Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4

[pandora-kernel.git] / include / linux / quotaops.h

diff --git a/include/linux/quotaops.h b/include/linux/quotaops.h
index e6fa7ac..e38ae53 100644 (file)
--- a/include/linux/quotaops.h
+++ b/include/linux/quotaops.h
@@ -9,11 +9,23 @@
 
 #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;
 }
 
+/* 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 && ia->ia_uid != inode->i_uid) ||
+               (ia->ia_valid & ATTR_GID && ia->ia_gid != inode->i_gid);
+}
+
 #if defined(CONFIG_QUOTA)
 
 /*
@@ -33,9 +45,8 @@ 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);
 
@@ -63,9 +74,12 @@ 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, struct if_dqblk *di);
-int vfs_set_dqblk(struct super_block *sb, int type, qid_t id, struct if_dqblk *di);
+int vfs_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,
+               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);
 
@@ -231,17 +245,17 @@ static inline int dquot_transfer(struct inode *inode, struct iattr *iattr)
 }
 
 static inline int __dquot_alloc_space(struct inode *inode, qsize_t number,
-               int warn, int reserve)
+               int flags)
 {
-       if (!reserve)
+       if (!(flags & DQUOT_SPACE_RESERVE))
                inode_add_bytes(inode, number);
        return 0;
 }
 
 static inline void __dquot_free_space(struct inode *inode, qsize_t number,
-               int reserve)
+               int flags)
 {
-       if (!reserve)
+       if (!(flags & DQUOT_SPACE_RESERVE))
                inode_sub_bytes(inode, number);
 }
 
@@ -257,7 +271,13 @@ 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)
@@ -275,6 +295,11 @@ 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);
@@ -282,7 +307,7 @@ 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)
@@ -297,7 +322,8 @@ 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)
@@ -334,7 +360,7 @@ 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_ */