Btrfs: Add zlib compression support

[linux-2.6-omap-h63xx.git] / fs / btrfs / extent-tree.c

diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
index 280ac1aa9b6d7d39816a24283836cdaa6de60cf4..bbf04e80a1a3c2b130b223b44c7858f52441b39e 100644 (file)
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -3278,6 +3278,7 @@ static int noinline relocate_data_extent(struct inode *reloc_inode,
 
        em->start = extent_key->objectid - offset;
        em->len = extent_key->offset;
+       em->block_len = extent_key->offset;
        em->block_start = extent_key->objectid;
        em->bdev = root->fs_info->fs_devices->latest_bdev;
        set_bit(EXTENT_FLAG_PINNED, &em->flags);
@@ -3314,10 +3315,14 @@ struct btrfs_ref_path {
 };
 
 struct disk_extent {
+       u64 ram_bytes;
        u64 disk_bytenr;
        u64 disk_num_bytes;
        u64 offset;
        u64 num_bytes;
+       u8 compression;
+       u8 encryption;
+       u16 other_encoding;
 };
 
 static int is_cowonly_root(u64 root_objectid)
@@ -3631,6 +3636,11 @@ static int noinline get_new_locations(struct inode *reloc_inode,
                        btrfs_file_extent_disk_num_bytes(leaf, fi);
                exts[nr].offset = btrfs_file_extent_offset(leaf, fi);
                exts[nr].num_bytes = btrfs_file_extent_num_bytes(leaf, fi);
+               exts[nr].ram_bytes = btrfs_file_extent_ram_bytes(leaf, fi);
+               exts[nr].compression = btrfs_file_extent_compression(leaf, fi);
+               exts[nr].encryption = btrfs_file_extent_encryption(leaf, fi);
+               exts[nr].other_encoding = btrfs_file_extent_other_encoding(leaf,
+                                                                          fi);
                WARN_ON(exts[nr].offset > 0);
                WARN_ON(exts[nr].num_bytes != exts[nr].disk_num_bytes);
 
@@ -3846,6 +3856,8 @@ next:
                                                new_extents[0].disk_bytenr);
                        btrfs_set_file_extent_disk_num_bytes(leaf, fi,
                                                new_extents[0].disk_num_bytes);
+                       btrfs_set_file_extent_ram_bytes(leaf, fi,
+                                               new_extents[0].ram_bytes);
                        ext_offset += new_extents[0].offset;
                        btrfs_set_file_extent_offset(leaf, fi, ext_offset);
                        btrfs_mark_buffer_dirty(leaf);
@@ -3911,6 +3923,16 @@ next:
                                                new_extents[i].disk_bytenr);
                                btrfs_set_file_extent_disk_num_bytes(leaf, fi,
                                                new_extents[i].disk_num_bytes);
+                               btrfs_set_file_extent_ram_bytes(leaf, fi,
+                                               new_extents[i].ram_bytes);
+
+                               btrfs_set_file_extent_compression(leaf, fi,
+                                               new_extents[i].compression);
+                               btrfs_set_file_extent_encryption(leaf, fi,
+                                               new_extents[i].encryption);
+                               btrfs_set_file_extent_other_encoding(leaf, fi,
+                                               new_extents[i].other_encoding);
+
                                btrfs_set_file_extent_num_bytes(leaf, fi,
                                                        extent_len);
                                ext_offset += new_extents[i].offset;
@@ -4169,6 +4191,8 @@ static int noinline replace_extents_in_leaf(struct btrfs_trans_handle *trans,
                ref->extents[ext_index].num_bytes = new_extent->disk_num_bytes;
 
                btrfs_set_file_extent_generation(leaf, fi, trans->transid);
+               btrfs_set_file_extent_ram_bytes(leaf, fi,
+                                               new_extent->ram_bytes);
                btrfs_set_file_extent_disk_bytenr(leaf, fi,
                                                new_extent->disk_bytenr);
                btrfs_set_file_extent_disk_num_bytes(leaf, fi,
@@ -4847,7 +4871,8 @@ static struct inode noinline *create_reloc_inode(struct btrfs_fs_info *fs_info,
        BUG_ON(err);
 
        err = btrfs_insert_file_extent(trans, root, objectid, 0, 0, 0,
-                                      group->key.offset, 0);
+                                      group->key.offset, 0, group->key.offset,
+                                      0, 0, 0);
        BUG_ON(err);
 
        inode = btrfs_iget_locked(root->fs_info->sb, objectid, root);