Btrfs: Add simple stripe size parameter

[linux-2.6-block.git] / fs / btrfs / disk-io.c

diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c
index eef4ab56b9ca91d67aba2978f961850d90c04485..60a30da6af00e2dbf09408bdbddbe6b674f2da00 100644 (file)
--- a/fs/btrfs/disk-io.c
+++ b/fs/btrfs/disk-io.c
@@ -355,7 +355,7 @@ int wait_on_tree_block_writeback(struct btrfs_root *root,
 }
 
 static int __setup_root(u32 nodesize, u32 leafsize, u32 sectorsize,
-                       struct btrfs_root *root,
+                       u32 stripesize, struct btrfs_root *root,
                        struct btrfs_fs_info *fs_info,
                        u64 objectid)
 {
@@ -365,6 +365,7 @@ static int __setup_root(u32 nodesize, u32 leafsize, u32 sectorsize,
        root->sectorsize = sectorsize;
        root->nodesize = nodesize;
        root->leafsize = leafsize;
+       root->stripesize = stripesize;
        root->ref_cows = 0;
        root->fs_info = fs_info;
        root->objectid = objectid;
@@ -393,7 +394,8 @@ static int find_and_setup_root(struct btrfs_root *tree_root,
        u32 blocksize;
 
        __setup_root(tree_root->nodesize, tree_root->leafsize,
-                    tree_root->sectorsize, root, fs_info, objectid);
+                    tree_root->sectorsize, tree_root->stripesize,
+                    root, fs_info, objectid);
        ret = btrfs_find_last_root(tree_root, objectid,
                                   &root->root_item, &root->root_key);
        BUG_ON(ret);
@@ -430,8 +432,8 @@ struct btrfs_root *btrfs_read_fs_root_no_radix(struct btrfs_fs_info *fs_info,
        }
 
        __setup_root(tree_root->nodesize, tree_root->leafsize,
-                    tree_root->sectorsize, root, fs_info,
-                    location->objectid);
+                    tree_root->sectorsize, tree_root->stripesize,
+                    root, fs_info, location->objectid);
 
        path = btrfs_alloc_path();
        BUG_ON(!path);
@@ -537,6 +539,7 @@ struct btrfs_root *open_ctree(struct super_block *sb)
        u32 nodesize;
        u32 leafsize;
        u32 blocksize;
+       u32 stripesize;
        struct btrfs_root *extent_root = kmalloc(sizeof(struct btrfs_root),
                                                 GFP_NOFS);
        struct btrfs_root *tree_root = kmalloc(sizeof(struct btrfs_root),
@@ -607,7 +610,7 @@ struct btrfs_root *open_ctree(struct super_block *sb)
                goto fail_iput;
        }
 #endif
-       __setup_root(512, 512, 512, tree_root,
+       __setup_root(512, 512, 512, 512, tree_root,
                     fs_info, BTRFS_ROOT_TREE_OBJECTID);
 
        fs_info->sb_buffer = read_tree_block(tree_root,
@@ -630,9 +633,11 @@ struct btrfs_root *open_ctree(struct super_block *sb)
        nodesize = btrfs_super_nodesize(disk_super);
        leafsize = btrfs_super_leafsize(disk_super);
        sectorsize = btrfs_super_sectorsize(disk_super);
+       stripesize = btrfs_super_stripesize(disk_super);
        tree_root->nodesize = nodesize;
        tree_root->leafsize = leafsize;
        tree_root->sectorsize = sectorsize;
+       tree_root->stripesize = stripesize;
        sb_set_blocksize(sb, sectorsize);
 
        i_size_write(fs_info->btree_inode,