[mirror_ubuntu-artful-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_drop_locked(struct inode *inode);
struct dquot *dqget(struct super_block *sb, unsigned int id, int type);
void dqput(struct dquot *dquot);
int dquot_is_cached(struct super_block *sb, unsigned int id, int type);
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_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);
3d9ea253 JK	27	int dquot_drop_locked(struct inode *inode);
	28	struct dquot dqget(struct super_block sb, unsigned int id, int type);
	29	void dqput(struct dquot *dquot);
	30	int dquot_is_cached(struct super_block *sb, unsigned int id, int type);
12c77527 JK	31	int dquot_scan_active(struct super_block *sb,
	32	int (fn)(struct dquot dquot, unsigned long priv),
	33	unsigned long priv);
7d9056ba JK	34	struct dquot dquot_alloc(struct super_block sb, int type);
7d9056ba JK	35	void dquot_destroy(struct dquot *dquot);
b85f4b87 JK	36
b85f4b87 JK	37	int dquot_alloc_space(struct inode *inode, qsize_t number, int prealloc);
12095460	38	int dquot_alloc_inode(const struct inode *inode, qsize_t number);
b85f4b87 JK	39
b85f4b87 JK	40	int dquot_free_space(struct inode *inode, qsize_t number);
12095460	41	int dquot_free_inode(const struct inode *inode, qsize_t number);
b85f4b87 JK	42
	43	int dquot_transfer(struct inode inode, struct iattr iattr);
	44	int dquot_commit(struct dquot *dquot);
	45	int dquot_acquire(struct dquot *dquot);
	46	int dquot_release(struct dquot *dquot);
	47	int dquot_commit_info(struct super_block *sb, int type);
	48	int dquot_mark_dquot_dirty(struct dquot *dquot);
	49
	50	int vfs_quota_on(struct super_block *sb, int type, int format_id,
	51	char *path, int remount);
f55abc0f JK	52	int vfs_quota_enable(struct inode *inode, int type, int format_id,
f55abc0f JK	53	unsigned int flags);
77e69dac AV	54	int vfs_quota_on_path(struct super_block *sb, int type, int format_id,
77e69dac AV	55	struct path *path);
b85f4b87 JK	56	int vfs_quota_on_mount(struct super_block sb, char qf_name,
	57	int format_id, int type);
	58	int vfs_quota_off(struct super_block *sb, int type, int remount);
f55abc0f	59	int vfs_quota_disable(struct super_block *sb, int type, unsigned int flags);
b85f4b87 JK	60	int vfs_quota_sync(struct super_block *sb, int type);
	61	int vfs_get_dqinfo(struct super_block sb, int type, struct if_dqinfo ii);
	62	int vfs_set_dqinfo(struct super_block sb, int type, struct if_dqinfo ii);
	63	int vfs_get_dqblk(struct super_block sb, int type, qid_t id, struct if_dqblk di);
	64	int vfs_set_dqblk(struct super_block sb, int type, qid_t id, struct if_dqblk di);
	65
	66	void vfs_dq_drop(struct inode *inode);
	67	int vfs_dq_transfer(struct inode inode, struct iattr iattr);
	68	int vfs_dq_quota_on_remount(struct super_block *sb);
1da177e4	69
03b06343 JK	70	static inline struct mem_dqinfo sb_dqinfo(struct super_block sb, int type)
	71	{
	72	return sb_dqopt(sb)->info + type;
	73	}
74abb989 JK	74
	75	/*
	76	* Functions for checking status of quota
	77	*/
	78
f55abc0f	79	static inline int sb_has_quota_usage_enabled(struct super_block *sb, int type)
03b06343	80	{
f55abc0f JK	81	return sb_dqopt(sb)->flags &
f55abc0f JK	82	dquot_state_flag(DQUOT_USAGE_ENABLED, type);
03b06343	83	}
74abb989	84
f55abc0f	85	static inline int sb_has_quota_limits_enabled(struct super_block *sb, int type)
03b06343	86	{
f55abc0f JK	87	return sb_dqopt(sb)->flags &
f55abc0f JK	88	dquot_state_flag(DQUOT_LIMITS_ENABLED, type);
03b06343	89	}
74abb989	90
03b06343 JK	91	static inline int sb_has_quota_suspended(struct super_block *sb, int type)
03b06343 JK	92	{
f55abc0f JK	93	return sb_dqopt(sb)->flags &
f55abc0f JK	94	dquot_state_flag(DQUOT_SUSPENDED, type);
03b06343	95	}
74abb989	96
03b06343 JK	97	static inline int sb_any_quota_suspended(struct super_block *sb)
	98	{
	99	return sb_has_quota_suspended(sb, USRQUOTA) \|\|
	100	sb_has_quota_suspended(sb, GRPQUOTA);
	101	}
74abb989	102
f55abc0f JK	103	/* Does kernel know about any quota information for given sb + type? */
	104	static inline int sb_has_quota_loaded(struct super_block *sb, int type)
	105	{
	106	/* Currently if anything is on, then quota usage is on as well */
	107	return sb_has_quota_usage_enabled(sb, type);
	108	}
	109
	110	static inline int sb_any_quota_loaded(struct super_block *sb)
	111	{
	112	return sb_has_quota_loaded(sb, USRQUOTA) \|\|
	113	sb_has_quota_loaded(sb, GRPQUOTA);
	114	}
	115
	116	static inline int sb_has_quota_active(struct super_block *sb, int type)
	117	{
	118	return sb_has_quota_loaded(sb, type) &&
	119	!sb_has_quota_suspended(sb, type);
	120	}
	121
	122	static inline int sb_any_quota_active(struct super_block *sb)
	123	{
	124	return sb_has_quota_active(sb, USRQUOTA) \|\|
	125	sb_has_quota_active(sb, GRPQUOTA);
	126	}
	127
1da177e4 LT	128	/*
	129	* Operations supported for diskquotas.
	130	*/
	131	extern struct dquot_operations dquot_operations;
	132	extern struct quotactl_ops vfs_quotactl_ops;
	133
	134	#define sb_dquot_ops (&dquot_operations)
	135	#define sb_quotactl_ops (&vfs_quotactl_ops)
	136
	137	/* It is better to call this function outside of any transaction as it might
	138	* need a lot of space in journal for dquot structure allocation. */
b85f4b87	139	static inline void vfs_dq_init(struct inode *inode)
1da177e4 LT	140	{
1da177e4 LT	141	BUG_ON(!inode->i_sb);
f55abc0f	142	if (sb_any_quota_active(inode->i_sb) && !IS_NOQUOTA(inode))
1da177e4 LT	143	inode->i_sb->dq_op->initialize(inode, -1);
	144	}
	145
1da177e4 LT	146	/* The following allocation/freeing/transfer functions must be called inside
1da177e4 LT	147	* a transaction (deadlocks possible otherwise) */
b85f4b87	148	static inline int vfs_dq_prealloc_space_nodirty(struct inode *inode, qsize_t nr)
1da177e4	149	{
f55abc0f	150	if (sb_any_quota_active(inode->i_sb)) {
1da177e4 LT	151	/* Used space is updated in alloc_space() */
	152	if (inode->i_sb->dq_op->alloc_space(inode, nr, 1) == NO_QUOTA)
	153	return 1;
	154	}
	155	else
	156	inode_add_bytes(inode, nr);
	157	return 0;
	158	}
	159
b85f4b87	160	static inline int vfs_dq_prealloc_space(struct inode *inode, qsize_t nr)
1da177e4 LT	161	{
1da177e4 LT	162	int ret;
b85f4b87	163	if (!(ret = vfs_dq_prealloc_space_nodirty(inode, nr)))
1da177e4 LT	164	mark_inode_dirty(inode);
	165	return ret;
	166	}
	167
b85f4b87	168	static inline int vfs_dq_alloc_space_nodirty(struct inode *inode, qsize_t nr)
1da177e4	169	{
f55abc0f	170	if (sb_any_quota_active(inode->i_sb)) {
1da177e4 LT	171	/* Used space is updated in alloc_space() */
	172	if (inode->i_sb->dq_op->alloc_space(inode, nr, 0) == NO_QUOTA)
	173	return 1;
	174	}
	175	else
	176	inode_add_bytes(inode, nr);
	177	return 0;
	178	}
	179
b85f4b87	180	static inline int vfs_dq_alloc_space(struct inode *inode, qsize_t nr)
1da177e4 LT	181	{
1da177e4 LT	182	int ret;
b85f4b87	183	if (!(ret = vfs_dq_alloc_space_nodirty(inode, nr)))
1da177e4 LT	184	mark_inode_dirty(inode);
	185	return ret;
	186	}
	187
b85f4b87	188	static inline int vfs_dq_alloc_inode(struct inode *inode)
1da177e4	189	{
f55abc0f	190	if (sb_any_quota_active(inode->i_sb)) {
b85f4b87	191	vfs_dq_init(inode);
1da177e4 LT	192	if (inode->i_sb->dq_op->alloc_inode(inode, 1) == NO_QUOTA)
	193	return 1;
	194	}
	195	return 0;
	196	}
	197
b85f4b87	198	static inline void vfs_dq_free_space_nodirty(struct inode *inode, qsize_t nr)
1da177e4	199	{
f55abc0f	200	if (sb_any_quota_active(inode->i_sb))
1da177e4 LT	201	inode->i_sb->dq_op->free_space(inode, nr);
	202	else
	203	inode_sub_bytes(inode, nr);
	204	}
	205
b85f4b87	206	static inline void vfs_dq_free_space(struct inode *inode, qsize_t nr)
1da177e4	207	{
b85f4b87	208	vfs_dq_free_space_nodirty(inode, nr);
1da177e4 LT	209	mark_inode_dirty(inode);
	210	}
	211
b85f4b87	212	static inline void vfs_dq_free_inode(struct inode *inode)
1da177e4	213	{
f55abc0f	214	if (sb_any_quota_active(inode->i_sb))
1da177e4 LT	215	inode->i_sb->dq_op->free_inode(inode, 1);
	216	}
	217
1da177e4	218	/* The following two functions cannot be called inside a transaction */
b85f4b87	219	static inline void vfs_dq_sync(struct super_block *sb)
03f6e92b JK	220	{
	221	sync_dquots(sb, -1);
	222	}
1da177e4	223
b85f4b87	224	static inline int vfs_dq_off(struct super_block *sb, int remount)
1da177e4 LT	225	{
	226	int ret = -ENOSYS;
	227
0ff5af83 JK	228	if (sb->s_qcop && sb->s_qcop->quota_off)
	229	ret = sb->s_qcop->quota_off(sb, -1, remount);
	230	return ret;
	231	}
	232
1da177e4 LT	233	#else
1da177e4 LT	234
f55abc0f	235	static inline int sb_has_quota_usage_enabled(struct super_block *sb, int type)
03b06343 JK	236	{
	237	return 0;
	238	}
	239
f55abc0f	240	static inline int sb_has_quota_limits_enabled(struct super_block *sb, int type)
03b06343 JK	241	{
	242	return 0;
	243	}
	244
	245	static inline int sb_has_quota_suspended(struct super_block *sb, int type)
	246	{
	247	return 0;
	248	}
	249
	250	static inline int sb_any_quota_suspended(struct super_block *sb)
	251	{
	252	return 0;
	253	}
74abb989	254
f55abc0f JK	255	/* Does kernel know about any quota information for given sb + type? */
	256	static inline int sb_has_quota_loaded(struct super_block *sb, int type)
	257	{
	258	return 0;
	259	}
	260
	261	static inline int sb_any_quota_loaded(struct super_block *sb)
	262	{
	263	return 0;
	264	}
	265
	266	static inline int sb_has_quota_active(struct super_block *sb, int type)
	267	{
	268	return 0;
	269	}
	270
	271	static inline int sb_any_quota_active(struct super_block *sb)
	272	{
	273	return 0;
	274	}
	275
1da177e4 LT	276	/*
	277	* NO-OP when quota not configured.
	278	*/
	279	#define sb_dquot_ops (NULL)
	280	#define sb_quotactl_ops (NULL)
50f8c370	281
b85f4b87	282	static inline void vfs_dq_init(struct inode *inode)
50f8c370 AM	283	{
	284	}
	285
b85f4b87	286	static inline void vfs_dq_drop(struct inode *inode)
50f8c370 AM	287	{
	288	}
	289
b85f4b87	290	static inline int vfs_dq_alloc_inode(struct inode *inode)
50f8c370 AM	291	{
	292	return 0;
	293	}
	294
b85f4b87	295	static inline void vfs_dq_free_inode(struct inode *inode)
50f8c370 AM	296	{
	297	}
	298
b85f4b87	299	static inline void vfs_dq_sync(struct super_block *sb)
50f8c370 AM	300	{
	301	}
	302
b85f4b87	303	static inline int vfs_dq_off(struct super_block *sb, int remount)
50f8c370 AM	304	{
	305	return 0;
	306	}
	307
b85f4b87	308	static inline int vfs_dq_quota_on_remount(struct super_block *sb)
50f8c370 AM	309	{
	310	return 0;
	311	}
	312
b85f4b87	313	static inline int vfs_dq_transfer(struct inode inode, struct iattr iattr)
50f8c370 AM	314	{
	315	return 0;
	316	}
	317
b85f4b87	318	static inline int vfs_dq_prealloc_space_nodirty(struct inode *inode, qsize_t nr)
1da177e4 LT	319	{
	320	inode_add_bytes(inode, nr);
	321	return 0;
	322	}
	323
b85f4b87	324	static inline int vfs_dq_prealloc_space(struct inode *inode, qsize_t nr)
1da177e4	325	{
b85f4b87	326	vfs_dq_prealloc_space_nodirty(inode, nr);
1da177e4 LT	327	mark_inode_dirty(inode);
	328	return 0;
	329	}
	330
b85f4b87	331	static inline int vfs_dq_alloc_space_nodirty(struct inode *inode, qsize_t nr)
1da177e4 LT	332	{
	333	inode_add_bytes(inode, nr);
	334	return 0;
	335	}
	336
b85f4b87	337	static inline int vfs_dq_alloc_space(struct inode *inode, qsize_t nr)
1da177e4	338	{
b85f4b87	339	vfs_dq_alloc_space_nodirty(inode, nr);
1da177e4 LT	340	mark_inode_dirty(inode);
	341	return 0;
	342	}
	343
b85f4b87	344	static inline void vfs_dq_free_space_nodirty(struct inode *inode, qsize_t nr)
1da177e4 LT	345	{
	346	inode_sub_bytes(inode, nr);
	347	}
	348
b85f4b87	349	static inline void vfs_dq_free_space(struct inode *inode, qsize_t nr)
1da177e4	350	{
b85f4b87	351	vfs_dq_free_space_nodirty(inode, nr);
1da177e4 LT	352	mark_inode_dirty(inode);
	353	}
	354
	355	#endif /* CONFIG_QUOTA */
	356
b85f4b87	357	static inline int vfs_dq_prealloc_block_nodirty(struct inode *inode, qsize_t nr)
03f6e92b	358	{
b85f4b87	359	return vfs_dq_prealloc_space_nodirty(inode,
03f6e92b JK	360	nr << inode->i_sb->s_blocksize_bits);
	361	}
	362
b85f4b87	363	static inline int vfs_dq_prealloc_block(struct inode *inode, qsize_t nr)
03f6e92b	364	{
b85f4b87	365	return vfs_dq_prealloc_space(inode,
03f6e92b JK	366	nr << inode->i_sb->s_blocksize_bits);
	367	}
	368
b85f4b87	369	static inline int vfs_dq_alloc_block_nodirty(struct inode *inode, qsize_t nr)
03f6e92b	370	{
b85f4b87	371	return vfs_dq_alloc_space_nodirty(inode,
03f6e92b JK	372	nr << inode->i_sb->s_blocksize_bits);
	373	}
	374
b85f4b87	375	static inline int vfs_dq_alloc_block(struct inode *inode, qsize_t nr)
03f6e92b	376	{
b85f4b87	377	return vfs_dq_alloc_space(inode,
03f6e92b JK	378	nr << inode->i_sb->s_blocksize_bits);
	379	}
	380
b85f4b87	381	static inline void vfs_dq_free_block_nodirty(struct inode *inode, qsize_t nr)
03f6e92b	382	{
b85f4b87	383	vfs_dq_free_space_nodirty(inode, nr << inode->i_sb->s_blocksize_bits);
03f6e92b JK	384	}
03f6e92b JK	385
b85f4b87	386	static inline void vfs_dq_free_block(struct inode *inode, qsize_t nr)
03f6e92b	387	{
b85f4b87	388	vfs_dq_free_space(inode, nr << inode->i_sb->s_blocksize_bits);
03f6e92b	389	}
1da177e4	390
b85f4b87 JK	391	/*
	392	* Define uppercase equivalents for compatibility with old function names
	393	* Can go away when we think all users have been converted (15/04/2008)
	394	*/
	395	#define DQUOT_INIT(inode) vfs_dq_init(inode)
	396	#define DQUOT_DROP(inode) vfs_dq_drop(inode)
	397	#define DQUOT_PREALLOC_SPACE_NODIRTY(inode, nr) \
	398	vfs_dq_prealloc_space_nodirty(inode, nr)
	399	#define DQUOT_PREALLOC_SPACE(inode, nr) vfs_dq_prealloc_space(inode, nr)
	400	#define DQUOT_ALLOC_SPACE_NODIRTY(inode, nr) \
	401	vfs_dq_alloc_space_nodirty(inode, nr)
	402	#define DQUOT_ALLOC_SPACE(inode, nr) vfs_dq_alloc_space(inode, nr)
	403	#define DQUOT_PREALLOC_BLOCK_NODIRTY(inode, nr) \
	404	vfs_dq_prealloc_block_nodirty(inode, nr)
	405	#define DQUOT_PREALLOC_BLOCK(inode, nr) vfs_dq_prealloc_block(inode, nr)
	406	#define DQUOT_ALLOC_BLOCK_NODIRTY(inode, nr) \
	407	vfs_dq_alloc_block_nodirty(inode, nr)
	408	#define DQUOT_ALLOC_BLOCK(inode, nr) vfs_dq_alloc_block(inode, nr)
	409	#define DQUOT_ALLOC_INODE(inode) vfs_dq_alloc_inode(inode)
	410	#define DQUOT_FREE_SPACE_NODIRTY(inode, nr) \
	411	vfs_dq_free_space_nodirty(inode, nr)
	412	#define DQUOT_FREE_SPACE(inode, nr) vfs_dq_free_space(inode, nr)
	413	#define DQUOT_FREE_BLOCK_NODIRTY(inode, nr) \
	414	vfs_dq_free_block_nodirty(inode, nr)
	415	#define DQUOT_FREE_BLOCK(inode, nr) vfs_dq_free_block(inode, nr)
	416	#define DQUOT_FREE_INODE(inode) vfs_dq_free_inode(inode)
	417	#define DQUOT_TRANSFER(inode, iattr) vfs_dq_transfer(inode, iattr)
	418	#define DQUOT_SYNC(sb) vfs_dq_sync(sb)
	419	#define DQUOT_OFF(sb, remount) vfs_dq_off(sb, remount)
	420	#define DQUOT_ON_REMOUNT(sb) vfs_dq_quota_on_remount(sb)
	421
1da177e4	422	#endif /* _LINUX_QUOTAOPS_ */