Btrfs: Add a write ahead tree log to optimize synchronous operations

[mv-sheeva.git] / fs / btrfs / btrfs_inode.h

diff --git a/fs/btrfs/btrfs_inode.h b/fs/btrfs/btrfs_inode.h
index 111f90524ae1167842b3f54a1d49f25aac6a1089..fcc8cf27e906c8d865ecb08f8e353ae181656207 100644 (file)
--- a/fs/btrfs/btrfs_inode.h
+++ b/fs/btrfs/btrfs_inode.h
@@ -33,6 +33,7 @@ struct btrfs_inode {
        struct extent_io_tree io_failure_tree;
        struct mutex csum_mutex;
        struct mutex extent_mutex;
+       struct mutex log_mutex;
        struct inode vfs_inode;
        struct btrfs_ordered_inode_tree ordered_tree;
 
@@ -44,10 +45,17 @@ struct btrfs_inode {
 
        struct list_head delalloc_inodes;
 
+       /* full 64 bit generation number */
+       u64 generation;
+
        /*
         * transid of the trans_handle that last modified this inode
         */
        u64 last_trans;
+       /*
+        * transid that last logged this inode
+        */
+       u64 logged_trans;
        u64 delalloc_bytes;
        u64 disk_i_size;
        u32 flags;