1 files changed, 61 insertions, 53 deletions

diff --git a/include/linux/quotaops.h b/include/linux/quotaops.h
index 370abb1e99cb..aa36793b48bd 100644
--- a/include/linux/quotaops.h
+++ b/include/linux/quotaops.h
@@ -9,6 +9,10 @@
 
 #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;
@@ -41,15 +45,22 @@ 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 warn, int reserve);
-void __dquot_free_space(struct inode *inode, qsize_t number, int reserve);
+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(const struct inode *inode);
 
 int dquot_claim_space_nodirty(struct inode *inode, qsize_t number);
 void dquot_free_inode(const struct inode *inode);
 
+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);
+}
+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);
@@ -58,27 +69,25 @@ 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,
+int dquot_quota_on(struct super_block *sb, int type, int format_id,
+        char *path);
+int dquot_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,
+int dquot_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 dquot_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 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,
+int dquot_quota_off(struct super_block *sb, int type);
+int dquot_quota_sync(struct super_block *sb, int type, int wait);
+int dquot_get_dqinfo(struct super_block *sb, int type, struct if_dqinfo *ii);
+int dquot_set_dqinfo(struct super_block *sb, int type, struct if_dqinfo *ii);
+int dquot_get_dqblk(struct super_block *sb, int type, qid_t id,
                 struct fs_disk_quota *di);
-int vfs_set_dqblk(struct super_block *sb, int type, qid_t id,
+int dquot_set_dqblk(struct super_block *sb, int type, qid_t id,
                 struct fs_disk_quota *di);
 
 int __dquot_transfer(struct inode *inode, struct dquot **transfer_to);
 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)
 {
@@ -145,20 +154,7 @@ static inline unsigned sb_any_quota_active(struct super_block *sb)
  * Operations supported for diskquotas.
  */
 extern const struct dquot_operations dquot_operations;
-extern const struct quotactl_ops vfs_quotactl_ops;
-
-#define sb_dquot_ops (&dquot_operations)
-#define sb_quotactl_ops (&vfs_quotactl_ops)
-
-/* Cannot be called inside a transaction */
-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;
-}
+extern const struct quotactl_ops dquot_quotactl_ops;
 
 #else
 
@@ -203,12 +199,6 @@ 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 dquot_initialize(struct inode *inode)
 {
 }
@@ -226,39 +216,45 @@ static inline void dquot_free_inode(const struct inode *inode)
 {
 }
 
-static inline int vfs_dq_off(struct super_block *sb, int remount)
+static inline int dquot_transfer(struct inode *inode, struct iattr *iattr)
 {
         return 0;
 }
 
-static inline int vfs_dq_quota_on_remount(struct super_block *sb)
+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;
 }
 
-static inline int dquot_transfer(struct inode *inode, struct iattr *iattr)
+static inline void __dquot_free_space(struct inode *inode, qsize_t number,
+                int flags)
+{
+        if (!(flags & DQUOT_SPACE_RESERVE))
+                inode_sub_bytes(inode, number);
+}
+
+static inline int dquot_claim_space_nodirty(struct inode *inode, qsize_t number)
 {
+        inode_add_bytes(inode, number);
         return 0;
 }
 
-static inline int __dquot_alloc_space(struct inode *inode, qsize_t number,
-                int warn, int reserve)
+static inline int dquot_disable(struct super_block *sb, int type,
+                unsigned int flags)
 {
-        if (!reserve)
-                inode_add_bytes(inode, number);
         return 0;
 }
 
-static inline void __dquot_free_space(struct inode *inode, qsize_t number,
-                int reserve)
+static inline int dquot_suspend(struct super_block *sb, int type)
 {
-        if (!reserve)
-                inode_sub_bytes(inode, number);
+        return 0;
 }
 
-static inline int dquot_claim_space_nodirty(struct inode *inode, qsize_t number)
+static inline int dquot_resume(struct super_block *sb, int type)
 {
-        inode_add_bytes(inode, number);
         return 0;
 }
 
@@ -268,7 +264,13 @@ static inline int dquot_claim_space_nodirty(struct inode *inode, qsize_t number)
 
 static inline int dquot_alloc_space_nodirty(struct inode *inode, qsize_t nr)
 {
-        return __dquot_alloc_space(inode, nr, 1, 0);
+        return __dquot_alloc_space(inode, nr, DQUOT_SPACE_WARN);
+}
+
+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(inode);
 }
 
 static inline int dquot_alloc_space(struct inode *inode, qsize_t nr)
@@ -286,6 +288,11 @@ static inline int dquot_alloc_block_nodirty(struct inode *inode, qsize_t nr)
         return dquot_alloc_space_nodirty(inode, nr << inode->i_blkbits);
 }
 
+static inline void dquot_alloc_block_nofail(struct inode *inode, qsize_t nr)
+{
+        dquot_alloc_space_nofail(inode, nr << inode->i_blkbits);
+}
+
 static inline int dquot_alloc_block(struct inode *inode, qsize_t nr)
 {
         return dquot_alloc_space(inode, nr << inode->i_blkbits);
@@ -293,7 +300,7 @@ static inline int dquot_alloc_block(struct inode *inode, qsize_t nr)
 
 static inline int dquot_prealloc_block_nodirty(struct inode *inode, qsize_t nr)
 {
-        return __dquot_alloc_space(inode, nr << inode->i_blkbits, 0, 0);
+        return __dquot_alloc_space(inode, nr << inode->i_blkbits, 0);
 }
 
 static inline int dquot_prealloc_block(struct inode *inode, qsize_t nr)
@@ -308,7 +315,8 @@ static inline int dquot_prealloc_block(struct inode *inode, qsize_t nr)
 
 static inline int dquot_reserve_block(struct inode *inode, qsize_t nr)
 {
-        return __dquot_alloc_space(inode, nr << inode->i_blkbits, 1, 1);
+        return __dquot_alloc_space(inode, nr << inode->i_blkbits,
+                                DQUOT_SPACE_WARN|DQUOT_SPACE_RESERVE);
 }
 
 static inline int dquot_claim_block(struct inode *inode, qsize_t nr)
@@ -345,7 +353,7 @@ static inline void dquot_free_block(struct inode *inode, qsize_t nr)
 static inline void dquot_release_reservation_block(struct inode *inode,
                 qsize_t nr)
 {
-        __dquot_free_space(inode, nr << inode->i_blkbits, 1);
+        __dquot_free_space(inode, nr << inode->i_blkbits, DQUOT_SPACE_RESERVE);
 }
 
 #endif /* _LINUX_QUOTAOPS_ */