Release 4.7 include/linux/quotaops.h

Directory: include/linux
/*
 * 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>


#define DQUOT_SPACE_WARN	0x1

#define DQUOT_SPACE_RESERVE	0x2

#define DQUOT_SPACE_NOFAIL	0x4



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

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jan kara jan kara 20 100.00% 2 100.00%
Total 20 100.00% 2 100.00%

/* i_mutex must being held */


static inline bool is_quota_modification(struct inode *inode, struct iattr *ia)
{
	return (ia->ia_valid & ATTR_SIZE && ia->ia_size != inode->i_size) ||
		(ia->ia_valid & ATTR_UID && !uid_eq(ia->ia_uid, inode->i_uid)) ||
		(ia->ia_valid & ATTR_GID && !gid_eq(ia->ia_gid, inode->i_gid));
}

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dmitriy monakhov dmitriy monakhov 64 86.49% 1 50.00%
eric w. biederman eric w. biederman 10 13.51% 1 50.00%
Total 74 100.00% 2 100.00%

#if defined(CONFIG_QUOTA)


#define quota_error(sb, fmt, args...) \
	__quota_error((sb), __func__, fmt , ## args)

extern __printf(3, 4)
void __quota_error(struct super_block *sb, const char *func,
		   const char *fmt, ...);

/*
 * declaration of quota_function calls in kernel.
 */
void inode_add_rsv_space(struct inode *inode, qsize_t number);
void inode_claim_rsv_space(struct inode *inode, qsize_t number);
void inode_sub_rsv_space(struct inode *inode, qsize_t number);
void inode_reclaim_rsv_space(struct inode *inode, qsize_t number);

int dquot_initialize(struct inode *inode);
void dquot_drop(struct inode *inode);
struct dquot *dqget(struct super_block *sb, struct kqid qid);


static inline struct dquot *dqgrab(struct dquot *dquot)
{
	/* Make sure someone else has active reference to dquot */
	WARN_ON_ONCE(!atomic_read(&dquot->dq_count));
	WARN_ON_ONCE(!test_bit(DQ_ACTIVE_B, &dquot->dq_flags));
	atomic_inc(&dquot->dq_count);
	return dquot;
}
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jan kara jan kara 52 100.00% 1 100.00%
Total 52 100.00% 1 100.00%

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 flags);
void __dquot_free_space(struct inode *inode, qsize_t number, int flags);

int dquot_alloc_inode(struct inode *inode);

int dquot_claim_space_nodirty(struct inode *inode, qsize_t number);
void dquot_free_inode(struct inode *inode);
void dquot_reclaim_space_nodirty(struct inode *inode, qsize_t number);

int dquot_disable(struct super_block *sb, int type, unsigned int flags);
/* Suspend quotas on remount RO */


static inline int dquot_suspend(struct super_block *sb, int type)
{
	return dquot_disable(sb, type, DQUOT_SUSPENDED);
}
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christoph hellwig christoph hellwig 25 100.00% 1 100.00%
Total 25 100.00% 1 100.00%

int dquot_resume(struct super_block *sb, int type);

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_get_next_id(struct super_block *sb, struct kqid *qid);
int dquot_mark_dquot_dirty(struct dquot *dquot);

int dquot_file_open(struct inode *inode, struct file *file);

int dquot_enable(struct inode *inode, int type, int format_id,
	unsigned int flags);
int dquot_quota_on(struct super_block *sb, int type, int format_id,
 	struct path *path);
int dquot_quota_on_mount(struct super_block *sb, char *qf_name,
 	int format_id, int type);
int dquot_quota_off(struct super_block *sb, int type);
int dquot_writeback_dquots(struct super_block *sb, int type);
int dquot_quota_sync(struct super_block *sb, int type);
int dquot_get_state(struct super_block *sb, struct qc_state *state);
int dquot_set_dqinfo(struct super_block *sb, int type, struct qc_info *ii);
int dquot_get_dqblk(struct super_block *sb, struct kqid id,
		struct qc_dqblk *di);
int dquot_get_next_dqblk(struct super_block *sb, struct kqid *id,
		struct qc_dqblk *di);
int dquot_set_dqblk(struct super_block *sb, struct kqid id,
		struct qc_dqblk *di);

int __dquot_transfer(struct inode *inode, struct dquot **transfer_to);
int dquot_transfer(struct inode *inode, struct iattr *iattr);



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

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jan kara jan kara 27 100.00% 2 100.00%
Total 27 100.00% 2 100.00%

/*
 * Functions for checking status of quota
 */



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

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jan kara jan kara 29 96.67% 4 80.00%
dmitriy monakhov dmitriy monakhov 1 3.33% 1 20.00%
Total 30 100.00% 5 100.00%



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

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jan kara jan kara 29 96.67% 2 66.67%
dmitriy monakhov dmitriy monakhov 1 3.33% 1 33.33%
Total 30 100.00% 3 100.00%



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

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jan kara jan kara 29 96.67% 3 75.00%
dmitriy monakhov dmitriy monakhov 1 3.33% 1 25.00%
Total 30 100.00% 4 100.00%



static inline unsigned sb_any_quota_suspended(struct super_block *sb)
{
	return dquot_state_types(sb_dqopt(sb)->flags, DQUOT_SUSPENDED);
}

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jan kara jan kara 16 64.00% 3 60.00%
konstantin khlebnikov konstantin khlebnikov 8 32.00% 1 20.00%
dmitriy monakhov dmitriy monakhov 1 4.00% 1 20.00%
Total 25 100.00% 5 100.00%

/* Does kernel know about any quota information for given sb + type? */


static inline bool 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);
}

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jan kara jan kara 23 95.83% 3 75.00%
dmitriy monakhov dmitriy monakhov 1 4.17% 1 25.00%
Total 24 100.00% 4 100.00%



static inline unsigned sb_any_quota_loaded(struct super_block *sb)
{
	return dquot_state_types(sb_dqopt(sb)->flags, DQUOT_USAGE_ENABLED);
}

Contributors
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jan kara jan kara 16 64.00% 2 50.00%
konstantin khlebnikov konstantin khlebnikov 8 32.00% 1 25.00%
dmitriy monakhov dmitriy monakhov 1 4.00% 1 25.00%
Total 25 100.00% 4 100.00%



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

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jan kara jan kara 30 96.77% 3 75.00%
dmitriy monakhov dmitriy monakhov 1 3.23% 1 25.00%
Total 31 100.00% 4 100.00%

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

#else



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

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christoph hellwig christoph hellwig 6 33.33% 1 16.67%
linus torvalds linus torvalds 6 33.33% 2 33.33%
pre-git pre-git 5 27.78% 2 33.33%
jan kara jan kara 1 5.56% 1 16.67%
Total 18 100.00% 6 100.00%



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

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mingming cao mingming cao 12 66.67% 1 50.00%
christoph hellwig christoph hellwig 6 33.33% 1 50.00%
Total 18 100.00% 2 100.00%



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

Contributors
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christoph hellwig christoph hellwig 14 77.78% 1 50.00%
mingming cao mingming cao 4 22.22% 1 50.00%
Total 18 100.00% 2 100.00%



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

Contributors
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jan kara jan kara 9 60.00% 3 50.00%
linus torvalds linus torvalds 3 20.00% 1 16.67%
christoph hellwig christoph hellwig 2 13.33% 1 16.67%
pre-git pre-git 1 6.67% 1 16.67%
Total 15 100.00% 6 100.00%

/* 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;
}

Contributors
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jan kara jan kara 18 100.00% 1 100.00%
Total 18 100.00% 1 100.00%



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

Contributors
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jan kara jan kara 15 100.00% 1 100.00%
Total 15 100.00% 1 100.00%



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

Contributors
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jan kara jan kara 18 100.00% 1 100.00%
Total 18 100.00% 1 100.00%



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

Contributors
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jan kara jan kara 6 40.00% 1 25.00%
andrew morton andrew morton 5 33.33% 1 25.00%
pre-git pre-git 3 20.00% 1 25.00%
christoph hellwig christoph hellwig 1 6.67% 1 25.00%
Total 15 100.00% 4 100.00%



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

Contributors
Person Tokens Prop Commits CommitProp
andrew morton andrew morton 7 63.64% 1 33.33%
pre-git pre-git 3 27.27% 1 33.33%
christoph hellwig christoph hellwig 1 9.09% 1 33.33%
Total 11 100.00% 3 100.00%



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

Contributors
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andrew morton andrew morton 11 73.33% 1 33.33%
pre-git pre-git 3 20.00% 1 33.33%
christoph hellwig christoph hellwig 1 6.67% 1 33.33%
Total 15 100.00% 3 100.00%



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

Contributors
Person Tokens Prop Commits CommitProp
andrew morton andrew morton 7 63.64% 1 33.33%
pre-git pre-git 3 27.27% 1 33.33%
christoph hellwig christoph hellwig 1 9.09% 1 33.33%
Total 11 100.00% 3 100.00%



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

Contributors
Person Tokens Prop Commits CommitProp
andrew morton andrew morton 14 70.00% 1 25.00%
pre-git pre-git 4 20.00% 1 25.00%
christoph hellwig christoph hellwig 1 5.00% 1 25.00%
linus torvalds linus torvalds 1 5.00% 1 25.00%
Total 20 100.00% 4 100.00%



static inline int __dquot_alloc_space(struct inode *inode, qsize_t number,
		int flags)
{
	if (!(flags & DQUOT_SPACE_RESERVE))
		inode_add_bytes(inode, number);
	return 0;
}

Contributors
Person Tokens Prop Commits CommitProp
linus torvalds linus torvalds 15 40.54% 1 16.67%
christoph hellwig christoph hellwig 9 24.32% 1 16.67%
eric sandeen eric sandeen 6 16.22% 1 16.67%
jan kara jan kara 5 13.51% 2 33.33%
adrian bunk adrian bunk 2 5.41% 1 16.67%
Total 37 100.00% 6 100.00%



static inline void __dquot_free_space(struct inode *inode, qsize_t number,
		int flags)
{
	if (!(flags & DQUOT_SPACE_RESERVE))
		inode_sub_bytes(inode, number);
}

Contributors
Person Tokens Prop Commits CommitProp
linus torvalds linus torvalds 14 41.18% 1 20.00%
christoph hellwig christoph hellwig 11 32.35% 1 20.00%
eric sandeen eric sandeen 6 17.65% 1 20.00%
adrian bunk adrian bunk 2 5.88% 1 20.00%
jan kara jan kara 1 2.94% 1 20.00%
Total 34 100.00% 5 100.00%



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

Contributors
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linus torvalds linus torvalds 15 60.00% 1 20.00%
jan kara jan kara 5 20.00% 2 40.00%
christoph hellwig christoph hellwig 3 12.00% 1 20.00%
adrian bunk adrian bunk 2 8.00% 1 20.00%
Total 25 100.00% 5 100.00%



static inline int dquot_reclaim_space_nodirty(struct inode *inode,
					      qsize_t number)
{
	inode_sub_bytes(inode, number);
	return 0;
}

Contributors
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jan kara jan kara 25 100.00% 1 100.00%
Total 25 100.00% 1 100.00%



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

Contributors
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christoph hellwig christoph hellwig 22 100.00% 1 100.00%
Total 22 100.00% 1 100.00%



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

Contributors
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christoph hellwig christoph hellwig 18 100.00% 1 100.00%
Total 18 100.00% 1 100.00%



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

Contributors
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christoph hellwig christoph hellwig 18 100.00% 1 100.00%
Total 18 100.00% 1 100.00%


#define dquot_file_open		generic_file_open



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

Contributors
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jan kara jan kara 18 100.00% 1 100.00%
Total 18 100.00% 1 100.00%

#endif /* CONFIG_QUOTA */



static inline int dquot_alloc_space_nodirty(struct inode *inode, qsize_t nr)
{
	return __dquot_alloc_space(inode, nr, DQUOT_SPACE_WARN);
}

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linus torvalds linus torvalds 16 64.00% 1 20.00%
christoph hellwig christoph hellwig 5 20.00% 1 20.00%
adrian bunk adrian bunk 2 8.00% 1 20.00%
jan kara jan kara 1 4.00% 1 20.00%
eric sandeen eric sandeen 1 4.00% 1 20.00%
Total 25 100.00% 5 100.00%



static inline void dquot_alloc_space_nofail(struct inode *inode, qsize_t nr)
{
	__dquot_alloc_space(inode, nr, DQUOT_SPACE_WARN|DQUOT_SPACE_NOFAIL);
	mark_inode_dirty_sync(inode);
}

Contributors
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eric sandeen eric sandeen 30 96.77% 1 50.00%
jan kara jan kara 1 3.23% 1 50.00%
Total 31 100.00% 2 100.00%



static inline int dquot_alloc_space(struct inode *inode, qsize_t nr)
{
	int ret;

	ret = dquot_alloc_space_nodirty(inode, nr);
	if (!ret) {
		/*
                 * Mark inode fully dirty. Since we are allocating blocks, inode
                 * would become fully dirty soon anyway and it reportedly
                 * reduces lock contention.
                 */
		mark_inode_dirty(inode);
	}
	return ret;
}

Contributors
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mingming cao mingming cao 23 53.49% 2 40.00%
christoph hellwig christoph hellwig 16 37.21% 1 20.00%
li shaohua li shaohua 3 6.98% 1 20.00%
dave chinner dave chinner 1 2.33% 1 20.00%
Total 43 100.00% 5 100.00%



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

Contributors
Person Tokens Prop Commits CommitProp
linus torvalds linus torvalds 12 44.44% 1 20.00%
christoph hellwig christoph hellwig 9 33.33% 1 20.00%
jan kara jan kara 4 14.81% 2 40.00%
adrian bunk adrian bunk 2 7.41% 1 20.00%
Total 27 100.00% 5 100.00%



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

Contributors
Person Tokens Prop Commits CommitProp
eric sandeen eric sandeen 26 100.00% 1 100.00%
Total 26 100.00% 1 100.00%



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

Contributors
Person Tokens Prop Commits CommitProp
linus torvalds linus torvalds 16 59.26% 1 25.00%
christoph hellwig christoph hellwig 8 29.63% 1 25.00%
adrian bunk adrian bunk 2 7.41% 1 25.00%
jan kara jan kara 1 3.70% 1 25.00%
Total 27 100.00% 4 100.00%



static inline int dquot_prealloc_block_nodirty(struct inode *inode, qsize_t nr)
{
	return __dquot_alloc_space(inode, nr << inode->i_blkbits, 0);
}

Contributors
Person Tokens Prop Commits CommitProp
jan kara jan kara 24 82.76% 2 50.00%
christoph hellwig christoph hellwig 4 13.79% 1 25.00%
mingming cao mingming cao 1 3.45% 1 25.00%
Total 29 100.00% 4 100.00%



static inline int dquot_prealloc_block(struct inode *inode, qsize_t nr)
{
	int ret;

	ret = dquot_prealloc_block_nodirty(inode, nr);
	if (!ret)
		mark_inode_dirty_sync(inode);
	return ret;
}

Contributors
Person Tokens Prop Commits CommitProp
jan kara jan kara 22 55.00% 3 75.00%
christoph hellwig christoph hellwig 18 45.00% 1 25.00%
Total 40 100.00% 4 100.00%



static inline int dquot_reserve_block(struct inode *inode, qsize_t nr)
{
	return __dquot_alloc_space(inode, nr << inode->i_blkbits,
				DQUOT_SPACE_WARN|DQUOT_SPACE_RESERVE);
}

Contributors
Person Tokens Prop Commits CommitProp
jan kara jan kara 24 77.42% 2 40.00%
christoph hellwig christoph hellwig 3 9.68% 1 20.00%
eric sandeen eric sandeen 3 9.68% 1 20.00%
mingming cao mingming cao 1 3.23% 1 20.00%
Total 31 100.00% 5 100.00%



static inline int dquot_claim_block(struct inode *inode, qsize_t nr)
{
	int ret;

	ret = dquot_claim_space_nodirty(inode, nr << inode->i_blkbits);
	if (!ret)
		mark_inode_dirty_sync(inode);
	return ret;
}

Contributors
Person Tokens Prop Commits CommitProp
jan kara jan kara 24 54.55% 3 60.00%
christoph hellwig christoph hellwig 19 43.18% 1 20.00%
mingming cao mingming cao 1 2.27% 1 20.00%
Total 44 100.00% 5 100.00%



static inline void dquot_reclaim_block(struct inode *inode, qsize_t nr)
{
	dquot_reclaim_space_nodirty(inode, nr << inode->i_blkbits);
	mark_inode_dirty_sync(inode);
}

Contributors
Person Tokens Prop Commits CommitProp
jan kara jan kara 31 100.00% 1 100.00%
Total 31 100.00% 1 100.00%



static inline void dquot_free_space_nodirty(struct inode *inode, qsize_t nr)
{
	__dquot_free_space(inode, nr, 0);
}

Contributors
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mingming cao mingming cao 18 75.00% 1 50.00%
christoph hellwig christoph hellwig 6 25.00% 1 50.00%
Total 24 100.00% 2 100.00%



static inline void dquot_free_space(struct inode *inode, qsize_t nr)
{
	dquot_free_space_nodirty(inode, nr);
	mark_inode_dirty_sync(inode);
}

Contributors
Person Tokens Prop Commits CommitProp
mingming cao mingming cao 19 70.37% 1 33.33%
christoph hellwig christoph hellwig 7 25.93% 1 33.33%
jan kara jan kara 1 3.70% 1 33.33%
Total 27 100.00% 3 100.00%



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

Contributors
Person Tokens Prop Commits CommitProp
mingming cao mingming cao 24 92.31% 1 50.00%
christoph hellwig christoph hellwig 2 7.69% 1 50.00%
Total 26 100.00% 2 100.00%



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

Contributors
Person Tokens Prop Commits CommitProp
jan kara jan kara 23 88.46% 2 50.00%
christoph hellwig christoph hellwig 2 7.69% 1 25.00%
mingming cao mingming cao 1 3.85% 1 25.00%
Total 26 100.00% 4 100.00%



static inline void dquot_release_reservation_block(struct inode *inode,
		qsize_t nr)
{
	__dquot_free_space(inode, nr << inode->i_blkbits, DQUOT_SPACE_RESERVE);
}

Contributors
Person Tokens Prop Commits CommitProp
jan kara jan kara 23 82.14% 2 40.00%
christoph hellwig christoph hellwig 3 10.71% 1 20.00%
mingming cao mingming cao 1 3.57% 1 20.00%
eric sandeen eric sandeen 1 3.57% 1 20.00%
Total 28 100.00% 5 100.00%

unsigned int qtype_enforce_flag(int type);

#endif /* _LINUX_QUOTAOPS_ */
Overall Contributors
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jan kara jan kara 800 41.99% 26 39.39%
christoph hellwig christoph hellwig 321 16.85% 10 15.15%
andrew morton andrew morton 175 9.19% 2 3.03%
mingming cao mingming cao 126 6.61% 3 4.55%
dmitriy monakhov dmitriy monakhov 107 5.62% 3 4.55%
linus torvalds linus torvalds 100 5.25% 3 4.55%
eric sandeen eric sandeen 87 4.57% 2 3.03%
pre-git pre-git 79 4.15% 2 3.03%
jiaying zhang jiaying zhang 34 1.78% 1 1.52%
al viro al viro 19 1.00% 1 1.52%
eric w. biederman eric w. biederman 17 0.89% 3 4.55%
konstantin khlebnikov konstantin khlebnikov 16 0.84% 1 1.52%
adrian bunk adrian bunk 13 0.68% 2 3.03%
joe perches joe perches 4 0.21% 2 3.03%
li shaohua li shaohua 3 0.16% 1 1.52%
alexey dobriyan alexey dobriyan 2 0.10% 2 3.03%
dave jones dave jones 1 0.05% 1 1.52%
dave chinner dave chinner 1 0.05% 1 1.52%
Total 1905 100.00% 66 100.00%
  Directory: include/linux

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cregit-Linux how code gets into the kernel

Release 4.7 include/linux/quotaops.h

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