Re: [PATCH] blk-mq: remove the calling of local_memory_node()

[Jens Axboe]

On 10/19/20 2:20 AM, Xianting Tian wrote:
> We don't need to check whether the node is memoryless numa node before
> calling allocator interface. SLUB(and SLAB,SLOB) relies on the page
> allocator to pick a node. Page allocator should deal with memoryless
> nodes just fine. It has zonelists constructed for each possible nodes.
> And it will automatically fall back into a node which is closest to the
> requested node. As long as __GFP_THISNODE is not enforced of course.
> 
> The code comments of kmem_cache_alloc_node() of SLAB also showed this:
>  * Fallback to other node is possible if __GFP_THISNODE is not set.
> 
> blk-mq code doesn't set __GFP_THISNODE, so we can remove the calling
> of local_memory_node().

Applied, thanks.

-- 
Jens Axboe