ext2_xattr_delete_inode(struct inode *inode)
{
	struct buffer_head *bh = NULL;
	struct mb_cache_entry *ce;

	down_write(&EXT2_I(inode)->xattr_sem);
	if (!EXT2_I(inode)->i_file_acl)
		goto cleanup;
	bh = sb_bread(inode->i_sb, EXT2_I(inode)->i_file_acl);
	if (!bh) {
		ext2_error(inode->i_sb, "ext2_xattr_delete_inode",
			"inode %ld: block %d read error", inode->i_ino,
			EXT2_I(inode)->i_file_acl);
		goto cleanup;
	}
	ea_bdebug(bh, "b_count=%d", atomic_read(&(bh->b_count)));
	if (HDR(bh)->h_magic != cpu_to_le32(EXT2_XATTR_MAGIC) ||
	    HDR(bh)->h_blocks != cpu_to_le32(1)) {
		ext2_error(inode->i_sb, "ext2_xattr_delete_inode",
			"inode %ld: bad block %d", inode->i_ino,
			EXT2_I(inode)->i_file_acl);
		goto cleanup;
	}
	ce = mb_cache_entry_get(ext2_xattr_cache, bh->b_bdev, bh->b_blocknr);
	lock_buffer(bh);
	if (HDR(bh)->h_refcount == cpu_to_le32(1)) {
		if (ce)
			mb_cache_entry_free(ce);
		ext2_free_blocks(inode, EXT2_I(inode)->i_file_acl, 1);
		get_bh(bh);
		bforget(bh);
		unlock_buffer(bh);
	} else {
		le32_add_cpu(&HDR(bh)->h_refcount, -1);
		if (ce)
			mb_cache_entry_release(ce);
		ea_bdebug(bh, "refcount now=%d",
			le32_to_cpu(HDR(bh)->h_refcount));
		unlock_buffer(bh);
		mark_buffer_dirty(bh);
		if (IS_SYNC(inode))
			sync_dirty_buffer(bh);
		dquot_free_block_nodirty(inode, 1);
	}
	EXT2_I(inode)->i_file_acl = 0;

cleanup:
	brelse(bh);
	up_write(&EXT2_I(inode)->xattr_sem);
}
Weaknesses in this category are typically found in functionality that processes data. Data processing is the manipulation of input to retrieve or save information.