Re: [PATCH 2/2] mm: blk-mq: uses page->list incorrectly

[David Rientjes]

On Wed, 11 Dec 2013, Dave Hansen wrote:

> 
> From: Dave Hansen <dave.hansen@xxxxxxxxxxxxxxx>
> 
> 'struct page' has two list_head fields: 'lru' and 'list'.
> Conveniently, they are unioned together.  This means that code
> can use them interchangably, which gets horribly confusing.
> 
> The blk-mq made the logical decision to try to use page->list.
> But, that field was actually introduced just for the slub code.
> ->lru is the right field to use outside of slab/slub.
> 
> Signed-off-by: Dave Hansen <dave.hansen@xxxxxxxxxxxxxxx>

Acked-by: David Rientjes <rientjes@xxxxxxxxxx>
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/