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-rw-r--r--fs/btrfs/export.c26
1 files changed, 11 insertions, 15 deletions
diff --git a/fs/btrfs/export.c b/fs/btrfs/export.c
index 797b4cbc3786..a913b9befe68 100644
--- a/fs/btrfs/export.c
+++ b/fs/btrfs/export.c
@@ -147,7 +147,6 @@ static struct dentry *btrfs_get_parent(struct dentry *child)
147 struct btrfs_key key; 147 struct btrfs_key key;
148 struct btrfs_path *path; 148 struct btrfs_path *path;
149 struct extent_buffer *leaf; 149 struct extent_buffer *leaf;
150 u32 nritems;
151 int slot; 150 int slot;
152 u64 objectid; 151 u64 objectid;
153 int ret; 152 int ret;
@@ -156,27 +155,24 @@ static struct dentry *btrfs_get_parent(struct dentry *child)
156 155
157 key.objectid = dir->i_ino; 156 key.objectid = dir->i_ino;
158 btrfs_set_key_type(&key, BTRFS_INODE_REF_KEY); 157 btrfs_set_key_type(&key, BTRFS_INODE_REF_KEY);
159 key.offset = 0; 158 key.offset = (u64)-1;
160 ret = btrfs_search_slot(NULL, root, &key, path, 0, 0);
161 BUG_ON(ret == 0);
162 ret = 0;
163 159
160 ret = btrfs_search_slot(NULL, root, &key, path, 0, 0);
164 leaf = path->nodes[0]; 161 leaf = path->nodes[0];
165 slot = path->slots[0]; 162 slot = path->slots[0];
166 nritems = btrfs_header_nritems(leaf); 163 if (ret < 0 || slot == 0) {
167 if (slot >= nritems) { 164 btrfs_free_path(path);
168 ret = btrfs_next_leaf(root, path); 165 goto out;
169 if (ret) {
170 btrfs_free_path(path);
171 goto out;
172 }
173 leaf = path->nodes[0];
174 slot = path->slots[0];
175 } 166 }
167 /* btrfs_search_slot() returns the slot where we'd want to insert
168 an INODE_REF_KEY for parent inode #0xFFFFFFFFFFFFFFFF. The _real_
169 one, telling us what the parent inode _actually_ is, will be in
170 the slot _before_ the one that btrfs_search_slot() returns. */
171 slot--;
176 172
173 btrfs_item_key_to_cpu(leaf, &key, slot);
177 btrfs_free_path(path); 174 btrfs_free_path(path);
178 175
179 btrfs_item_key_to_cpu(leaf, &key, slot);
180 if (key.objectid != dir->i_ino || key.type != BTRFS_INODE_REF_KEY) 176 if (key.objectid != dir->i_ino || key.type != BTRFS_INODE_REF_KEY)
181 goto out; 177 goto out;
182 178