@@ -4915,6 +4915,62 @@ out:
}
/*
+ * Set dir isize to @isize
+ *
+ * Returns <0 means on error
+ * Returns 0 means successful repair
+ */
+static int repair_dir_isize_lowmem(struct btrfs_root *root,
+ struct btrfs_path *path,
+ u64 ino, u64 isize)
+{
+ struct btrfs_trans_handle *trans;
+ struct btrfs_inode_item *ii;
+ struct btrfs_key key;
+ struct btrfs_key research_key;
+ int ret;
+ int ret2;
+
+ key.objectid = ino;
+ key.type = BTRFS_INODE_ITEM_KEY;
+ key.offset = 0;
+
+ btrfs_item_key_to_cpu(path->nodes[0], &research_key, path->slots[0]);
+ btrfs_release_path(path);
+
+ trans = btrfs_start_transaction(root, 1);
+ if (IS_ERR(trans)) {
+ ret = PTR_ERR(trans);
+ goto out;
+ }
+
+ ret = btrfs_search_slot(trans, root, &key, path, 0, 1);
+ if (ret < 0)
+ goto out;
+ if (ret > 0) {
+ ret = -ENOENT;
+ goto out;
+ }
+
+ ii = btrfs_item_ptr(path->nodes[0], path->slots[0],
+ struct btrfs_inode_item);
+ btrfs_set_inode_size(path->nodes[0], ii, isize);
+ btrfs_mark_buffer_dirty(path->nodes[0]);
+
+ printf("reset isize for inode %llu root %llu\n", ino,
+ root->root_key.objectid);
+
+ btrfs_commit_transaction(trans, root);
+out:
+ if (ret < 0)
+ error("failed to reset isize for inode %llu root %llu due to %s",
+ ino, root->root_key.objectid, strerror(-ret));
+ btrfs_release_path(path);
+ ret2 = btrfs_search_slot(NULL, root, &research_key, path, 0, 0);
+ return ret2 < 0 ? ret2 : ret;
+}
+
+/*
* Check INODE_ITEM and related ITEMs (the same inode number)
* 1. check link count
* 2. check inode ref/extref
@@ -5050,9 +5106,15 @@ out:
}
if (isize != size) {
- err |= ISIZE_ERROR;
- error("root %llu DIR INODE [%llu] size(%llu) not equal to %llu",
- root->objectid, inode_id, isize, size);
+ if (repair)
+ ret = repair_dir_isize_lowmem(root, path,
+ inode_id, size);
+
+ if (!repair || ret) {
+ err |= ISIZE_ERROR;
+ error("root %llu DIR INODE [%llu] size(%llu) not equal to %llu",
+ root->objectid, inode_id, isize, size);
+ }
}
} else {
if (nlink != refs) {
After traversal of whole directory, we should get the actual isize. Introduce function 'repair_dir_isize_lowmem' to set isize in the directory inode item to actual size. After call of the function, the wrong dir isize should have been corrected. Signed-off-by: Su Yue <suy.fnst@cn.fujitsu.com> --- cmds-check.c | 68 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++--- 1 file changed, 65 insertions(+), 3 deletions(-)