[mirror_ubuntu-focal-kernel.git] / include / linux / quotaops.h

/*
 * 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/smp_lock.h>
#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_dquots(struct super_block *sb, int type);

int dquot_initialize(struct inode *inode, int type);
int dquot_drop(struct inode *inode);

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_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 struct dquot_operations dquot_operations;
extern 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_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;
}

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);
}

/* The following two functions cannot be called inside a transaction */
static inline void vfs_dq_sync(struct super_block *sb)
{
	sync_dquots(sb, -1);
}

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 vfs_dq_sync(struct super_block *sb)
{
}

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 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_sb->s_blocksize_bits);
}

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

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

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

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

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

/*
 * Define uppercase equivalents for compatibility with old function names
 * Can go away when we think all users have been converted (15/04/2008)
 */
#define DQUOT_INIT(inode) vfs_dq_init(inode)
#define DQUOT_DROP(inode) vfs_dq_drop(inode)
#define DQUOT_PREALLOC_SPACE_NODIRTY(inode, nr) \
				vfs_dq_prealloc_space_nodirty(inode, nr)
#define DQUOT_PREALLOC_SPACE(inode, nr) vfs_dq_prealloc_space(inode, nr)
#define DQUOT_ALLOC_SPACE_NODIRTY(inode, nr) \
				vfs_dq_alloc_space_nodirty(inode, nr)
#define DQUOT_ALLOC_SPACE(inode, nr) vfs_dq_alloc_space(inode, nr)
#define DQUOT_PREALLOC_BLOCK_NODIRTY(inode, nr) \
				vfs_dq_prealloc_block_nodirty(inode, nr)
#define DQUOT_PREALLOC_BLOCK(inode, nr) vfs_dq_prealloc_block(inode, nr)
#define DQUOT_ALLOC_BLOCK_NODIRTY(inode, nr) \
				vfs_dq_alloc_block_nodirty(inode, nr)
#define DQUOT_ALLOC_BLOCK(inode, nr) vfs_dq_alloc_block(inode, nr)
#define DQUOT_ALLOC_INODE(inode) vfs_dq_alloc_inode(inode)
#define DQUOT_FREE_SPACE_NODIRTY(inode, nr) \
				vfs_dq_free_space_nodirty(inode, nr)
#define DQUOT_FREE_SPACE(inode, nr) vfs_dq_free_space(inode, nr)
#define DQUOT_FREE_BLOCK_NODIRTY(inode, nr) \
				vfs_dq_free_block_nodirty(inode, nr)
#define DQUOT_FREE_BLOCK(inode, nr) vfs_dq_free_block(inode, nr)
#define DQUOT_FREE_INODE(inode) vfs_dq_free_inode(inode)
#define DQUOT_TRANSFER(inode, iattr) vfs_dq_transfer(inode, iattr)
#define DQUOT_SYNC(sb) vfs_dq_sync(sb)
#define DQUOT_OFF(sb, remount) vfs_dq_off(sb, remount)
#define DQUOT_ON_REMOUNT(sb) vfs_dq_quota_on_remount(sb)

#endif /* _LINUX_QUOTAOPS_ */
Commit	Line	Data
1da177e4 LT	1	/*
	2	* Definitions for diskquota-operations. When diskquota is configured these
	3	* macros expand to the right source-code.
	4	*
	5	* Author: Marco van Wieringen <mvw@planets.elm.net>
1da177e4 LT	6	*/
	7	#ifndef _LINUX_QUOTAOPS_
	8	#define _LINUX_QUOTAOPS_
	9
1da177e4	10	#include <linux/smp_lock.h>
1da177e4 LT	11	#include <linux/fs.h>
1da177e4 LT	12
03b06343 JK	13	static inline struct quota_info sb_dqopt(struct super_block sb)
	14	{
	15	return &sb->s_dquot;
	16	}
74abb989	17
1da177e4 LT	18	#if defined(CONFIG_QUOTA)
	19
	20	/*
	21	* declaration of quota_function calls in kernel.
	22	*/
b85f4b87 JK	23	void sync_dquots(struct super_block *sb, int type);
	24
	25	int dquot_initialize(struct inode *inode, int type);
	26	int dquot_drop(struct inode *inode);
	27
	28	int dquot_alloc_space(struct inode *inode, qsize_t number, int prealloc);
12095460	29	int dquot_alloc_inode(const struct inode *inode, qsize_t number);
b85f4b87 JK	30
b85f4b87 JK	31	int dquot_free_space(struct inode *inode, qsize_t number);
12095460	32	int dquot_free_inode(const struct inode *inode, qsize_t number);
b85f4b87 JK	33
	34	int dquot_transfer(struct inode inode, struct iattr iattr);
	35	int dquot_commit(struct dquot *dquot);
	36	int dquot_acquire(struct dquot *dquot);
	37	int dquot_release(struct dquot *dquot);
	38	int dquot_commit_info(struct super_block *sb, int type);
	39	int dquot_mark_dquot_dirty(struct dquot *dquot);
	40
	41	int vfs_quota_on(struct super_block *sb, int type, int format_id,
	42	char *path, int remount);
f55abc0f JK	43	int vfs_quota_enable(struct inode *inode, int type, int format_id,
f55abc0f JK	44	unsigned int flags);
77e69dac AV	45	int vfs_quota_on_path(struct super_block *sb, int type, int format_id,
77e69dac AV	46	struct path *path);
b85f4b87 JK	47	int vfs_quota_on_mount(struct super_block sb, char qf_name,
	48	int format_id, int type);
	49	int vfs_quota_off(struct super_block *sb, int type, int remount);
f55abc0f	50	int vfs_quota_disable(struct super_block *sb, int type, unsigned int flags);
b85f4b87 JK	51	int vfs_quota_sync(struct super_block *sb, int type);
	52	int vfs_get_dqinfo(struct super_block sb, int type, struct if_dqinfo ii);
	53	int vfs_set_dqinfo(struct super_block sb, int type, struct if_dqinfo ii);
	54	int vfs_get_dqblk(struct super_block sb, int type, qid_t id, struct if_dqblk di);
	55	int vfs_set_dqblk(struct super_block sb, int type, qid_t id, struct if_dqblk di);
	56
	57	void vfs_dq_drop(struct inode *inode);
	58	int vfs_dq_transfer(struct inode inode, struct iattr iattr);
	59	int vfs_dq_quota_on_remount(struct super_block *sb);
1da177e4	60
03b06343 JK	61	static inline struct mem_dqinfo sb_dqinfo(struct super_block sb, int type)
	62	{
	63	return sb_dqopt(sb)->info + type;
	64	}
74abb989 JK	65
	66	/*
	67	* Functions for checking status of quota
	68	*/
	69
f55abc0f	70	static inline int sb_has_quota_usage_enabled(struct super_block *sb, int type)
03b06343	71	{
f55abc0f JK	72	return sb_dqopt(sb)->flags &
f55abc0f JK	73	dquot_state_flag(DQUOT_USAGE_ENABLED, type);
03b06343	74	}
74abb989	75
f55abc0f	76	static inline int sb_has_quota_limits_enabled(struct super_block *sb, int type)
03b06343	77	{
f55abc0f JK	78	return sb_dqopt(sb)->flags &
f55abc0f JK	79	dquot_state_flag(DQUOT_LIMITS_ENABLED, type);
03b06343	80	}
74abb989	81
03b06343 JK	82	static inline int sb_has_quota_suspended(struct super_block *sb, int type)
03b06343 JK	83	{
f55abc0f JK	84	return sb_dqopt(sb)->flags &
f55abc0f JK	85	dquot_state_flag(DQUOT_SUSPENDED, type);
03b06343	86	}
74abb989	87
03b06343 JK	88	static inline int sb_any_quota_suspended(struct super_block *sb)
	89	{
	90	return sb_has_quota_suspended(sb, USRQUOTA) \|\|
	91	sb_has_quota_suspended(sb, GRPQUOTA);
	92	}
74abb989	93
f55abc0f JK	94	/* Does kernel know about any quota information for given sb + type? */
	95	static inline int sb_has_quota_loaded(struct super_block *sb, int type)
	96	{
	97	/* Currently if anything is on, then quota usage is on as well */
	98	return sb_has_quota_usage_enabled(sb, type);
	99	}
	100
	101	static inline int sb_any_quota_loaded(struct super_block *sb)
	102	{
	103	return sb_has_quota_loaded(sb, USRQUOTA) \|\|
	104	sb_has_quota_loaded(sb, GRPQUOTA);
	105	}
	106
	107	static inline int sb_has_quota_active(struct super_block *sb, int type)
	108	{
	109	return sb_has_quota_loaded(sb, type) &&
	110	!sb_has_quota_suspended(sb, type);
	111	}
	112
	113	static inline int sb_any_quota_active(struct super_block *sb)
	114	{
	115	return sb_has_quota_active(sb, USRQUOTA) \|\|
	116	sb_has_quota_active(sb, GRPQUOTA);
	117	}
	118
1da177e4 LT	119	/*
	120	* Operations supported for diskquotas.
	121	*/
	122	extern struct dquot_operations dquot_operations;
	123	extern struct quotactl_ops vfs_quotactl_ops;
	124
	125	#define sb_dquot_ops (&dquot_operations)
	126	#define sb_quotactl_ops (&vfs_quotactl_ops)
	127
	128	/* It is better to call this function outside of any transaction as it might
	129	* need a lot of space in journal for dquot structure allocation. */
b85f4b87	130	static inline void vfs_dq_init(struct inode *inode)
1da177e4 LT	131	{
1da177e4 LT	132	BUG_ON(!inode->i_sb);
f55abc0f	133	if (sb_any_quota_active(inode->i_sb) && !IS_NOQUOTA(inode))
1da177e4 LT	134	inode->i_sb->dq_op->initialize(inode, -1);
	135	}
	136
1da177e4 LT	137	/* The following allocation/freeing/transfer functions must be called inside
1da177e4 LT	138	* a transaction (deadlocks possible otherwise) */
b85f4b87	139	static inline int vfs_dq_prealloc_space_nodirty(struct inode *inode, qsize_t nr)
1da177e4	140	{
f55abc0f	141	if (sb_any_quota_active(inode->i_sb)) {
1da177e4 LT	142	/* Used space is updated in alloc_space() */
	143	if (inode->i_sb->dq_op->alloc_space(inode, nr, 1) == NO_QUOTA)
	144	return 1;
	145	}
	146	else
	147	inode_add_bytes(inode, nr);
	148	return 0;
	149	}
	150
b85f4b87	151	static inline int vfs_dq_prealloc_space(struct inode *inode, qsize_t nr)
1da177e4 LT	152	{
1da177e4 LT	153	int ret;
b85f4b87	154	if (!(ret = vfs_dq_prealloc_space_nodirty(inode, nr)))
1da177e4 LT	155	mark_inode_dirty(inode);
	156	return ret;
	157	}
	158
b85f4b87	159	static inline int vfs_dq_alloc_space_nodirty(struct inode *inode, qsize_t nr)
1da177e4	160	{
f55abc0f	161	if (sb_any_quota_active(inode->i_sb)) {
1da177e4 LT	162	/* Used space is updated in alloc_space() */
	163	if (inode->i_sb->dq_op->alloc_space(inode, nr, 0) == NO_QUOTA)
	164	return 1;
	165	}
	166	else
	167	inode_add_bytes(inode, nr);
	168	return 0;
	169	}
	170
b85f4b87	171	static inline int vfs_dq_alloc_space(struct inode *inode, qsize_t nr)
1da177e4 LT	172	{
1da177e4 LT	173	int ret;
b85f4b87	174	if (!(ret = vfs_dq_alloc_space_nodirty(inode, nr)))
1da177e4 LT	175	mark_inode_dirty(inode);
	176	return ret;
	177	}
	178
b85f4b87	179	static inline int vfs_dq_alloc_inode(struct inode *inode)
1da177e4	180	{
f55abc0f	181	if (sb_any_quota_active(inode->i_sb)) {
b85f4b87	182	vfs_dq_init(inode);
1da177e4 LT	183	if (inode->i_sb->dq_op->alloc_inode(inode, 1) == NO_QUOTA)
	184	return 1;
	185	}
	186	return 0;
	187	}
	188
b85f4b87	189	static inline void vfs_dq_free_space_nodirty(struct inode *inode, qsize_t nr)
1da177e4	190	{
f55abc0f	191	if (sb_any_quota_active(inode->i_sb))
1da177e4 LT	192	inode->i_sb->dq_op->free_space(inode, nr);
	193	else
	194	inode_sub_bytes(inode, nr);
	195	}
	196
b85f4b87	197	static inline void vfs_dq_free_space(struct inode *inode, qsize_t nr)
1da177e4	198	{
b85f4b87	199	vfs_dq_free_space_nodirty(inode, nr);
1da177e4 LT	200	mark_inode_dirty(inode);
	201	}
	202
b85f4b87	203	static inline void vfs_dq_free_inode(struct inode *inode)
1da177e4	204	{
f55abc0f	205	if (sb_any_quota_active(inode->i_sb))
1da177e4 LT	206	inode->i_sb->dq_op->free_inode(inode, 1);
	207	}
	208
1da177e4	209	/* The following two functions cannot be called inside a transaction */
b85f4b87	210	static inline void vfs_dq_sync(struct super_block *sb)
03f6e92b JK	211	{
	212	sync_dquots(sb, -1);
	213	}
1da177e4	214
b85f4b87	215	static inline int vfs_dq_off(struct super_block *sb, int remount)
1da177e4 LT	216	{
	217	int ret = -ENOSYS;
	218
0ff5af83 JK	219	if (sb->s_qcop && sb->s_qcop->quota_off)
	220	ret = sb->s_qcop->quota_off(sb, -1, remount);
	221	return ret;
	222	}
	223
1da177e4 LT	224	#else
1da177e4 LT	225
f55abc0f	226	static inline int sb_has_quota_usage_enabled(struct super_block *sb, int type)
03b06343 JK	227	{
	228	return 0;
	229	}
	230
f55abc0f	231	static inline int sb_has_quota_limits_enabled(struct super_block *sb, int type)
03b06343 JK	232	{
	233	return 0;
	234	}
	235
	236	static inline int sb_has_quota_suspended(struct super_block *sb, int type)
	237	{
	238	return 0;
	239	}
	240
	241	static inline int sb_any_quota_suspended(struct super_block *sb)
	242	{
	243	return 0;
	244	}
74abb989	245
f55abc0f JK	246	/* Does kernel know about any quota information for given sb + type? */
	247	static inline int sb_has_quota_loaded(struct super_block *sb, int type)
	248	{
	249	return 0;
	250	}
	251
	252	static inline int sb_any_quota_loaded(struct super_block *sb)
	253	{
	254	return 0;
	255	}
	256
	257	static inline int sb_has_quota_active(struct super_block *sb, int type)
	258	{
	259	return 0;
	260	}
	261
	262	static inline int sb_any_quota_active(struct super_block *sb)
	263	{
	264	return 0;
	265	}
	266
1da177e4 LT	267	/*
	268	* NO-OP when quota not configured.
	269	*/
	270	#define sb_dquot_ops (NULL)
	271	#define sb_quotactl_ops (NULL)
50f8c370	272
b85f4b87	273	static inline void vfs_dq_init(struct inode *inode)
50f8c370 AM	274	{
	275	}
	276
b85f4b87	277	static inline void vfs_dq_drop(struct inode *inode)
50f8c370 AM	278	{
	279	}
	280
b85f4b87	281	static inline int vfs_dq_alloc_inode(struct inode *inode)
50f8c370 AM	282	{
	283	return 0;
	284	}
	285
b85f4b87	286	static inline void vfs_dq_free_inode(struct inode *inode)
50f8c370 AM	287	{
	288	}
	289
b85f4b87	290	static inline void vfs_dq_sync(struct super_block *sb)
50f8c370 AM	291	{
	292	}
	293
b85f4b87	294	static inline int vfs_dq_off(struct super_block *sb, int remount)
50f8c370 AM	295	{
	296	return 0;
	297	}
	298
b85f4b87	299	static inline int vfs_dq_quota_on_remount(struct super_block *sb)
50f8c370 AM	300	{
	301	return 0;
	302	}
	303
b85f4b87	304	static inline int vfs_dq_transfer(struct inode inode, struct iattr iattr)
50f8c370 AM	305	{
	306	return 0;
	307	}
	308
b85f4b87	309	static inline int vfs_dq_prealloc_space_nodirty(struct inode *inode, qsize_t nr)
1da177e4 LT	310	{
	311	inode_add_bytes(inode, nr);
	312	return 0;
	313	}
	314
b85f4b87	315	static inline int vfs_dq_prealloc_space(struct inode *inode, qsize_t nr)
1da177e4	316	{
b85f4b87	317	vfs_dq_prealloc_space_nodirty(inode, nr);
1da177e4 LT	318	mark_inode_dirty(inode);
	319	return 0;
	320	}
	321
b85f4b87	322	static inline int vfs_dq_alloc_space_nodirty(struct inode *inode, qsize_t nr)
1da177e4 LT	323	{
	324	inode_add_bytes(inode, nr);
	325	return 0;
	326	}
	327
b85f4b87	328	static inline int vfs_dq_alloc_space(struct inode *inode, qsize_t nr)
1da177e4	329	{
b85f4b87	330	vfs_dq_alloc_space_nodirty(inode, nr);
1da177e4 LT	331	mark_inode_dirty(inode);
	332	return 0;
	333	}
	334
b85f4b87	335	static inline void vfs_dq_free_space_nodirty(struct inode *inode, qsize_t nr)
1da177e4 LT	336	{
	337	inode_sub_bytes(inode, nr);
	338	}
	339
b85f4b87	340	static inline void vfs_dq_free_space(struct inode *inode, qsize_t nr)
1da177e4	341	{
b85f4b87	342	vfs_dq_free_space_nodirty(inode, nr);
1da177e4 LT	343	mark_inode_dirty(inode);
	344	}
	345
	346	#endif /* CONFIG_QUOTA */
	347
b85f4b87	348	static inline int vfs_dq_prealloc_block_nodirty(struct inode *inode, qsize_t nr)
03f6e92b	349	{
b85f4b87	350	return vfs_dq_prealloc_space_nodirty(inode,
03f6e92b JK	351	nr << inode->i_sb->s_blocksize_bits);
	352	}
	353
b85f4b87	354	static inline int vfs_dq_prealloc_block(struct inode *inode, qsize_t nr)
03f6e92b	355	{
b85f4b87	356	return vfs_dq_prealloc_space(inode,
03f6e92b JK	357	nr << inode->i_sb->s_blocksize_bits);
	358	}
	359
b85f4b87	360	static inline int vfs_dq_alloc_block_nodirty(struct inode *inode, qsize_t nr)
03f6e92b	361	{
b85f4b87	362	return vfs_dq_alloc_space_nodirty(inode,
03f6e92b JK	363	nr << inode->i_sb->s_blocksize_bits);
	364	}
	365
b85f4b87	366	static inline int vfs_dq_alloc_block(struct inode *inode, qsize_t nr)
03f6e92b	367	{
b85f4b87	368	return vfs_dq_alloc_space(inode,
03f6e92b JK	369	nr << inode->i_sb->s_blocksize_bits);
	370	}
	371
b85f4b87	372	static inline void vfs_dq_free_block_nodirty(struct inode *inode, qsize_t nr)
03f6e92b	373	{
b85f4b87	374	vfs_dq_free_space_nodirty(inode, nr << inode->i_sb->s_blocksize_bits);
03f6e92b JK	375	}
03f6e92b JK	376
b85f4b87	377	static inline void vfs_dq_free_block(struct inode *inode, qsize_t nr)
03f6e92b	378	{
b85f4b87	379	vfs_dq_free_space(inode, nr << inode->i_sb->s_blocksize_bits);
03f6e92b	380	}
1da177e4	381
b85f4b87 JK	382	/*
	383	* Define uppercase equivalents for compatibility with old function names
	384	* Can go away when we think all users have been converted (15/04/2008)
	385	*/
	386	#define DQUOT_INIT(inode) vfs_dq_init(inode)
	387	#define DQUOT_DROP(inode) vfs_dq_drop(inode)
	388	#define DQUOT_PREALLOC_SPACE_NODIRTY(inode, nr) \
	389	vfs_dq_prealloc_space_nodirty(inode, nr)
	390	#define DQUOT_PREALLOC_SPACE(inode, nr) vfs_dq_prealloc_space(inode, nr)
	391	#define DQUOT_ALLOC_SPACE_NODIRTY(inode, nr) \
	392	vfs_dq_alloc_space_nodirty(inode, nr)
	393	#define DQUOT_ALLOC_SPACE(inode, nr) vfs_dq_alloc_space(inode, nr)
	394	#define DQUOT_PREALLOC_BLOCK_NODIRTY(inode, nr) \
	395	vfs_dq_prealloc_block_nodirty(inode, nr)
	396	#define DQUOT_PREALLOC_BLOCK(inode, nr) vfs_dq_prealloc_block(inode, nr)
	397	#define DQUOT_ALLOC_BLOCK_NODIRTY(inode, nr) \
	398	vfs_dq_alloc_block_nodirty(inode, nr)
	399	#define DQUOT_ALLOC_BLOCK(inode, nr) vfs_dq_alloc_block(inode, nr)
	400	#define DQUOT_ALLOC_INODE(inode) vfs_dq_alloc_inode(inode)
	401	#define DQUOT_FREE_SPACE_NODIRTY(inode, nr) \
	402	vfs_dq_free_space_nodirty(inode, nr)
	403	#define DQUOT_FREE_SPACE(inode, nr) vfs_dq_free_space(inode, nr)
	404	#define DQUOT_FREE_BLOCK_NODIRTY(inode, nr) \
	405	vfs_dq_free_block_nodirty(inode, nr)
	406	#define DQUOT_FREE_BLOCK(inode, nr) vfs_dq_free_block(inode, nr)
	407	#define DQUOT_FREE_INODE(inode) vfs_dq_free_inode(inode)
	408	#define DQUOT_TRANSFER(inode, iattr) vfs_dq_transfer(inode, iattr)
	409	#define DQUOT_SYNC(sb) vfs_dq_sync(sb)
	410	#define DQUOT_OFF(sb, remount) vfs_dq_off(sb, remount)
	411	#define DQUOT_ON_REMOUNT(sb) vfs_dq_quota_on_remount(sb)
	412
1da177e4	413	#endif /* _LINUX_QUOTAOPS_ */