Btrfs: corruptions fixed

Signed-off-by: Chris Mason <chris.mason@oracle.com>

diff --git a/fs/btrfs/bit-radix.c b/fs/btrfs/bit-radix.c
index a50a1c4..783f54c 100644 (file)
--- a/fs/btrfs/bit-radix.c
+++ b/fs/btrfs/bit-radix.c
@@ -62,7 +62,6 @@ int clear_radix_bit(struct radix_tree_root *radix, unsigned long bit)
        if (!bits)
                return 0;
        clear_bit(bit_slot, bits + 1);
-#if 0
        for (i = 1; i < BIT_ARRAY_BYTES / sizeof(unsigned long); i++) {
                if (bits[i]) {
                        empty = 0;
@@ -74,7 +73,6 @@ int clear_radix_bit(struct radix_tree_root *radix, unsigned long bit)
                BUG_ON(!bits);
                kmem_cache_free(btrfs_bit_radix_cachep, bits);
        }
-#endif
        return 0;
 }
 

diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c
index 2dbd550..a227e94 100644 (file)
--- a/fs/btrfs/disk-io.c
+++ b/fs/btrfs/disk-io.c
@@ -23,8 +23,6 @@ static int check_tree_block(struct btrfs_root *root, struct buffer_head *buf)
 
 struct buffer_head *btrfs_find_tree_block(struct btrfs_root *root, u64 blocknr)
 {
-       return sb_find_get_block(root->fs_info->sb, blocknr);
-#if 0
        struct address_space *mapping = root->fs_info->btree_inode->i_mapping;
        int blockbits = root->fs_info->sb->s_blocksize_bits;
        unsigned long index = blocknr >> (PAGE_CACHE_SHIFT - blockbits);
@@ -58,14 +56,11 @@ out_unlock:
        }
        page_cache_release(page);
        return ret;
-#endif
 }
 
 struct buffer_head *btrfs_find_create_tree_block(struct btrfs_root *root,
                                                 u64 blocknr)
 {
-       return sb_getblk(root->fs_info->sb, blocknr);
-#if 0
        struct address_space *mapping = root->fs_info->btree_inode->i_mapping;
        int blockbits = root->fs_info->sb->s_blocksize_bits;
        unsigned long index = blocknr >> (PAGE_CACHE_SHIFT - blockbits);
@@ -103,7 +98,6 @@ out_unlock:
                touch_buffer(ret);
        page_cache_release(page);
        return ret;
-#endif
 }
 
 static sector_t max_block(struct block_device *bdev)
@@ -186,7 +180,6 @@ static int csum_tree_block(struct btrfs_root *root, struct buffer_head *bh,
 
 static int btree_writepage(struct page *page, struct writeback_control *wbc)
 {
-#if 0
        struct buffer_head *bh;
        struct btrfs_root *root = btrfs_sb(page->mapping->host->i_sb);
        struct buffer_head *head;
@@ -201,7 +194,6 @@ static int btree_writepage(struct page *page, struct writeback_control *wbc)
                        csum_tree_block(root, bh, 0);
                bh = bh->b_this_page;
        } while (bh != head);
-#endif
        return block_write_full_page(page, btree_get_block, wbc);
 }
 
@@ -218,8 +210,6 @@ static struct address_space_operations btree_aops = {
 
 struct buffer_head *read_tree_block(struct btrfs_root *root, u64 blocknr)
 {
-       return sb_bread(root->fs_info->sb, blocknr);
-#if 0
        struct buffer_head *bh = NULL;
 
        bh = btrfs_find_create_tree_block(root, blocknr);
@@ -243,8 +233,6 @@ struct buffer_head *read_tree_block(struct btrfs_root *root, u64 blocknr)
 fail:
        brelse(bh);
        return NULL;
-
-#endif
 }
 
 int dirty_tree_block(struct btrfs_trans_handle *trans, struct btrfs_root *root,
@@ -323,8 +311,6 @@ struct btrfs_root *open_ctree(struct super_block *sb)
        fs_info->last_inode_alloc = 0;
        fs_info->last_inode_alloc_dirid = 0;
        fs_info->sb = sb;
-       fs_info->btree_inode = NULL;
-#if 0
        fs_info->btree_inode = new_inode(sb);
        fs_info->btree_inode->i_ino = 1;
        fs_info->btree_inode->i_nlink = 1;
@@ -332,7 +318,6 @@ struct btrfs_root *open_ctree(struct super_block *sb)
        fs_info->btree_inode->i_mapping->a_ops = &btree_aops;
        insert_inode_hash(fs_info->btree_inode);
        mapping_set_gfp_mask(fs_info->btree_inode->i_mapping, GFP_NOFS);
-#endif
        fs_info->hash_tfm = crypto_alloc_hash("sha256", 0, CRYPTO_ALG_ASYNC);
        spin_lock_init(&fs_info->hash_lock);
        if (!fs_info->hash_tfm || IS_ERR(fs_info->hash_tfm)) {
@@ -435,8 +420,8 @@ int close_ctree(struct btrfs_root *root)
        btrfs_block_release(root, root->commit_root);
        btrfs_block_release(root, root->fs_info->sb_buffer);
        crypto_free_hash(root->fs_info->hash_tfm);
-       // truncate_inode_pages(root->fs_info->btree_inode->i_mapping, 0);
-       // iput(root->fs_info->btree_inode);
+       truncate_inode_pages(root->fs_info->btree_inode->i_mapping, 0);
+       iput(root->fs_info->btree_inode);
        kfree(root->fs_info->extent_root);
        kfree(root->fs_info->inode_root);
        kfree(root->fs_info->tree_root);
@@ -447,6 +432,6 @@ int close_ctree(struct btrfs_root *root)
 
 void btrfs_block_release(struct btrfs_root *root, struct buffer_head *buf)
 {
-       // brelse(buf);
+       brelse(buf);
 }
 

diff --git a/fs/btrfs/inode-map.c b/fs/btrfs/inode-map.c
index fa4adb8..b3de823 100644 (file)
--- a/fs/btrfs/inode-map.c
+++ b/fs/btrfs/inode-map.c
@@ -10,7 +10,7 @@ int btrfs_find_free_objectid(struct btrfs_trans_handle *trans,
                             struct btrfs_root *fs_root,
                             u64 dirid, u64 *objectid)
 {
-       struct btrfs_path path;
+       struct btrfs_path *path;
        struct btrfs_key key;
        int ret;
        u64 hole_size = 0;
@@ -31,20 +31,22 @@ int btrfs_find_free_objectid(struct btrfs_trans_handle *trans,
        btrfs_set_key_type(&search_key, BTRFS_INODE_MAP_ITEM_KEY);
        search_key.offset = 0;
 
-       btrfs_init_path(&path);
+       path = btrfs_alloc_path();
+       BUG_ON(!path);
+       btrfs_init_path(path);
        start_found = 0;
-       ret = btrfs_search_slot(trans, root, &search_key, &path, 0, 0);
+       ret = btrfs_search_slot(trans, root, &search_key, path, 0, 0);
        if (ret < 0)
                goto error;
 
-       if (path.slots[0] > 0)
-               path.slots[0]--;
+       if (path->slots[0] > 0)
+               path->slots[0]--;
 
        while (1) {
-               l = btrfs_buffer_leaf(path.nodes[0]);
-               slot = path.slots[0];
+               l = btrfs_buffer_leaf(path->nodes[0]);
+               slot = path->slots[0];
                if (slot >= btrfs_header_nritems(&l->header)) {
-                       ret = btrfs_next_leaf(root, &path);
+                       ret = btrfs_next_leaf(root, path);
                        if (ret == 0)
                                continue;
                        if (ret < 0)
@@ -72,17 +74,19 @@ int btrfs_find_free_objectid(struct btrfs_trans_handle *trans,
                }
                start_found = 1;
                last_ino = key.objectid + 1;
-               path.slots[0]++;
+               path->slots[0]++;
        }
        // FIXME -ENOSPC
 found:
        root->fs_info->last_inode_alloc = *objectid;
        root->fs_info->last_inode_alloc_dirid = dirid;
-       btrfs_release_path(root, &path);
+       btrfs_release_path(root, path);
+       btrfs_free_path(path);
        BUG_ON(*objectid < search_start);
        return 0;
 error:
-       btrfs_release_path(root, &path);
+       btrfs_release_path(root, path);
+       btrfs_free_path(path);
        return ret;
 }
 
@@ -91,7 +95,7 @@ int btrfs_insert_inode_map(struct btrfs_trans_handle *trans,
                           u64 objectid, struct btrfs_key *location)
 {
        int ret = 0;
-       struct btrfs_path path;
+       struct btrfs_path *path;
        struct btrfs_inode_map_item *inode_item;
        struct btrfs_key key;
        struct btrfs_root *inode_root = fs_root->fs_info->inode_root;
@@ -100,18 +104,21 @@ int btrfs_insert_inode_map(struct btrfs_trans_handle *trans,
        key.flags = 0;
        btrfs_set_key_type(&key, BTRFS_INODE_MAP_ITEM_KEY);
        key.offset = 0;
-       btrfs_init_path(&path);
-       ret = btrfs_insert_empty_item(trans, inode_root, &path, &key,
+       path = btrfs_alloc_path();
+       BUG_ON(!path);
+       btrfs_init_path(path);
+       ret = btrfs_insert_empty_item(trans, inode_root, path, &key,
                                      sizeof(struct btrfs_inode_map_item));
        if (ret)
                goto out;
 
-       inode_item = btrfs_item_ptr(btrfs_buffer_leaf(path.nodes[0]),
-                                   path.slots[0], struct btrfs_inode_map_item);
+       inode_item = btrfs_item_ptr(btrfs_buffer_leaf(path->nodes[0]),
+                                   path->slots[0], struct btrfs_inode_map_item);
        btrfs_cpu_key_to_disk(&inode_item->key, location);
-       btrfs_mark_buffer_dirty(path.nodes[0]);
+       btrfs_mark_buffer_dirty(path->nodes[0]);
 out:
-       btrfs_release_path(inode_root, &path);
+       btrfs_release_path(inode_root, path);
+       btrfs_free_path(path);
        return ret;
 }
 

diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c
index c260fca..9fd87f5 100644 (file)
--- a/fs/btrfs/super.c
+++ b/fs/btrfs/super.c
@@ -49,6 +49,7 @@ static void btrfs_read_locked_inode(struct inode *inode)
        ret = btrfs_lookup_inode(NULL, root, path, inode->i_ino, 0);
        if (ret) {
                btrfs_release_path(root, path);
+               btrfs_free_path(path);
                mutex_unlock(&root->fs_info->fs_mutex);
                make_bad_inode(inode);
                return;
@@ -215,7 +216,6 @@ static int btrfs_rmdir(struct inode *dir, struct dentry *dentry)
                goto out;
        }
        btrfs_release_path(root, path);
-       btrfs_free_path(path);
 
        /* now the directory is empty */
        err = btrfs_unlink_trans(trans, root, dir, dentry);
@@ -223,6 +223,8 @@ static int btrfs_rmdir(struct inode *dir, struct dentry *dentry)
                inode->i_size = 0;
        }
 out:
+       btrfs_release_path(root, path);
+       btrfs_free_path(path);
        mutex_unlock(&root->fs_info->fs_mutex);
        ret = btrfs_end_transaction(trans, root);
        if (ret && !err)
@@ -800,11 +802,10 @@ static int btrfs_sync_fs(struct super_block *sb, int wait)
 
        sb->s_dirt = 0;
        if (!wait) {
-               // filemap_flush(root->fs_info->btree_inode->i_mapping);
-               filemap_flush(root->fs_info->sb->s_bdev->bd_inode->i_mapping);
+               filemap_flush(root->fs_info->btree_inode->i_mapping);
                return 0;
        }
-       filemap_write_and_wait(root->fs_info->sb->s_bdev->bd_inode->i_mapping);
+       filemap_write_and_wait(root->fs_info->btree_inode->i_mapping);
        mutex_lock(&root->fs_info->fs_mutex);
        trans = btrfs_start_transaction(root, 1);
        ret = btrfs_commit_transaction(trans, root);

diff --git a/fs/btrfs/transaction.c b/fs/btrfs/transaction.c
index 72b52e1..2b0f98c 100644 (file)
--- a/fs/btrfs/transaction.c
+++ b/fs/btrfs/transaction.c
@@ -88,7 +88,7 @@ int btrfs_end_transaction(struct btrfs_trans_handle *trans,
 int btrfs_write_and_wait_transaction(struct btrfs_trans_handle *trans,
                                     struct btrfs_root *root)
 {
-       filemap_write_and_wait(root->fs_info->sb->s_bdev->bd_inode->i_mapping);
+       filemap_write_and_wait(root->fs_info->btree_inode->i_mapping);
        return 0;
 }