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kernel_linux
提交 b85f4b87 编写于 作者: J Jan Kara 提交者： Linus Torvalds
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quota: rename quota functions from upper case, make bigger ones non-inline 

Cleanup quotaops.h: Rename functions from uppercase to lowercase (and
define backward compatibility macros), move larger functions to dquot.c
and make them non-inline.
Signed-off-by: NJan Kara <jack@suse.cz>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
上级 b48d3805
隐藏空白更改
内联 并排
Showing with 160 addition and 119 deletion
fs/dquot.c
浏览文件 @ b85f4b87
......@@ -1153,6 +1153,28 @@ int dquot_drop(struct inode *inode)
return 0;
}
/* Wrapper to remove references to quota structures from inode */
void vfs_dq_drop(struct inode *inode)
{
/* Here we can get arbitrary inode from clear_inode() so we have
* to be careful. OTOH we don't need locking as quota operations
* are allowed to change only at mount time */
if (!IS_NOQUOTA(inode) && inode->i_sb && inode->i_sb->dq_op
&& inode->i_sb->dq_op->drop) {
int cnt;
/* Test before calling to rule out calls from proc and such
* where we are not allowed to block. Note that this is
* actually reliable test even without the lock - the caller
* must assure that nobody can come after the DQUOT_DROP and
* add quota pointers back anyway */
for (cnt = 0; cnt < MAXQUOTAS; cnt++)
if (inode->i_dquot[cnt] != NODQUOT)
break;
if (cnt < MAXQUOTAS)
inode->i_sb->dq_op->drop(inode);
}
}
/*
* Following four functions update i_blocks+i_bytes fields and
* quota information (together with appropriate checks)
......@@ -1426,6 +1448,18 @@ int dquot_transfer(struct inode *inode, struct iattr *iattr)
return ret;
}
/* Wrapper for transferring ownership of an inode */
int vfs_dq_transfer(struct inode *inode, struct iattr *iattr)
{
if (sb_any_quota_enabled(inode->i_sb) && !IS_NOQUOTA(inode)) {
vfs_dq_init(inode);
if (inode->i_sb->dq_op->transfer(inode, iattr) == NO_QUOTA)
return 1;
}
return 0;
}
/*
* Write info of quota file to disk
*/
......@@ -1766,6 +1800,22 @@ int vfs_quota_on_mount(struct super_block *sb, char *qf_name,
return error;
}
/* Wrapper to turn on quotas when remounting rw */
int vfs_dq_quota_on_remount(struct super_block *sb)
{
int cnt;
int ret = 0, err;
if (!sb->s_qcop || !sb->s_qcop->quota_on)
return -ENOSYS;
for (cnt = 0; cnt < MAXQUOTAS; cnt++) {
err = sb->s_qcop->quota_on(sb, cnt, 0, NULL, 1);
if (err < 0 && !ret)
ret = err;
}
return ret;
}
/* Generic routine for getting common part of quota structure */
static void do_get_dqblk(struct dquot *dquot, struct if_dqblk *di)
{
......@@ -2101,8 +2151,11 @@ EXPORT_SYMBOL(dquot_release);
EXPORT_SYMBOL(dquot_mark_dquot_dirty);
EXPORT_SYMBOL(dquot_initialize);
EXPORT_SYMBOL(dquot_drop);
EXPORT_SYMBOL(vfs_dq_drop);
EXPORT_SYMBOL(dquot_alloc_space);
EXPORT_SYMBOL(dquot_alloc_inode);
EXPORT_SYMBOL(dquot_free_space);
EXPORT_SYMBOL(dquot_free_inode);
EXPORT_SYMBOL(dquot_transfer);
EXPORT_SYMBOL(vfs_dq_transfer);
EXPORT_SYMBOL(vfs_dq_quota_on_remount);
include/linux/quotaops.h
浏览文件 @ b85f4b87
......@@ -19,34 +19,38 @@
/*
* declaration of quota_function calls in kernel.
*/
extern void sync_dquots(struct super_block *sb, int type);
extern int dquot_initialize(struct inode *inode, int type);
extern int dquot_drop(struct inode *inode);
extern int dquot_alloc_space(struct inode *inode, qsize_t number, int prealloc);
extern int dquot_alloc_inode(const struct inode *inode, unsigned long number);
extern int dquot_free_space(struct inode *inode, qsize_t number);
extern int dquot_free_inode(const struct inode *inode, unsigned long number);
extern int dquot_transfer(struct inode *inode, struct iattr *iattr);
extern int dquot_commit(struct dquot *dquot);
extern int dquot_acquire(struct dquot *dquot);
extern int dquot_release(struct dquot *dquot);
extern int dquot_commit_info(struct super_block *sb, int type);
extern int dquot_mark_dquot_dirty(struct dquot *dquot);
extern int vfs_quota_on(struct super_block *sb, int type, int format_id,
char *path, int remount);
extern int vfs_quota_on_mount(struct super_block *sb, char *qf_name,
int format_id, int type);
extern int vfs_quota_off(struct super_block *sb, int type, int remount);
extern int vfs_quota_sync(struct super_block *sb, int type);
extern int vfs_get_dqinfo(struct super_block *sb, int type, struct if_dqinfo *ii);
extern int vfs_set_dqinfo(struct super_block *sb, int type, struct if_dqinfo *ii);
extern int vfs_get_dqblk(struct super_block *sb, int type, qid_t id, struct if_dqblk *di);
extern int vfs_set_dqblk(struct super_block *sb, int type, qid_t id, struct if_dqblk *di);
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, unsigned long number);
int dquot_free_space(struct inode *inode, qsize_t number);
int dquot_free_inode(const struct inode *inode, unsigned long 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_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_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);
/*
* Operations supported for diskquotas.
......@@ -59,38 +63,16 @@ extern struct 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 DQUOT_INIT(struct inode *inode)
static inline void vfs_dq_init(struct inode *inode)
{
BUG_ON(!inode->i_sb);
if (sb_any_quota_enabled(inode->i_sb) && !IS_NOQUOTA(inode))
inode->i_sb->dq_op->initialize(inode, -1);
}
/* The same as with DQUOT_INIT */
static inline void DQUOT_DROP(struct inode *inode)
{
/* Here we can get arbitrary inode from clear_inode() so we have
* to be careful. OTOH we don't need locking as quota operations
* are allowed to change only at mount time */
if (!IS_NOQUOTA(inode) && inode->i_sb && inode->i_sb->dq_op
&& inode->i_sb->dq_op->drop) {
int cnt;
/* Test before calling to rule out calls from proc and such
* where we are not allowed to block. Note that this is
* actually reliable test even without the lock - the caller
* must assure that nobody can come after the DQUOT_DROP and
* add quota pointers back anyway */
for (cnt = 0; cnt < MAXQUOTAS; cnt++)
if (inode->i_dquot[cnt] != NODQUOT)
break;
if (cnt < MAXQUOTAS)
inode->i_sb->dq_op->drop(inode);
}
}
/* The following allocation/freeing/transfer functions *must* be called inside
* a transaction (deadlocks possible otherwise) */
static inline int DQUOT_PREALLOC_SPACE_NODIRTY(struct inode *inode, qsize_t nr)
static inline int vfs_dq_prealloc_space_nodirty(struct inode *inode, qsize_t nr)
{
if (sb_any_quota_enabled(inode->i_sb)) {
/* Used space is updated in alloc_space() */
......@@ -102,15 +84,15 @@ static inline int DQUOT_PREALLOC_SPACE_NODIRTY(struct inode *inode, qsize_t nr)
return 0;
}
static inline int DQUOT_PREALLOC_SPACE(struct inode *inode, qsize_t nr)
static inline int vfs_dq_prealloc_space(struct inode *inode, qsize_t nr)
{
int ret;
if (!(ret = DQUOT_PREALLOC_SPACE_NODIRTY(inode, nr)))
if (!(ret = vfs_dq_prealloc_space_nodirty(inode, nr)))
mark_inode_dirty(inode);
return ret;
}
static inline int DQUOT_ALLOC_SPACE_NODIRTY(struct inode *inode, qsize_t nr)
static inline int vfs_dq_alloc_space_nodirty(struct inode *inode, qsize_t nr)
{
if (sb_any_quota_enabled(inode->i_sb)) {
/* Used space is updated in alloc_space() */
......@@ -122,25 +104,25 @@ static inline int DQUOT_ALLOC_SPACE_NODIRTY(struct inode *inode, qsize_t nr)
return 0;
}
static inline int DQUOT_ALLOC_SPACE(struct inode *inode, qsize_t nr)
static inline int vfs_dq_alloc_space(struct inode *inode, qsize_t nr)
{
int ret;
if (!(ret = DQUOT_ALLOC_SPACE_NODIRTY(inode, nr)))
if (!(ret = vfs_dq_alloc_space_nodirty(inode, nr)))
mark_inode_dirty(inode);
return ret;
}
static inline int DQUOT_ALLOC_INODE(struct inode *inode)
static inline int vfs_dq_alloc_inode(struct inode *inode)
{
if (sb_any_quota_enabled(inode->i_sb)) {
DQUOT_INIT(inode);
vfs_dq_init(inode);
if (inode->i_sb->dq_op->alloc_inode(inode, 1) == NO_QUOTA)
return 1;
}
return 0;
}
static inline void DQUOT_FREE_SPACE_NODIRTY(struct inode *inode, qsize_t nr)
static inline void vfs_dq_free_space_nodirty(struct inode *inode, qsize_t nr)
{
if (sb_any_quota_enabled(inode->i_sb))
inode->i_sb->dq_op->free_space(inode, nr);
......@@ -148,35 +130,25 @@ static inline void DQUOT_FREE_SPACE_NODIRTY(struct inode *inode, qsize_t nr)
inode_sub_bytes(inode, nr);
}
static inline void DQUOT_FREE_SPACE(struct inode *inode, qsize_t nr)
static inline void vfs_dq_free_space(struct inode *inode, qsize_t nr)
{
DQUOT_FREE_SPACE_NODIRTY(inode, nr);
vfs_dq_free_space_nodirty(inode, nr);
mark_inode_dirty(inode);
}
static inline void DQUOT_FREE_INODE(struct inode *inode)
static inline void vfs_dq_free_inode(struct inode *inode)
{
if (sb_any_quota_enabled(inode->i_sb))
inode->i_sb->dq_op->free_inode(inode, 1);
}
static inline int DQUOT_TRANSFER(struct inode *inode, struct iattr *iattr)
{
if (sb_any_quota_enabled(inode->i_sb) && !IS_NOQUOTA(inode)) {
DQUOT_INIT(inode);
if (inode->i_sb->dq_op->transfer(inode, iattr) == NO_QUOTA)
return 1;
}
return 0;
}
/* The following two functions cannot be called inside a transaction */
static inline void DQUOT_SYNC(struct super_block *sb)
static inline void vfs_dq_sync(struct super_block *sb)
{
sync_dquots(sb, -1);
}
static inline int DQUOT_OFF(struct super_block *sb, int remount)
static inline int vfs_dq_off(struct super_block *sb, int remount)
{
int ret = -ENOSYS;
......@@ -185,21 +157,6 @@ static inline int DQUOT_OFF(struct super_block *sb, int remount)
return ret;
}
static inline int DQUOT_ON_REMOUNT(struct super_block *sb)
{
int cnt;
int ret = 0, err;
if (!sb->s_qcop || !sb->s_qcop->quota_on)
return -ENOSYS;
for (cnt = 0; cnt < MAXQUOTAS; cnt++) {
err = sb->s_qcop->quota_on(sb, cnt, 0, NULL, 1);
if (err < 0 && !ret)
ret = err;
}
return ret;
}
#else
/*
......@@ -208,113 +165,144 @@ static inline int DQUOT_ON_REMOUNT(struct super_block *sb)
#define sb_dquot_ops (NULL)
#define sb_quotactl_ops (NULL)
static inline void DQUOT_INIT(struct inode *inode)
static inline void vfs_dq_init(struct inode *inode)
{
}
static inline void DQUOT_DROP(struct inode *inode)
static inline void vfs_dq_drop(struct inode *inode)
{
}
static inline int DQUOT_ALLOC_INODE(struct inode *inode)
static inline int vfs_dq_alloc_inode(struct inode *inode)
{
return 0;
}
static inline void DQUOT_FREE_INODE(struct inode *inode)
static inline void vfs_dq_free_inode(struct inode *inode)
{
}
static inline void DQUOT_SYNC(struct super_block *sb)
static inline void vfs_dq_sync(struct super_block *sb)
{
}
static inline int DQUOT_OFF(struct super_block *sb, int remount)
static inline int vfs_dq_off(struct super_block *sb, int remount)
{
return 0;
}
static inline int DQUOT_ON_REMOUNT(struct super_block *sb)
static inline int vfs_dq_quota_on_remount(struct super_block *sb)
{
return 0;
}
static inline int DQUOT_TRANSFER(struct inode *inode, struct iattr *iattr)
static inline int vfs_dq_transfer(struct inode *inode, struct iattr *iattr)
{
return 0;
}
static inline int DQUOT_PREALLOC_SPACE_NODIRTY(struct inode *inode, qsize_t nr)
static inline int vfs_dq_prealloc_space_nodirty(struct inode *inode, qsize_t nr)
{
inode_add_bytes(inode, nr);
return 0;
}
static inline int DQUOT_PREALLOC_SPACE(struct inode *inode, qsize_t nr)
static inline int vfs_dq_prealloc_space(struct inode *inode, qsize_t nr)
{
DQUOT_PREALLOC_SPACE_NODIRTY(inode, nr);
vfs_dq_prealloc_space_nodirty(inode, nr);
mark_inode_dirty(inode);
return 0;
}
static inline int DQUOT_ALLOC_SPACE_NODIRTY(struct inode *inode, qsize_t nr)
static inline int vfs_dq_alloc_space_nodirty(struct inode *inode, qsize_t nr)
{
inode_add_bytes(inode, nr);
return 0;
}
static inline int DQUOT_ALLOC_SPACE(struct inode *inode, qsize_t nr)
static inline int vfs_dq_alloc_space(struct inode *inode, qsize_t nr)
{
DQUOT_ALLOC_SPACE_NODIRTY(inode, nr);
vfs_dq_alloc_space_nodirty(inode, nr);
mark_inode_dirty(inode);
return 0;
}
static inline void DQUOT_FREE_SPACE_NODIRTY(struct inode *inode, qsize_t nr)
static inline void vfs_dq_free_space_nodirty(struct inode *inode, qsize_t nr)
{
inode_sub_bytes(inode, nr);
}
static inline void DQUOT_FREE_SPACE(struct inode *inode, qsize_t nr)
static inline void vfs_dq_free_space(struct inode *inode, qsize_t nr)
{
DQUOT_FREE_SPACE_NODIRTY(inode, nr);
vfs_dq_free_space_nodirty(inode, nr);
mark_inode_dirty(inode);
}
#endif /* CONFIG_QUOTA */
static inline int DQUOT_PREALLOC_BLOCK_NODIRTY(struct inode *inode, qsize_t nr)
static inline int vfs_dq_prealloc_block_nodirty(struct inode *inode, qsize_t nr)
{
return DQUOT_PREALLOC_SPACE_NODIRTY(inode,
return vfs_dq_prealloc_space_nodirty(inode,
nr << inode->i_sb->s_blocksize_bits);
}
static inline int DQUOT_PREALLOC_BLOCK(struct inode *inode, qsize_t nr)
static inline int vfs_dq_prealloc_block(struct inode *inode, qsize_t nr)
{
return DQUOT_PREALLOC_SPACE(inode,
return vfs_dq_prealloc_space(inode,
nr << inode->i_sb->s_blocksize_bits);
}
static inline int DQUOT_ALLOC_BLOCK_NODIRTY(struct inode *inode, qsize_t nr)
static inline int vfs_dq_alloc_block_nodirty(struct inode *inode, qsize_t nr)
{
return DQUOT_ALLOC_SPACE_NODIRTY(inode,
return vfs_dq_alloc_space_nodirty(inode,
nr << inode->i_sb->s_blocksize_bits);
}
static inline int DQUOT_ALLOC_BLOCK(struct inode *inode, qsize_t nr)
static inline int vfs_dq_alloc_block(struct inode *inode, qsize_t nr)
{
return DQUOT_ALLOC_SPACE(inode,
return vfs_dq_alloc_space(inode,
nr << inode->i_sb->s_blocksize_bits);
}
static inline void DQUOT_FREE_BLOCK_NODIRTY(struct inode *inode, qsize_t nr)
static inline void vfs_dq_free_block_nodirty(struct inode *inode, qsize_t nr)
{
DQUOT_FREE_SPACE_NODIRTY(inode, nr << inode->i_sb->s_blocksize_bits);
vfs_dq_free_space_nodirty(inode, nr << inode->i_sb->s_blocksize_bits);
}
static inline void DQUOT_FREE_BLOCK(struct inode *inode, qsize_t nr)
static inline void vfs_dq_free_block(struct inode *inode, qsize_t nr)
{
DQUOT_FREE_SPACE(inode, nr << inode->i_sb->s_blocksize_bits);
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_ */
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