1 files changed, 92 insertions, 212 deletions

diff --git a/include/linux/quotaops.h b/include/linux/quotaops.h
index 3ebb23153640..e6fa7acce290 100644
--- a/include/linux/quotaops.h
+++ b/include/linux/quotaops.h
@@ -19,15 +19,12 @@ static inline struct quota_info *sb_dqopt(struct super_block *sb)
 /*
  * 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);
-}
+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);
 
-int dquot_initialize(struct inode *inode, int type);
-int dquot_drop(struct inode *inode);
+void dquot_initialize(struct inode *inode);
+void 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,
@@ -36,24 +33,23 @@ int dquot_scan_active(struct super_block *sb,
 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_alloc_space(struct inode *inode, qsize_t number,
+                int warn, int reserve);
+void __dquot_free_space(struct inode *inode, qsize_t number, int reserve);
 
-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_alloc_inode(const 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_claim_space_nodirty(struct inode *inode, qsize_t number);
+void dquot_free_inode(const struct inode *inode);
 
-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 dquot_file_open(struct inode *inode, struct file *file);
+
 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,
@@ -64,14 +60,13 @@ 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_quota_sync(struct super_block *sb, int type, int wait);
 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 dquot_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)
@@ -83,53 +78,56 @@ static inline struct mem_dqinfo *sb_dqinfo(struct super_block *sb, int type)
  * Functions for checking status of quota
  */
 
-static inline int sb_has_quota_usage_enabled(struct super_block *sb, int type)
+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);
 }
 
-static inline int sb_has_quota_limits_enabled(struct super_block *sb, int type)
+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);
 }
 
-static inline int sb_has_quota_suspended(struct super_block *sb, int type)
+static inline bool 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)
+static inline unsigned sb_any_quota_suspended(struct super_block *sb)
 {
-        return sb_has_quota_suspended(sb, USRQUOTA) ||
-                sb_has_quota_suspended(sb, GRPQUOTA);
+        unsigned type, tmsk = 0;
+        for (type = 0; type < MAXQUOTAS; type++)
+                tmsk |= sb_has_quota_suspended(sb, type) << type;
+        return tmsk;
 }
 
 /* Does kernel know about any quota information for given sb + type? */
-static inline int sb_has_quota_loaded(struct super_block *sb, int 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);
 }
 
-static inline int sb_any_quota_loaded(struct super_block *sb)
+static inline unsigned sb_any_quota_loaded(struct super_block *sb)
 {
-        return sb_has_quota_loaded(sb, USRQUOTA) ||
-                sb_has_quota_loaded(sb, GRPQUOTA);
+        unsigned type, tmsk = 0;
+        for (type = 0; type < MAXQUOTAS; type++)
+                tmsk |= sb_has_quota_loaded(sb, type) << type;
+        return  tmsk;
 }
 
-static inline int sb_has_quota_active(struct super_block *sb, int type)
+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);
 }
 
-static inline int sb_any_quota_active(struct super_block *sb)
+static inline unsigned sb_any_quota_active(struct super_block *sb)
 {
-        return sb_has_quota_active(sb, USRQUOTA) ||
-               sb_has_quota_active(sb, GRPQUOTA);
+        return sb_any_quota_loaded(sb) & ~sb_any_quota_suspended(sb);
 }
 
 /*
@@ -141,122 +139,6 @@ 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)
 {
@@ -316,28 +198,20 @@ static inline int sb_any_quota_active(struct super_block *sb)
 #define sb_dquot_ops                            (NULL)
 #define sb_quotactl_ops                         (NULL)
 
-static inline void vfs_dq_init(struct inode *inode)
+static inline void dquot_initialize(struct inode *inode)
 {
 }
 
-static inline void vfs_dq_drop(struct inode *inode)
+static inline void dquot_drop(struct inode *inode)
 {
 }
 
-static inline int vfs_dq_alloc_inode(struct inode *inode)
+static inline int dquot_alloc_inode(const 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 void dquot_free_inode(const struct inode *inode)
 {
 }
 
@@ -351,110 +225,116 @@ 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)
+static inline int dquot_transfer(struct inode *inode, struct iattr *iattr)
 {
         return 0;
 }
 
-static inline int vfs_dq_prealloc_space_nodirty(struct inode *inode, qsize_t nr)
+static inline int __dquot_alloc_space(struct inode *inode, qsize_t number,
+                int warn, int reserve)
 {
-        inode_add_bytes(inode, nr);
+        if (!reserve)
+                inode_add_bytes(inode, number);
         return 0;
 }
 
-static inline int vfs_dq_prealloc_space(struct inode *inode, qsize_t nr)
+static inline void __dquot_free_space(struct inode *inode, qsize_t number,
+                int reserve)
 {
-        vfs_dq_prealloc_space_nodirty(inode, nr);
-        mark_inode_dirty(inode);
-        return 0;
+        if (!reserve)
+                inode_sub_bytes(inode, number);
 }
 
-static inline int vfs_dq_alloc_space_nodirty(struct inode *inode, qsize_t nr)
+static inline int dquot_claim_space_nodirty(struct inode *inode, qsize_t number)
 {
-        inode_add_bytes(inode, nr);
+        inode_add_bytes(inode, number);
         return 0;
 }
 
-static inline int vfs_dq_alloc_space(struct inode *inode, qsize_t nr)
+#define dquot_file_open         generic_file_open
+
+#endif /* CONFIG_QUOTA */
+
+static inline int dquot_alloc_space_nodirty(struct inode *inode, qsize_t nr)
 {
-        vfs_dq_alloc_space_nodirty(inode, nr);
-        mark_inode_dirty(inode);
-        return 0;
+        return __dquot_alloc_space(inode, nr, 1, 0);
 }
 
-static inline int vfs_dq_reserve_space(struct inode *inode, qsize_t nr)
+static inline int dquot_alloc_space(struct inode *inode, qsize_t nr)
 {
-        return 0;
+        int ret;
+
+        ret = dquot_alloc_space_nodirty(inode, nr);
+        if (!ret)
+                mark_inode_dirty(inode);
+        return ret;
 }
 
-static inline int vfs_dq_claim_space(struct inode *inode, qsize_t nr)
+static inline int dquot_alloc_block_nodirty(struct inode *inode, qsize_t nr)
 {
-        return vfs_dq_alloc_space(inode, nr);
+        return dquot_alloc_space_nodirty(inode, nr << inode->i_blkbits);
 }
 
-static inline
-int vfs_dq_release_reservation_space(struct inode *inode, qsize_t nr)
+static inline int dquot_alloc_block(struct inode *inode, qsize_t nr)
 {
-        return 0;
+        return dquot_alloc_space(inode, nr << inode->i_blkbits);
 }
 
-static inline void vfs_dq_free_space_nodirty(struct inode *inode, qsize_t nr)
+static inline int dquot_prealloc_block_nodirty(struct inode *inode, qsize_t nr)
 {
-        inode_sub_bytes(inode, nr);
+        return __dquot_alloc_space(inode, nr << inode->i_blkbits, 0, 0);
 }
 
-static inline void vfs_dq_free_space(struct inode *inode, qsize_t nr)
+static inline int dquot_prealloc_block(struct inode *inode, qsize_t nr)
 {
-        vfs_dq_free_space_nodirty(inode, nr);
-        mark_inode_dirty(inode);
-}       
-
-#endif /* CONFIG_QUOTA */
+        int ret;
 
-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);
+        ret = dquot_prealloc_block_nodirty(inode, nr);
+        if (!ret)
+                mark_inode_dirty(inode);
+        return ret;
 }
 
-static inline int vfs_dq_prealloc_block(struct inode *inode, qsize_t nr)
+static inline int dquot_reserve_block(struct inode *inode, qsize_t nr)
 {
-        return vfs_dq_prealloc_space(inode, nr << inode->i_blkbits);
+        return __dquot_alloc_space(inode, nr << inode->i_blkbits, 1, 1);
 }
 
-static inline int vfs_dq_alloc_block_nodirty(struct inode *inode, qsize_t nr)
+static inline int dquot_claim_block(struct inode *inode, qsize_t nr)
 {
-        return vfs_dq_alloc_space_nodirty(inode, nr << inode->i_blkbits);
-}
+        int ret;
 
-static inline int vfs_dq_alloc_block(struct inode *inode, qsize_t nr)
-{
-        return vfs_dq_alloc_space(inode, nr << inode->i_blkbits);
+        ret = dquot_claim_space_nodirty(inode, nr << inode->i_blkbits);
+        if (!ret)
+                mark_inode_dirty(inode);
+        return ret;
 }
 
-static inline int vfs_dq_reserve_block(struct inode *inode, qsize_t nr)
+static inline void dquot_free_space_nodirty(struct inode *inode, qsize_t nr)
 {
-        return vfs_dq_reserve_space(inode, nr << inode->i_blkbits);
+        __dquot_free_space(inode, nr, 0);
 }
 
-static inline int vfs_dq_claim_block(struct inode *inode, qsize_t nr)
+static inline void dquot_free_space(struct inode *inode, qsize_t nr)
 {
-        return vfs_dq_claim_space(inode, nr << inode->i_blkbits);
+        dquot_free_space_nodirty(inode, nr);
+        mark_inode_dirty(inode);
 }
 
-static inline
-void vfs_dq_release_reservation_block(struct inode *inode, qsize_t nr)
+static inline void dquot_free_block_nodirty(struct inode *inode, qsize_t nr)
 {
-        vfs_dq_release_reservation_space(inode, nr << inode->i_blkbits);
+        dquot_free_space_nodirty(inode, nr << inode->i_blkbits);
 }
 
-static inline void vfs_dq_free_block_nodirty(struct inode *inode, qsize_t nr)
+static inline void dquot_free_block(struct inode *inode, qsize_t nr)
 {
-        vfs_dq_free_space_nodirty(inode, nr << inode->i_blkbits);
+        dquot_free_space(inode, nr << inode->i_blkbits);
 }
 
-static inline void vfs_dq_free_block(struct inode *inode, qsize_t nr)
+static inline void dquot_release_reservation_block(struct inode *inode,
+                qsize_t nr)
 {
-        vfs_dq_free_space(inode, nr << inode->i_blkbits);
+        __dquot_free_space(inode, nr << inode->i_blkbits, 1);
 }
 
 #endif /* _LINUX_QUOTAOPS_ */