Merge tag 'v2.6.38' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6

[mv-sheeva.git] / fs / btrfs / tree-log.c

diff --git a/fs/btrfs/tree-log.c b/fs/btrfs/tree-log.c
index 054744ac571907e4c76a5e35f35b8baba24152e2..a4bbb854dfd21eea39614d5f79b66bd6d237564e 100644 (file)
--- a/fs/btrfs/tree-log.c
+++ b/fs/btrfs/tree-log.c
@@ -338,6 +338,12 @@ static noinline int overwrite_item(struct btrfs_trans_handle *trans,
                }
                dst_copy = kmalloc(item_size, GFP_NOFS);
                src_copy = kmalloc(item_size, GFP_NOFS);
+               if (!dst_copy || !src_copy) {
+                       btrfs_release_path(root, path);
+                       kfree(dst_copy);
+                       kfree(src_copy);
+                       return -ENOMEM;
+               }
 
                read_extent_buffer(eb, src_copy, src_ptr, item_size);
 
@@ -665,6 +671,9 @@ static noinline int drop_one_dir_item(struct btrfs_trans_handle *trans,
        btrfs_dir_item_key_to_cpu(leaf, di, &location);
        name_len = btrfs_dir_name_len(leaf, di);
        name = kmalloc(name_len, GFP_NOFS);
+       if (!name)
+               return -ENOMEM;
+
        read_extent_buffer(leaf, name, (unsigned long)(di + 1), name_len);
        btrfs_release_path(root, path);
 
@@ -744,6 +753,9 @@ static noinline int backref_in_log(struct btrfs_root *log,
        int match = 0;
 
        path = btrfs_alloc_path();
+       if (!path)
+               return -ENOMEM;
+
        ret = btrfs_search_slot(NULL, log, key, path, 0, 0);
        if (ret != 0)
                goto out;
@@ -967,6 +979,8 @@ static noinline int fixup_inode_link_count(struct btrfs_trans_handle *trans,
        key.offset = (u64)-1;
 
        path = btrfs_alloc_path();
+       if (!path)
+               return -ENOMEM;
 
        while (1) {
                ret = btrfs_search_slot(NULL, root, &key, path, 0, 0);
@@ -1178,6 +1192,9 @@ static noinline int replay_one_name(struct btrfs_trans_handle *trans,
 
        name_len = btrfs_dir_name_len(eb, di);
        name = kmalloc(name_len, GFP_NOFS);
+       if (!name)
+               return -ENOMEM;
+
        log_type = btrfs_dir_type(eb, di);
        read_extent_buffer(eb, name, (unsigned long)(di + 1),
                   name_len);
@@ -1692,6 +1709,8 @@ static noinline int walk_down_log_tree(struct btrfs_trans_handle *trans,
                root_owner = btrfs_header_owner(parent);
 
                next = btrfs_find_create_tree_block(root, bytenr, blocksize);
+               if (!next)
+                       return -ENOMEM;
 
                if (*level == 1) {
                        wc->process_func(root, next, wc, ptr_gen);
@@ -2032,6 +2051,7 @@ int btrfs_sync_log(struct btrfs_trans_handle *trans,
                wait_log_commit(trans, log_root_tree,
                                log_root_tree->log_transid);
                mutex_unlock(&log_root_tree->log_mutex);
+               ret = 0;
                goto out;
        }
        atomic_set(&log_root_tree->log_commit[index2], 1);
@@ -2096,7 +2116,7 @@ out:
        smp_mb();
        if (waitqueue_active(&root->log_commit_wait[index1]))
                wake_up(&root->log_commit_wait[index1]);
-       return 0;
+       return ret;
 }
 
 static void free_log_tree(struct btrfs_trans_handle *trans,
@@ -2194,6 +2214,9 @@ int btrfs_del_dir_entries_in_log(struct btrfs_trans_handle *trans,
 
        log = root->log_root;
        path = btrfs_alloc_path();
+       if (!path)
+               return -ENOMEM;
+
        di = btrfs_lookup_dir_item(trans, log, path, dir->i_ino,
                                   name, name_len, -1);
        if (IS_ERR(di)) {
@@ -2594,6 +2617,9 @@ static noinline int copy_items(struct btrfs_trans_handle *trans,
 
        ins_data = kmalloc(nr * sizeof(struct btrfs_key) +
                           nr * sizeof(u32), GFP_NOFS);
+       if (!ins_data)
+               return -ENOMEM;
+
        ins_sizes = (u32 *)ins_data;
        ins_keys = (struct btrfs_key *)(ins_data + nr * sizeof(u32));
 
@@ -2725,7 +2751,13 @@ static int btrfs_log_inode(struct btrfs_trans_handle *trans,
        log = root->log_root;
 
        path = btrfs_alloc_path();
+       if (!path)
+               return -ENOMEM;
        dst_path = btrfs_alloc_path();
+       if (!dst_path) {
+               btrfs_free_path(path);
+               return -ENOMEM;
+       }
 
        min_key.objectid = inode->i_ino;
        min_key.type = BTRFS_INODE_ITEM_KEY;
@@ -3080,6 +3112,7 @@ int btrfs_recover_log_trees(struct btrfs_root *log_root_tree)
        BUG_ON(!path);
 
        trans = btrfs_start_transaction(fs_info->tree_root, 0);
+       BUG_ON(IS_ERR(trans));
 
        wc.trans = trans;
        wc.pin = 1;