Re: [PATCH] Fix NUMA node sizing in nr_free_zone_pages

[Andrew Morton]

"Martin J. Bligh" <mbligh@xxxxxxxxxx> wrote:
>
>  We are iterating over all nodes in nr_free_zone_pages(). Because the 
>  fallback zonelists contain all nodes in the system, and we walk all
>  the zonelists, we're counting memory multiple times (once for each
>  node). This caused us to make a size estimate of 32GB for an 8GB
>  AMD64 box, which makes all the dirty ratio calculations, etc incorrect.

Thanks, Martin.

Just for reference: this patch addresses the "Memory pressure handling with
iSCSI" problems which Badari Pulavarty reported.

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