Re: [RFC][PATCH 0/5] do not dereference NULL pools in pools' destroy() functions

[Sergey Senozhatsky]

On (06/10/15 07:46), Julia Lawall wrote:
> > > Well I like it, even though it's going to cause a zillion little cleanup
> > > patches.
> 
> Actually only at most 87.  There are some functions that look quite a bit 
> nicer with the change, like:
> 
>  void jffs2_destroy_slab_caches(void)
>  {
> -       if(full_dnode_slab)
> -               kmem_cache_destroy(full_dnode_slab);
> -       if(raw_dirent_slab)
> -               kmem_cache_destroy(raw_dirent_slab);
> -       if(raw_inode_slab)
> -               kmem_cache_destroy(raw_inode_slab);
> -       if(tmp_dnode_info_slab)
> -               kmem_cache_destroy(tmp_dnode_info_slab);
> -       if(raw_node_ref_slab)
> -               kmem_cache_destroy(raw_node_ref_slab);
> -       if(node_frag_slab)
> -               kmem_cache_destroy(node_frag_slab);
> -       if(inode_cache_slab)
> -               kmem_cache_destroy(inode_cache_slab);
> +       kmem_cache_destroy(full_dnode_slab);
> +       kmem_cache_destroy(raw_dirent_slab);
> +       kmem_cache_destroy(raw_inode_slab);
> +       kmem_cache_destroy(tmp_dnode_info_slab);
> +       kmem_cache_destroy(raw_node_ref_slab);
> +       kmem_cache_destroy(node_frag_slab);
> +       kmem_cache_destroy(inode_cache_slab);
>  #ifdef CONFIG_JFFS2_FS_XATTR
> -       if (xattr_datum_cache)
> -               kmem_cache_destroy(xattr_datum_cache);
> -       if (xattr_ref_cache)
> -               kmem_cache_destroy(xattr_ref_cache);
> +       kmem_cache_destroy(xattr_datum_cache);
> +       kmem_cache_destroy(xattr_ref_cache);
>  #endif
>  }
> 

and some goto labels can go away either. like

[..]

err_percpu_counter_init:
	kmem_cache_destroy(sctp_chunk_cachep);
err_chunk_cachep:
	kmem_cache_destroy(sctp_bucket_cachep);

[..]

and others.

	-ss
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