Btrfs: Add checking of csum tree in balancing code

[safe/jmp/linux-2.6] / fs / btrfs / btrfs_inode.h

diff --git a/fs/btrfs/btrfs_inode.h b/fs/btrfs/btrfs_inode.h
index 9b9db9c..1b9ec1a 100644 (file)
--- a/fs/btrfs/btrfs_inode.h
+++ b/fs/btrfs/btrfs_inode.h
@@ -21,27 +21,113 @@
 
 #include "extent_map.h"
 #include "extent_io.h"
+#include "ordered-data.h"
 
 /* in memory btrfs inode */
 struct btrfs_inode {
+       /* which subvolume this inode belongs to */
        struct btrfs_root *root;
+
+       /* the block group preferred for allocations.  This pointer is buggy
+        * and needs to be replaced with a bytenr instead
+        */
        struct btrfs_block_group_cache *block_group;
+
+       /* key used to find this inode on disk.  This is used by the code
+        * to read in roots of subvolumes
+        */
        struct btrfs_key location;
+
+       /* the extent_tree has caches of all the extent mappings to disk */
        struct extent_map_tree extent_tree;
+
+       /* the io_tree does range state (DIRTY, LOCKED etc) */
        struct extent_io_tree io_tree;
-       struct inode vfs_inode;
 
-       u64 ordered_trans;
+       /* special utility tree used to record which mirrors have already been
+        * tried when checksums fail for a given block
+        */
+       struct extent_io_tree io_failure_tree;
+
+       /* held while inesrting or deleting extents from files */
+       struct mutex extent_mutex;
+
+       /* held while logging the inode in tree-log.c */
+       struct mutex log_mutex;
+
+       /* used to order data wrt metadata */
+       struct btrfs_ordered_inode_tree ordered_tree;
+
+       /* standard acl pointers */
+       struct posix_acl *i_acl;
+       struct posix_acl *i_default_acl;
+
+       /* for keeping track of orphaned inodes */
+       struct list_head i_orphan;
+
+       /* list of all the delalloc inodes in the FS.  There are times we need
+        * to write all the delalloc pages to disk, and this list is used
+        * to walk them all.
+        */
+       struct list_head delalloc_inodes;
+
+       /* full 64 bit generation number, struct vfs_inode doesn't have a big
+        * enough field for this.
+        */
+       u64 generation;
+
+       /* sequence number for NFS changes */
+       u64 sequence;
+
        /*
         * transid of the trans_handle that last modified this inode
         */
        u64 last_trans;
+       /*
+        * transid that last logged this inode
+        */
+       u64 logged_trans;
+
+       /*
+        * trans that last made a change that should be fully fsync'd.  This
+        * gets reset to zero each time the inode is logged
+        */
+       u64 log_dirty_trans;
+
+       /* total number of bytes pending delalloc, used by stat to calc the
+        * real block usage of the file
+        */
        u64 delalloc_bytes;
+
+       /*
+        * the size of the file stored in the metadata on disk.  data=ordered
+        * means the in-memory i_size might be larger than the size on disk
+        * because not all the blocks are written yet.
+        */
+       u64 disk_i_size;
+
+       /* flags field from the on disk inode */
        u32 flags;
+
+       /*
+        * if this is a directory then index_cnt is the counter for the index
+        * number for new files that are created
+        */
+       u64 index_cnt;
+
+       struct inode vfs_inode;
 };
+
 static inline struct btrfs_inode *BTRFS_I(struct inode *inode)
 {
        return container_of(inode, struct btrfs_inode, vfs_inode);
 }
 
+static inline void btrfs_i_size_write(struct inode *inode, u64 size)
+{
+       inode->i_size = size;
+       BTRFS_I(inode)->disk_i_size = size;
+}
+
+
 #endif