXPORT_SYMBOL(vfs_quota_disable);
-
-int vfs_quota_off(struct super_block *sb, int type, int remount)
-{
-	return vfs_quota_disable(sb, type, remount ? DQUOT_SUSPENDED :
-				 (DQUOT_USAGE_ENABLED | DQUOT_LIMITS_ENABLED));
-}
-EXPORT_SYMBOL(vfs_quota_off);
-/*
- *	Turn quotas on on a device
- */
-
-/*
- * Helper function to turn quotas on when we already have the inode of
- * quota file and no quota information is loaded.
- */
-static int vfs_load_quota_inode(struct inode *inode, int type, int format_id,
-	unsigned int flags)
-{
-	struct quota_format_type *fmt = find_quota_format(format_id);
-	struct super_block *sb = inode->i_sb;
-	struct quota_info *dqopt = sb_dqopt(sb);
-	int error;
-	int oldflags = -1;
-
-	if (!fmt)
-		return -ESRCH;
-	if (!S_ISREG(inode->i_mode)) {
-		error = -EACCES;
-		goto out_fmt;
-	}
-	if (IS_RDONLY(inode)) {
-		error = -EROFS;
-		goto out_fmt;
-	}
-	if (!sb->s_op->quota_write || !sb->s_op->quota_read) {
-		error = -EINVAL;
-		goto out_fmt;
-	}
-	/* Usage always has to be set... */
-	if (!(flags & DQUOT_USAGE_ENABLED)) {
-		error = -EINVAL;
-		goto out_fmt;
-	}
-
-	if (!(dqopt->flags & DQUOT_QUOTA_SYS_FILE)) {
-		/* As we bypass the pagecache we must now flush the inode so
-		 * that we see all the changes from userspace... */
-		write_inode_now(inode, 1);
-		/* And now flush the block cache so that kernel sees the
-		 * changes */
-		invalidate_bdev(sb->s_bdev);
-	}
-	mutex_lock(&inode->i_mutex);
-	mutex_lock(&dqopt->dqonoff_mutex);
-	if (sb_has_quota_loaded(sb, type)) {
-		error = -EBUSY;
-		goto out_lock;
-	}
-
-	if (!(dqopt->flags & DQUOT_QUOTA_SYS_FILE)) {
-		/* We don't want quota and atime on quota files (deadlocks
-		 * possible) Also nobody should write to the file - we use
-		 * special IO operations which ignore the immutable bit. */
-		down_write(&dqopt->dqptr_sem);
-		oldflags = inode->i_flags & (S_NOATIME | S_IMMUTABLE | S_NOQUOTA);
-		inode->i_flags |= S_NOQUOTA | S_NOATIME | S_IMMUTABLE;
-		up_write(&dqopt->dqptr_sem);
-		sb->dq_op->drop(inode);
-	}
-
-	error = -EIO;
-	dqopt->files[type] = igrab(inode);
-	if (!dqopt->files[type])
-		goto out_lock;
-	error = -EINVAL;
-	if (!fmt->qf_ops->check_quota_file(sb, type))
-		goto out_file_init;
-
-	dqopt->ops[type] = fmt->qf_ops;
-	dqopt->info[type].dqi_format = fmt;
-	dqopt->info[type].dqi_fmt_id = format_id;
-	INIT_LIST_HEAD(&dqopt->info[type].dqi_dirty_list);
-	mutex_lock(&dqopt->dqio_mutex);
-	if ((error = dqopt->ops[type]->read_file_info(sb, type)) < 0) {
-		mutex_unlock(&dqopt->dqio_mutex);
-		goto out_file_init;
-	}
-	mutex_unlock(&dqopt->dqio_mutex);
-	mutex_unlock(&inode->i_mutex);
-	spin_lock(&dq_state_lock);
-	dqopt->flags |= dquot_state_flag(flags, type);
-	spin_unlock(&dq_state_lock);
-
-	add_dquot_ref(sb, type);
-	mutex_unlock(&dqopt->dqonoff_mutex);
-
-	return 0;
-
-out_file_init:
-	dqopt->files[type] = NULL;
-	iput(inode);
-out_lock:
-	mutex_unlock(&dqopt->dqonoff_mutex);
-	if (oldflags != -1) {
-		down_write(&dqopt->dqptr_sem);
-		/* Set the flags back (in the case of accidental quotaon()
-		 * on a wrong file we don't want to mess up the flags) */
-		inode->i_flags &= ~(S_NOATIME | S_NOQUOTA | S_IMMUTABLE);
-		inode->i_flags |= oldflags;
-		up_write(&dqopt->dqptr_sem);
-	}
-	mutex_unlock(&inode->i_mutex);
-out_fmt:
-	put_quota_format(fmt);
-
-	return error; 
-}
-
-/* Reenable quotas on remount RW */
-static int vfs_quota_on_remount(struct super_block *sb, int type)
-{
-	struct quota_info *dqopt = sb_dqopt(sb);
-	struct inode *inode;
-	int ret;
-	unsigned int flags;
-
-	mutex_lock(&dqopt->dqonoff_mutex);
-	if (!sb_has_quota_suspended(sb, type)) {
-		mutex_unlock(&dqopt->dqonoff_mutex);
-		return 0;
-	}
-	inode = dqopt->files[type];
-	dqopt->files[type] = NULL;
-	spin_lock(&dq_state_lock);
-	flags = dqopt->flags & dquot_state_flag(DQUOT_USAGE_ENABLED |
-						DQUOT_LIMITS_ENABLED, type);
-	dqopt->flags &= ~dquot_state_flag(DQUOT_STATE_FLAGS, type);
-	spin_unlock(&dq_state_lock);
-	mutex_unlock(&dqopt->dqonoff_mutex);
-
-	flags = dquot_generic_flag(flags, type);
-	ret = vfs_load_quota_inode(inode, type, dqopt->info[type].dqi_fmt_id,
-				   flags);
-	iput(inode);
-
-	return ret;
-}
-
-int vfs_quota_on_path(struct super_block *sb, int type, int format_id,
-		      struct path *path)
-{
-	int error = security_quota_on(path->dentry);
-	if (error)
-		return error;
-	/* Quota file not on the same filesystem? */
-	if (path->mnt->mnt_sb != sb)
-		error = -EXDEV;
-	else
-		error = vfs_load_quota_inode(path->dentry->d_inode, type,
-					     format_id, DQUOT_USAGE_ENABLED |
-					     DQUOT_LIMITS_ENABLED);
-	return error;
-}
-EXPORT_SYMBOL(vfs_quota_on_path);
-
-int vfs_quota_on(struct super_block *sb, int type, int format_id, char *name,
-		 int remount)
-{
-	struct path path;
-	int error;
-
-	if (remount)
-		return vfs_quota_on_remount(sb, type);
-
-	error = kern_path(name, LOOKUP_FOLLOW, &path);
-	if (!error) {
-		error = vfs_quota_on_path(sb, type, format_id, &path);
-		path_put(&path);
-	}
-	return error;
-}
-EXPORT_SYMBOL(vfs_quota_on);
-
-/*
- * More powerful function for turning on quotas allowing setting
- * of individual quota flags
- */
-int vfs_quota_enable(struct inode *inode, int type, int format_id,
-		unsigned int flags)
-{
-	int ret = 0;
-	struct super_block *sb = inode->i_sb;
-	struct quota_info *dqopt = sb_dqopt(sb);
-
-	/* Just unsuspend quotas? */
-	if (flags & DQUOT_SUSPENDED)
-		return vfs_quota_on_remount(sb, type);
-	if (!flags)
-		return 0;
-	/* Just updating flags needed? */
-	if (sb_has_quota_loaded(sb, type)) {
-		mutex_lock(&dqopt->dqonoff_mutex);
-		/* Now do a reliable test... */
-		if (!sb_has_quota_loaded(sb, type)) {
-			mutex_unlock(&dqopt->dqonoff_mutex);
-			goto load_quota;
-		}
-		if (flags & DQUOT_USAGE_ENABLED &&
-		    sb_has_quota_usage_enabled(sb, type)) {
-			ret = -EBUSY;
-			goto out_lock;
-		}
-		if (flags & DQUOT_LIMITS_ENABLED &&
-		    sb_has_quota_limits_enabled(sb, type)) {
-			ret = -EBUSY;
-			goto out_lock;
-		}
-		spin_lock(&dq_state_lock);
-		sb_dqopt(sb)->flags |= dquot_state_flag(flags, type);
-		spin_unlock(&dq_state_lock);
-out_lock:
-		mutex_unlock(&dqopt->dqonoff_mutex);
-		return ret;
-	}
-
-load_quota:
-	return vfs_load_quota_inode(inode, type, format_id, flags);
-}
-EXPORT_SYMBOL(vfs_quota_enable);
-
-/*
- * This function is used when filesystem needs to initialize quotas
- * during mount time.
- */
-int vfs_quota_on_mount(struct super_block *sb, char *qf_name,
-		int format_id, int type)
-{
-	struct dentry *dentry;
-	int error;
-
-	dentry = lookup_one_len(qf_name, sb->s_root, strlen(qf_name));
-	if (IS_ERR(dentry))
-		return PTR_ERR(dentry);
-
-	if (!dentry->d_inode) {
-		error = -ENOENT;
-		goto out;
-	}
-
-	error = security_quota_on(dentry);
-	if (!error)
-		error = vfs_load_quota_inode(dentry->d_inode, type, format_id,
-				DQUOT_USAGE_ENABLED | DQUOT_LIMITS_ENABLED);
-
-out:
-	dput(dentry);
-	return error;
-}
-EXPORT_SYMBOL(vfs_quota_on_mount);
-
-/* Wrapper to turn on quotas when remounting rw */
-int vfs_dq_quota_on_remount(struct super_block *sb)
-{
-	int cnt;
-	int ret = 0, err;
-
-	if (!sb->s_qcop || !sb->s_qcop->quota_on)
-		return -ENOSYS;
-	for (cnt = 0; cnt < MAXQUOTAS; cnt++) {
-		err = sb->s_qcop->quota_on(sb, cnt, 0, NULL, 1);
-		if (err < 0 && !ret)
-			ret = err;
-	}
-	return ret;
-}
-EXPORT_SYMBOL(vfs_dq_quota_on_remount);
-
-static inline qsize_t qbtos(qsize_t blocks)
-{
-	return blocks << QIF_DQBLKSIZE_BITS;
-}
-
-static inline qsize_t stoqb(qsize_t space)
-{
-	return (space + QIF_DQBLKSIZE - 1) >> QIF_DQBLKSIZE_BITS;
-}
-
-/* Generic routine for getting common part of quota structure */
-static void do_get_dqblk(struct dquot *dquot, struct if_dqblk *di)
-{
-	struct mem_dqblk *dm = &dquot->dq_dqb;
-
-	spin_lock(&dq_data_lock);
-	di->dqb_bhardlimit = stoqb(dm->dqb_bhardlimit);
-	di->dqb_bsoftlimit = stoqb(dm->dqb_bsoftlimit);
-	di->dqb_curspace = dm->dqb_curspace + dm->dqb_rsvspace;
-	di->dqb_ihardlimit = dm->dqb_ihardlimit;
-	di->dqb_isoftlimit = dm->dqb_isoftlimit;
-	di->dqb_curinodes = dm->dqb_curinodes;
-	di->dqb_btime = dm->dqb_btime;
-	di->dqb_itime = dm->dqb_itime;
-	di->dqb_valid = QIF_ALL;
-	spin_unlock(&dq_data_lock);
-}
-
-int vfs_get_dqblk(struct super_block *sb, int type, qid_t id, struct if_dqblk *di)
-{
-	struct dquot *dquot;
-
-	dquot = dqget(sb, id, type);
-	if (dquot == NODQUOT)
-		return -ESRCH;
-	do_get_dqblk(dquot, di);
-	dqput(dquot);
-
-	return 0;
-}
-EXPORT_SYMBOL(vfs_get_dqblk);
-
-/* Generic routine for setting common part of quota structure */
-static int do_set_dqblk(struct dquot *dquot, struct if_dqblk *di)
-{
-	struct mem_dqblk *dm = &dquot->dq_dqb;
-	int check_blim = 0, check_ilim = 0;
-	struct mem_dqinfo *dqi = &sb_dqopt(dquot->dq_sb)->info[dquot->dq_type];
-
-	if ((di->dqb_valid & QIF_BLIMITS &&
-	     (di->dqb_bhardlimit > dqi->dqi_maxblimit ||
-	      di->dqb_bsoftlimit > dqi->dqi_maxblimit)) ||
-	    (di->dqb_valid & QIF_ILIMITS &&
-	     (di->dqb_ihardlimit > dqi->dqi_maxilimit ||
-	      di->dqb_isoftlimit > dqi->dqi_maxilimit)))
-		return -ERANGE;
-
-	spin_lock(&dq_data_lock);
-	if (di->dqb_valid & QIF_SPACE) {
-		dm->dqb_curspace = di->dqb_curspace - dm->dqb_rsvspace;
-		check_blim = 1;
-		__set_bit(DQ_LASTSET_B + QIF_SPACE_B, &dquot->dq_flags);
-	}
-	if (di->dqb_valid & QIF_BLIMITS) {
-		dm->dqb_bsoftlimit = qbtos(di->dqb_bsoftlimit);
-		dm->dqb_bhardlimit = qbtos(di->dqb_bhardlimit);
-		check_blim = 1;
-		__set_bit(DQ_LASTSET_B + QIF_BLIMITS_B, &dquot->dq_flags);
-	}
-	if (di->dqb_valid & QIF_INODES) {
-		dm->dqb_curinodes = di->dqb_curinodes;
-		check_ilim = 1;
-		__set_bit(DQ_LASTSET_B + QIF_INODES_B, &dquot->dq_flags);
-	}
-	if (di->dqb_valid & QIF_ILIMITS) {
-		dm->dqb_isoftlimit = di->dqb_isoftlimit;
-		dm->dqb_ihardlimit = di->dqb_ihardlimit;
-		check_ilim = 1;
-		__set_bit(DQ_LASTSET_B + QIF_ILIMITS_B, &dquot->dq_flags);
-	}
-	if (di->dqb_valid & QIF_BTIME) {
-		dm->dqb_btime = di->dqb_btime;
-		check_blim = 1;
-		__set_bit(DQ_LASTSET_B + QIF_BTIME_B, &dquot->dq_flags);
-	}
-	if (di->dqb_valid & QIF_ITIME) {
-		dm->dqb_itime = di->dqb_itime;
-		check_ilim = 1;
-		__set_bit(DQ_LASTSET_B + QIF_ITIME_B, &dquot->dq_flags);
-	}
-
-	if (check_blim) {
-		if (!dm->dqb_bsoftlimit || dm->dqb_curspace < dm->dqb_bsoftlimit) {
-			dm->dqb_btime = 0;
-			clear_bit(DQ_BLKS_B, &dquot->dq_flags);
-		}
-		else if (!(di->dqb_valid & QIF_BTIME))	/* Set grace only if user hasn't provided his own... */
-			dm->dqb_btime = get_seconds() + dqi->dqi_bgrace;
-	}
-	if (check_ilim) {
-		if (!dm->dqb_isoftlimit || dm->dqb_curinodes < dm->dqb_isoftlimit) {
-			dm->dqb_itime = 0;
-			clear_bit(DQ_INODES_B, &dquot->dq_flags);
-		}
-		else if (!(di->dqb_valid & QIF_ITIME))	/* Set grace only if user hasn't provided his own... */
-			dm->dqb_itime = get_seconds() + dqi->dqi_igrace;
-	}
-	if (dm->dqb_bhardlimit || dm->dqb_bsoftlimit || dm->dqb_ihardlimit || dm->dqb_isoftlimit)
-		clear_bit(DQ_FAKE_B, &dquot->dq_flags);
-	else
-		set_bit(DQ_FAKE_B, &dquot->dq_flags);
-	spin_unlock(&dq_data_lock);
-	mark_dquot_dirty(dquot);
-
-	return 0;
-}
-
-int vfs_set_dqblk(struct super_block *sb, int type, qid_t id, struct if_dqblk *di)
-{
-	struct dquot *dquot;
-	int rc;
-
-	dquot = dqget(sb, id, type);
-	if (!dquot) {
-		rc = -ESRCH;
-		goto out;
-	}
-	rc = do_set_dqblk(dquot, di);
-	dqput(dquot);
-out:
-	return rc;
-}
-EXPORT_SYMBOL(vfs_set_dqblk);
-
-/* Generic routine for getting common part of quota file information */
-int vfs_get_dqinfo(struct super_block *sb, int type, struct if_dqinfo *ii)
-{
-	struct mem_dqinfo *mi;
-  
-	mutex_lock(&sb_dqopt(sb)->dqonoff_mutex);
-	if (!sb_has_quota_active(sb, type)) {
-		mutex_unlock(&sb_dqopt(sb)->dqonoff_mutex);
-		return -ESRCH;
-	}
-	mi = sb_dqopt(sb)->info + type;
-	spin_lock(&dq_data_lock);
-	ii->dqi_bgrace = mi->dqi_bgrace;
-	ii->dqi_igrace = mi->dqi_igrace;
-	ii->dqi_flags = mi->dqi_flags & DQF_MASK;
-	ii->dqi_valid = IIF_ALL;
-	spin_unlock(&dq_data_lock);
-	mutex_unlock(&sb_dqopt(sb)->dqonoff_mutex);
-	return 0;
-}
-EXPORT_SYMBOL(vfs_get_dqinfo);
-
-/* Generic routine for setting common part of quota file information */
-int vfs_set_dqinfo(struct super_block *sb, int type, struct if_dqinfo *ii)
-{
-	struct mem_dqinfo *mi;
-	int err = 0;
-
-	mutex_lock(&sb_dqopt(sb)->dqonoff_mutex);
-	if (!sb_has_quota_active(sb, type)) {
-		err = -ESRCH;
-		goto out;
-	}
-	mi = sb_dqopt(sb)->info + type;
-	spin_lock(&dq_data_lock);
-	if (ii->dqi_valid & IIF_BGRACE)
-		mi->dqi_bgrace = ii->dqi_bgrace;
-	if (ii->dqi_valid & IIF_IGRACE)
-		mi->dqi_igrace = ii->dqi_igrace;
-	if (ii->dqi_valid & IIF_FLAGS)
-		mi->dqi_flags = (mi->dqi_flags & ~DQF_MASK) | (ii->dqi_flags & DQF_MASK);
-	spin_unlock(&dq_data_lock);
-	mark_info_dirty(sb, type);
-	/* Force write to disk */
-	sb->dq_op->write_info(sb, type);
-out:
-	mutex_unlock(&sb_dqopt(sb)->dqonoff_mutex);
-	return err;
-}
-EXPORT_SYMBOL(vfs_set_dqinfo);
-
-struct quotactl_ops vfs_quotactl_ops = {
-	.quota_on	= vfs_quota_on,
-	.quota_off	= vfs_quota_off,
-	.quota_sync	= vfs_quota_sync,
-	.get_info	= vfs_get_dqinfo,
-	.set_info	= vfs_set_dqinfo,
-	.get_dqblk	= vfs_get_dqblk,
-	.set_dqblk	= vfs_set_dqblk
-};
-
-static ctl_table fs_dqstats_table[] = {
-	{
-		.ctl_name	= FS_DQ_LOOKUPS,
-		.procname	= "lookups",
-		.data		= &dqstats.lookups,
-		.maxlen		= sizeof(int),
-		.mode		= 0444,
-		.proc_handler	= &proc_dointvec,
-	},
-	{
-		.ctl_name	= FS_DQ_DROPS,
-		.procname	= "drops",
-		.data		= &dqstats.drops,
-		.maxlen		= sizeof(int),
-		.mode		= 0444,
-		.proc_handler	= &proc_dointvec,
-	},
-	{
-		.ctl_name	= FS_DQ_READS,
-		.procname	= "reads",
-		.data		= &dqstats.reads,
-		.maxlen		= sizeof(int),
-		.mode		= 0444,
-		.proc_handler	= &proc_dointvec,
-	},
-	{
-		.ctl_name	= FS_DQ_WRITES,
-		.procname	= "writes",
-		.data		= &dqstats.writes,
-		.maxlen		= sizeof(int),
-		.mode		= 0444,
-		.proc_handler	= &proc_dointvec,
-	},
-	{
-		.ctl_name	= FS_DQ_CACHE_HITS,
-		.procname	= "cache_hits",
-		.data		= &dqstats.cache_hits,
-		.maxlen		= sizeof(int),
-		.mode		= 0444,
-		.proc_handler	= &proc_dointvec,
-	},
-	{
-		.ctl_name	= FS_DQ_ALLOCATED,
-		.procname	= "allocated_dquots",
-		.data		= &dqstats.allocated_dquots,
-		.maxlen		= sizeof(int),
-		.mode		= 0444,
-		.proc_handler	= &proc_dointvec,
-	},
-	{
-		.ctl_name	= FS_DQ_FREE,
-		.procname	= "free_dquots",
-		.data		= &dqstats.free_dquots,
-		.maxlen		= sizeof(int),
-		.mode		= 0444,
-		.proc_handler	= &proc_dointvec,
-	},
-	{
-		.ctl_name	= FS_DQ_SYNCS,
-		.procname	= "syncs",
-		.data		= &dqstats.syncs,
-		.maxlen		= sizeof(int),
-		.mode		= 0444,
-		.proc_handler	= &proc_dointvec,
-	},
-#ifdef CONFIG_PRINT_QUOTA_WARNING
-	{
-		.ctl_name	= FS_DQ_WARNINGS,
-		.procname	= "warnings",
-		.data		= &flag_print_warnings,
-		.maxlen		= sizeof(int),
-		.mode		= 0644,
-		.proc_handler	= &proc_dointvec,
-	},
-#endif
-	{ .ctl_name = 0 },
-};
-
-static ctl_table fs_table[] = {
-	{
-		.ctl_name	= FS_DQSTATS,
-		.procname	= "quota",
-		.mode		= 0555,
-		.child		= fs_dqstats_table,
-	},
-	{ .ctl_name = 0 },
-};
-
-static ctl_table sys_table[] = {
-	{
-		.ctl_name	= CTL_FS,
-		.procname	= "fs",
-		.mode		= 0555,
-		.child		= fs_table,
-	},
-	{ .ctl_name = 0 },
-};
-
-static int __init dquot_init(void)
-{
-	int i;
-	unsigned long nr_hash, order;
-
-	printk(KERN_NOTICE "VFS: Disk quotas %s\n", __DQUOT_VERSION__);
-
-	register_sysctl_table(sys_table);
-
-	dquot_cachep = kmem_cache_create("dquot",
-			sizeof(struct dquot), sizeof(unsigned long) * 4,
-			(SLAB_HWCACHE_ALIGN|SLAB_RECLAIM_ACCOUNT|
-				SLAB_MEM_SPREAD|SLAB_PANIC),
-			NULL);
-
-	order = 0;
-	dquot_hash = (struct hlist_head *)__get_free_pages(GFP_ATOMIC, order);
-	if (!dquot_hash)
-		panic("Cannot create dquot hash table");
-
-	/* Find power-of-two hlist_heads which can fit into allocation */
-	nr_hash = (1UL << order) * PAGE_SIZE / sizeof(struct hlist_head);
-	dq_hash_bits = 0;
-	do {
-		dq_hash_bits++;
-	} while (nr_hash >> dq_hash_bits);
-	dq_hash_bits--;
-
-	nr_hash = 1UL << dq_hash_bits;
-	dq_hash_mask = nr_hash - 1;
-	for (i = 0; i < nr_hash; i++)
-		INIT_HLIST_HEAD(dquot_hash + i);
-
-	printk("Dquot-cache hash table entries: %ld (order %ld, %ld bytes)\n",
-			nr_hash, order, (PAGE_SIZE << order));
-
-	register_shrinker(&dqcache_shrinker);
-
-#ifdef CONFIG_QUOTA_NETLINK_INTERFACE
-	if (genl_register_family(&quota_genl_family) != 0)
-		printk(KERN_ERR "VFS: Failed to create quota netlink interface.\n");
-#endif
-
-	return 0;
-}
-module_init(dquot_init);