include/linux/quotaops.h - kernel/msm-4.9 - Gitiles

 /*
  * Definitions for diskquota-operations. When diskquota is configured these
  * macros expand to the right source-code.
  *
  * Author:  Marco van Wieringen <mvw@planets.elm.net>
  */
 #ifndef _LINUX_QUOTAOPS_
 #define _LINUX_QUOTAOPS_

 #include <linux/fs.h>

 static inline struct quota_info *sb_dqopt(struct super_block *sb)
 {
 	return &sb->s_dquot;
 }

 #if defined(CONFIG_QUOTA)

 /*
  * declaration of quota_function calls in kernel.
  */
 void sync_quota_sb(struct super_block *sb, int type);
 static inline void writeout_quota_sb(struct super_block *sb, int type)
 {
 	if (sb->s_qcop->quota_sync)
 		sb->s_qcop->quota_sync(sb, type);
 }

 int dquot_initialize(struct inode *inode, int type);
 int dquot_drop(struct inode *inode);
 struct dquot *dqget(struct super_block *sb, unsigned int id, int type);
 void dqput(struct dquot *dquot);
 int dquot_scan_active(struct super_block *sb,
 		      int (*fn)(struct dquot *dquot, unsigned long priv),
 		      unsigned long priv);
 struct dquot *dquot_alloc(struct super_block *sb, int type);
 void dquot_destroy(struct dquot *dquot);

 int dquot_alloc_space(struct inode *inode, qsize_t number, int prealloc);
 int dquot_alloc_inode(const struct inode *inode, qsize_t number);

 int dquot_reserve_space(struct inode *inode, qsize_t number, int prealloc);
 int dquot_claim_space(struct inode *inode, qsize_t number);
 void dquot_release_reserved_space(struct inode *inode, qsize_t number);
 qsize_t dquot_get_reserved_space(struct inode *inode);

 int dquot_free_space(struct inode *inode, qsize_t number);
 int dquot_free_inode(const struct inode *inode, qsize_t number);

 int dquot_transfer(struct inode *inode, struct iattr *iattr);
 int dquot_commit(struct dquot *dquot);
 int dquot_acquire(struct dquot *dquot);
 int dquot_release(struct dquot *dquot);
 int dquot_commit_info(struct super_block *sb, int type);
 int dquot_mark_dquot_dirty(struct dquot *dquot);

 int vfs_quota_on(struct super_block *sb, int type, int format_id,
  	char *path, int remount);
 int vfs_quota_enable(struct inode *inode, int type, int format_id,
 	unsigned int flags);
 int vfs_quota_on_path(struct super_block *sb, int type, int format_id,
  	struct path *path);
 int vfs_quota_on_mount(struct super_block *sb, char *qf_name,
  	int format_id, int type);
 int vfs_quota_off(struct super_block *sb, int type, int remount);
 int vfs_quota_disable(struct super_block *sb, int type, unsigned int flags);
 int vfs_quota_sync(struct super_block *sb, int type);
 int vfs_get_dqinfo(struct super_block *sb, int type, struct if_dqinfo *ii);
 int vfs_set_dqinfo(struct super_block *sb, int type, struct if_dqinfo *ii);
 int vfs_get_dqblk(struct super_block *sb, int type, qid_t id, struct if_dqblk *di);
 int vfs_set_dqblk(struct super_block *sb, int type, qid_t id, struct if_dqblk *di);

 void vfs_dq_drop(struct inode *inode);
 int vfs_dq_transfer(struct inode *inode, struct iattr *iattr);
 int vfs_dq_quota_on_remount(struct super_block *sb);

 static inline struct mem_dqinfo *sb_dqinfo(struct super_block *sb, int type)
 {
 	return sb_dqopt(sb)->info + type;
 }

 /*
  * Functions for checking status of quota
  */

 static inline int sb_has_quota_usage_enabled(struct super_block *sb, int type)
 {
 	return sb_dqopt(sb)->flags &
 				dquot_state_flag(DQUOT_USAGE_ENABLED, type);
 }

 static inline int sb_has_quota_limits_enabled(struct super_block *sb, int type)
 {
 	return sb_dqopt(sb)->flags &
 				dquot_state_flag(DQUOT_LIMITS_ENABLED, type);
 }

 static inline int sb_has_quota_suspended(struct super_block *sb, int type)
 {
 	return sb_dqopt(sb)->flags &
 				dquot_state_flag(DQUOT_SUSPENDED, type);
 }

 static inline int sb_any_quota_suspended(struct super_block *sb)
 {
 	return sb_has_quota_suspended(sb, USRQUOTA) ||
 		sb_has_quota_suspended(sb, GRPQUOTA);
 }

 /* Does kernel know about any quota information for given sb + type? */
 static inline int sb_has_quota_loaded(struct super_block *sb, int type)
 {
 	/* Currently if anything is on, then quota usage is on as well */
 	return sb_has_quota_usage_enabled(sb, type);
 }

 static inline int sb_any_quota_loaded(struct super_block *sb)
 {
 	return sb_has_quota_loaded(sb, USRQUOTA) ||
 		sb_has_quota_loaded(sb, GRPQUOTA);
 }

 static inline int sb_has_quota_active(struct super_block *sb, int type)
 {
 	return sb_has_quota_loaded(sb, type) &&
 	       !sb_has_quota_suspended(sb, type);
 }

 static inline int sb_any_quota_active(struct super_block *sb)
 {
 	return sb_has_quota_active(sb, USRQUOTA) ||
 	       sb_has_quota_active(sb, GRPQUOTA);
 }

 /*
  * Operations supported for diskquotas.
  */
 extern const struct dquot_operations dquot_operations;
 extern const struct quotactl_ops vfs_quotactl_ops;

 #define sb_dquot_ops (&dquot_operations)
 #define sb_quotactl_ops (&vfs_quotactl_ops)

 /* It is better to call this function outside of any transaction as it might
  * need a lot of space in journal for dquot structure allocation. */
 static inline void vfs_dq_init(struct inode *inode)
 {
 	BUG_ON(!inode->i_sb);
 	if (sb_any_quota_active(inode->i_sb) && !IS_NOQUOTA(inode))
 		inode->i_sb->dq_op->initialize(inode, -1);
 }

 /* The following allocation/freeing/transfer functions *must* be called inside
  * a transaction (deadlocks possible otherwise) */
 static inline int vfs_dq_prealloc_space_nodirty(struct inode *inode, qsize_t nr)
 {
 	if (sb_any_quota_active(inode->i_sb)) {
 		/* Used space is updated in alloc_space() */
 		if (inode->i_sb->dq_op->alloc_space(inode, nr, 1) == NO_QUOTA)
 			return 1;
 	}
 	else
 		inode_add_bytes(inode, nr);
 	return 0;
 }

 static inline int vfs_dq_prealloc_space(struct inode *inode, qsize_t nr)
 {
 	int ret;
         if (!(ret =  vfs_dq_prealloc_space_nodirty(inode, nr)))
 		mark_inode_dirty(inode);
 	return ret;
 }

 static inline int vfs_dq_alloc_space_nodirty(struct inode *inode, qsize_t nr)
 {
 	if (sb_any_quota_active(inode->i_sb)) {
 		/* Used space is updated in alloc_space() */
 		if (inode->i_sb->dq_op->alloc_space(inode, nr, 0) == NO_QUOTA)
 			return 1;
 	}
 	else
 		inode_add_bytes(inode, nr);
 	return 0;
 }

 static inline int vfs_dq_alloc_space(struct inode *inode, qsize_t nr)
 {
 	int ret;
 	if (!(ret = vfs_dq_alloc_space_nodirty(inode, nr)))
 		mark_inode_dirty(inode);
 	return ret;
 }

 static inline int vfs_dq_reserve_space(struct inode *inode, qsize_t nr)
 {
 	if (sb_any_quota_active(inode->i_sb)) {
 		/* Used space is updated in alloc_space() */
 		if (inode->i_sb->dq_op->reserve_space(inode, nr, 0) == NO_QUOTA)
 			return 1;
 	}
 	return 0;
 }

 static inline int vfs_dq_alloc_inode(struct inode *inode)
 {
 	if (sb_any_quota_active(inode->i_sb)) {
 		vfs_dq_init(inode);
 		if (inode->i_sb->dq_op->alloc_inode(inode, 1) == NO_QUOTA)
 			return 1;
 	}
 	return 0;
 }

 /*
  * Convert in-memory reserved quotas to real consumed quotas
  */
 static inline int vfs_dq_claim_space(struct inode *inode, qsize_t nr)
 {
 	if (sb_any_quota_active(inode->i_sb)) {
 		if (inode->i_sb->dq_op->claim_space(inode, nr) == NO_QUOTA)
 			return 1;
 	} else
 		inode_add_bytes(inode, nr);

 	mark_inode_dirty(inode);
 	return 0;
 }

 /*
  * Release reserved (in-memory) quotas
  */
 static inline
 void vfs_dq_release_reservation_space(struct inode *inode, qsize_t nr)
 {
 	if (sb_any_quota_active(inode->i_sb))
 		inode->i_sb->dq_op->release_rsv(inode, nr);
 }

 static inline void vfs_dq_free_space_nodirty(struct inode *inode, qsize_t nr)
 {
 	if (sb_any_quota_active(inode->i_sb))
 		inode->i_sb->dq_op->free_space(inode, nr);
 	else
 		inode_sub_bytes(inode, nr);
 }

 static inline void vfs_dq_free_space(struct inode *inode, qsize_t nr)
 {
 	vfs_dq_free_space_nodirty(inode, nr);
 	mark_inode_dirty(inode);
 }

 static inline void vfs_dq_free_inode(struct inode *inode)
 {
 	if (sb_any_quota_active(inode->i_sb))
 		inode->i_sb->dq_op->free_inode(inode, 1);
 }

 /* Cannot be called inside a transaction */
 static inline int vfs_dq_off(struct super_block *sb, int remount)
 {
 	int ret = -ENOSYS;

 	if (sb->s_qcop && sb->s_qcop->quota_off)
 		ret = sb->s_qcop->quota_off(sb, -1, remount);
 	return ret;
 }

 #else

 static inline int sb_has_quota_usage_enabled(struct super_block *sb, int type)
 {
 	return 0;
 }

 static inline int sb_has_quota_limits_enabled(struct super_block *sb, int type)
 {
 	return 0;
 }

 static inline int sb_has_quota_suspended(struct super_block *sb, int type)
 {
 	return 0;
 }

 static inline int sb_any_quota_suspended(struct super_block *sb)
 {
 	return 0;
 }

 /* Does kernel know about any quota information for given sb + type? */
 static inline int sb_has_quota_loaded(struct super_block *sb, int type)
 {
 	return 0;
 }

 static inline int sb_any_quota_loaded(struct super_block *sb)
 {
 	return 0;
 }

 static inline int sb_has_quota_active(struct super_block *sb, int type)
 {
 	return 0;
 }

 static inline int sb_any_quota_active(struct super_block *sb)
 {
 	return 0;
 }

 /*
  * NO-OP when quota not configured.
  */
 #define sb_dquot_ops				(NULL)
 #define sb_quotactl_ops				(NULL)

 static inline void vfs_dq_init(struct inode *inode)
 {
 }

 static inline void vfs_dq_drop(struct inode *inode)
 {
 }

 static inline int vfs_dq_alloc_inode(struct inode *inode)
 {
 	return 0;
 }

 static inline void vfs_dq_free_inode(struct inode *inode)
 {
 }

 static inline void sync_quota_sb(struct super_block *sb, int type)
 {
 }

 static inline void writeout_quota_sb(struct super_block *sb, int type)
 {
 }

 static inline int vfs_dq_off(struct super_block *sb, int remount)
 {
 	return 0;
 }

 static inline int vfs_dq_quota_on_remount(struct super_block *sb)
 {
 	return 0;
 }

 static inline int vfs_dq_transfer(struct inode *inode, struct iattr *iattr)
 {
 	return 0;
 }

 static inline int vfs_dq_prealloc_space_nodirty(struct inode *inode, qsize_t nr)
 {
 	inode_add_bytes(inode, nr);
 	return 0;
 }

 static inline int vfs_dq_prealloc_space(struct inode *inode, qsize_t nr)
 {
 	vfs_dq_prealloc_space_nodirty(inode, nr);
 	mark_inode_dirty(inode);
 	return 0;
 }

 static inline int vfs_dq_alloc_space_nodirty(struct inode *inode, qsize_t nr)
 {
 	inode_add_bytes(inode, nr);
 	return 0;
 }

 static inline int vfs_dq_alloc_space(struct inode *inode, qsize_t nr)
 {
 	vfs_dq_alloc_space_nodirty(inode, nr);
 	mark_inode_dirty(inode);
 	return 0;
 }

 static inline int vfs_dq_reserve_space(struct inode *inode, qsize_t nr)
 {
 	return 0;
 }

 static inline int vfs_dq_claim_space(struct inode *inode, qsize_t nr)
 {
 	return vfs_dq_alloc_space(inode, nr);
 }

 static inline
 int vfs_dq_release_reservation_space(struct inode *inode, qsize_t nr)
 {
 	return 0;
 }

 static inline void vfs_dq_free_space_nodirty(struct inode *inode, qsize_t nr)
 {
 	inode_sub_bytes(inode, nr);
 }

 static inline void vfs_dq_free_space(struct inode *inode, qsize_t nr)
 {
 	vfs_dq_free_space_nodirty(inode, nr);
 	mark_inode_dirty(inode);
 }

 #endif /* CONFIG_QUOTA */

 static inline int vfs_dq_prealloc_block_nodirty(struct inode *inode, qsize_t nr)
 {
 	return vfs_dq_prealloc_space_nodirty(inode, nr << inode->i_blkbits);
 }

 static inline int vfs_dq_prealloc_block(struct inode *inode, qsize_t nr)
 {
 	return vfs_dq_prealloc_space(inode, nr << inode->i_blkbits);
 }

 static inline int vfs_dq_alloc_block_nodirty(struct inode *inode, qsize_t nr)
 {
 	return vfs_dq_alloc_space_nodirty(inode, nr << inode->i_blkbits);
 }

 static inline int vfs_dq_alloc_block(struct inode *inode, qsize_t nr)
 {
 	return vfs_dq_alloc_space(inode, nr << inode->i_blkbits);
 }

 static inline int vfs_dq_reserve_block(struct inode *inode, qsize_t nr)
 {
 	return vfs_dq_reserve_space(inode, nr << inode->i_blkbits);
 }

 static inline int vfs_dq_claim_block(struct inode *inode, qsize_t nr)
 {
 	return vfs_dq_claim_space(inode, nr << inode->i_blkbits);
 }

 static inline
 void vfs_dq_release_reservation_block(struct inode *inode, qsize_t nr)
 {
 	vfs_dq_release_reservation_space(inode, nr << inode->i_blkbits);
 }

 static inline void vfs_dq_free_block_nodirty(struct inode *inode, qsize_t nr)
 {
 	vfs_dq_free_space_nodirty(inode, nr << inode->i_blkbits);
 }

 static inline void vfs_dq_free_block(struct inode *inode, qsize_t nr)
 {
 	vfs_dq_free_space(inode, nr << inode->i_blkbits);
 }

 #endif /* _LINUX_QUOTAOPS_ */
	/*
	* Definitions for diskquota-operations. When diskquota is configured these
	* macros expand to the right source-code.
	*
	* Author: Marco van Wieringen <mvw@planets.elm.net>
	*/
	#ifndef _LINUX_QUOTAOPS_
	#define _LINUX_QUOTAOPS_

	#include <linux/fs.h>

	static inline struct quota_info sb_dqopt(struct super_block sb)
	{
	return &sb->s_dquot;
	}

	#if defined(CONFIG_QUOTA)

	/*
	* declaration of quota_function calls in kernel.
	*/
	void sync_quota_sb(struct super_block *sb, int type);
	static inline void writeout_quota_sb(struct super_block *sb, int type)
	{
	if (sb->s_qcop->quota_sync)
	sb->s_qcop->quota_sync(sb, type);
	}

	int dquot_initialize(struct inode *inode, int type);
	int dquot_drop(struct inode *inode);
	struct dquot dqget(struct super_block sb, unsigned int id, int type);
	void dqput(struct dquot *dquot);
	int dquot_scan_active(struct super_block *sb,
	int (fn)(struct dquot dquot, unsigned long priv),
	unsigned long priv);
	struct dquot dquot_alloc(struct super_block sb, int type);
	void dquot_destroy(struct dquot *dquot);

	int dquot_alloc_space(struct inode *inode, qsize_t number, int prealloc);
	int dquot_alloc_inode(const struct inode *inode, qsize_t number);

	int dquot_reserve_space(struct inode *inode, qsize_t number, int prealloc);
	int dquot_claim_space(struct inode *inode, qsize_t number);
	void dquot_release_reserved_space(struct inode *inode, qsize_t number);
	qsize_t dquot_get_reserved_space(struct inode *inode);

	int dquot_free_space(struct inode *inode, qsize_t number);
	int dquot_free_inode(const struct inode *inode, qsize_t number);

	int dquot_transfer(struct inode inode, struct iattr iattr);
	int dquot_commit(struct dquot *dquot);
	int dquot_acquire(struct dquot *dquot);
	int dquot_release(struct dquot *dquot);
	int dquot_commit_info(struct super_block *sb, int type);
	int dquot_mark_dquot_dirty(struct dquot *dquot);

	int vfs_quota_on(struct super_block *sb, int type, int format_id,
	char *path, int remount);
	int vfs_quota_enable(struct inode *inode, int type, int format_id,
	unsigned int flags);
	int vfs_quota_on_path(struct super_block *sb, int type, int format_id,
	struct path *path);
	int vfs_quota_on_mount(struct super_block sb, char qf_name,
	int format_id, int type);
	int vfs_quota_off(struct super_block *sb, int type, int remount);
	int vfs_quota_disable(struct super_block *sb, int type, unsigned int flags);
	int vfs_quota_sync(struct super_block *sb, int type);
	int vfs_get_dqinfo(struct super_block sb, int type, struct if_dqinfo ii);
	int vfs_set_dqinfo(struct super_block sb, int type, struct if_dqinfo ii);
	int vfs_get_dqblk(struct super_block sb, int type, qid_t id, struct if_dqblk di);
	int vfs_set_dqblk(struct super_block sb, int type, qid_t id, struct if_dqblk di);

	void vfs_dq_drop(struct inode *inode);
	int vfs_dq_transfer(struct inode inode, struct iattr iattr);
	int vfs_dq_quota_on_remount(struct super_block *sb);

	static inline struct mem_dqinfo sb_dqinfo(struct super_block sb, int type)
	{
	return sb_dqopt(sb)->info + type;
	}

	/*
	* Functions for checking status of quota
	*/

	static inline int sb_has_quota_usage_enabled(struct super_block *sb, int type)
	{
	return sb_dqopt(sb)->flags &
	dquot_state_flag(DQUOT_USAGE_ENABLED, type);
	}

	static inline int sb_has_quota_limits_enabled(struct super_block *sb, int type)
	{
	return sb_dqopt(sb)->flags &
	dquot_state_flag(DQUOT_LIMITS_ENABLED, type);
	}

	static inline int sb_has_quota_suspended(struct super_block *sb, int type)
	{
	return sb_dqopt(sb)->flags &
	dquot_state_flag(DQUOT_SUSPENDED, type);
	}

	static inline int sb_any_quota_suspended(struct super_block *sb)
	{
	return sb_has_quota_suspended(sb, USRQUOTA) \|\|
	sb_has_quota_suspended(sb, GRPQUOTA);
	}

	/* Does kernel know about any quota information for given sb + type? */
	static inline int sb_has_quota_loaded(struct super_block *sb, int type)
	{
	/* Currently if anything is on, then quota usage is on as well */
	return sb_has_quota_usage_enabled(sb, type);
	}

	static inline int sb_any_quota_loaded(struct super_block *sb)
	{
	return sb_has_quota_loaded(sb, USRQUOTA) \|\|
	sb_has_quota_loaded(sb, GRPQUOTA);
	}

	static inline int sb_has_quota_active(struct super_block *sb, int type)
	{
	return sb_has_quota_loaded(sb, type) &&
	!sb_has_quota_suspended(sb, type);
	}

	static inline int sb_any_quota_active(struct super_block *sb)
	{
	return sb_has_quota_active(sb, USRQUOTA) \|\|
	sb_has_quota_active(sb, GRPQUOTA);
	}

	/*
	* Operations supported for diskquotas.
	*/
	extern const struct dquot_operations dquot_operations;
	extern const struct quotactl_ops vfs_quotactl_ops;

	#define sb_dquot_ops (&dquot_operations)
	#define sb_quotactl_ops (&vfs_quotactl_ops)

	/* It is better to call this function outside of any transaction as it might
	* need a lot of space in journal for dquot structure allocation. */
	static inline void vfs_dq_init(struct inode *inode)
	{
	BUG_ON(!inode->i_sb);
	if (sb_any_quota_active(inode->i_sb) && !IS_NOQUOTA(inode))
	inode->i_sb->dq_op->initialize(inode, -1);
	}

	/* The following allocation/freeing/transfer functions must be called inside
	* a transaction (deadlocks possible otherwise) */
	static inline int vfs_dq_prealloc_space_nodirty(struct inode *inode, qsize_t nr)
	{
	if (sb_any_quota_active(inode->i_sb)) {
	/* Used space is updated in alloc_space() */
	if (inode->i_sb->dq_op->alloc_space(inode, nr, 1) == NO_QUOTA)
	return 1;
	}
	else
	inode_add_bytes(inode, nr);
	return 0;
	}

	static inline int vfs_dq_prealloc_space(struct inode *inode, qsize_t nr)
	{
	int ret;
	if (!(ret = vfs_dq_prealloc_space_nodirty(inode, nr)))
	mark_inode_dirty(inode);
	return ret;
	}

	static inline int vfs_dq_alloc_space_nodirty(struct inode *inode, qsize_t nr)
	{
	if (sb_any_quota_active(inode->i_sb)) {
	/* Used space is updated in alloc_space() */
	if (inode->i_sb->dq_op->alloc_space(inode, nr, 0) == NO_QUOTA)
	return 1;
	}
	else
	inode_add_bytes(inode, nr);
	return 0;
	}

	static inline int vfs_dq_alloc_space(struct inode *inode, qsize_t nr)
	{
	int ret;
	if (!(ret = vfs_dq_alloc_space_nodirty(inode, nr)))
	mark_inode_dirty(inode);
	return ret;
	}

	static inline int vfs_dq_reserve_space(struct inode *inode, qsize_t nr)
	{
	if (sb_any_quota_active(inode->i_sb)) {
	/* Used space is updated in alloc_space() */
	if (inode->i_sb->dq_op->reserve_space(inode, nr, 0) == NO_QUOTA)
	return 1;
	}
	return 0;
	}

	static inline int vfs_dq_alloc_inode(struct inode *inode)
	{
	if (sb_any_quota_active(inode->i_sb)) {
	vfs_dq_init(inode);
	if (inode->i_sb->dq_op->alloc_inode(inode, 1) == NO_QUOTA)
	return 1;
	}
	return 0;
	}

	/*
	* Convert in-memory reserved quotas to real consumed quotas
	*/
	static inline int vfs_dq_claim_space(struct inode *inode, qsize_t nr)
	{
	if (sb_any_quota_active(inode->i_sb)) {
	if (inode->i_sb->dq_op->claim_space(inode, nr) == NO_QUOTA)
	return 1;
	} else
	inode_add_bytes(inode, nr);

	mark_inode_dirty(inode);
	return 0;
	}

	/*
	* Release reserved (in-memory) quotas
	*/
	static inline
	void vfs_dq_release_reservation_space(struct inode *inode, qsize_t nr)
	{
	if (sb_any_quota_active(inode->i_sb))
	inode->i_sb->dq_op->release_rsv(inode, nr);
	}

	static inline void vfs_dq_free_space_nodirty(struct inode *inode, qsize_t nr)
	{
	if (sb_any_quota_active(inode->i_sb))
	inode->i_sb->dq_op->free_space(inode, nr);
	else
	inode_sub_bytes(inode, nr);
	}

	static inline void vfs_dq_free_space(struct inode *inode, qsize_t nr)
	{
	vfs_dq_free_space_nodirty(inode, nr);
	mark_inode_dirty(inode);
	}

	static inline void vfs_dq_free_inode(struct inode *inode)
	{
	if (sb_any_quota_active(inode->i_sb))
	inode->i_sb->dq_op->free_inode(inode, 1);
	}

	/* Cannot be called inside a transaction */
	static inline int vfs_dq_off(struct super_block *sb, int remount)
	{
	int ret = -ENOSYS;

	if (sb->s_qcop && sb->s_qcop->quota_off)
	ret = sb->s_qcop->quota_off(sb, -1, remount);
	return ret;
	}

	#else

	static inline int sb_has_quota_usage_enabled(struct super_block *sb, int type)
	{
	return 0;
	}

	static inline int sb_has_quota_limits_enabled(struct super_block *sb, int type)
	{
	return 0;
	}

	static inline int sb_has_quota_suspended(struct super_block *sb, int type)
	{
	return 0;
	}

	static inline int sb_any_quota_suspended(struct super_block *sb)
	{
	return 0;
	}

	/* Does kernel know about any quota information for given sb + type? */
	static inline int sb_has_quota_loaded(struct super_block *sb, int type)
	{
	return 0;
	}

	static inline int sb_any_quota_loaded(struct super_block *sb)
	{
	return 0;
	}

	static inline int sb_has_quota_active(struct super_block *sb, int type)
	{
	return 0;
	}

	static inline int sb_any_quota_active(struct super_block *sb)
	{
	return 0;
	}

	/*
	* NO-OP when quota not configured.
	*/
	#define sb_dquot_ops (NULL)
	#define sb_quotactl_ops (NULL)

	static inline void vfs_dq_init(struct inode *inode)
	{
	}

	static inline void vfs_dq_drop(struct inode *inode)
	{
	}

	static inline int vfs_dq_alloc_inode(struct inode *inode)
	{
	return 0;
	}

	static inline void vfs_dq_free_inode(struct inode *inode)
	{
	}

	static inline void sync_quota_sb(struct super_block *sb, int type)
	{
	}

	static inline void writeout_quota_sb(struct super_block *sb, int type)
	{
	}

	static inline int vfs_dq_off(struct super_block *sb, int remount)
	{
	return 0;
	}

	static inline int vfs_dq_quota_on_remount(struct super_block *sb)
	{
	return 0;
	}

	static inline int vfs_dq_transfer(struct inode inode, struct iattr iattr)
	{
	return 0;
	}

	static inline int vfs_dq_prealloc_space_nodirty(struct inode *inode, qsize_t nr)
	{
	inode_add_bytes(inode, nr);
	return 0;
	}

	static inline int vfs_dq_prealloc_space(struct inode *inode, qsize_t nr)
	{
	vfs_dq_prealloc_space_nodirty(inode, nr);
	mark_inode_dirty(inode);
	return 0;
	}

	static inline int vfs_dq_alloc_space_nodirty(struct inode *inode, qsize_t nr)
	{
	inode_add_bytes(inode, nr);
	return 0;
	}

	static inline int vfs_dq_alloc_space(struct inode *inode, qsize_t nr)
	{
	vfs_dq_alloc_space_nodirty(inode, nr);
	mark_inode_dirty(inode);
	return 0;
	}

	static inline int vfs_dq_reserve_space(struct inode *inode, qsize_t nr)
	{
	return 0;
	}

	static inline int vfs_dq_claim_space(struct inode *inode, qsize_t nr)
	{
	return vfs_dq_alloc_space(inode, nr);
	}

	static inline
	int vfs_dq_release_reservation_space(struct inode *inode, qsize_t nr)
	{
	return 0;
	}

	static inline void vfs_dq_free_space_nodirty(struct inode *inode, qsize_t nr)
	{
	inode_sub_bytes(inode, nr);
	}

	static inline void vfs_dq_free_space(struct inode *inode, qsize_t nr)
	{
	vfs_dq_free_space_nodirty(inode, nr);
	mark_inode_dirty(inode);
	}

	#endif /* CONFIG_QUOTA */

	static inline int vfs_dq_prealloc_block_nodirty(struct inode *inode, qsize_t nr)
	{
	return vfs_dq_prealloc_space_nodirty(inode, nr << inode->i_blkbits);
	}

	static inline int vfs_dq_prealloc_block(struct inode *inode, qsize_t nr)
	{
	return vfs_dq_prealloc_space(inode, nr << inode->i_blkbits);
	}

	static inline int vfs_dq_alloc_block_nodirty(struct inode *inode, qsize_t nr)
	{
	return vfs_dq_alloc_space_nodirty(inode, nr << inode->i_blkbits);
	}

	static inline int vfs_dq_alloc_block(struct inode *inode, qsize_t nr)
	{
	return vfs_dq_alloc_space(inode, nr << inode->i_blkbits);
	}

	static inline int vfs_dq_reserve_block(struct inode *inode, qsize_t nr)
	{
	return vfs_dq_reserve_space(inode, nr << inode->i_blkbits);
	}

	static inline int vfs_dq_claim_block(struct inode *inode, qsize_t nr)
	{
	return vfs_dq_claim_space(inode, nr << inode->i_blkbits);
	}

	static inline
	void vfs_dq_release_reservation_block(struct inode *inode, qsize_t nr)
	{
	vfs_dq_release_reservation_space(inode, nr << inode->i_blkbits);
	}

	static inline void vfs_dq_free_block_nodirty(struct inode *inode, qsize_t nr)
	{
	vfs_dq_free_space_nodirty(inode, nr << inode->i_blkbits);
	}

	static inline void vfs_dq_free_block(struct inode *inode, qsize_t nr)
	{
	vfs_dq_free_space(inode, nr << inode->i_blkbits);
	}

	#endif /* _LINUX_QUOTAOPS_ */