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-rw-r--r--fs/ext2/ext2.h36
1 files changed, 18 insertions, 18 deletions
diff --git a/fs/ext2/ext2.h b/fs/ext2/ext2.h
index a08052d..7730388 100644
--- a/fs/ext2/ext2.h
+++ b/fs/ext2/ext2.h
@@ -33,22 +33,9 @@ struct ext2_inode_info {
*/
__u32 i_block_group;
- /*
- * i_next_alloc_block is the logical (file-relative) number of the
- * most-recently-allocated block in this file. Yes, it is misnamed.
- * We use this for detecting linearly ascending allocation requests.
- */
- __u32 i_next_alloc_block;
+ /* block reservation info */
+ struct ext2_block_alloc_info *i_block_alloc_info;
- /*
- * i_next_alloc_goal is the *physical* companion to i_next_alloc_block.
- * it the the physical block number of the block which was most-recently
- * allocated to this file. This give us the goal (target) for the next
- * allocation when we detect linearly ascending requests.
- */
- __u32 i_next_alloc_goal;
- __u32 i_prealloc_block;
- __u32 i_prealloc_count;
__u32 i_dir_start_lookup;
#ifdef CONFIG_EXT2_FS_XATTR
/*
@@ -65,7 +52,16 @@ struct ext2_inode_info {
struct posix_acl *i_default_acl;
#endif
rwlock_t i_meta_lock;
+
+ /*
+ * truncate_mutex is for serialising ext2_truncate() against
+ * ext2_getblock(). It also protects the internals of the inode's
+ * reservation data structures: ext2_reserve_window and
+ * ext2_reserve_window_node.
+ */
+ struct mutex truncate_mutex;
struct inode vfs_inode;
+ struct list_head i_orphan; /* unlinked but open inodes */
};
/*
@@ -91,8 +87,9 @@ static inline struct ext2_inode_info *EXT2_I(struct inode *inode)
/* balloc.c */
extern int ext2_bg_has_super(struct super_block *sb, int group);
extern unsigned long ext2_bg_num_gdb(struct super_block *sb, int group);
-extern int ext2_new_block (struct inode *, unsigned long,
- __u32 *, __u32 *, int *);
+extern ext2_fsblk_t ext2_new_block(struct inode *, unsigned long, int *);
+extern ext2_fsblk_t ext2_new_blocks(struct inode *, unsigned long,
+ unsigned long *, int *);
extern void ext2_free_blocks (struct inode *, unsigned long,
unsigned long);
extern unsigned long ext2_count_free_blocks (struct super_block *);
@@ -101,6 +98,10 @@ extern void ext2_check_blocks_bitmap (struct super_block *);
extern struct ext2_group_desc * ext2_get_group_desc(struct super_block * sb,
unsigned int block_group,
struct buffer_head ** bh);
+extern void ext2_discard_reservation (struct inode *);
+extern int ext2_should_retry_alloc(struct super_block *sb, int *retries);
+extern void ext2_init_block_alloc_info(struct inode *);
+extern void ext2_rsv_window_add(struct super_block *sb, struct ext2_reserve_window_node *rsv);
/* dir.c */
extern int ext2_add_link (struct dentry *, struct inode *);
@@ -128,7 +129,6 @@ extern int ext2_write_inode (struct inode *, int);
extern void ext2_put_inode (struct inode *);
extern void ext2_delete_inode (struct inode *);
extern int ext2_sync_inode (struct inode *);
-extern void ext2_discard_prealloc (struct inode *);
extern int ext2_get_block(struct inode *, sector_t, struct buffer_head *, int);
extern void ext2_truncate (struct inode *);
extern int ext2_setattr (struct dentry *, struct iattr *);
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